diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/CHANGES.md b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/CHANGES.md
index f878062..92bab8f 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/CHANGES.md
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/CHANGES.md
@@ -1,827 +1,1739 @@
-## Version 8.0 beta
-
-This new major release is quite a big overhaul bringing both new features and
-some backwards incompatible changes. However, chances are that the majority of
-users won't be affected by the latter: the basic scenario described in the
-README is left intact.
-
-Here's what did change in an incompatible way:
-
-- We're now prefixing all classes located in [CSS classes reference][cr] with
-  `hljs-`, by default, because some class names would collide with other
-  people's stylesheets. If you were using an older version, you might still want
-  the previous behavior, but still want to upgrade. To suppress this new
-  behavior, you would initialize like so:
-
-  ```html
-  <script type="text/javascript">
-    hljs.configure({classPrefix: ''});
-    hljs.initHighlightingOnLoad();
-  </script>
-  ```
-
-- `tabReplace` and `useBR` that were used in different places are also unified
-  into the global options object and are to be set using `configure(options)`.
-  This function is documented in our [API docs][]. Also note that these
-  parameters are gone from `highlightBlock` and `fixMarkup` which are now also
-  rely on `configure`.
-
-- We removed public-facing (though undocumented) object `hljs.LANGUAGES` which
-  was used to register languages with the library in favor of two new methods:
-  `registerLanguage` and `getLanguage`. Both are documented in our [API docs][].
-
-- Result returned from `highlight` and `highlightAuto` no longer contains two
-  separate attributes contributing to relevance score, `relevance` and
-  `keyword_count`. They are now unified in `relevance`.
-
-Another technically compatible change that nonetheless might need attention:
-
-- The structure of the NPM package was refactored, so if you had installed it
-  locally, you'll have to update your paths. The usual `require('highlight.js')`
-  works as before. This is contributed by [Dmitry Smolin][].
-
-New features:
-
-- Languages now can be recognized by multiple names like "js" for JavaScript or
-  "html" for, well, HTML (which earlier insisted on calling it "xml"). These
-  aliases can be specified in the class attribute of the code container in your
-  HTML as well as in various API calls. For now there are only a few very common
-  aliases but we'll expand it in the future. All of them are listed in the
-  [class reference][].
-
-- Language detection can now be restricted to a subset of languages relevant in
-  a given context — a web page or even a single highlighting call. This is
-  especially useful for node.js build that includes all the known languages.
-  Another example is a StackOverflow-style site where users specify languages
-  as tags rather than in the markdown-formatted code snippets. This is
-  documented in the [API reference][] (see methods `highlightAuto` and
-  `configure`).
-
-- Language definition syntax streamlined with [variants][] and
-  [beginKeywords][].
-
-New languages and styles:
-
-- *Oxygene* by [Carlo Kok][]
-- *Mathematica* by [Daniel Kvasnička][]
-- *Autohotkey* by [Seongwon Lee][]
-- *Atelier* family of styles in 10 variants by [Bram de Haan][]
-- *Paraíso* styles by [Jan T. Sott][]
-
-Miscelleanous improvements:
-
-- Highlighting `=>` prompts in Clojure.
-- [Jeremy Hull][] fixed a lot of styles for consistency.
-- Finally, highlighting PHP and HTML [mixed in peculiar ways][php-html].
-- Objective C and C# now properly highlight titles in method definition.
-- Big overhaul of relevance counting for a number of languages. Please do report
-  bugs about mis-detection of non-trivial code snippets!
-
-[cr]: http://highlightjs.readthedocs.org/en/latest/css-classes-reference.html
-[api docs]: http://highlightjs.readthedocs.org/en/latest/api.html
-[variants]: https://groups.google.com/d/topic/highlightjs/VoGC9-1p5vk/discussion
-[beginKeywords]: https://github.com/isagalaev/highlight.js/commit/6c7fdea002eb3949577a85b3f7930137c7c3038d
-[php-html]: https://twitter.com/highlightjs/status/408890903017689088
-
-[Carlo Kok]: https://github.com/carlokok
-[Bram de Haan]: https://github.com/atelierbram
-[Daniel Kvasnička]: https://github.com/dkvasnicka
-[Dmitry Smolin]: https://github.com/dimsmol
-[Jeremy Hull]: https://github.com/sourrust
-[Seongwon Lee]: https://github.com/dlimpid
-[Jan T. Sott]: https://github.com/idleberg
-
-
-## Version 7.5
-
-A catch-up release dealing with some of the accumulated contributions. This one
-is probably will be the last before the 8.0 which will be slightly backwards
-incompatible regarding some advanced use-cases.
-
-One outstanding change in this version is the addition of 6 languages to the
-[hosted script][d]: Markdown, ObjectiveC, CoffeeScript, Apache, Nginx and
-Makefile. It now weighs about 6K more but we're going to keep it under 30K.
-
-New languages:
-
-- OCaml by [Mehdi Dogguy][mehdid] and [Nicolas Braud-Santoni][nbraud]
-- [LiveCode Server][lcs] by [Ralf Bitter][revig]
-- Scilab by [Sylvestre Ledru][sylvestre]
-- basic support for Makefile by [Ivan Sagalaev][isagalaev]
-
-Improvements:
-
-- Ruby's got support for characters like `?A`, `?1`, `?\012` etc. and `%r{..}`
-  regexps.
-- Clojure now allows a function call in the beginning of s-expressions
-  `(($filter "myCount") (arr 1 2 3 4 5))`.
-- Haskell's got new keywords and now recognizes more things like pragmas,
-  preprocessors, modules, containers, FFIs etc. Thanks to [Zena Treep][treep]
-  for the implementation and to [Jeremy Hull][sourrust] for guiding it.
-- Miscelleanous fixes in PHP, Brainfuck, SCSS, Asciidoc, CMake, Python and F#.
-
-[mehdid]: https://github.com/mehdid
-[nbraud]: https://github.com/nbraud
-[revig]: https://github.com/revig
-[lcs]: http://livecode.com/developers/guides/server/
-[sylvestre]: https://github.com/sylvestre
-[isagalaev]: https://github.com/isagalaev
-[treep]: https://github.com/treep
-[sourrust]: https://github.com/sourrust
-[d]: http://highlightjs.org/download/
-
-
-## New core developers
-
-The latest long period of almost complete inactivity in the project coincided
-with growing interest to it led to a decision that now seems completely obvious:
-we need more core developers.
-
-So without further ado let me welcome to the core team two long-time
-contributors: [Jeremy Hull][] and [Oleg
-Efimov][].
-
-Hope now we'll be able to work through stuff faster!
-
-P.S. The historical commit is [here][1] for the record.
-
-[Jeremy Hull]: https://github.com/sourrust
-[Oleg Efimov]: https://github.com/sannis
-[1]: https://github.com/isagalaev/highlight.js/commit/f3056941bda56d2b72276b97bc0dd5f230f2473f
-
-
-## Version 7.4
-
-This long overdue version is a snapshot of the current source tree with all the
-changes that happened during the past year. Sorry for taking so long!
-
-Along with the changes in code highlight.js has finally got its new home at
-<http://highlightjs.org/>, moving from its craddle on Software Maniacs which it
-outgrew a long time ago. Be sure to report any bugs about the site to
-<mailto:info@highlightjs.org>.
-
-On to what's new…
-
-New languages:
-
-- Handlebars templates by [Robin Ward][]
-- Oracle Rules Language by [Jason Jacobson][]
-- F# by [Joans Follesø][]
-- AsciiDoc and Haml by [Dan Allen][]
-- Lasso by [Eric Knibbe][]
-- SCSS by [Kurt Emch][]
-- VB.NET by [Poren Chiang][]
-- Mizar by [Kelley van Evert][]
-
-[Robin Ward]: https://github.com/eviltrout
-[Jason Jacobson]: https://github.com/jayce7
-[Joans Follesø]: https://github.com/follesoe
-[Dan Allen]: https://github.com/mojavelinux
-[Eric Knibbe]: https://github.com/EricFromCanada
-[Kurt Emch]: https://github.com/kemch
-[Poren Chiang]: https://github.com/rschiang
-[Kelley van Evert]: https://github.com/kelleyvanevert
-
-New style themes:
-
-- Monokai Sublime by [noformnocontent][]
-- Railscasts by [Damien White][]
-- Obsidian by [Alexander Marenin][]
-- Docco by [Simon Madine][]
-- Mono Blue by [Ivan Sagalaev][] (uses a single color hue for everything)
-- Foundation by [Dan Allen][]
-
-[noformnocontent]: http://nn.mit-license.org/
-[Damien White]: https://github.com/visoft
-[Alexander Marenin]: https://github.com/ioncreature
-[Simon Madine]: https://github.com/thingsinjars
-[Ivan Sagalaev]: https://github.com/isagalaev
-
-Other notable changes:
-
-- Corrected many corner cases in CSS.
-- Dropped Python 2 version of the build tool.
-- Implemented building for the AMD format.
-- Updated Rust keywords (thanks to [Dmitry Medvinsky][]).
-- Literal regexes can now be used in language definitions.
-- CoffeeScript highlighting is now significantly more robust and rich due to
-  input from [Cédric Néhémie][].
-
-[Dmitry Medvinsky]: https://github.com/dmedvinsky
-[Cédric Néhémie]: https://github.com/abe33
-
-
-## Version 7.3
-
-- Since this version highlight.js no longer works in IE version 8 and older.
-  It's made it possible to reduce the library size and dramatically improve code
-  readability and made it easier to maintain. Time to go forward!
-
-- New languages: AppleScript (by [Nathan Grigg][ng] and [Dr. Drang][dd]) and
-  Brainfuck (by [Evgeny Stepanischev][bolk]).
-
-- Improvements to existing languages:
-
-    - interpreter prompt in Python (`>>>` and `...`)
-    - @-properties and classes in CoffeeScript
-    - E4X in JavaScript (by [Oleg Efimov][oe])
-    - new keywords in Perl (by [Kirk Kimmel][kk])
-    - big Ruby syntax update (by [Vasily Polovnyov][vast])
-    - small fixes in Bash
-
-- Also Oleg Efimov did a great job of moving all the docs for language and style
-  developers and contributors from the old wiki under the source code in the
-  "docs" directory. Now these docs are nicely presented at
-  <http://highlightjs.readthedocs.org/>.
-
-[ng]: https://github.com/nathan11g
-[dd]: https://github.com/drdrang
-[bolk]: https://github.com/bolknote
-[oe]: https://github.com/Sannis
-[kk]: https://github.com/kimmel
-[vast]: https://github.com/vast
-
-
-## Version 7.2
-
-A regular bug-fix release without any significant new features. Enjoy!
-
-
-## Version 7.1
-
-A Summer crop:
-
-- [Marc Fornos][mf] made the definition for Clojure along with the matching
-  style Rainbow (which, of course, works for other languages too).
-- CoffeeScript support continues to improve getting support for regular
-  expressions.
-- Yoshihide Jimbo ported to highlight.js [five Tomorrow styles][tm] from the
-  [project by Chris Kempson][tm0].
-- Thanks to [Casey Duncun][cd] the library can now be built in the popular
-  [AMD format][amd].
-- And last but not least, we've got a fair number of correctness and consistency
-  fixes, including a pretty significant refactoring of Ruby.
-
-[mf]: https://github.com/mfornos
-[tm]: http://jmblog.github.com/color-themes-for-highlightjs/
-[tm0]: https://github.com/ChrisKempson/Tomorrow-Theme
-[cd]: https://github.com/caseman
-[amd]: http://requirejs.org/docs/whyamd.html
-
-
-## Version 7.0
-
-The reason for the new major version update is a global change of keyword syntax
-which resulted in the library getting smaller once again. For example, the
-hosted build is 2K less than at the previous version while supporting two new
-languages.
-
-Notable changes:
-
-- The library now works not only in a browser but also with [node.js][]. It is
-  installable with `npm install highlight.js`. [API][] docs are available on our
-  wiki.
-
-- The new unique feature (apparently) among syntax highlighters is highlighting
-  *HTTP* headers and an arbitrary language in the request body. The most useful
-  languages here are *XML* and *JSON* both of which highlight.js does support.
-  Here's [the detailed post][p] about the feature.
-
-- Two new style themes: a dark "south" *[Pojoaque][]* by Jason Tate and an
-  emulation of*XCode* IDE by [Angel Olloqui][ao].
-
-- Three new languages: *D* by [Aleksandar Ružičić][ar], *R* by [Joe Cheng][jc]
-  and *GLSL* by [Sergey Tikhomirov][st].
-
-- *Nginx* syntax has become a million times smaller and more universal thanks to
-  remaking it in a more generic manner that doesn't require listing all the
-  directives in the known universe.
-
-- Function titles are now highlighted in *PHP*.
-
-- *Haskell* and *VHDL* were significantly reworked to be more rich and correct
-  by their respective maintainers [Jeremy Hull][sr] and [Igor Kalnitsky][ik].
-
-And last but not least, many bugs have been fixed around correctness and
-language detection.
-
-Overall highlight.js currently supports 51 languages and 20 style themes.
-
-[node.js]: http://nodejs.org/
-[api]: http://softwaremaniacs.org/wiki/doku.php/highlight.js:api
-[p]: http://softwaremaniacs.org/blog/2012/05/10/http-and-json-in-highlight-js/en/
-[pojoaque]: http://web-cms-designs.com/ftopict-10-pojoaque-style-for-highlight-js-code-highlighter.html
-[ao]: https://github.com/angelolloqui
-[ar]: https://github.com/raleksandar
-[jc]: https://github.com/jcheng5
-[st]: https://github.com/tikhomirov
-[sr]: https://github.com/sourrust
-[ik]: https://github.com/ikalnitsky
-
-
-## Version 6.2
-
-A lot of things happened in highlight.js since the last version! We've got nine
-new contributors, the discussion group came alive, and the main branch on GitHub
-now counts more than 350 followers. Here are most significant results coming
-from all this activity:
-
-- 5 (five!) new languages: Rust, ActionScript, CoffeeScript, MatLab and
-  experimental support for markdown. Thanks go to [Andrey Vlasovskikh][av],
-  [Alexander Myadzel][am], [Dmytrii Nagirniak][dn], [Oleg Efimov][oe], [Denis
-  Bardadym][db] and [John Crepezzi][jc].
-
-- 2 new style themes: Monokai by [Luigi Maselli][lm] and stylistic imitation of
-  another well-known highlighter Google Code Prettify by [Aahan Krish][ak].
-
-- A vast number of [correctness fixes and code refactorings][log], mostly made
-  by [Oleg Efimov][oe] and [Evgeny Stepanischev][es].
-
-[av]: https://github.com/vlasovskikh
-[am]: https://github.com/myadzel
-[dn]: https://github.com/dnagir
-[oe]: https://github.com/Sannis
-[db]: https://github.com/btd
-[jc]: https://github.com/seejohnrun
-[lm]: http://grigio.org/
-[ak]: https://github.com/geekpanth3r
-[es]: https://github.com/bolknote
-[log]: https://github.com/isagalaev/highlight.js/commits/
-
-
-## Version 6.1 — Solarized
-
-[Jeremy Hull][jh] has implemented my dream feature — a port of [Solarized][]
-style theme famous for being based on the intricate color theory to achieve
-correct contrast and color perception. It is now available for highlight.js in
-both variants — light and dark.
-
-This version also adds a new original style Arta. Its author pumbur maintains a
-[heavily modified fork of highlight.js][pb] on GitHub.
-
-[jh]: https://github.com/sourrust
-[solarized]: http://ethanschoonover.com/solarized
-[pb]: https://github.com/pumbur/highlight.js
-
-
-## Version 6.0
-
-New major version of the highlighter has been built on a significantly
-refactored syntax. Due to this it's even smaller than the previous one while
-supporting more languages!
-
-New languages are:
-
-- Haskell by [Jeremy Hull][sourrust]
-- Erlang in two varieties — module and REPL — made collectively by [Nikolay
-  Zakharov][desh], [Dmitry Kovega][arhibot] and [Sergey Ignatov][ignatov]
-- Objective C by [Valerii Hiora][vhbit]
-- Vala by [Antono Vasiljev][antono]
-- Go by [Stephan Kountso][steplg]
-
-[sourrust]: https://github.com/sourrust
-[desh]: http://desh.su/
-[arhibot]: https://github.com/arhibot
-[ignatov]: https://github.com/ignatov
-[vhbit]: https://github.com/vhbit
-[antono]: https://github.com/antono
-[steplg]: https://github.com/steplg
-
-Also this version is marginally faster and fixes a number of small long-standing
-bugs.
-
-Developer overview of the new language syntax is available in a [blog post about
-recent beta release][beta].
-
-[beta]: http://softwaremaniacs.org/blog/2011/04/25/highlight-js-60-beta/en/
-
-P.S. New version is not yet available on a Yandex' CDN, so for now you have to
-download [your own copy][d].
-
-[d]: /soft/highlight/en/download/
-
-
-## Version 5.14
-
-Fixed bugs in HTML/XML detection and relevance introduced in previous
-refactoring.
-
-Also test.html now shows the second best result of language detection by
-relevance.
-
-
-## Version 5.13
-
-Past weekend began with a couple of simple additions for existing languages but
-ended up in a big code refactoring bringing along nice improvements for language
-developers.
-
-### For users
-
-- Description of C++ has got new keywords from the upcoming [C++ 0x][] standard.
-- Description of HTML has got new tags from [HTML 5][].
-- CSS-styles have been unified to use consistent padding and also have lost
-  pop-outs with names of detected languages.
-- [Igor Kalnitsky][ik] has sent two new language descriptions: CMake и VHDL.
-
-This makes total number of languages supported by highlight.js to reach 35.
-
-Bug fixes:
-
-- Custom classes on `<pre>` tags are not being overridden anymore
-- More correct highlighting of code blocks inside non-`<pre>` containers:
-  highlighter now doesn't insist on replacing them with its own container and
-  just replaces the contents.
-- Small fixes in browser compatibility and heuristics.
-
-[c++ 0x]: http://ru.wikipedia.org/wiki/C%2B%2B0x
-[html 5]: http://en.wikipedia.org/wiki/HTML5
-[ik]: http://kalnitsky.org.ua/
-
-### For developers
-
-The most significant change is the ability to include language submodes right
-under `contains` instead of defining explicit named submodes in the main array:
-
-    contains: [
-      'string',
-      'number',
-      {begin: '\\n', end: hljs.IMMEDIATE_RE}
-    ]
-
-This is useful for auxiliary modes needed only in one place to define parsing.
-Note that such modes often don't have `className` and hence won't generate a
-separate `<span>` in the resulting markup. This is similar in effect to
-`noMarkup: true`. All existing languages have been refactored accordingly.
-
-Test file test.html has at last become a real test. Now it not only puts the
-detected language name under the code snippet but also tests if it matches the
-expected one. Test summary is displayed right above all language snippets.
-
-
-## CDN
-
-Fine people at [Yandex][] agreed to host highlight.js on their big fast servers.
-[Link up][l]!
-
-[yandex]: http://yandex.com/
-[l]: http://softwaremaniacs.org/soft/highlight/en/download/
-
-
-## Version 5.10 — "Paris".
-
-Though I'm on a vacation in Paris, I decided to release a new version with a
-couple of small fixes:
-
-- Tomas Vitvar discovered that TAB replacement doesn't always work when used
-  with custom markup in code
-- SQL parsing is even more rigid now and doesn't step over SmallTalk in tests
-
-
-## Version 5.9
-
-A long-awaited version is finally released.
-
-New languages:
-
-- Andrew Fedorov made a definition for Lua
-- a long-time highlight.js contributor [Peter Leonov][pl] made a definition for
-  Nginx config
-- [Vladimir Moskva][vm] made a definition for TeX
-
-[pl]: http://kung-fu-tzu.ru/
-[vm]: http://fulc.ru/
-
-Fixes for existing languages:
-
-- [Loren Segal][ls] reworked the Ruby definition and added highlighting for
-  [YARD][] inline documentation
-- the definition of SQL has become more solid and now it shouldn't be overly
-  greedy when it comes to language detection
-
-[ls]: http://gnuu.org/
-[yard]: http://yardoc.org/
-
-The highlighter has become more usable as a library allowing to do highlighting
-from initialization code of JS frameworks and in ajax methods (see.
-readme.eng.txt).
-
-Also this version drops support for the [WordPress][wp] plugin. Everyone is
-welcome to [pick up its maintenance][p] if needed.
-
-[wp]: http://wordpress.org/
-[p]: http://bazaar.launchpad.net/~isagalaev/+junk/highlight/annotate/342/src/wp_highlight.js.php
-
-
-## Version 5.8
-
-- Jan Berkel has contributed a definition for Scala. +1 to hotness!
-- All CSS-styles are rewritten to work only inside `<pre>` tags to avoid
-  conflicts with host site styles.
-
-
-## Version 5.7.
-
-Fixed escaping of quotes in VBScript strings.
-
-
-## Version 5.5
-
-This version brings a small change: now .ini-files allow digits, underscores and
-square brackets in key names.
-
-
-## Version 5.4
-
-Fixed small but upsetting bug in the packer which caused incorrect highlighting
-of explicitly specified languages. Thanks to Andrew Fedorov for precise
-diagnostics!
-
-
-## Version 5.3
-
-The version to fulfil old promises.
-
-The most significant change is that highlight.js now preserves custom user
-markup in code along with its own highlighting markup. This means that now it's
-possible to use, say, links in code. Thanks to [Vladimir Dolzhenko][vd] for the
-[initial proposal][1] and for making a proof-of-concept patch.
-
-Also in this version:
-
-- [Vasily Polovnyov][vp] has sent a GitHub-like style and has implemented
-  support for CSS @-rules and Ruby symbols.
-- Yura Zaripov has sent two styles: Brown Paper and School Book.
-- Oleg Volchkov has sent a definition for [Parser 3][p3].
-
-[1]: http://softwaremaniacs.org/forum/highlightjs/6612/
-[p3]: http://www.parser.ru/
-[vp]: http://vasily.polovnyov.ru/
-[vd]: http://dolzhenko.blogspot.com/
-
-
-## Version 5.2
-
-- at last it's possible to replace indentation TABs with something sensible (e.g. 2 or 4 spaces)
-- new keywords and built-ins for 1C by Sergey Baranov
-- a couple of small fixes to Apache highlighting
-
-
-## Version 5.1
-
-This is one of those nice version consisting entirely of new and shiny
-contributions!
-
-- [Vladimir Ermakov][vooon] created highlighting for AVR Assembler
-- [Ruslan Keba][rukeba] created highlighting for Apache config file. Also his
-  original visual style for it is now available for all highlight.js languages
-  under the name "Magula".
-- [Shuen-Huei Guan][drake] (aka Drake) sent new keywords for RenderMan
-  languages. Also thanks go to [Konstantin Evdokimenko][ke] for his advice on
-  the matter.
-
-[vooon]: http://vehq.ru/about/
-[rukeba]: http://rukeba.com/
-[drake]: http://drakeguan.org/
-[ke]: http://k-evdokimenko.moikrug.ru/
-
-
-## Version 5.0
-
-The main change in the new major version of highlight.js is a mechanism for
-packing several languages along with the library itself into a single compressed
-file. Now sites using several languages will load considerably faster because
-the library won't dynamically include additional files while loading.
-
-Also this version fixes a long-standing bug with Javascript highlighting that
-couldn't distinguish between regular expressions and division operations.
-
-And as usually there were a couple of minor correctness fixes.
-
-Great thanks to all contributors! Keep using highlight.js.
-
-
-## Version 4.3
-
-This version comes with two contributions from [Jason Diamond][jd]:
-
-- language definition for C# (yes! it was a long-missed thing!)
-- Visual Studio-like highlighting style
-
-Plus there are a couple of minor bug fixes for parsing HTML and XML attributes.
-
-[jd]: http://jason.diamond.name/weblog/
-
-
-## Version 4.2
-
-The biggest news is highlighting for Lisp, courtesy of Vasily Polovnyov. It's
-somewhat experimental meaning that for highlighting "keywords" it doesn't use
-any pre-defined set of a Lisp dialect. Instead it tries to highlight first word
-in parentheses wherever it makes sense. I'd like to ask people programming in
-Lisp to confirm if it's a good idea and send feedback to [the forum][f].
-
-Other changes:
-
-- Smalltalk was excluded from DEFAULT_LANGUAGES to save traffic
-- [Vladimir Epifanov][voldmar] has implemented javascript style switcher for
-  test.html
-- comments now allowed inside Ruby function definition
-- [MEL][] language from [Shuen-Huei Guan][drake]
-- whitespace now allowed between `<pre>` and `<code>`
-- better auto-detection of C++ and PHP
-- HTML allows embedded VBScript (`<% .. %>`)
-
-[f]: http://softwaremaniacs.org/forum/highlightjs/
-[voldmar]: http://voldmar.ya.ru/
-[mel]: http://en.wikipedia.org/wiki/Maya_Embedded_Language
-[drake]: http://drakeguan.org/
-
-
-## Version 4.1
-
-Languages:
-
-- Bash from Vah
-- DOS bat-files from Alexander Makarov (Sam)
-- Diff files from Vasily Polovnyov
-- Ini files from myself though initial idea was from Sam
-
-Styles:
-
-- Zenburn from Vladimir Epifanov, this is an imitation of a
-  [well-known theme for Vim][zenburn].
-- Ascetic from myself, as a realization of ideals of non-flashy highlighting:
-  just one color in only three gradations :-)
-
-In other news. [One small bug][bug] was fixed, built-in keywords were added for
-Python and C++ which improved auto-detection for the latter (it was shame that
-[my wife's blog][alenacpp] had issues with it from time to time). And lastly
-thanks go to Sam for getting rid of my stylistic comments in code that were
-getting in the way of [JSMin][].
-
-[zenburn]: http://en.wikipedia.org/wiki/Zenburn
-[alenacpp]: http://alenacpp.blogspot.com/
-[bug]: http://softwaremaniacs.org/forum/viewtopic.php?id=1823
-[jsmin]: http://code.google.com/p/jsmin-php/
-
-
-## Version 4.0
-
-New major version is a result of vast refactoring and of many contributions.
-
-Visible new features:
-
-- Highlighting of embedded languages. Currently is implemented highlighting of
-  Javascript and CSS inside HTML.
-- Bundled 5 ready-made style themes!
-
-Invisible new features:
-
-- Highlight.js no longer pollutes global namespace. Only one object and one
-  function for backward compatibility.
-- Performance is further increased by about 15%.
-
-Changing of a major version number caused by a new format of language definition
-files. If you use some third-party language files they should be updated.
-
-
-## Version 3.5
-
-A very nice version in my opinion fixing a number of small bugs and slightly
-increased speed in a couple of corner cases. Thanks to everybody who reports
-bugs in he [forum][f] and by email!
-
-There is also a new language — XML. A custom XML formerly was detected as HTML
-and didn't highlight custom tags. In this version I tried to make custom XML to
-be detected and highlighted by its own rules. Which by the way include such
-things as CDATA sections and processing instructions (`<? ... ?>`).
-
-[f]: http://softwaremaniacs.org/forum/viewforum.php?id=6
-
-
-## Version 3.3
-
-[Vladimir Gubarkov][xonix] has provided an interesting and useful addition.
-File export.html contains a little program that shows and allows to copy and
-paste an HTML code generated by the highlighter for any code snippet. This can
-be useful in situations when one can't use the script itself on a site.
-
-
-[xonix]: http://xonixx.blogspot.com/
-
-
-## Version 3.2 consists completely of contributions:
-
-- Vladimir Gubarkov has described SmallTalk
-- Yuri Ivanov has described 1C
-- Peter Leonov has packaged the highlighter as a Firefox extension
-- Vladimir Ermakov has compiled a mod for phpBB
-
-Many thanks to you all!
-
-
-## Version 3.1
-
-Three new languages are available: Django templates, SQL and Axapta. The latter
-two are sent by [Dmitri Roudakov][1]. However I've almost entirely rewrote an
-SQL definition but I'd never started it be it from the ground up :-)
-
-The engine itself has got a long awaited feature of grouping keywords
-("keyword", "built-in function", "literal"). No more hacks!
-
-[1]: http://roudakov.ru/
-
-
-## Version 3.0
-
-It is major mainly because now highlight.js has grown large and has become
-modular. Now when you pass it a list of languages to highlight it will
-dynamically load into a browser only those languages.
-
-Also:
-
-- Konstantin Evdokimenko of [RibKit][] project has created a highlighting for
-  RenderMan Shading Language and RenderMan Interface Bytestream. Yay for more
-  languages!
-- Heuristics for C++ and HTML got better.
-- I've implemented (at last) a correct handling of backslash escapes in C-like
-  languages.
-
-There is also a small backwards incompatible change in the new version. The
-function initHighlighting that was used to initialize highlighting instead of
-initHighlightingOnLoad a long time ago no longer works. If you by chance still
-use it — replace it with the new one.
-
-[RibKit]: http://ribkit.sourceforge.net/
-
-
-## Version 2.9
-
-Highlight.js is a parser, not just a couple of regular expressions. That said
-I'm glad to announce that in the new version 2.9 has support for:
-
-- in-string substitutions for Ruby -- `#{...}`
-- strings from from numeric symbol codes (like #XX) for Delphi
-
-
-## Version 2.8
-
-A maintenance release with more tuned heuristics. Fully backwards compatible.
-
-
-## Version 2.7
-
-- Nikita Ledyaev presents highlighting for VBScript, yay!
-- A couple of bugs with escaping in strings were fixed thanks to Mickle
-- Ongoing tuning of heuristics
-
-Fixed bugs were rather unpleasant so I encourage everyone to upgrade!
-
-
-## Version 2.4
-
-- Peter Leonov provides another improved highlighting for Perl
-- Javascript gets a new kind of keywords — "literals". These are the words
-  "true", "false" and "null"
-
-Also highlight.js homepage now lists sites that use the library. Feel free to
-add your site by [dropping me a message][mail] until I find the time to build a
-submit form.
-
-[mail]: mailto:Maniac@SoftwareManiacs.Org
-
-
-## Version 2.3
-
-This version fixes IE breakage in previous version. My apologies to all who have
-already downloaded that one!
-
-
-## Version 2.2
-
-- added highlighting for Javascript
-- at last fixed parsing of Delphi's escaped apostrophes in strings
-- in Ruby fixed highlighting of keywords 'def' and 'class', same for 'sub' in
-  Perl
-
-
-## Version 2.0
-
-- Ruby support by [Anton Kovalyov][ak]
-- speed increased by orders of magnitude due to new way of parsing
-- this same way allows now correct highlighting of keywords in some tricky
-  places (like keyword "End" at the end of Delphi classes)
-
-[ak]: http://anton.kovalyov.net/
-
-
-## Version 1.0
-
-Version 1.0 of javascript syntax highlighter is released!
-
-It's the first version available with English description. Feel free to post
-your comments and question to [highlight.js forum][forum]. And don't be afraid
-if you find there some fancy Cyrillic letters -- it's for Russian users too :-)
-
-[forum]: http://softwaremaniacs.org/forum/viewforum.php?id=6
+## Master
+
+New languages:
+
+New styles:
+
+Improvements:
+
+## Version 9.13.1
+
+Improvements:
+- *C#* function declarations no longer include trailing whitespace, by [JeremyTCD][]
+- Added new and missing keywords to *AngelScript*, by [Melissa Geels][]
+- *TypeScript* decorator factories highlighting fix, by [Antoine Boisier-Michaud][]
+- Added support for multiline strings to *Swift*, by [Alejandro Isaza][]
+- Fixed issue that was causing some minifiers to fail.
+- Fixed `autoDetection` to accept language aliases.
+
+[JeremyTCD]: https://github.com/JeremyTCD
+[Melissa Geels]: https://github.com/codecat
+[Antoine Boisier-Michaud]: https://github.com/Aboisier
+[Alejandro Isaza]: https://github.com/alejandro-isaza
+
+## Version 9.13.0
+
+New languages:
+
+- *ArcGIS Arcade* by [John Foster][]
+- *AngelScript* by [Melissa Geels][]
+- *GML* by [meseta][]
+- *isbl* built-in language DIRECTUM and Conterra by [Dmitriy Tarasov][].
+- *PostgreSQL* SQL dialect and PL/pgSQL language by [Egor Rogov][].
+- *ReasonML* by [Gidi Meir Morris][]
+- *SAS* by [Mauricio Caceres Bravo][]
+- *Plaintext* by [Egor Rogov][]
+- *.properties* by [bostko][] and [Egor Rogov][]
+
+New styles:
+
+- *a11y-dark theme* by [Eric Bailey][]
+- *a11y-light theme* by [Eric Bailey][]
+- *An Old Hope* by [Gustavo Costa][]
+- *Atom One Dark Reasonable* by [Gidi Meir Morris][]
+- *isbl editor dark* by [Dmitriy Tarasov][]
+- *isbl editor light* by [Dmitriy Tarasov][]
+- *Lightfair* by [Tristian Kelly][]
+- [*Nord*][nord-highlightjs] by [Arctic Ice Studio][]
+- *[🦄 Shades of Purple](https://github.com/ahmadawais/Shades-of-Purple-HighlightJS)* by [Ahmad Awais][]
+
+Improvements:
+
+- New attribute `endSameAsBegin` for nested constructs with variable names
+  by [Egor Rogov][].
+- *Python* highlighting of escaped quotes fixed by [Harmon][]
+- *PHP*: Added alias for php7, by [Vijaya Chandran Mani][]
+- *C++* string handling, by [David Benjamin][]
+- *Swift* Add `@objcMembers` to `@attributes`, by [Berk Çebi][]
+- Infrastructural changes by [Marcos Cáceres][]
+- Fixed metachars highighting for *NSIS* by [Jan T. Sott][]
+- *Yaml* highlight local tags as types by [Léo Lam][]
+- Improved highlighting for *Elixir* by [Piotr Kaminski][]
+- New attribute `disableAutodetect` for preventing autodetection by [Egor Rogov][]
+- *Matlab*: transpose operators and double quote strings, by [JohnC32][] and [Egor Rogov][]
+- Various documentation typos and improvemets by [Jimmy Wärting][], [Lutz Büch][], [bcleland][]
+- *Cmake* updated with new keywords and commands by [Deniz Bahadir][]
+
+[Ahmad Awais]: https://github.com/ahmadawais
+[Arctic Ice Studio]: https://github.com/arcticicestudio
+[Dmitriy Tarasov]: https://github.com/MedvedTMN
+[Egor Rogov]: https://github.com/egor-rogov
+[Eric Bailey]: https://github.com/ericwbailey
+[Gidi Meir Morris]: https://github.com/gmmorris
+[Gustavo Costa]: https://github.com/gusbemacbe
+[Harmon]: https://github.com/Harmon758
+[Melissa Geels]: https://github.com/codecat
+[meseta]: https://github.com/meseta
+[nord-highlightjs]: https://github.com/arcticicestudio/nord-highlightjs
+[Tristian Kelly]: https://github.com/TristianK3604
+[Vijaya Chandran Mani]: https://github.com/vijaycs85
+[John Foster]: https://github.com/jf990
+[David Benjamin]: https://github.com/davidben
+[Berk Çebi]: https://github.com/berkcebi
+[Mauricio Caceres Bravo]: https://github.com/mcaceresb
+[bostko]: https://github.com/bostko
+[Deniz Bahadir]: https://github.com/Bagira80
+[bcleland]: https://github.com/bcleland
+[JohnC32]: https://github.com/JohnC32
+[Lutz Büch]: https://github.com/lutz-100worte
+[Piotr Kaminski]: https://github.com/pkaminski
+[Léo Lam]: https://github.com/leoetlino
+[Jan T. Sott]: https://github.com/idleberg
+[Jimmy Wärting]: https://github.com/jimmywarting
+[Marcos Cáceres]: https://github.com/marcoscaceres
+
+## Version 9.12.0
+
+New language:
+
+- *MikroTik* RouterOS Scripting language by [Ivan Dementev][].
+
+New style:
+
+- *VisualStudio 2015 Dark* by [Nicolas LLOBERA][]
+
+Improvements:
+
+- *Crystal* updated with new keywords and syntaxes by [Tsuyusato Kitsune][].
+- *Julia* updated to the modern definitions by [Alex Arslan][].
+- *julia-repl* added by [Morten Piibeleht][].
+- [Stanislav Belov][] wrote a new definition for *1C*, replacing the one that
+  has not been updated for more than 8 years. The new version supports syntax
+  for versions 7.7 and 8.
+- [Nicolas LLOBERA][] improved C# definition fixing edge cases with function
+  titles detection and added highlighting of `[Attributes]`.
+- [nnnik][] provided a few correctness fixes for *Autohotkey*.
+- [Martin Clausen][] made annotation collections in *Clojure* to look
+  consistently with other kinds.
+- [Alejandro Alonso][] updated *Swift* keywords.
+
+[Tsuyusato Kitsune]: https://github.com/MakeNowJust
+[Alex Arslan]: https://github.com/ararslan
+[Morten Piibeleht]: https://github.com/mortenpi
+[Stanislav Belov]: https://github.com/4ppl
+[Ivan Dementev]: https://github.com/DiVAN1x
+[Nicolas LLOBERA]: https://github.com/Nicolas01
+[nnnik]: https://github.com/nnnik
+[Martin Clausen]: https://github.com/maacl
+[Alejandro Alonso]: https://github.com/Azoy
+
+## Version 9.11.0
+
+New languages:
+
+- *Shell* by [Tsuyusato Kitsune][]
+- *jboss-cli* by [Raphaël Parrëe][]
+
+Improvements:
+
+- [Joël Porquet] has [greatly improved the definition of *makefile*][5b3e0e6].
+- *C++* class titles are now highlighted as in other languages with classes.
+- [Jordi Petit][] added rarely used `or`, `and` and `not` keywords to *C++*.
+- [Pieter Vantorre][] fixed highlighting of negative floating point values.
+
+
+[Tsuyusato Kitsune]: https://github.com/MakeNowJust
+[Jordi Petit]: https://github.com/jordi-petit
+[Raphaël Parrëe]: https://github.com/rparree
+[Pieter Vantorre]: https://github.com/NuclearCookie
+[5b3e0e6]: https://github.com/isagalaev/highlight.js/commit/5b3e0e68bfaae282faff6697d6a490567fa9d44b
+
+
+## Version 9.10.0
+
+Apologies for missing the previous release cycle. Some thing just can't be
+automated… Anyway, we're back!
+
+New languages:
+
+- *Hy* by [Sergey Sobko][]
+- *Leaf* by [Hale Chan][]
+- *N1QL* by [Andres Täht][] and [Rene Saarsoo][]
+
+Improvements:
+
+- *Rust* got updated with new keywords by [Kasper Andersen][] and then
+  significantly modernized even more by [Eduard-Mihai Burtescu][] (yes, @eddyb,
+  Rust core team member!)
+- *Python* updated with f-literals by [Philipp A][].
+- *YAML* updated with unquoted strings support.
+- *Gauss* updated with new keywords by [Matt Evans][].
+- *Lua* updated with new keywords by [Joe Blow][].
+- *Kotlin* updated with new keywords by [Philipp Hauer][].
+- *TypeScript* got highlighting of function params and updated keywords by
+  [Ike Ku][].
+- *Scheme* now correctly handles \`-quoted lists thanks to [Guannan Wei].
+- [Sam Wu][] fixed handling of `<<` in *C++* defines.
+
+[Philipp A]: https://github.com/flying-sheep
+[Philipp Hauer]: https://github.com/phauer
+[Sergey Sobko]: https://github.com/profitware
+[Hale Chan]: https://github.com/halechan
+[Matt Evans]: https://github.com/matthewevans
+[Joe Blow]: https://github.com/mossarelli
+[Kasper Andersen]: https://github.com/kasma1990
+[Eduard-Mihai Burtescu]: https://github.com/eddyb
+[Andres Täht]: https://github.com/andrestaht
+[Rene Saarsoo]: https://github.com/nene
+[Philipp Hauer]: https://github.com/phauer
+[Ike Ku]: https://github.com/dempfi
+[Guannan Wei]: https://github.com/Kraks
+[Sam Wu]: https://github.com/samsam2310
+
+
+## Version 9.9.0
+
+New languages
+
+- *LLVM* by [Michael Rodler][]
+
+Improvements:
+
+- *TypeScript* updated with annotations and param lists inside constructors, by
+  [Raphael Parree][].
+- *CoffeeScript* updated with new keywords and fixed to recognize JavaScript
+  in \`\`\`, thanks to thanks to [Geoffrey Booth][].
+- Compiler directives in *Delphi* are now correctly highlighted as "meta".
+
+[Raphael Parree]: https://github.com/rparree
+[Michael Rodler]: https://github.com/f0rki
+[Geoffrey Booth]: https://github.com/GeoffreyBooth
+
+
+## Version 9.8.0 "New York"
+
+This version is the second one that deserved a name. Because I'm in New York,
+and the release isn't missing the deadline only because it's still Tuesday on
+West Coast.
+
+New languages:
+
+- *Clean* by [Camil Staps][]
+- *Flix* by [Magnus Madsen][]
+
+Improvements:
+
+- [Kenton Hamaluik][] did a comprehensive update for *Haxe*.
+- New commands for *PowerShell* from [Nicolas Le Gall][].
+- [Jan T. Sott][] updated *NSIS*.
+- *Java* and *Swift* support unicode characters in identifiers thanks to
+  [Alexander Lichter][].
+
+[Camil Staps]: https://github.com/camilstaps
+[Magnus Madsen]: https://github.com/magnus-madsen
+[Kenton Hamaluik]: https://github.com/FuzzyWuzzie
+[Nicolas Le Gall]: https://github.com/darkitty
+[Jan T. Sott]: https://github.com/idleberg
+[Alexander Lichter]: https://github.com/manniL
+
+
+## Version 9.7.0
+
+A comprehensive bugfix release. This is one of the best things about
+highlight.js: even boring things keep getting better (even if slow).
+
+- VHDL updated with PSL keywords and uses more consistent styling.
+- Nested C-style comments no longer break highlighting in many languages.
+- JavaScript updated with `=>` functions, highlighted object attributes and
+  parsing within template string substitution blocks (`${...}`).
+- Fixed another corner case with self-closing `<tag/>` in JSX.
+- Added `HEALTHCHECK` directive in Docker.
+- Delphi updated with new Free Pascal keywords.
+- Fixed digit separator parsing in C++.
+- C# updated with new keywords and fixed to allow multiple identifiers within
+  generics `<...>`.
+- Fixed another slow regex in Less.
+
+
+## Version 9.6.0
+
+New languages:
+
+- *ABNF* and *EBNF* by [Alex McKibben][]
+- *Awk* by [Matthew Daly][]
+- *SubUnit* by [Sergey Bronnikov][]
+
+New styles:
+
+- *Atom One* in both Dark and Light variants  by [Daniel Gamage][]
+
+Plus, a few smaller updates for *Lasso*, *Elixir*, *C++* and *SQL*.
+
+[Alex McKibben]: https://github.com/mckibbenta
+[Daniel Gamage]: https://github.com/danielgamage
+[Matthew Daly]: https://github.com/matthewbdaly
+[Sergey Bronnikov]: https://github.com/ligurio
+
+
+## Version 9.5.0
+
+New languages:
+
+- *Excel* by [Victor Zhou][]
+- *Linden Scripting Language* by [Builder's Brewery][]
+- *TAP* (Test Anything Protocol) by [Sergey Bronnikov][]
+- *Pony* by [Joe Eli McIlvain][]
+- *Coq* by [Stephan Boyer][]
+- *dsconfig* and *LDIF* by [Jacob Childress][]
+
+New styles:
+
+- *Ocean Dark* by [Gavin Siu][]
+
+Notable changes:
+
+- [Minh Nguyễn][] added more built-ins to Objective C.
+- [Jeremy Hull][] fixed corner cases in C++ preprocessor directives and Diff
+  comments.
+- [Victor Zhou][] added support for digit separators in C++ numbers.
+
+[Gavin Siu]: https://github.com/gavsiu
+[Builder's Brewery]: https://github.com/buildersbrewery
+[Victor Zhou]: https://github.com/OiCMudkips
+[Sergey Bronnikov]: https://github.com/ligurio
+[Joe Eli McIlvain]: https://github.com/jemc
+[Stephan Boyer]: https://github.com/boyers
+[Jacob Childress]: https://github.com/braveulysses
+[Minh Nguyễn]: https://github.com/1ec5
+[Jeremy Hull]: https://github.com/sourrust
+
+
+## Version 9.4.0
+
+New languages:
+
+- *PureBASIC* by [Tristano Ajmone][]
+- *BNF* by [Oleg Efimov][]
+- *Ada* by [Lars Schulna][]
+
+New styles:
+
+- *PureBASIC* by [Tristano Ajmone][]
+
+Improvements to existing languages and styles:
+
+- We now highlight function declarations in Go.
+- [Taisuke Fujimoto][] contributed very convoluted rules for raw and
+  interpolated strings in C#.
+- [Boone Severson][] updated Verilog to comply with IEEE 1800-2012
+  SystemVerilog.
+- [Victor Zhou][] improved rules for comments and strings in PowerShell files.
+- [Janis Voigtländer][] updated the definition of Elm to version 0.17 of the
+  languages. Elm is now featured on the front page of <https://highlightjs.org>.
+- Special variable `$this` is highlighted as a keyword in PHP.
+- `usize` and `isize` are now highlighted in Rust.
+- Fixed labels and directives in x86 assembler.
+
+[Tristano Ajmone]: https://github.com/tajmone
+[Taisuke Fujimoto]: https://github.com/temp-impl
+[Oleg Efimov]: https://github.com/Sannis
+[Boone Severson]: https://github.com/BooneJS
+[Victor Zhou]: https://github.com/OiCMudkips
+[Lars Schulna]: https://github.com/captain-hanuta
+[Janis Voigtländer]: https://github.com/jvoigtlaender
+
+
+## Version 9.3.0
+
+New languages:
+
+- *Tagger Script* by [Philipp Wolfer][]
+- *MoonScript* by [Billy Quith][]
+
+New styles:
+
+- *xt256* by [Herbert Shin][]
+
+Improvements to existing languages and styles:
+
+- More robust handling of unquoted HTML tag attributes
+- Relevance tuning for QML which was unnecessary eager at seizing other
+  languages' code
+- Improve GAMS language parsing
+- Fixed a bunch of bugs around selectors in Less
+- Kotlin's got a new definition for annotations, updated keywords and other
+  minor improvements
+- Added `move` to Rust keywords
+- Markdown now recognizes \`\`\`-fenced code blocks
+- Improved detection of function declarations in C++ and C#
+
+[Philipp Wolfer]: https://github.com/phw
+[Billy Quith]: https://github.com/billyquith
+[Herbert Shin]: https://github.com/initbar
+
+
+## Version 9.2.0
+
+New languages:
+
+- *QML* by [John Foster][]
+- *HTMLBars* by [Michael Johnston][]
+- *CSP* by [Taras][]
+- *Maxima* by [Robert Dodier][]
+
+New styles:
+
+- *Gruvbox* by [Qeole][]
+- *Dracula* by [Denis Ciccale][]
+
+Improvements to existing languages and styles:
+
+- We now correctly handle JSX with arbitrary node tree depth.
+- Argument list for `(lambda)` in Scheme is no longer highlighted as a function
+  call.
+- Stylus syntax doesn't break on valid CSS.
+- More correct handling of comments and strings and other improvements for
+  VimScript.
+- More subtle work on the default style.
+- We now use anonymous modules for AMD.
+- `macro_rules!` is now recognized as a built-in in Rust.
+
+[John Foster]: https://github.com/jf990
+[Qeole]: https://github.com/Qeole
+[Denis Ciccale]: https://github.com/dciccale
+[Michael Johnston]: https://github.com/lastobelus
+[Taras]: https://github.com/oxdef
+[Robert Dodier]: https://github.com/robert-dodier
+
+
+## Version 9.1.0
+
+New languages:
+
+- *Stan* by [Brendan Rocks][]
+- *BASIC* by [Raphaël Assénat][]
+- *GAUSS* by [Matt Evans][]
+- *DTS* by [Martin Braun][]
+- *Arduino* by [Stefania Mellai][]
+
+New Styles:
+
+- *Arduino Light* by [Stefania Mellai][]
+
+Improvements to existing languages and styles:
+
+- Handle return type annotations in Python
+- Allow shebang headers in Javascript
+- Support strings in Rust meta
+- Recognize `struct` as a class-level definition in Rust
+- Recognize b-prefixed chars and strings in Rust
+- Better numbers handling in Verilog
+
+[Brendan Rocks]: http://brendanrocks.com
+[Raphaël Assénat]: https://github.com/raphnet
+[Matt Evans]: https://github.com/matthewevans
+[Martin Braun]: https://github.com/mbr0wn
+[Stefania Mellai]: https://github.com/smellai
+
+
+## Version 9.0.0
+
+The new major version brings a reworked styling system. Highlight.js now defines
+a limited set of highlightable classes giving a consistent result across all the
+styles and languages. You can read a more detailed explanation and background in
+the [tracking issue][#348] that started this long process back in May.
+
+This change is backwards incompatible for those who uses highlight.js with a
+custom stylesheet. The [new style guide][sg] explains how to write styles
+in this new world.
+
+Bundled themes have also suffered a significant amount of improvements and may
+look different in places, but all the things now consistent and make more sense.
+Among others, the Default style has got a refresh and will probably be tweaked
+some more in next releases. Please do give your feedback in our
+[issue tracker][issues].
+
+New languages in this release:
+
+- *Caché Object Script* by [Nikita Savchenko][]
+- *YAML* by [Stefan Wienert][]
+- *MIPS Assembler* by [Nebuleon Fumika][]
+- *HSP* by [prince][]
+
+Improvements to existing languages and styles:
+
+- ECMAScript 6 modules import now do not require closing semicolon.
+- ECMAScript 6 classes constructors now highlighted.
+- Template string support for Typescript, as for ECMAScript 6.
+- Scala case classes params highlight fixed.
+- Built-in names introduced in Julia v0.4 added by [Kenta Sato][].
+- Refreshed Default style.
+
+Other notable changes:
+
+- [Web workers support][webworkers] added bu [Jan Kühle][].
+- We now have tests for compressed browser builds as well.
+- The building tool chain has been switched to node.js 4.x. and is now
+  shamelessly uses ES6 features all over the place, courtesy of [Jeremy Hull][].
+- License added to non-compressed browser build.
+
+[Jan Kühle]: https://github.com/frigus02
+[Stefan Wienert]: https://github.com/zealot128
+[Kenta Sato]: https://github.com/bicycle1885
+[Nikita Savchenko]: https://github.com/ZitRos
+[webworkers]: https://github.com/isagalaev/highlight.js#web-workers
+[Jeremy Hull]: https://github.com/sourrust
+[#348]: https://github.com/isagalaev/highlight.js/issues/348
+[sg]: http://highlightjs.readthedocs.org/en/latest/style-guide.html
+[issues]: https://github.com/isagalaev/highlight.js/issues
+[Nebuleon Fumika]: https://github.com/Nebuleon
+[prince]: https://github.com/prince-0203
+
+
+## Version 8.9.1
+
+Some last-minute changes reverted due to strange bug with minified browser build:
+
+- Scala case classes params highlight fixed
+- ECMAScript 6 modules import now do not require closing semicolon
+- ECMAScript 6 classes constructors now highlighted
+- Template string support for Typescript, as for ECMAScript 6
+- License added to not minified browser build
+
+
+## Version 8.9.0
+
+New languages:
+
+- *crmsh* by [Kristoffer Gronlund][]
+- *SQF* by [Soren Enevoldsen][]
+
+[Kristoffer Gronlund]: https://github.com/krig
+[Soren Enevoldsen]: https://github.com/senevoldsen90
+
+Notable fixes and improvements to existing languages:
+
+- Added `abstract` and `namespace` keywords to TypeScript by [Daniel Rosenwasser][]
+- Added `label` support to Dockerfile by [Ladislav Prskavec][]
+- Crystal highlighting improved by [Tsuyusato Kitsune][]
+- Missing Swift keywords added by [Nate Cook][]
+- Improve detection of C block comments
+- ~~Scala case classes params highlight fixed~~
+- ~~ECMAScript 6 modules import now do not require closing semicolon~~
+- ~~ECMAScript 6 classes constructors now highlighted~~
+- ~~Template string support for Typescript, as for ECMAScript 6~~
+
+Other notable changes:
+
+- ~~License added to not minified browser build~~
+
+[Kristoffer Gronlund]: https://github.com/krig
+[Søren Enevoldsen]: https://github.com/senevoldsen90
+[Daniel Rosenwasser]: https://github.com/DanielRosenwasser
+[Ladislav Prskavec]: https://github.com/abtris
+[Tsuyusato Kitsune]: https://github.com/MakeNowJust
+[Nate Cook]: https://github.com/natecook1000
+
+
+## Version 8.8.0
+
+New languages:
+
+- *Golo* by [Philippe Charrière][]
+- *GAMS* by [Stefan Bechert][]
+- *IRPF90* by [Anthony Scemama][]
+- *Access logs* by [Oleg Efimov][]
+- *Crystal* by [Tsuyusato Kitsune][]
+
+Notable fixes and improvements to existing languages:
+
+- JavaScript highlighting no longer fails with ES6 default parameters
+- Added keywords `async` and `await` to Python
+- PHP heredoc support improved
+- Allow preprocessor directives within C++ functions
+
+Other notable changes:
+
+- Change versions to X.Y.Z SemVer-compatible format
+- Added ability to build all targets at once
+
+[Philippe Charrière]: https://github.com/k33g
+[Stefan Bechert]: https://github.com/b-pos465
+[Anthony Scemama]: https://github.com/scemama
+[Oleg Efimov]: https://github.com/Sannis
+[Tsuyusato Kitsune]: https://github.com/MakeNowJust
+
+
+## Version 8.7
+
+New languages:
+
+- *Zephir* by [Oleg Efimov][]
+- *Elm* by [Janis Voigtländer][]
+- *XQuery* by [Dirk Kirsten][]
+- *Mojolicious* by [Dotan Dimet][]
+- *AutoIt* by Manh Tuan from [J2TeaM][]
+- *Toml* (ini extension) by [Guillaume Gomez][]
+
+New styles:
+
+- *Hopscotch* by [Jan T. Sott][]
+- *Grayscale* by [MY Sun][]
+
+Notable fixes and improvements to existing languages:
+
+- Fix encoding of images when copied over in certain builds
+- Fix incorrect highlighting of the word "bug" in comments
+- Treat decorators different from matrix multiplication in Python
+- Fix traits inheritance highlighting in Rust
+- Fix incorrect document
+- Oracle keywords added to SQL language definition by [Vadimtro][]
+- Postgres keywords added to SQL language definition by [Benjamin Auder][]
+- Fix registers in x86asm being highlighted as a hex number
+- Fix highlighting for numbers with a leading decimal point
+- Correctly highlight numbers and strings inside of C/C++ macros
+- C/C++ functions now support pointer, reference, and move returns
+
+[Oleg Efimov]: https://github.com/Sannis
+[Guillaume Gomez]: https://github.com/GuillaumeGomez
+[Janis Voigtländer]: https://github.com/jvoigtlaender
+[Jan T. Sott]: https://github.com/idleberg
+[Dirk Kirsten]: https://github.com/dirkk
+[MY Sun]: https://github.com/simonmysun
+[Vadimtro]: https://github.com/Vadimtro
+[Benjamin Auder]: https://github.com/ghost
+[Dotan Dimet]: https://github.com/dotandimet
+[J2TeaM]: https://github.com/J2TeaM
+
+
+## Version 8.6
+
+New languages:
+
+- *C/AL* by [Kenneth Fuglsang][]
+- *DNS zone file* by [Tim Schumacher][]
+- *Ceylon* by [Lucas Werkmeister][]
+- *OpenSCAD* by [Dan Panzarella][]
+- *Inform7* by [Bruno Dias][]
+- *armasm* by [Dan Panzarella][]
+- *TP* by [Jay Strybis][]
+
+New styles:
+
+- *Atelier Cave*, *Atelier Estuary*,
+  *Atelier Plateau* and *Atelier Savanna* by [Bram de Haan][]
+- *Github Gist* by [Louis Barranqueiro][]
+
+Notable fixes and improvements to existing languages:
+
+- Multi-line raw strings from C++11 are now supported
+- Fix class names with dashes in HAML
+- The `async` keyword from ES6/7 is now supported
+- TypeScript functions handle type and parameter complexity better
+- We unified phpdoc/javadoc/yardoc etc modes across all languages
+- CSS .class selectors relevance was dropped to prevent wrong language detection
+- Images is now included to CDN build
+- Release process is now automated
+
+[Bram de Haan]: https://github.com/atelierbram
+[Kenneth Fuglsang]: https://github.com/kfuglsang
+[Louis Barranqueiro]: https://github.com/LouisBarranqueiro
+[Tim Schumacher]: https://github.com/enko
+[Lucas Werkmeister]: https://github.com/lucaswerkmeister
+[Dan Panzarella]: https://github.com/pzl
+[Bruno Dias]: https://github.com/sequitur
+[Jay Strybis]: https://github.com/unreal
+
+
+## Version 8.5
+
+New languages:
+
+- *pf.conf* by [Peter Piwowarski][]
+- *Julia* by [Kenta Sato][]
+- *Prolog* by [Raivo Laanemets][]
+- *Docker* by [Alexis Hénaut][]
+- *Fortran* by [Anthony Scemama][] and [Thomas Applencourt][]
+- *Kotlin* by [Sergey Mashkov][]
+
+New styles:
+
+- *Agate* by [Taufik Nurrohman][]
+- *Darcula* by [JetBrains][]
+- *Atelier Sulphurpool* by [Bram de Haan][]
+- *Android Studio* by [Pedro Oliveira][]
+
+Notable fixes and improvements to existing languages:
+
+- ES6 features in JavaScript are better supported now by [Gu Yiling][].
+- Swift now recognizes body-less method definitions.
+- Single expression functions `def foo, do: ... ` now work in Elixir.
+- More uniform detection of built-in classes in Objective C.
+- Fixes for number literals and processor directives in Rust.
+- HTML `<script>` tag now allows any language, not just JavaScript.
+- Multi-line comments are supported now in MatLab.
+
+[Taufik Nurrohman]: https://github.com/tovic
+[Jet Brains]: https://www.jetbrains.com/
+[Peter Piwowarski]: https://github.com/oldlaptop
+[Kenta Sato]: https://github.com/bicycle1885
+[Bram de Haan]: https://github.com/atelierbram
+[Raivo Laanemets]: https://github.com/rla
+[Alexis Hénaut]: https://github.com/AlexisNo
+[Anthony Scemama]: https://github.com/scemama
+[Pedro Oliveira]: https://github.com/kanytu
+[Gu Yiling]: https://github.com/Justineo
+[Sergey Mashkov]: https://github.com/cy6erGn0m
+[Thomas Applencourt]: https://github.com/TApplencourt
+
+
+## Version 8.4
+
+We've got the new [demo page][]! The obvious new feature is the new look, but
+apart from that it's got smarter: by presenting languages in groups it avoids
+running 10000 highlighting attempts after first load which was slowing it down
+and giving bad overall impression. It is now also being generated from test
+code snippets so the authors of new languages don't have to update both tests
+and the demo page with the same thing.
+
+Other notable changes:
+
+- The `template_comment` class is gone in favor of the more general `comment`.
+- Number parsing unified and improved across languages.
+- C++, Java and C# now use unified grammar to highlight titles in
+  function/method definitions.
+- The browser build is now usable as an AMD module, there's no separate build
+  target for that anymore.
+- OCaml has got a [comprehensive overhaul][ocaml] by [Mickaël Delahaye][].
+- Clojure's data structures and literals are now highlighted outside of lists
+  and we can now highlight Clojure's REPL sessions.
+
+New languages:
+
+- *AspectJ* by [Hakan Özler][]
+- *STEP Part 21* by [Adam Joseph Cook][]
+- *SML* derived by [Edwin Dalorzo][] from OCaml definition
+- *Mercury* by [mucaho][]
+- *Smali* by [Dennis Titze][]
+- *Verilog* by [Jon Evans][]
+- *Stata* by [Brian Quistorff][]
+
+[Hakan Özler]: https://github.com/ozlerhakan
+[Adam Joseph Cook]: https://github.com/adamjcook
+[demo page]: https://highlightjs.org/static/demo/
+[Ivan Sagalaev]: https://github.com/isagalaev
+[Edwin Dalorzo]: https://github.com/edalorzo
+[mucaho]: https://github.com/mucaho
+[Dennis Titze]: https://github.com/titze
+[Jon Evans]: https://github.com/craftyjon
+[Brian Quistorff]: https://github.com/bquistorff
+[ocaml]: https://github.com/isagalaev/highlight.js/pull/608#issue-46190207
+[Mickaël Delahaye]: https://github.com/polazarus
+
+
+## Version 8.3
+
+We streamlined our tool chain, it is now based entirely on node.js instead of
+being a mix of node.js, Python and Java. The build script options and arguments
+remained the same, and we've noted all the changes in the [documentation][b].
+Apart from reducing complexity, the new build script is also faster from not
+having to start Java machine repeatedly. The credits for the work go to [Jeremy
+Hull][].
+
+Some notable fixes:
+
+- PHP and JavaScript mixed in HTML now live happily with each other.
+- JavaScript regexes now understand ES6 flags "u" and "y".
+- `throw` keyword is no longer detected as a method name in Java.
+- Fixed parsing of numbers and symbols in Clojure thanks to [input from Ivan
+  Kleshnin][ik].
+
+New languages in this release:
+
+- *Less* by [Max Mikhailov][]
+- *Stylus* by [Bryant Williams][]
+- *Tcl* by [Radek Liska][]
+- *Puppet* by [Jose Molina Colmenero][]
+- *Processing* by [Erik Paluka][]
+- *Twig* templates by [Luke Holder][]
+- *PowerShell* by [David Mohundro][], based on [the work of Nicholas Blumhardt][ps]
+- *XL* by [Christophe de Dinechin][]
+- *LiveScript* by [Taneli Vatanen][] and [Jen Evers-Corvina][]
+- *ERB* (Ruby in HTML) by [Lucas Mazza][]
+- *Roboconf* by [Vincent Zurczak][]
+
+[b]: http://highlightjs.readthedocs.org/en/latest/building-testing.html
+[Jeremy Hull]: https://github.com/sourrust
+[ik]: https://twitter.com/IvanKleshnin/status/514041599484231680
+[Max Mikhailov]: https://github.com/seven-phases-max
+[Bryant Williams]: https://github.com/scien
+[Radek Liska]: https://github.com/Nindaleth
+[Jose Molina Colmenero]: https://github.com/Moliholy
+[Erik Paluka]: https://github.com/paluka
+[Luke Holder]: https://github.com/lukeholder
+[David Mohundro]: https://github.com/drmohundro
+[ps]: https://github.com/OctopusDeploy/Library/blob/master/app/shared/presentation/highlighting/powershell.js
+[Christophe de Dinechin]: https://github.com/c3d
+[Taneli Vatanen]: https://github.com/Daiz-
+[Jen Evers-Corvina]: https://github.com/sevvie
+[Lucas Mazza]: https://github.com/lucasmazza
+[Vincent Zurczak]: https://github.com/vincent-zurczak
+
+
+## Version 8.2
+
+We've finally got [real tests][test] and [continuous testing on Travis][ci]
+thanks to [Jeremy Hull][] and [Chris Eidhof][]. The tests designed to cover
+everything: language detection, correct parsing of individual language features
+and various special cases. This is a very important change that gives us
+confidence in extending language definitions and refactoring library core.
+
+We're going to redesign the old [demo/test suite][demo] into an interactive
+demo web app. If you're confident front-end developer or designer and want to
+help us with it, drop a comment into [the issue][#542] on GitHub.
+
+[test]: https://github.com/isagalaev/highlight.js/tree/master/test
+[demo]: https://highlightjs.org/static/test.html
+[#542]: https://github.com/isagalaev/highlight.js/issues/542
+[ci]: https://travis-ci.org/isagalaev/highlight.js
+[Jeremy Hull]: https://github.com/sourrust
+[Chris Eidhof]: https://github.com/chriseidhof
+
+As usually there's a handful of new languages in this release:
+
+- *Groovy* by [Guillaume Laforge][]
+- *Dart* by [Maxim Dikun][]
+- *Dust* by [Michael Allen][]
+- *Scheme* by [JP Verkamp][]
+- *G-Code* by [Adam Joseph Cook][]
+- *Q* from Kx Systems by [Sergey Vidyuk][]
+
+[Guillaume Laforge]: https://github.com/glaforge
+[Maxim Dikun]: https://github.com/dikmax
+[Michael Allen]: https://github.com/bfui
+[JP Verkamp]: https://github.com/jpverkamp
+[Adam Joseph Cook]: https://github.com/adamjcook
+[Sergey Vidyuk]: https://github.com/sv
+
+Other improvements:
+
+- [Erik Osheim][] heavily reworked Scala definitions making it richer.
+- [Lucas Mazza][] fixed Ruby hashes highlighting
+- Lisp variants (Lisp, Clojure and Scheme) are unified in regard to naming
+  the first symbol in parentheses: it's "keyword" in general case and also
+  "built_in" for built-in functions in Clojure and Scheme.
+
+[Erik Osheim]: https://github.com/non
+[Lucas Mazza]: https://github.com/lucasmazza
+
+
+## Version 8.1
+
+New languages:
+
+- *Gherkin* by [Sam Pikesley][]
+- *Elixir* by [Josh Adams][]
+- *NSIS* by [Jan T. Sott][]
+- *VIM script* by [Jun Yang][]
+- *Protocol Buffers* by [Dan Tao][]
+- *Nix* by [Domen Kožar][]
+- *x86asm* by [innocenat][]
+- *Cap’n Proto* and *Thrift* by [Oleg Efimov][]
+- *Monkey* by [Arthur Bikmullin][]
+- *TypeScript* by [Panu Horsmalahti][]
+- *Nimrod* by [Flaviu Tamas][]
+- *Gradle* by [Damian Mee][]
+- *Haxe* by [Christopher Kaster][]
+- *Swift* by [Chris Eidhof][] and [Nate Cook][]
+
+New styles:
+
+- *Kimbie*, light and dark variants by [Jan T. Sott][]
+- *Color brewer* by [Fabrício Tavares de Oliveira][]
+- *Codepen.io embed* by [Justin Perry][]
+- *Hybrid* by [Nic West][]
+
+[Sam Pikesley]: https://github.com/pikesley
+[Sindre Sorhus]: https://github.com/sindresorhus
+[Josh Adams]: https://github.com/knewter
+[Jan T. Sott]: https://github.com/idleberg
+[Jun Yang]: https://github.com/harttle
+[Dan Tao]: https://github.com/dtao
+[Domen Kožar]: https://github.com/iElectric
+[innocenat]: https://github.com/innocenat
+[Oleg Efimov]: https://github.com/Sannis
+[Arthur Bikmullin]: https://github.com/devolonter
+[Panu Horsmalahti]: https://github.com/panuhorsmalahti
+[Flaviu Tamas]: https://github.com/flaviut
+[Damian Mee]: https://github.com/chester1000
+[Christopher Kaster]: http://christopher.kaster.ws
+[Fabrício Tavares de Oliveira]: https://github.com/fabriciotav
+[Justin Perry]: https://github.com/ourmaninamsterdam
+[Nic West]: https://github.com/nicwest
+[Chris Eidhof]: https://github.com/chriseidhof
+[Nate Cook]: https://github.com/natecook1000
+
+Other improvements:
+
+- The README is heavily reworked and brought up to date by [Jeremy Hull][].
+- Added [`listLanguages()`][ll] method in the API.
+- Improved C/C++/C# detection.
+- Added a bunch of new language aliases, documented the existing ones. Thanks to
+  [Sindre Sorhus][] for background research.
+- Added phrasal English words to boost relevance in comments.
+- Many improvements to SQL definition made by [Heiko August][],
+  [Nikolay Lisienko][] and [Travis Odom][].
+- The shorter `lang-` prefix for language names in HTML classes supported
+  alongside `language-`. Thanks to [Jeff Escalante][].
+- Ruby's got support for interactive console sessions. Thanks to
+  [Pascal Hurni][].
+- Added built-in functions for R language. Thanks to [Artem A. Klevtsov][].
+- Rust's got definition for lifetime parameters and improved string syntax.
+  Thanks to [Roman Shmatov][].
+- Various improvements to Objective-C definition by [Matt Diephouse][].
+- Fixed highlighting of generics in Java.
+
+[ll]: http://highlightjs.readthedocs.org/en/latest/api.html#listlanguages
+[Sindre Sorhus]: https://github.com/sindresorhus
+[Heiko August]: https://github.com/auge8472
+[Nikolay Lisienko]: https://github.com/neor-ru
+[Travis Odom]: https://github.com/Burstaholic
+[Jeff Escalante]: https://github.com/jenius
+[Pascal Hurni]: https://github.com/phurni
+[Jiyin Yiyong]: https://github.com/jiyinyiyong
+[Artem A. Klevtsov]: https://github.com/unikum
+[Roman Shmatov]: https://github.com/shmatov
+[Jeremy Hull]: https://github.com/sourrust
+[Matt Diephouse]: https://github.com/mdiep
+
+
+## Version 8.0
+
+This new major release is quite a big overhaul bringing both new features and
+some backwards incompatible changes. However, chances are that the majority of
+users won't be affected by the latter: the basic scenario described in the
+README is left intact.
+
+Here's what did change in an incompatible way:
+
+- We're now prefixing all classes located in [CSS classes reference][cr] with
+  `hljs-`, by default, because some class names would collide with other
+  people's stylesheets. If you were using an older version, you might still want
+  the previous behavior, but still want to upgrade. To suppress this new
+  behavior, you would initialize like so:
+
+  ```html
+  <script type="text/javascript">
+    hljs.configure({classPrefix: ''});
+    hljs.initHighlightingOnLoad();
+  </script>
+  ```
+
+- `tabReplace` and `useBR` that were used in different places are also unified
+  into the global options object and are to be set using `configure(options)`.
+  This function is documented in our [API docs][]. Also note that these
+  parameters are gone from `highlightBlock` and `fixMarkup` which are now also
+  rely on `configure`.
+
+- We removed public-facing (though undocumented) object `hljs.LANGUAGES` which
+  was used to register languages with the library in favor of two new methods:
+  `registerLanguage` and `getLanguage`. Both are documented in our [API docs][].
+
+- Result returned from `highlight` and `highlightAuto` no longer contains two
+  separate attributes contributing to relevance score, `relevance` and
+  `keyword_count`. They are now unified in `relevance`.
+
+Another technically compatible change that nonetheless might need attention:
+
+- The structure of the NPM package was refactored, so if you had installed it
+  locally, you'll have to update your paths. The usual `require('highlight.js')`
+  works as before. This is contributed by [Dmitry Smolin][].
+
+New features:
+
+- Languages now can be recognized by multiple names like "js" for JavaScript or
+  "html" for, well, HTML (which earlier insisted on calling it "xml"). These
+  aliases can be specified in the class attribute of the code container in your
+  HTML as well as in various API calls. For now there are only a few very common
+  aliases but we'll expand it in the future. All of them are listed in the
+  [class reference][cr].
+
+- Language detection can now be restricted to a subset of languages relevant in
+  a given context — a web page or even a single highlighting call. This is
+  especially useful for node.js build that includes all the known languages.
+  Another example is a StackOverflow-style site where users specify languages
+  as tags rather than in the markdown-formatted code snippets. This is
+  documented in the [API reference][] (see methods `highlightAuto` and
+  `configure`).
+
+- Language definition syntax streamlined with [variants][] and
+  [beginKeywords][].
+
+New languages and styles:
+
+- *Oxygene* by [Carlo Kok][]
+- *Mathematica* by [Daniel Kvasnička][]
+- *Autohotkey* by [Seongwon Lee][]
+- *Atelier* family of styles in 10 variants by [Bram de Haan][]
+- *Paraíso* styles by [Jan T. Sott][]
+
+Miscellaneous improvements:
+
+- Highlighting `=>` prompts in Clojure.
+- [Jeremy Hull][] fixed a lot of styles for consistency.
+- Finally, highlighting PHP and HTML [mixed in peculiar ways][php-html].
+- Objective C and C# now properly highlight titles in method definition.
+- Big overhaul of relevance counting for a number of languages. Please do report
+  bugs about mis-detection of non-trivial code snippets!
+
+[API reference]: http://highlightjs.readthedocs.org/en/latest/api.html
+
+[cr]: http://highlightjs.readthedocs.org/en/latest/css-classes-reference.html
+[api docs]: http://highlightjs.readthedocs.org/en/latest/api.html
+[variants]: https://groups.google.com/d/topic/highlightjs/VoGC9-1p5vk/discussion
+[beginKeywords]: https://github.com/isagalaev/highlight.js/commit/6c7fdea002eb3949577a85b3f7930137c7c3038d
+[php-html]: https://twitter.com/highlightjs/status/408890903017689088
+
+[Carlo Kok]: https://github.com/carlokok
+[Bram de Haan]: https://github.com/atelierbram
+[Daniel Kvasnička]: https://github.com/dkvasnicka
+[Dmitry Smolin]: https://github.com/dimsmol
+[Jeremy Hull]: https://github.com/sourrust
+[Seongwon Lee]: https://github.com/dlimpid
+[Jan T. Sott]: https://github.com/idleberg
+
+
+## Version 7.5
+
+A catch-up release dealing with some of the accumulated contributions. This one
+is probably will be the last before the 8.0 which will be slightly backwards
+incompatible regarding some advanced use-cases.
+
+One outstanding change in this version is the addition of 6 languages to the
+[hosted script][d]: Markdown, ObjectiveC, CoffeeScript, Apache, Nginx and
+Makefile. It now weighs about 6K more but we're going to keep it under 30K.
+
+New languages:
+
+- OCaml by [Mehdi Dogguy][mehdid] and [Nicolas Braud-Santoni][nbraud]
+- [LiveCode Server][lcs] by [Ralf Bitter][revig]
+- Scilab by [Sylvestre Ledru][sylvestre]
+- basic support for Makefile by [Ivan Sagalaev][isagalaev]
+
+Improvements:
+
+- Ruby's got support for characters like `?A`, `?1`, `?\012` etc. and `%r{..}`
+  regexps.
+- Clojure now allows a function call in the beginning of s-expressions
+  `(($filter "myCount") (arr 1 2 3 4 5))`.
+- Haskell's got new keywords and now recognizes more things like pragmas,
+  preprocessors, modules, containers, FFIs etc. Thanks to [Zena Treep][treep]
+  for the implementation and to [Jeremy Hull][sourrust] for guiding it.
+- Miscellaneous fixes in PHP, Brainfuck, SCSS, Asciidoc, CMake, Python and F#.
+
+[mehdid]: https://github.com/mehdid
+[nbraud]: https://github.com/nbraud
+[revig]: https://github.com/revig
+[lcs]: http://livecode.com/developers/guides/server/
+[sylvestre]: https://github.com/sylvestre
+[isagalaev]: https://github.com/isagalaev
+[treep]: https://github.com/treep
+[sourrust]: https://github.com/sourrust
+[d]: http://highlightjs.org/download/
+
+
+## New core developers
+
+The latest long period of almost complete inactivity in the project coincided
+with growing interest to it led to a decision that now seems completely obvious:
+we need more core developers.
+
+So without further ado let me welcome to the core team two long-time
+contributors: [Jeremy Hull][] and [Oleg
+Efimov][].
+
+Hope now we'll be able to work through stuff faster!
+
+P.S. The historical commit is [here][1] for the record.
+
+[Jeremy Hull]: https://github.com/sourrust
+[Oleg Efimov]: https://github.com/sannis
+[1]: https://github.com/isagalaev/highlight.js/commit/f3056941bda56d2b72276b97bc0dd5f230f2473f
+
+
+## Version 7.4
+
+This long overdue version is a snapshot of the current source tree with all the
+changes that happened during the past year. Sorry for taking so long!
+
+Along with the changes in code highlight.js has finally got its new home at
+<http://highlightjs.org/>, moving from its cradle on Software Maniacs which it
+outgrew a long time ago. Be sure to report any bugs about the site to
+<mailto:info@highlightjs.org>.
+
+On to what's new…
+
+New languages:
+
+- Handlebars templates by [Robin Ward][]
+- Oracle Rules Language by [Jason Jacobson][]
+- F# by [Joans Follesø][]
+- AsciiDoc and Haml by [Dan Allen][]
+- Lasso by [Eric Knibbe][]
+- SCSS by [Kurt Emch][]
+- VB.NET by [Poren Chiang][]
+- Mizar by [Kelley van Evert][]
+
+[Robin Ward]: https://github.com/eviltrout
+[Jason Jacobson]: https://github.com/jayce7
+[Joans Follesø]: https://github.com/follesoe
+[Dan Allen]: https://github.com/mojavelinux
+[Eric Knibbe]: https://github.com/EricFromCanada
+[Kurt Emch]: https://github.com/kemch
+[Poren Chiang]: https://github.com/rschiang
+[Kelley van Evert]: https://github.com/kelleyvanevert
+
+New style themes:
+
+- Monokai Sublime by [noformnocontent][]
+- Railscasts by [Damien White][]
+- Obsidian by [Alexander Marenin][]
+- Docco by [Simon Madine][]
+- Mono Blue by [Ivan Sagalaev][] (uses a single color hue for everything)
+- Foundation by [Dan Allen][]
+
+[noformnocontent]: http://nn.mit-license.org/
+[Damien White]: https://github.com/visoft
+[Alexander Marenin]: https://github.com/ioncreature
+[Simon Madine]: https://github.com/thingsinjars
+[Ivan Sagalaev]: https://github.com/isagalaev
+
+Other notable changes:
+
+- Corrected many corner cases in CSS.
+- Dropped Python 2 version of the build tool.
+- Implemented building for the AMD format.
+- Updated Rust keywords (thanks to [Dmitry Medvinsky][]).
+- Literal regexes can now be used in language definitions.
+- CoffeeScript highlighting is now significantly more robust and rich due to
+  input from [Cédric Néhémie][].
+
+[Dmitry Medvinsky]: https://github.com/dmedvinsky
+[Cédric Néhémie]: https://github.com/abe33
+
+
+## Version 7.3
+
+- Since this version highlight.js no longer works in IE version 8 and older.
+  It's made it possible to reduce the library size and dramatically improve code
+  readability and made it easier to maintain. Time to go forward!
+
+- New languages: AppleScript (by [Nathan Grigg][ng] and [Dr. Drang][dd]) and
+  Brainfuck (by [Evgeny Stepanischev][bolk]).
+
+- Improvements to existing languages:
+
+    - interpreter prompt in Python (`>>>` and `...`)
+    - @-properties and classes in CoffeeScript
+    - E4X in JavaScript (by [Oleg Efimov][oe])
+    - new keywords in Perl (by [Kirk Kimmel][kk])
+    - big Ruby syntax update (by [Vasily Polovnyov][vast])
+    - small fixes in Bash
+
+- Also Oleg Efimov did a great job of moving all the docs for language and style
+  developers and contributors from the old wiki under the source code in the
+  "docs" directory. Now these docs are nicely presented at
+  <http://highlightjs.readthedocs.org/>.
+
+[ng]: https://github.com/nathan11g
+[dd]: https://github.com/drdrang
+[bolk]: https://github.com/bolknote
+[oe]: https://github.com/Sannis
+[kk]: https://github.com/kimmel
+[vast]: https://github.com/vast
+
+
+## Version 7.2
+
+A regular bug-fix release without any significant new features. Enjoy!
+
+
+## Version 7.1
+
+A Summer crop:
+
+- [Marc Fornos][mf] made the definition for Clojure along with the matching
+  style Rainbow (which, of course, works for other languages too).
+- CoffeeScript support continues to improve getting support for regular
+  expressions.
+- Yoshihide Jimbo ported to highlight.js [five Tomorrow styles][tm] from the
+  [project by Chris Kempson][tm0].
+- Thanks to [Casey Duncun][cd] the library can now be built in the popular
+  [AMD format][amd].
+- And last but not least, we've got a fair number of correctness and consistency
+  fixes, including a pretty significant refactoring of Ruby.
+
+[mf]: https://github.com/mfornos
+[tm]: http://jmblog.github.com/color-themes-for-highlightjs/
+[tm0]: https://github.com/ChrisKempson/Tomorrow-Theme
+[cd]: https://github.com/caseman
+[amd]: http://requirejs.org/docs/whyamd.html
+
+
+## Version 7.0
+
+The reason for the new major version update is a global change of keyword syntax
+which resulted in the library getting smaller once again. For example, the
+hosted build is 2K less than at the previous version while supporting two new
+languages.
+
+Notable changes:
+
+- The library now works not only in a browser but also with [node.js][]. It is
+  installable with `npm install highlight.js`. [API][] docs are available on our
+  wiki.
+
+- The new unique feature (apparently) among syntax highlighters is highlighting
+  *HTTP* headers and an arbitrary language in the request body. The most useful
+  languages here are *XML* and *JSON* both of which highlight.js does support.
+  Here's [the detailed post][p] about the feature.
+
+- Two new style themes: a dark "south" *[Pojoaque][]* by Jason Tate and an
+  emulation of*XCode* IDE by [Angel Olloqui][ao].
+
+- Three new languages: *D* by [Aleksandar Ružičić][ar], *R* by [Joe Cheng][jc]
+  and *GLSL* by [Sergey Tikhomirov][st].
+
+- *Nginx* syntax has become a million times smaller and more universal thanks to
+  remaking it in a more generic manner that doesn't require listing all the
+  directives in the known universe.
+
+- Function titles are now highlighted in *PHP*.
+
+- *Haskell* and *VHDL* were significantly reworked to be more rich and correct
+  by their respective maintainers [Jeremy Hull][sr] and [Igor Kalnitsky][ik].
+
+And last but not least, many bugs have been fixed around correctness and
+language detection.
+
+Overall highlight.js currently supports 51 languages and 20 style themes.
+
+[node.js]: http://nodejs.org/
+[api]: http://softwaremaniacs.org/wiki/doku.php/highlight.js:api
+[p]: http://softwaremaniacs.org/blog/2012/05/10/http-and-json-in-highlight-js/en/
+[pojoaque]: http://web-cms-designs.com/ftopict-10-pojoaque-style-for-highlight-js-code-highlighter.html
+[ao]: https://github.com/angelolloqui
+[ar]: https://github.com/raleksandar
+[jc]: https://github.com/jcheng5
+[st]: https://github.com/tikhomirov
+[sr]: https://github.com/sourrust
+[ik]: https://github.com/ikalnitsky
+
+
+## Version 6.2
+
+A lot of things happened in highlight.js since the last version! We've got nine
+new contributors, the discussion group came alive, and the main branch on GitHub
+now counts more than 350 followers. Here are most significant results coming
+from all this activity:
+
+- 5 (five!) new languages: Rust, ActionScript, CoffeeScript, MatLab and
+  experimental support for markdown. Thanks go to [Andrey Vlasovskikh][av],
+  [Alexander Myadzel][am], [Dmytrii Nagirniak][dn], [Oleg Efimov][oe], [Denis
+  Bardadym][db] and [John Crepezzi][jc].
+
+- 2 new style themes: Monokai by [Luigi Maselli][lm] and stylistic imitation of
+  another well-known highlighter Google Code Prettify by [Aahan Krish][ak].
+
+- A vast number of [correctness fixes and code refactorings][log], mostly made
+  by [Oleg Efimov][oe] and [Evgeny Stepanischev][es].
+
+[av]: https://github.com/vlasovskikh
+[am]: https://github.com/myadzel
+[dn]: https://github.com/dnagir
+[oe]: https://github.com/Sannis
+[db]: https://github.com/btd
+[jc]: https://github.com/seejohnrun
+[lm]: http://grigio.org/
+[ak]: https://github.com/geekpanth3r
+[es]: https://github.com/bolknote
+[log]: https://github.com/isagalaev/highlight.js/commits/
+
+
+## Version 6.1 — Solarized
+
+[Jeremy Hull][jh] has implemented my dream feature — a port of [Solarized][]
+style theme famous for being based on the intricate color theory to achieve
+correct contrast and color perception. It is now available for highlight.js in
+both variants — light and dark.
+
+This version also adds a new original style Arta. Its author pumbur maintains a
+[heavily modified fork of highlight.js][pb] on GitHub.
+
+[jh]: https://github.com/sourrust
+[solarized]: http://ethanschoonover.com/solarized
+[pb]: https://github.com/pumbur/highlight.js
+
+
+## Version 6.0
+
+New major version of the highlighter has been built on a significantly
+refactored syntax. Due to this it's even smaller than the previous one while
+supporting more languages!
+
+New languages are:
+
+- Haskell by [Jeremy Hull][sourrust]
+- Erlang in two varieties — module and REPL — made collectively by [Nikolay
+  Zakharov][desh], [Dmitry Kovega][arhibot] and [Sergey Ignatov][ignatov]
+- Objective C by [Valerii Hiora][vhbit]
+- Vala by [Antono Vasiljev][antono]
+- Go by [Stephan Kountso][steplg]
+
+[sourrust]: https://github.com/sourrust
+[desh]: http://desh.su/
+[arhibot]: https://github.com/arhibot
+[ignatov]: https://github.com/ignatov
+[vhbit]: https://github.com/vhbit
+[antono]: https://github.com/antono
+[steplg]: https://github.com/steplg
+
+Also this version is marginally faster and fixes a number of small long-standing
+bugs.
+
+Developer overview of the new language syntax is available in a [blog post about
+recent beta release][beta].
+
+[beta]: http://softwaremaniacs.org/blog/2011/04/25/highlight-js-60-beta/en/
+
+P.S. New version is not yet available on a Yandex CDN, so for now you have to
+download [your own copy][d].
+
+[d]: /soft/highlight/en/download/
+
+
+## Version 5.14
+
+Fixed bugs in HTML/XML detection and relevance introduced in previous
+refactoring.
+
+Also test.html now shows the second best result of language detection by
+relevance.
+
+
+## Version 5.13
+
+Past weekend began with a couple of simple additions for existing languages but
+ended up in a big code refactoring bringing along nice improvements for language
+developers.
+
+### For users
+
+- Description of C++ has got new keywords from the upcoming [C++ 0x][] standard.
+- Description of HTML has got new tags from [HTML 5][].
+- CSS-styles have been unified to use consistent padding and also have lost
+  pop-outs with names of detected languages.
+- [Igor Kalnitsky][ik] has sent two new language descriptions: CMake & VHDL.
+
+This makes total number of languages supported by highlight.js to reach 35.
+
+Bug fixes:
+
+- Custom classes on `<pre>` tags are not being overridden anymore
+- More correct highlighting of code blocks inside non-`<pre>` containers:
+  highlighter now doesn't insist on replacing them with its own container and
+  just replaces the contents.
+- Small fixes in browser compatibility and heuristics.
+
+[c++ 0x]: http://ru.wikipedia.org/wiki/C%2B%2B0x
+[html 5]: http://en.wikipedia.org/wiki/HTML5
+[ik]: http://kalnitsky.org.ua/
+
+### For developers
+
+The most significant change is the ability to include language submodes right
+under `contains` instead of defining explicit named submodes in the main array:
+
+    contains: [
+      'string',
+      'number',
+      {begin: '\\n', end: hljs.IMMEDIATE_RE}
+    ]
+
+This is useful for auxiliary modes needed only in one place to define parsing.
+Note that such modes often don't have `className` and hence won't generate a
+separate `<span>` in the resulting markup. This is similar in effect to
+`noMarkup: true`. All existing languages have been refactored accordingly.
+
+Test file test.html has at last become a real test. Now it not only puts the
+detected language name under the code snippet but also tests if it matches the
+expected one. Test summary is displayed right above all language snippets.
+
+
+## CDN
+
+Fine people at [Yandex][] agreed to host highlight.js on their big fast servers.
+[Link up][l]!
+
+[yandex]: http://yandex.com/
+[l]: http://softwaremaniacs.org/soft/highlight/en/download/
+
+
+## Version 5.10 — "Paris".
+
+Though I'm on a vacation in Paris, I decided to release a new version with a
+couple of small fixes:
+
+- Tomas Vitvar discovered that TAB replacement doesn't always work when used
+  with custom markup in code
+- SQL parsing is even more rigid now and doesn't step over SmallTalk in tests
+
+
+## Version 5.9
+
+A long-awaited version is finally released.
+
+New languages:
+
+- Andrew Fedorov made a definition for Lua
+- a long-time highlight.js contributor [Peter Leonov][pl] made a definition for
+  Nginx config
+- [Vladimir Moskva][vm] made a definition for TeX
+
+[pl]: http://kung-fu-tzu.ru/
+[vm]: http://fulc.ru/
+
+Fixes for existing languages:
+
+- [Loren Segal][ls] reworked the Ruby definition and added highlighting for
+  [YARD][] inline documentation
+- the definition of SQL has become more solid and now it shouldn't be overly
+  greedy when it comes to language detection
+
+[ls]: http://gnuu.org/
+[yard]: http://yardoc.org/
+
+The highlighter has become more usable as a library allowing to do highlighting
+from initialization code of JS frameworks and in ajax methods (see.
+readme.eng.txt).
+
+Also this version drops support for the [WordPress][wp] plugin. Everyone is
+welcome to [pick up its maintenance][p] if needed.
+
+[wp]: http://wordpress.org/
+[p]: http://bazaar.launchpad.net/~isagalaev/+junk/highlight/annotate/342/src/wp_highlight.js.php
+
+
+## Version 5.8
+
+- Jan Berkel has contributed a definition for Scala. +1 to hotness!
+- All CSS-styles are rewritten to work only inside `<pre>` tags to avoid
+  conflicts with host site styles.
+
+
+## Version 5.7.
+
+Fixed escaping of quotes in VBScript strings.
+
+
+## Version 5.5
+
+This version brings a small change: now .ini-files allow digits, underscores and
+square brackets in key names.
+
+
+## Version 5.4
+
+Fixed small but upsetting bug in the packer which caused incorrect highlighting
+of explicitly specified languages. Thanks to Andrew Fedorov for precise
+diagnostics!
+
+
+## Version 5.3
+
+The version to fulfil old promises.
+
+The most significant change is that highlight.js now preserves custom user
+markup in code along with its own highlighting markup. This means that now it's
+possible to use, say, links in code. Thanks to [Vladimir Dolzhenko][vd] for the
+[initial proposal][1] and for making a proof-of-concept patch.
+
+Also in this version:
+
+- [Vasily Polovnyov][vp] has sent a GitHub-like style and has implemented
+  support for CSS @-rules and Ruby symbols.
+- Yura Zaripov has sent two styles: Brown Paper and School Book.
+- Oleg Volchkov has sent a definition for [Parser 3][p3].
+
+[1]: http://softwaremaniacs.org/forum/highlightjs/6612/
+[p3]: http://www.parser.ru/
+[vp]: http://vasily.polovnyov.ru/
+[vd]: http://dolzhenko.blogspot.com/
+
+
+## Version 5.2
+
+- at last it's possible to replace indentation TABs with something sensible
+  (e.g. 2 or 4 spaces)
+- new keywords and built-ins for 1C by Sergey Baranov
+- a couple of small fixes to Apache highlighting
+
+
+## Version 5.1
+
+This is one of those nice version consisting entirely of new and shiny
+contributions!
+
+- [Vladimir Ermakov][vooon] created highlighting for AVR Assembler
+- [Ruslan Keba][rukeba] created highlighting for Apache config file. Also his
+  original visual style for it is now available for all highlight.js languages
+  under the name "Magula".
+- [Shuen-Huei Guan][drake] (aka Drake) sent new keywords for RenderMan
+  languages. Also thanks go to [Konstantin Evdokimenko][ke] for his advice on
+  the matter.
+
+[vooon]: http://vehq.ru/about/
+[rukeba]: http://rukeba.com/
+[drake]: http://drakeguan.org/
+[ke]: http://k-evdokimenko.moikrug.ru/
+
+
+## Version 5.0
+
+The main change in the new major version of highlight.js is a mechanism for
+packing several languages along with the library itself into a single compressed
+file. Now sites using several languages will load considerably faster because
+the library won't dynamically include additional files while loading.
+
+Also this version fixes a long-standing bug with Javascript highlighting that
+couldn't distinguish between regular expressions and division operations.
+
+And as usually there were a couple of minor correctness fixes.
+
+Great thanks to all contributors! Keep using highlight.js.
+
+
+## Version 4.3
+
+This version comes with two contributions from [Jason Diamond][jd]:
+
+- language definition for C# (yes! it was a long-missed thing!)
+- Visual Studio-like highlighting style
+
+Plus there are a couple of minor bug fixes for parsing HTML and XML attributes.
+
+[jd]: http://jason.diamond.name/weblog/
+
+
+## Version 4.2
+
+The biggest news is highlighting for Lisp, courtesy of Vasily Polovnyov. It's
+somewhat experimental meaning that for highlighting "keywords" it doesn't use
+any pre-defined set of a Lisp dialect. Instead it tries to highlight first word
+in parentheses wherever it makes sense. I'd like to ask people programming in
+Lisp to confirm if it's a good idea and send feedback to [the forum][f].
+
+Other changes:
+
+- Smalltalk was excluded from DEFAULT_LANGUAGES to save traffic
+- [Vladimir Epifanov][voldmar] has implemented javascript style switcher for
+  test.html
+- comments now allowed inside Ruby function definition
+- [MEL][] language from [Shuen-Huei Guan][drake]
+- whitespace now allowed between `<pre>` and `<code>`
+- better auto-detection of C++ and PHP
+- HTML allows embedded VBScript (`<% .. %>`)
+
+[f]: http://softwaremaniacs.org/forum/highlightjs/
+[voldmar]: http://voldmar.ya.ru/
+[mel]: http://en.wikipedia.org/wiki/Maya_Embedded_Language
+[drake]: http://drakeguan.org/
+
+
+## Version 4.1
+
+Languages:
+
+- Bash from Vah
+- DOS bat-files from Alexander Makarov (Sam)
+- Diff files from Vasily Polovnyov
+- Ini files from myself though initial idea was from Sam
+
+Styles:
+
+- Zenburn from Vladimir Epifanov, this is an imitation of a
+  [well-known theme for Vim][zenburn].
+- Ascetic from myself, as a realization of ideals of non-flashy highlighting:
+  just one color in only three gradations :-)
+
+In other news. [One small bug][bug] was fixed, built-in keywords were added for
+Python and C++ which improved auto-detection for the latter (it was shame that
+[my wife's blog][alenacpp] had issues with it from time to time). And lastly
+thanks go to Sam for getting rid of my stylistic comments in code that were
+getting in the way of [JSMin][].
+
+[zenburn]: http://en.wikipedia.org/wiki/Zenburn
+[alenacpp]: http://alenacpp.blogspot.com/
+[bug]: http://softwaremaniacs.org/forum/viewtopic.php?id=1823
+[jsmin]: http://code.google.com/p/jsmin-php/
+
+
+## Version 4.0
+
+New major version is a result of vast refactoring and of many contributions.
+
+Visible new features:
+
+- Highlighting of embedded languages. Currently is implemented highlighting of
+  Javascript and CSS inside HTML.
+- Bundled 5 ready-made style themes!
+
+Invisible new features:
+
+- Highlight.js no longer pollutes global namespace. Only one object and one
+  function for backward compatibility.
+- Performance is further increased by about 15%.
+
+Changing of a major version number caused by a new format of language definition
+files. If you use some third-party language files they should be updated.
+
+
+## Version 3.5
+
+A very nice version in my opinion fixing a number of small bugs and slightly
+increased speed in a couple of corner cases. Thanks to everybody who reports
+bugs in he [forum][f] and by email!
+
+There is also a new language — XML. A custom XML formerly was detected as HTML
+and didn't highlight custom tags. In this version I tried to make custom XML to
+be detected and highlighted by its own rules. Which by the way include such
+things as CDATA sections and processing instructions (`<? ... ?>`).
+
+[f]: http://softwaremaniacs.org/forum/viewforum.php?id=6
+
+
+## Version 3.3
+
+[Vladimir Gubarkov][xonix] has provided an interesting and useful addition.
+File export.html contains a little program that shows and allows to copy and
+paste an HTML code generated by the highlighter for any code snippet. This can
+be useful in situations when one can't use the script itself on a site.
+
+
+[xonix]: http://xonixx.blogspot.com/
+
+
+## Version 3.2 consists completely of contributions:
+
+- Vladimir Gubarkov has described SmallTalk
+- Yuri Ivanov has described 1C
+- Peter Leonov has packaged the highlighter as a Firefox extension
+- Vladimir Ermakov has compiled a mod for phpBB
+
+Many thanks to you all!
+
+
+## Version 3.1
+
+Three new languages are available: Django templates, SQL and Axapta. The latter
+two are sent by [Dmitri Roudakov][1]. However I've almost entirely rewrote an
+SQL definition but I'd never started it be it from the ground up :-)
+
+The engine itself has got a long awaited feature of grouping keywords
+("keyword", "built-in function", "literal"). No more hacks!
+
+[1]: http://roudakov.ru/
+
+
+## Version 3.0
+
+It is major mainly because now highlight.js has grown large and has become
+modular. Now when you pass it a list of languages to highlight it will
+dynamically load into a browser only those languages.
+
+Also:
+
+- Konstantin Evdokimenko of [RibKit][] project has created a highlighting for
+  RenderMan Shading Language and RenderMan Interface Bytestream. Yay for more
+  languages!
+- Heuristics for C++ and HTML got better.
+- I've implemented (at last) a correct handling of backslash escapes in C-like
+  languages.
+
+There is also a small backwards incompatible change in the new version. The
+function initHighlighting that was used to initialize highlighting instead of
+initHighlightingOnLoad a long time ago no longer works. If you by chance still
+use it — replace it with the new one.
+
+[RibKit]: http://ribkit.sourceforge.net/
+
+
+## Version 2.9
+
+Highlight.js is a parser, not just a couple of regular expressions. That said
+I'm glad to announce that in the new version 2.9 has support for:
+
+- in-string substitutions for Ruby -- `#{...}`
+- strings from from numeric symbol codes (like #XX) for Delphi
+
+
+## Version 2.8
+
+A maintenance release with more tuned heuristics. Fully backwards compatible.
+
+
+## Version 2.7
+
+- Nikita Ledyaev presents highlighting for VBScript, yay!
+- A couple of bugs with escaping in strings were fixed thanks to Mickle
+- Ongoing tuning of heuristics
+
+Fixed bugs were rather unpleasant so I encourage everyone to upgrade!
+
+
+## Version 2.4
+
+- Peter Leonov provides another improved highlighting for Perl
+- Javascript gets a new kind of keywords — "literals". These are the words
+  "true", "false" and "null"
+
+Also highlight.js homepage now lists sites that use the library. Feel free to
+add your site by [dropping me a message][mail] until I find the time to build a
+submit form.
+
+[mail]: mailto:Maniac@SoftwareManiacs.Org
+
+
+## Version 2.3
+
+This version fixes IE breakage in previous version. My apologies to all who have
+already downloaded that one!
+
+
+## Version 2.2
+
+- added highlighting for Javascript
+- at last fixed parsing of Delphi's escaped apostrophes in strings
+- in Ruby fixed highlighting of keywords 'def' and 'class', same for 'sub' in
+  Perl
+
+
+## Version 2.0
+
+- Ruby support by [Anton Kovalyov][ak]
+- speed increased by orders of magnitude due to new way of parsing
+- this same way allows now correct highlighting of keywords in some tricky
+  places (like keyword "End" at the end of Delphi classes)
+
+[ak]: http://anton.kovalyov.net/
+
+
+## Version 1.0
+
+Version 1.0 of javascript syntax highlighter is released!
+
+It's the first version available with English description. Feel free to post
+your comments and question to [highlight.js forum][forum]. And don't be afraid
+if you find there some fancy Cyrillic letters -- it's for Russian users too :-)
+
+[forum]: http://softwaremaniacs.org/forum/viewforum.php?id=6
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/README.md b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/README.md
index 0ee9637..6cf5235 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/README.md
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/README.md
@@ -1,167 +1,186 @@
 # Highlight.js
 
-Highlight.js highlights syntax in code examples on blogs, forums and,
-in fact, on any web page. It's very easy to use because it works
-automatically: finds blocks of code, detects a language, highlights it.
+[![Build Status](https://travis-ci.org/highlightjs/highlight.js.svg?branch=master)](https://travis-ci.org/highlightjs/highlight.js)
 
-Autodetection can be fine tuned when it fails by itself (see "Heuristics").
+Highlight.js is a syntax highlighter written in JavaScript. It works in
+the browser as well as on the server. It works with pretty much any
+markup, doesn’t depend on any framework, and has automatic language
+detection.
 
+## Getting Started
 
-## Basic usage
-
-Link the library and a stylesheet from your page and hook highlighting to
-the page load event:
+The bare minimum for using highlight.js on a web page is linking to the
+library along with one of the styles and calling
+[`initHighlightingOnLoad`][1]:
 
 ```html
-<link rel="stylesheet" href="styles/default.css">
-<script src="highlight.pack.js"></script>
+<link rel="stylesheet" href="/path/to/styles/default.css">
+<script src="/path/to/highlight.pack.js"></script>
 <script>hljs.initHighlightingOnLoad();</script>
 ```
 
-This will highlight all code on the page marked up as `<pre><code> .. </code></pre>`.
-If you use different markup or need to apply highlighting dynamically, read
-"Custom initialization" below.
-
-- You can download your own customized version of "highlight.pack.js" or
-  use the hosted one as described on the download page:
-  <http://highlightjs.org/download/>
-
-- Style themes are available in the download package or as hosted files.
-  To create a custom style for your site see the class reference in the file
-  [CSS classes reference][cr] from the downloaded package.
-
-[cr]: http://highlightjs.readthedocs.org/en/latest/css-classes-reference.html
-
-
-## node.js
-
-Highlight.js can be used under node.js. The package with all supported languages is
-installable from NPM:
-
-    npm install highlight.js
-
-Alternatively, you can build it from the source with only languages you need:
-
-    python3 tools/build.py -tnode lang1 lang2 ..
-
-Using the library:
-
-```javascript
-var hljs = require('highlight.js');
-
-// If you know the language
-hljs.highlight(lang, code).value;
-
-// Automatic language detection
-hljs.highlightAuto(code).value;
-```
-
-
-## AMD
-
-Highlight.js can be used with an AMD loader.  You will need to build it from
-source in order to do so:
-
-```bash
-$ python3 tools/build.py -tamd lang1 lang2 ..
-```
-
-Which will generate a `build/highlight.pack.js` which will load as an AMD
-module with support for the built languages and can be used like so:
-
-```javascript
-require(["highlight.js/build/highlight.pack"], function(hljs){
-
-  // If you know the language
-  hljs.highlight(lang, code).value;
-
-  // Automatic language detection
-  hljs.highlightAuto(code).value;
-});
-```
-
-
-## Tab replacement
-
-You can replace TAB ('\x09') characters used for indentation in your code
-with some fixed number of spaces or with a `<span>` to give them special
-styling:
-
-```html
-<script type="text/javascript">
-  hljs.configure({tabReplace: '    '}); // 4 spaces
-  // ... or
-  hljs.configure({tabReplace: '<span class="indent">\t</span>'});
-
-  hljs.initHighlightingOnLoad();
-</script>
-```
-
-## Custom initialization
-
-If you use different markup for code blocks you can initialize them manually
-with `highlightBlock(code)` function. It takes a DOM element containing the
-code to highlight and optionally a string with which to replace TAB
-characters.
-
-Initialization using, for example, jQuery might look like this:
-
-```javascript
-$(document).ready(function() {
-  $('pre code').each(function(i, e) {hljs.highlightBlock(e)});
-});
-```
-
-You can use `highlightBlock` to highlight blocks dynamically inserted into
-the page. Just make sure you don't do it twice for already highlighted
-blocks.
-
-If your code container relies on `<br>` tags instead of line breaks (i.e. if
-it's not `<pre>`) set the `useBR` option to `true`:
-
-```javascript
-hljs.configure({useBR: true});
-$('div.code').each(function(i, e) {hljs.highlightBlock(e)});
-```
-
-
-## Heuristics
-
-Autodetection of a code's language is done using a simple heuristic:
-the program tries to highlight a fragment with all available languages and
-counts all syntactic structures that it finds along the way. The language
-with greatest count wins.
-
-This means that in short fragments the probability of an error is high
-(and it really happens sometimes). In this cases you can set the fragment's
-language explicitly by assigning a class to the `<code>` element:
+This will find and highlight code inside of `<pre><code>` tags; it tries
+to detect the language automatically. If automatic detection doesn’t
+work for you, you can specify the language in the `class` attribute:
 
 ```html
 <pre><code class="html">...</code></pre>
 ```
 
-You can use class names recommended in HTML5: "language-html",
-"language-php". Classes also can be assigned to the `<pre>` element.
+The list of supported language classes is available in the [class
+reference][2].  Classes can also be prefixed with either `language-` or
+`lang-`.
 
-To disable highlighting of a fragment altogether use "no-highlight" class:
+To make arbitrary text look like code, but without highlighting, use the
+`plaintext` class:
 
 ```html
-<pre><code class="no-highlight">...</code></pre>
+<pre><code class="plaintext">...</code></pre>
+```
+
+To disable highlighting altogether use the `nohighlight` class:
+
+```html
+<pre><code class="nohighlight">...</code></pre>
+```
+
+## Custom Initialization
+
+When you need a bit more control over the initialization of
+highlight.js, you can use the [`highlightBlock`][3] and [`configure`][4]
+functions. This allows you to control *what* to highlight and *when*.
+
+Here’s an equivalent way to calling [`initHighlightingOnLoad`][1] using
+jQuery:
+
+```javascript
+$(document).ready(function() {
+  $('pre code').each(function(i, block) {
+    hljs.highlightBlock(block);
+  });
+});
+```
+
+You can use any tags instead of `<pre><code>` to mark up your code. If
+you don't use a container that preserves line breaks you will need to
+configure highlight.js to use the `<br>` tag:
+
+```javascript
+hljs.configure({useBR: true});
+
+$('div.code').each(function(i, block) {
+  hljs.highlightBlock(block);
+});
+```
+
+For other options refer to the documentation for [`configure`][4].
+
+
+## Web Workers
+
+You can run highlighting inside a web worker to avoid freezing the browser
+window while dealing with very big chunks of code.
+
+In your main script:
+
+```javascript
+addEventListener('load', function() {
+  var code = document.querySelector('#code');
+  var worker = new Worker('worker.js');
+  worker.onmessage = function(event) { code.innerHTML = event.data; }
+  worker.postMessage(code.textContent);
+})
+```
+
+In worker.js:
+
+```javascript
+onmessage = function(event) {
+  importScripts('<path>/highlight.pack.js');
+  var result = self.hljs.highlightAuto(event.data);
+  postMessage(result.value);
+}
 ```
 
 
-## Export
+## Getting the Library
 
-File export.html contains a little program that allows you to paste in a code
-snippet and then copy and paste the resulting HTML code generated by the
-highlighter. This is useful in situations when you can't use the script itself
-on a site.
+You can get highlight.js as a hosted, or custom-build, browser script or
+as a server module. Right out of the box the browser script supports
+both AMD and CommonJS, so if you wish you can use RequireJS or
+Browserify without having to build from source. The server module also
+works perfectly fine with Browserify, but there is the option to use a
+build specific to browsers rather than something meant for a server.
+Head over to the [download page][5] for all the options.
+
+**Don't link to GitHub directly.** The library is not supposed to work straight
+from the source, it requires building. If none of the pre-packaged options
+work for you refer to the [building documentation][6].
+
+**The CDN-hosted package doesn't have all the languages.** Otherwise it'd be
+too big. If you don't see the language you need in the ["Common" section][5],
+it can be added manually:
+
+```html
+<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/languages/go.min.js"></script>
+```
+
+**On Almond.** You need to use the optimizer to give the module a name. For
+example:
+
+```
+r.js -o name=hljs paths.hljs=/path/to/highlight out=highlight.js
+```
 
 
-## Meta
+### CommonJS
 
-- Version: 8.0
-- URL:     http://highlightjs.org/
+You can import Highlight.js as a CommonJS-module:
 
-For the license terms see LICENSE files.
-For authors and contributors see AUTHORS.en.txt file.
+```bash
+npm install highlight.js --save
+```
+
+In your application:
+
+```javascript
+import hljs from 'highlight.js';
+```
+
+The default import imports all languages! Therefore it is likely to be more efficient to import only the library and the languages you need:
+
+```javascript
+import hljs from 'highlight.js/lib/highlight';
+import javascript from 'highlight.js/lib/languages/javascript';
+hljs.registerLanguage('javascript', javascript);
+```
+
+To set the syntax highlighting style, if your build tool processes CSS from your JavaScript entry point, you can import the stylesheet directly into your CommonJS-module:
+
+```javascript
+import hljs from 'highlight.js/lib/highlight';
+import 'highlight.js/styles/github.css'
+```
+
+## License
+
+Highlight.js is released under the BSD License. See [LICENSE][7] file
+for details.
+
+## Links
+
+The official site for the library is at <https://highlightjs.org/>.
+
+Further in-depth documentation for the API and other topics is at
+<http://highlightjs.readthedocs.io/>.
+
+Authors and contributors are listed in the [AUTHORS.en.txt][8] file.
+
+[1]: http://highlightjs.readthedocs.io/en/latest/api.html#inithighlightingonload
+[2]: http://highlightjs.readthedocs.io/en/latest/css-classes-reference.html
+[3]: http://highlightjs.readthedocs.io/en/latest/api.html#highlightblock-block
+[4]: http://highlightjs.readthedocs.io/en/latest/api.html#configure-options
+[5]: https://highlightjs.org/download/
+[6]: http://highlightjs.readthedocs.io/en/latest/building-testing.html
+[7]: https://github.com/highlightjs/highlight.js/blob/master/LICENSE
+[8]: https://github.com/highlightjs/highlight.js/blob/master/AUTHORS.en.txt
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/README.ru.md b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/README.ru.md
index 0d0e0fe..44285f6 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/README.ru.md
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/README.ru.md
@@ -1,171 +1,142 @@
 # Highlight.js
 
-Highlight.js нужен для подсветки синтаксиса в примерах кода в блогах,
-форумах и вообще на любых веб-страницах. Пользоваться им очень просто,
-потому что работает он автоматически: сам находит блоки кода, сам
-определяет язык, сам подсвечивает.
-
-Автоопределением языка можно управлять, когда оно не справляется само (см.
-дальше "Эвристика").
+Highlight.js — это инструмент для подсветки синтаксиса, написанный на JavaScript. Он работает
+и в браузере, и на сервере. Он работает с практически любой HTML разметкой, не
+зависит от каких-либо фреймворков и умеет автоматически определять язык.
 
 
-## Простое использование
+## Начало работы
 
-Подключите библиотеку и стиль на страницу и повесть вызов подсветки на
-загрузку страницы:
+Минимум, что нужно сделать для использования highlight.js на веб-странице — это
+подключить библиотеку, CSS-стили и вызывать [`initHighlightingOnLoad`][1]:
 
 ```html
-<link rel="stylesheet" href="styles/default.css">
-<script src="highlight.pack.js"></script>
+<link rel="stylesheet" href="/path/to/styles/default.css">
+<script src="/path/to/highlight.pack.js"></script>
 <script>hljs.initHighlightingOnLoad();</script>
 ```
 
-Весь код на странице, обрамлённый в теги `<pre><code> .. </code></pre>`
-будет автоматически подсвечен. Если вы используете другие теги или хотите
-подсвечивать блоки кода динамически, читайте "Инициализацию вручную" ниже.
-
-- Вы можете скачать собственную версию "highlight.pack.js" или сослаться
-  на захостенный файл, как описано на странице загрузки:
-  <http://highlightjs.org/download/>
-
-- Стилевые темы можно найти в загруженном архиве или также использовать
-  захостенные. Чтобы сделать собственный стиль для своего сайта, вам
-  будет полезен [CSS classes reference][cr], который тоже есть в архиве.
-
-[cr]: http://highlightjs.readthedocs.org/en/latest/css-classes-reference.html
-
-
-## node.js
-
-Highlight.js можно использовать в node.js. Библиотеку со всеми возможными языками можно
-установить с NPM:
-
-    npm install highlight.js
-
-Также её можно собрать из исходников с только теми языками, которые нужны:
-
-    python3 tools/build.py -tnode lang1 lang2 ..
-
-Использование библиотеки:
-
-```javascript
-var hljs = require('highlight.js');
-
-// Если вы знаете язык
-hljs.highlight(lang, code).value;
-
-// Автоопределение языка
-hljs.highlightAuto(code).value;
-```
-
-
-## AMD
-
-Highlight.js можно использовать с загрузчиком AMD-модулей.  Для этого его
-нужно собрать из исходников следующей командой:
-
-```bash
-$ python3 tools/build.py -tamd lang1 lang2 ..
-```
-
-Она создаст файл `build/highlight.pack.js`, который является загружаемым
-AMD-модулем и содержит все выбранные при сборке языки. Используется он так:
-
-```javascript
-require(["highlight.js/build/highlight.pack"], function(hljs){
-
-  // Если вы знаете язык
-  hljs.highlight(lang, code).value;
-
-  // Автоопределение языка
-  hljs.highlightAuto(code).value;
-});
-```
-
-
-## Замена TABов
-
-Также вы можете заменить символы TAB ('\x09'), используемые для отступов, на
-фиксированное количество пробелов или на отдельный `<span>`, чтобы задать ему
-какой-нибудь специальный стиль:
-
-```html
-<script type="text/javascript">
-  hljs.configure({tabReplace: '    '}); // 4 spaces
-  // ... or
-  hljs.configure({tabReplace: '<span class="indent">\t</span>'});
-
-  hljs.initHighlightingOnLoad();
-</script>
-```
-
-
-## Инициализация вручную
-
-Если вы используете другие теги для блоков кода, вы можете инициализировать их
-явно с помощью функции `highlightBlock(code)`. Она принимает DOM-элемент с
-текстом расцвечиваемого кода и опционально - строчку для замены символов TAB.
-
-Например с использованием jQuery код инициализации может выглядеть так:
-
-```javascript
-$(document).ready(function() {
-  $('pre code').each(function(i, e) {hljs.highlightBlock(e)});
-});
-```
-
-`highlightBlock` можно также использовать, чтобы подсветить блоки кода,
-добавленные на страницу динамически. Только убедитесь, что вы не делаете этого
-повторно для уже раскрашенных блоков.
-
-Если ваш блок кода использует `<br>` вместо переводов строки (т.е. если это не
-`<pre>`), включите опцию `useBR`:
-
-```javascript
-hljs.configure({useBR: true});
-$('div.code').each(function(i, e) {hljs.highlightBlock(e)});
-```
-
-
-## Эвристика
-
-Определение языка, на котором написан фрагмент, делается с помощью
-довольно простой эвристики: программа пытается расцветить фрагмент всеми
-языками подряд, и для каждого языка считает количество подошедших
-синтаксически конструкций и ключевых слов. Для какого языка нашлось больше,
-тот и выбирается.
-
-Это означает, что в коротких фрагментах высока вероятность ошибки, что
-периодически и случается. Чтобы указать язык фрагмента явно, надо написать
-его название в виде класса к элементу `<code>`:
+Библиотека найдёт и раскрасит код внутри тегов `<pre><code>`, попытавшись
+автоматически определить язык. Когда автоопределение не срабатывает, можно явно
+указать язык в атрибуте class:
 
 ```html
 <pre><code class="html">...</code></pre>
 ```
 
-Можно использовать рекомендованные в HTML5 названия классов:
-"language-html", "language-php". Также можно назначать классы на элемент
-`<pre>`.
+Список поддерживаемых классов языков доступен в [справочнике по классам][2].
+Класс также можно предварить префиксами `language-` или `lang-`.
 
-Чтобы запретить расцветку фрагмента вообще, используется класс "no-highlight":
+Чтобы отключить подсветку для какого-то блока, используйте класс `nohighlight`:
 
 ```html
-<pre><code class="no-highlight">...</code></pre>
+<pre><code class="nohighlight">...</code></pre>
+```
+
+## Инициализация вручную
+
+Чтобы иметь чуть больше контроля за инициализацией подсветки, вы можете
+использовать функции [`highlightBlock`][3] и [`configure`][4]. Таким образом
+можно управлять тем, *что* и *когда* подсвечивать.
+
+Вот пример инициализации, эквивалентной вызову [`initHighlightingOnLoad`][1], но
+с использованием jQuery:
+
+```javascript
+$(document).ready(function() {
+  $('pre code').each(function(i, block) {
+    hljs.highlightBlock(block);
+  });
+});
+```
+
+Вы можете использовать любые теги разметки вместо `<pre><code>`. Если
+используете контейнер, не сохраняющий переводы строк, вам нужно сказать
+highlight.js использовать для них тег `<br>`:
+
+```javascript
+hljs.configure({useBR: true});
+
+$('div.code').each(function(i, block) {
+  hljs.highlightBlock(block);
+});
+```
+
+Другие опции можно найти в документации функции [`configure`][4].
+
+
+## Web Workers
+
+Подсветку можно запустить внутри web worker'а, чтобы окно
+браузера не подтормаживало при работе с большими кусками кода.
+
+В основном скрипте:
+
+```javascript
+addEventListener('load', function() {
+  var code = document.querySelector('#code');
+  var worker = new Worker('worker.js');
+  worker.onmessage = function(event) { code.innerHTML = event.data; }
+  worker.postMessage(code.textContent);
+})
+```
+
+В worker.js:
+
+```javascript
+onmessage = function(event) {
+  importScripts('<path>/highlight.pack.js');
+  var result = self.hljs.highlightAuto(event.data);
+  postMessage(result.value);
+}
 ```
 
 
-## Экспорт
+## Установка библиотеки
 
-В файле export.html находится небольшая программка, которая показывает и дает
-скопировать непосредственно HTML-код подсветки для любого заданного фрагмента кода.
-Это может понадобится например на сайте, на котором нельзя подключить сам скрипт
-highlight.js.
+Highlight.js можно использовать в браузере прямо с CDN хостинга или скачать
+индивидуальную сборку, а также установив модуль на сервере. На
+[странице загрузки][5] подробно описаны все варианты.
+
+**Не подключайте GitHub напрямую.** Библиотека не предназначена для
+использования в виде исходного кода, а требует отдельной сборки. Если вам не
+подходит ни один из готовых вариантов, читайте [документацию по сборке][6].
+
+**Файл на CDN содержит не все языки.** Иначе он будет слишком большого размера.
+Если нужного вам языка нет в [категории "Common"][5], можно дообавить его
+вручную:
+
+```html
+<script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.4.0/languages/go.min.js"></script>
+```
+
+**Про Almond.** Нужно задать имя модуля в оптимизаторе, например:
+
+```
+r.js -o name=hljs paths.hljs=/path/to/highlight out=highlight.js
+```
 
 
-## Координаты
+## Лицензия
 
-- Версия: 8.0
-- URL:    http://highlightjs.org/
+Highlight.js распространяется под лицензией BSD. Подробнее читайте файл
+[LICENSE][7].
 
-Лицензионное соглашение читайте в файле LICENSE.
-Список авторов и соавторов читайте в файле AUTHORS.ru.txt
+
+## Ссылки
+
+Официальный сайт билиотеки расположен по адресу <https://highlightjs.org/>.
+
+Более подробная документация по API и другим темам расположена на
+<http://highlightjs.readthedocs.io/>.
+
+Авторы и контрибьюторы перечислены в файле [AUTHORS.ru.txt][8] file.
+
+[1]: http://highlightjs.readthedocs.io/en/latest/api.html#inithighlightingonload
+[2]: http://highlightjs.readthedocs.io/en/latest/css-classes-reference.html
+[3]: http://highlightjs.readthedocs.io/en/latest/api.html#highlightblock-block
+[4]: http://highlightjs.readthedocs.io/en/latest/api.html#configure-options
+[5]: https://highlightjs.org/download/
+[6]: http://highlightjs.readthedocs.io/en/latest/building-testing.html
+[7]: https://github.com/highlightjs/highlight.js/blob/master/LICENSE
+[8]: https://github.com/highlightjs/highlight.js/blob/master/AUTHORS.ru.txt
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/highlight.pack.js b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/highlight.pack.js
index 2f0a664..7a7b336 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/highlight.pack.js
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/highlight.pack.js
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new file mode 100644
index 0000000..b93b742
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/a11y-dark.css
@@ -0,0 +1,99 @@
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+/* @author: ericwbailey */
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+  color: #ffd700;
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diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/a11y-light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/a11y-light.css
new file mode 100644
index 0000000..f1bf8f3
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/a11y-light.css
@@ -0,0 +1,99 @@
+/* a11y-light theme */
+/* Based on the Tomorrow Night Eighties theme: https://github.com/isagalaev/highlight.js/blob/master/src/styles/tomorrow-night-eighties.css */
+/* @author: ericwbailey */
+
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+  color: #696969;
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+}
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+  color: #007faa;
+}
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+  color: #7928a1;
+}
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diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/agate.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/agate.css
new file mode 100644
index 0000000..8d64547
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/agate.css
@@ -0,0 +1,108 @@
+/*!
+ * Agate by Taufik Nurrohman <https://github.com/tovic>
+ * ----------------------------------------------------
+ *
+ * #ade5fc
+ * #a2fca2
+ * #c6b4f0
+ * #d36363
+ * #fcc28c
+ * #fc9b9b
+ * #ffa
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+ * #333
+ * #62c8f3
+ * #888
+ *
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+
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+  overflow-x: auto;
+  padding: 0.5em;
+  background: #333;
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+}
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+  font-weight: bold;
+}
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+  font-style: italic;
+}
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+  color: #62c8f3;
+}
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+  color: #ade5fc;
+}
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+}
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+  color: #d36363;
+}
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+}
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+}
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+  text-decoration: underline;
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diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/an-old-hope.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/an-old-hope.css
new file mode 100644
index 0000000..a6d56f4
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/an-old-hope.css
@@ -0,0 +1,89 @@
+/* 
+
+An Old Hope – Star Wars Syntax (c) Gustavo Costa <gusbemacbe@gmail.com>
+Original theme - Ocean Dark Theme – by https://github.com/gavsiu
+Based on Jesse Leite's Atom syntax theme 'An Old Hope' – https://github.com/JesseLeite/an-old-hope-syntax-atom
+
+*/
+
+/* Death Star Comment */
+.hljs-comment,
+.hljs-quote 
+{
+  color: #B6B18B;
+}
+
+/* Darth Vader */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-tag,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-regexp,
+.hljs-deletion 
+{
+  color: #EB3C54;
+}
+
+/* Threepio */
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+.hljs-builtin-name,
+.hljs-literal,
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+.hljs-params,
+.hljs-meta,
+.hljs-link 
+{
+  color: #E7CE56;
+}
+
+/* Luke Skywalker */
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+{
+  color: #EE7C2B;
+}
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+/* Obi Wan Kenobi */
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+.hljs-symbol,
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+{
+  color: #4FB4D7;
+}
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+{
+  color: #78BB65;
+}
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+{
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+
+/* Millenium Falcon */
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+  background: #1C1D21;
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+{
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diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/androidstudio.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/androidstudio.css
new file mode 100644
index 0000000..bc8e473
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/androidstudio.css
@@ -0,0 +1,66 @@
+/*
+Date: 24 Fev 2015
+Author: Pedro Oliveira <kanytu@gmail . com>
+*/
+
+.hljs {
+  color: #a9b7c6;
+  background: #282b2e;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+}
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+  color: #6897BB;
+}
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+  color: #cc7832;
+}
+
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+  color: #629755;
+}
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+  color: #808080;
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+
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+  color: #bbb529;
+}
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+  color: #6A8759;
+}
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+  color: #ffc66d;
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diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/arduino-light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/arduino-light.css
new file mode 100644
index 0000000..4b8b7fd
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/arduino-light.css
@@ -0,0 +1,88 @@
+/*
+
+Arduino® Light Theme - Stefania Mellai <s.mellai@arduino.cc>
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #FFFFFF;
+}
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+.hljs-selector-class,
+.hljs-quote,
+.hljs-template-tag,
+.hljs-deletion {
+  color: #005C5F;
+}
+
+.hljs-title,
+.hljs-section {
+  color: #880000;
+  font-weight: bold;
+}
+
+.hljs-comment {
+  color: rgba(149,165,166,.8);
+}
+
+.hljs-meta-keyword {
+  color: #728E00;
+}
+
+.hljs-meta {
+  color: #728E00;
+  color: #434f54;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
+
+.hljs-function {
+  color: #728E00;
+}
+
+.hljs-number {
+  color: #8A7B52;  
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/arta.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/arta.css
index 02db86a..75ef3a9 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/arta.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/arta.css
@@ -3,158 +3,71 @@ Date: 17.V.2011
 Author: pumbur <pumbur@pumbur.net>
 */
 
-.hljs
-{
-  display: block; padding: 0.5em;
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
   background: #222;
 }
 
-.profile .hljs-header *,
-.ini .hljs-title,
-.nginx .hljs-title
-{
+.hljs,
+.hljs-subst {
+  color: #aaa;
+}
+
+.hljs-section {
   color: #fff;
 }
 
 .hljs-comment,
-.hljs-javadoc,
-.hljs-preprocessor,
-.hljs-preprocessor .hljs-title,
-.hljs-pragma,
-.hljs-shebang,
-.profile .hljs-summary,
-.diff,
-.hljs-pi,
-.hljs-doctype,
-.hljs-tag,
-.hljs-template_comment,
-.css .hljs-rules,
-.tex .hljs-special
-{
+.hljs-quote,
+.hljs-meta {
   color: #444;
 }
 
 .hljs-string,
 .hljs-symbol,
-.diff .hljs-change,
-.hljs-regexp,
-.xml .hljs-attribute,
-.smalltalk .hljs-char,
-.xml .hljs-value,
-.ini .hljs-value,
-.clojure .hljs-attribute,
-.coffeescript .hljs-attribute
-{
+.hljs-bullet,
+.hljs-regexp {
   color: #ffcc33;
 }
 
 .hljs-number,
-.hljs-addition
-{
+.hljs-addition {
   color: #00cc66;
 }
 
 .hljs-built_in,
+.hljs-builtin-name,
 .hljs-literal,
-.vhdl .hljs-typename,
-.go .hljs-constant,
-.go .hljs-typename,
-.ini .hljs-keyword,
-.lua .hljs-title,
-.perl .hljs-variable,
-.php .hljs-variable,
-.mel .hljs-variable,
-.django .hljs-variable,
-.css .funtion,
-.smalltalk .method,
-.hljs-hexcolor,
-.hljs-important,
-.hljs-flow,
-.hljs-inheritance,
-.parser3 .hljs-variable
-{
-  color: #32AAEE;
+.hljs-type,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-link {
+  color: #32aaee;
 }
 
 .hljs-keyword,
-.hljs-tag .hljs-title,
-.css .hljs-tag,
-.css .hljs-class,
-.css .hljs-id,
-.css .hljs-pseudo,
-.css .hljs-attr_selector,
-.lisp .hljs-title,
-.clojure .hljs-built_in,
-.hljs-winutils,
-.tex .hljs-command,
-.hljs-request,
-.hljs-status
-{
+.hljs-selector-tag,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
   color: #6644aa;
 }
 
 .hljs-title,
-.ruby .hljs-constant,
-.vala .hljs-constant,
-.hljs-parent,
+.hljs-variable,
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-.hljs-template_tag,
-.css .hljs-keyword,
-.objectivec .hljs-class .hljs-id,
-.smalltalk .hljs-class,
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-.apache .hljs-tag,
-.nginx .hljs-variable,
-.hljs-envvar,
-.bash .hljs-variable,
-.go .hljs-built_in,
-.vbscript .hljs-built_in,
-.lua .hljs-built_in,
-.rsl .hljs-built_in,
-.tail,
-.avrasm .hljs-label,
-.tex .hljs-formula,
-.tex .hljs-formula *
-{
+.hljs-template-tag {
   color: #bb1166;
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-.hljs-yardoctag,
-.hljs-phpdoc,
-.profile .hljs-header,
-.ini .hljs-title,
-.apache .hljs-tag,
-.parser3 .hljs-title
-{
+.hljs-section,
+.hljs-doctag,
+.hljs-strong {
   font-weight: bold;
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-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata
-{
-  opacity: 0.6;
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-
-.hljs,
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-.css,
-.xml,
-.hljs-subst,
-.diff .hljs-chunk,
-.css .hljs-value,
-.css .hljs-attribute,
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-.tail .hljs-params,
-.hljs-container,
-.haskell *,
-.erlang *,
-.erlang_repl *
-{
-  color: #aaa;
+.hljs-emphasis {
+  font-style: italic;
 }
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/ascetic.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/ascetic.css
index 031c88a..48397e8 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/ascetic.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/ascetic.css
@@ -1,50 +1,45 @@
-/*
+/*
 
 Original style from softwaremaniacs.org (c) Ivan Sagalaev <Maniac@SoftwareManiacs.Org>
 
 */
 
 .hljs {
-  display: block; padding: 0.5em;
-  background: white; color: black;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: white;
+  color: black;
 }
 
 .hljs-string,
-.hljs-tag .hljs-value,
-.hljs-filter .hljs-argument,
+.hljs-variable,
+.hljs-template-variable,
+.hljs-symbol,
+.hljs-bullet,
+.hljs-section,
 .hljs-addition,
-.hljs-change,
-.apache .hljs-tag,
-.apache .hljs-cbracket,
-.nginx .hljs-built_in,
-.tex .hljs-formula {
+.hljs-attribute,
+.hljs-link {
   color: #888;
 }
 
 .hljs-comment,
-.hljs-template_comment,
-.hljs-shebang,
-.hljs-doctype,
-.hljs-pi,
-.hljs-javadoc,
-.hljs-deletion,
-.apache .hljs-sqbracket {
-  color: #CCC;
+.hljs-quote,
+.hljs-meta,
+.hljs-deletion {
+  color: #ccc;
 }
 
 .hljs-keyword,
-.hljs-tag .hljs-title,
-.ini .hljs-title,
-.lisp .hljs-title,
-.clojure .hljs-title,
-.http .hljs-title,
-.nginx .hljs-title,
-.css .hljs-tag,
-.hljs-winutils,
-.hljs-flow,
-.apache .hljs-tag,
-.tex .hljs-command,
-.hljs-request,
-.hljs-status {
+.hljs-selector-tag,
+.hljs-section,
+.hljs-name,
+.hljs-type,
+.hljs-strong {
   font-weight: bold;
 }
+
+.hljs-emphasis {
+  font-style: italic;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-cave-dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-cave-dark.css
new file mode 100644
index 0000000..65428f3
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-cave-dark.css
@@ -0,0 +1,83 @@
+/* Base16 Atelier Cave Dark - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/cave) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Cave Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #7e7887;
+}
+
+/* Atelier-Cave Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-regexp,
+.hljs-link,
+.hljs-tag,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #be4678;
+}
+
+/* Atelier-Cave Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #aa573c;
+}
+
+/* Atelier-Cave Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #2a9292;
+}
+
+/* Atelier-Cave Blue */
+.hljs-title,
+.hljs-section {
+  color: #576ddb;
+}
+
+/* Atelier-Cave Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #955ae7;
+}
+
+.hljs-deletion,
+.hljs-addition {
+  color: #19171c;
+  display: inline-block;
+  width: 100%;
+}
+
+.hljs-deletion {
+  background-color: #be4678;
+}
+
+.hljs-addition {
+  background-color: #2a9292;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #19171c;
+  color: #8b8792;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-cave-light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-cave-light.css
new file mode 100644
index 0000000..b419f9f
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-cave-light.css
@@ -0,0 +1,85 @@
+/* Base16 Atelier Cave Light - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/cave) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Cave Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #655f6d;
+}
+
+/* Atelier-Cave Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #be4678;
+}
+
+/* Atelier-Cave Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #aa573c;
+}
+
+/* Atelier-Cave Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #2a9292;
+}
+
+/* Atelier-Cave Blue */
+.hljs-title,
+.hljs-section {
+  color: #576ddb;
+}
+
+/* Atelier-Cave Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #955ae7;
+}
+
+.hljs-deletion,
+.hljs-addition {
+  color: #19171c;
+  display: inline-block;
+  width: 100%;
+}
+
+.hljs-deletion {
+  background-color: #be4678;
+}
+
+.hljs-addition {
+  background-color: #2a9292;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #efecf4;
+  color: #585260;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-dune-dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-dune-dark.css
new file mode 100644
index 0000000..1684f52
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-dune-dark.css
@@ -0,0 +1,69 @@
+/* Base16 Atelier Dune Dark - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/dune) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Dune Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #999580;
+}
+
+/* Atelier-Dune Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #d73737;
+}
+
+/* Atelier-Dune Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #b65611;
+}
+
+/* Atelier-Dune Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #60ac39;
+}
+
+/* Atelier-Dune Blue */
+.hljs-title,
+.hljs-section {
+  color: #6684e1;
+}
+
+/* Atelier-Dune Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #b854d4;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #20201d;
+  color: #a6a28c;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-dune-light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-dune-light.css
new file mode 100644
index 0000000..547719d
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-dune-light.css
@@ -0,0 +1,69 @@
+/* Base16 Atelier Dune Light - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/dune) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Dune Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #7d7a68;
+}
+
+/* Atelier-Dune Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #d73737;
+}
+
+/* Atelier-Dune Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #b65611;
+}
+
+/* Atelier-Dune Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #60ac39;
+}
+
+/* Atelier-Dune Blue */
+.hljs-title,
+.hljs-section {
+  color: #6684e1;
+}
+
+/* Atelier-Dune Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #b854d4;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #fefbec;
+  color: #6e6b5e;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-dune.dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-dune.dark.css
deleted file mode 100644
index 2779601..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-dune.dark.css
+++ /dev/null
@@ -1,93 +0,0 @@
-/* Base16 Atelier Dune Dark - Theme */
-/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/dune) */ 
-/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
-/* https://github.com/jmblog/color-themes-for-highlightjs */
-
-/* Atelier Dune Dark Comment */
-.hljs-comment,
-.hljs-title {
-  color: #999580;
-}
-
-/* Atelier Dune Dark Red */
-.hljs-variable,
-.hljs-attribute,
-.hljs-tag,
-.hljs-regexp,
-.ruby .hljs-constant,
-.xml .hljs-tag .hljs-title,
-.xml .hljs-pi,
-.xml .hljs-doctype,
-.html .hljs-doctype,
-.css .hljs-id,
-.css .hljs-class,
-.css .hljs-pseudo {
-  color: #d73737;
-}
-
-/* Atelier Dune Dark Orange */
-.hljs-number,
-.hljs-preprocessor,
-.hljs-pragma,
-.hljs-built_in,
-.hljs-literal,
-.hljs-params,
-.hljs-constant {
-  color: #b65611;
-}
-
-/* Atelier Dune Dark Yellow */
-.ruby .hljs-class .hljs-title,
-.css .hljs-rules .hljs-attribute {
-  color: #cfb017;
-}
-
-/* Atelier Dune Dark Green */
-.hljs-string,
-.hljs-value,
-.hljs-inheritance,
-.hljs-header,
-.ruby .hljs-symbol,
-.xml .hljs-cdata {
-  color: #60ac39;
-}
-
-/* Atelier Dune Dark Aqua */
-.css .hljs-hexcolor {
-  color: #1fad83;
-}
-
-/* Atelier Dune Dark Blue */
-.hljs-function,
-.python .hljs-decorator,
-.python .hljs-title,
-.ruby .hljs-function .hljs-title,
-.ruby .hljs-title .hljs-keyword,
-.perl .hljs-sub,
-.javascript .hljs-title,
-.coffeescript .hljs-title {
-  color: #6684e1;
-}
-
-/* Atelier Dune Dark Purple */
-.hljs-keyword,
-.javascript .hljs-function {
-  color: #b854d4;
-}
-
-.hljs {
-  display: block;
-  background: #292824;
-  color: #a6a28c;
-  padding: 0.5em;
-}
-
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
-}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-dune.light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-dune.light.css
deleted file mode 100644
index 11c7423..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-dune.light.css
+++ /dev/null
@@ -1,93 +0,0 @@
-/* Base16 Atelier Dune Light - Theme */
-/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/dune) */ 
-/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
-/* https://github.com/jmblog/color-themes-for-highlightjs */
-
-/* Atelier Dune Light Comment */
-.hljs-comment,
-.hljs-title {
-  color: #7d7a68;
-}
-
-/* Atelier Dune Light Red */
-.hljs-variable,
-.hljs-attribute,
-.hljs-tag,
-.hljs-regexp,
-.ruby .hljs-constant,
-.xml .hljs-tag .hljs-title,
-.xml .hljs-pi,
-.xml .hljs-doctype,
-.html .hljs-doctype,
-.css .hljs-id,
-.css .hljs-class,
-.css .hljs-pseudo {
-  color: #d73737;
-}
-
-/* Atelier Dune Light Orange */
-.hljs-number,
-.hljs-preprocessor,
-.hljs-pragma,
-.hljs-built_in,
-.hljs-literal,
-.hljs-params,
-.hljs-constant {
-  color: #b65611;
-}
-
-/* Atelier Dune Light Yellow */
-.hljs-ruby .hljs-class .hljs-title,
-.css .hljs-rules .hljs-attribute {
-  color: #cfb017;
-}
-
-/* Atelier Dune Light Green */
-.hljs-string,
-.hljs-value,
-.hljs-inheritance,
-.hljs-header,
-.ruby .hljs-symbol,
-.xml .hljs-cdata {
-  color: #60ac39;
-}
-
-/* Atelier Dune Light Aqua */
-.css .hljs-hexcolor {
-  color: #1fad83;
-}
-
-/* Atelier Dune Light Blue */
-.hljs-function,
-.python .hljs-decorator,
-.python .hljs-title,
-.ruby .hljs-function .hljs-title,
-.ruby .hljs-title .hljs-keyword,
-.perl .hljs-sub,
-.javascript .hljs-title,
-.coffeescript .hljs-title {
-  color: #6684e1;
-}
-
-/* Atelier Dune Light Purple */
-.hljs-keyword,
-.javascript .hljs-function {
-  color: #b854d4;
-}
-
-.hljs {
-  display: block;
-  background: #fefbec;
-  color: #6e6b5e;
-  padding: 0.5em;
-}
-
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
-}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-estuary-dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-estuary-dark.css
new file mode 100644
index 0000000..a5e5071
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-estuary-dark.css
@@ -0,0 +1,84 @@
+/* Base16 Atelier Estuary Dark - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/estuary) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Estuary Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #878573;
+}
+
+/* Atelier-Estuary Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #ba6236;
+}
+
+/* Atelier-Estuary Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #ae7313;
+}
+
+/* Atelier-Estuary Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #7d9726;
+}
+
+/* Atelier-Estuary Blue */
+.hljs-title,
+.hljs-section {
+  color: #36a166;
+}
+
+/* Atelier-Estuary Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #5f9182;
+}
+
+.hljs-deletion,
+.hljs-addition {
+  color: #22221b;
+  display: inline-block;
+  width: 100%;
+}
+
+.hljs-deletion {
+  background-color: #ba6236;
+}
+
+.hljs-addition {
+  background-color: #7d9726;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #22221b;
+  color: #929181;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-estuary-light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-estuary-light.css
new file mode 100644
index 0000000..1daee5d
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-estuary-light.css
@@ -0,0 +1,84 @@
+/* Base16 Atelier Estuary Light - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/estuary) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Estuary Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #6c6b5a;
+}
+
+/* Atelier-Estuary Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #ba6236;
+}
+
+/* Atelier-Estuary Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #ae7313;
+}
+
+/* Atelier-Estuary Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #7d9726;
+}
+
+/* Atelier-Estuary Blue */
+.hljs-title,
+.hljs-section {
+  color: #36a166;
+}
+
+/* Atelier-Estuary Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #5f9182;
+}
+
+.hljs-deletion,
+.hljs-addition {
+  color: #22221b;
+  display: inline-block;
+  width: 100%;
+}
+
+.hljs-deletion {
+  background-color: #ba6236;
+}
+
+.hljs-addition {
+  background-color: #7d9726;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #f4f3ec;
+  color: #5f5e4e;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-forest-dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-forest-dark.css
new file mode 100644
index 0000000..0ef4fae
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-forest-dark.css
@@ -0,0 +1,69 @@
+/* Base16 Atelier Forest Dark - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/forest) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Forest Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #9c9491;
+}
+
+/* Atelier-Forest Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #f22c40;
+}
+
+/* Atelier-Forest Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #df5320;
+}
+
+/* Atelier-Forest Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #7b9726;
+}
+
+/* Atelier-Forest Blue */
+.hljs-title,
+.hljs-section {
+  color: #407ee7;
+}
+
+/* Atelier-Forest Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #6666ea;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #1b1918;
+  color: #a8a19f;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-forest-light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-forest-light.css
new file mode 100644
index 0000000..bbedde1
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-forest-light.css
@@ -0,0 +1,69 @@
+/* Base16 Atelier Forest Light - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/forest) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Forest Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #766e6b;
+}
+
+/* Atelier-Forest Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #f22c40;
+}
+
+/* Atelier-Forest Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #df5320;
+}
+
+/* Atelier-Forest Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #7b9726;
+}
+
+/* Atelier-Forest Blue */
+.hljs-title,
+.hljs-section {
+  color: #407ee7;
+}
+
+/* Atelier-Forest Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #6666ea;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #f1efee;
+  color: #68615e;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-forest.dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-forest.dark.css
deleted file mode 100644
index c1f7211..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-forest.dark.css
+++ /dev/null
@@ -1,93 +0,0 @@
-/* Base16 Atelier Forest Dark - Theme */
-/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/forest) */ 
-/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
-/* https://github.com/jmblog/color-themes-for-highlightjs */
-
-/* Atelier Forest Dark Comment */
-.hljs-comment,
-.hljs-title {
-  color: #9c9491;
-}
-
-/* Atelier Forest Dark Red */
-.hljs-variable,
-.hljs-attribute,
-.hljs-tag,
-.hljs-regexp,
-.ruby .hljs-constant,
-.xml .hljs-tag .hljs-title,
-.xml .hljs-pi,
-.xml .hljs-doctype,
-.html .hljs-doctype,
-.css .hljs-id,
-.css .hljs-class,
-.css .hljs-pseudo {
-  color: #f22c40;
-}
-
-/* Atelier Forest Dark Orange */
-.hljs-number,
-.hljs-preprocessor,
-.hljs-pragma,
-.hljs-built_in,
-.hljs-literal,
-.hljs-params,
-.hljs-constant {
-  color: #df5320;
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-
-/* Atelier Forest Dark Yellow */
-.hljs-ruby .hljs-class .hljs-title,
-.css .hljs-rules .hljs-attribute {
-  color: #d5911a;
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-
-/* Atelier Forest Dark Green */
-.hljs-string,
-.hljs-value,
-.hljs-inheritance,
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-.ruby .hljs-symbol,
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-  color: #5ab738;
-}
-
-/* Atelier Forest Dark Aqua */
-.css .hljs-hexcolor {
-  color: #00ad9c;
-}
-
-/* Atelier Forest Dark Blue */
-.hljs-function,
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-.python .hljs-title,
-.ruby .hljs-function .hljs-title,
-.ruby .hljs-title .hljs-keyword,
-.perl .hljs-sub,
-.javascript .hljs-title,
-.coffeescript .hljs-title {
-  color: #407ee7;
-}
-
-/* Atelier Forest Dark Purple */
-.hljs-keyword,
-.javascript .hljs-function {
-  color: #6666ea;
-}
-
-.hljs {
-  display: block;
-  background: #2c2421;
-  color: #a8a19f;
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-.coffeescript .javascript,
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-.xml .javascript,
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diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-forest.light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-forest.light.css
deleted file mode 100644
index 806ba73..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-forest.light.css
+++ /dev/null
@@ -1,93 +0,0 @@
-/* Base16 Atelier Forest Light - Theme */
-/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/forest) */ 
-/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
-/* https://github.com/jmblog/color-themes-for-highlightjs */
-
-/* Atelier Forest Light Comment */
-.hljs-comment,
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-  color: #766e6b;
-}
-
-/* Atelier Forest Light Red */
-.hljs-variable,
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-.xml .hljs-doctype,
-.html .hljs-doctype,
-.css .hljs-id,
-.css .hljs-class,
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-  color: #f22c40;
-}
-
-/* Atelier Forest Light Orange */
-.hljs-number,
-.hljs-preprocessor,
-.hljs-pragma,
-.hljs-built_in,
-.hljs-literal,
-.hljs-params,
-.hljs-constant {
-  color: #df5320;
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-
-/* Atelier Forest Light Yellow */
-.hljs-ruby .hljs-class .hljs-title,
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-  color: #d5911a;
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-
-/* Atelier Forest Light Green */
-.hljs-string,
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-  color: #5ab738;
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-
-/* Atelier Forest Light Aqua */
-.css .hljs-hexcolor {
-  color: #00ad9c;
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-
-/* Atelier Forest Light Blue */
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-  color: #407ee7;
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-
-/* Atelier Forest Light Purple */
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-  color: #6666ea;
-}
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-.hljs {
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-  background: #f1efee;
-  color: #68615e;
-  padding: 0.5em;
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-.coffeescript .javascript,
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-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
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diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-heath-dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-heath-dark.css
new file mode 100644
index 0000000..fe01ff7
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-heath-dark.css
@@ -0,0 +1,69 @@
+/* Base16 Atelier Heath Dark - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/heath) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Heath Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #9e8f9e;
+}
+
+/* Atelier-Heath Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #ca402b;
+}
+
+/* Atelier-Heath Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #a65926;
+}
+
+/* Atelier-Heath Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #918b3b;
+}
+
+/* Atelier-Heath Blue */
+.hljs-title,
+.hljs-section {
+  color: #516aec;
+}
+
+/* Atelier-Heath Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #7b59c0;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #1b181b;
+  color: #ab9bab;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-heath-light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-heath-light.css
new file mode 100644
index 0000000..ee43786
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-heath-light.css
@@ -0,0 +1,69 @@
+/* Base16 Atelier Heath Light - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/heath) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Heath Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #776977;
+}
+
+/* Atelier-Heath Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #ca402b;
+}
+
+/* Atelier-Heath Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #a65926;
+}
+
+/* Atelier-Heath Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #918b3b;
+}
+
+/* Atelier-Heath Blue */
+.hljs-title,
+.hljs-section {
+  color: #516aec;
+}
+
+/* Atelier-Heath Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #7b59c0;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #f7f3f7;
+  color: #695d69;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-heath.dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-heath.dark.css
deleted file mode 100644
index 3670669..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-heath.dark.css
+++ /dev/null
@@ -1,93 +0,0 @@
-/* Base16 Atelier Heath Dark - Theme */
-/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/heath) */ 
-/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
-/* https://github.com/jmblog/color-themes-for-highlightjs */
-
-/* Atelier Heath Dark Comment */
-.hljs-comment,
-.hljs-title {
-  color: #9e8f9e;
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-/* Atelier Heath Dark Red */
-.hljs-variable,
-.hljs-attribute,
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-.xml .hljs-doctype,
-.html .hljs-doctype,
-.css .hljs-id,
-.css .hljs-class,
-.css .hljs-pseudo {
-  color: #ca402b;
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-/* Atelier Heath Dark Orange */
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-  color: #a65926;
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-/* Atelier Heath Dark Yellow */
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-  color: #bb8a35;
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-/* Atelier Heath Dark Green */
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-  color: #379a37;
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-/* Atelier Heath Dark Aqua */
-.css .hljs-hexcolor {
-  color: #159393;
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-/* Atelier Heath Dark Blue */
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-  color: #516aec;
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-/* Atelier Heath Dark Purple */
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-  color: #7b59c0;
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diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-heath.light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-heath.light.css
deleted file mode 100644
index e73a0b8..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-heath.light.css
+++ /dev/null
@@ -1,93 +0,0 @@
-/* Base16 Atelier Heath Light - Theme */
-/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/heath) */ 
-/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
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-/* Atelier Heath Light Comment */
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-/* Atelier Heath Light Red */
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diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-lakeside-dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-lakeside-dark.css
new file mode 100644
index 0000000..a937d3b
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-lakeside-dark.css
@@ -0,0 +1,69 @@
+/* Base16 Atelier Lakeside Dark - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/lakeside) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Lakeside Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #7195a8;
+}
+
+/* Atelier-Lakeside Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #d22d72;
+}
+
+/* Atelier-Lakeside Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #935c25;
+}
+
+/* Atelier-Lakeside Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #568c3b;
+}
+
+/* Atelier-Lakeside Blue */
+.hljs-title,
+.hljs-section {
+  color: #257fad;
+}
+
+/* Atelier-Lakeside Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #6b6bb8;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #161b1d;
+  color: #7ea2b4;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-lakeside-light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-lakeside-light.css
new file mode 100644
index 0000000..6c7e8f9
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-lakeside-light.css
@@ -0,0 +1,69 @@
+/* Base16 Atelier Lakeside Light - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/lakeside) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Lakeside Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #5a7b8c;
+}
+
+/* Atelier-Lakeside Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #d22d72;
+}
+
+/* Atelier-Lakeside Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #935c25;
+}
+
+/* Atelier-Lakeside Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #568c3b;
+}
+
+/* Atelier-Lakeside Blue */
+.hljs-title,
+.hljs-section {
+  color: #257fad;
+}
+
+/* Atelier-Lakeside Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #6b6bb8;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #ebf8ff;
+  color: #516d7b;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-lakeside.dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-lakeside.dark.css
deleted file mode 100644
index 8506246..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-lakeside.dark.css
+++ /dev/null
@@ -1,93 +0,0 @@
-/* Base16 Atelier Lakeside Dark - Theme */
-/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/lakeside/) */ 
-/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
-/* https://github.com/jmblog/color-themes-for-highlightjs */
-
-/* Atelier Lakeside Dark Comment */
-.hljs-comment,
-.hljs-title {
-  color: #7195a8;
-}
-
-/* Atelier Lakeside Dark Red */
-.hljs-variable,
-.hljs-attribute,
-.hljs-tag,
-.hljs-regexp,
-.ruby .hljs-constant,
-.xml .hljs-tag .hljs-title,
-.xml .hljs-pi,
-.xml .hljs-doctype,
-.html .hljs-doctype,
-.css .hljs-id,
-.css .hljs-class,
-.css .hljs-pseudo {
-  color: #d22d72;
-}
-
-/* Atelier Lakeside Dark Orange */
-.hljs-number,
-.hljs-preprocessor,
-.hljs-pragma,
-.hljs-built_in,
-.hljs-literal,
-.hljs-params,
-.hljs-constant {
-  color: #935c25;
-}
-
-/* Atelier Lakeside Dark Yellow */
-.hljs-ruby .hljs-class .hljs-title,
-.css .hljs-rules .hljs-attribute {
-  color: #8a8a0f;
-}
-
-/* Atelier Lakeside Dark Green */
-.hljs-string,
-.hljs-value,
-.hljs-inheritance,
-.hljs-header,
-.ruby .hljs-symbol,
-.xml .hljs-cdata {
-  color: #568c3b;
-}
-
-/* Atelier Lakeside Dark Aqua */
-.css .hljs-hexcolor {
-  color: #2d8f6f;
-}
-
-/* Atelier Lakeside Dark Blue */
-.hljs-function,
-.python .hljs-decorator,
-.python .hljs-title,
-.ruby .hljs-function .hljs-title,
-.ruby .hljs-title .hljs-keyword,
-.perl .hljs-sub,
-.javascript .hljs-title,
-.coffeescript .hljs-title {
-  color: #257fad;
-}
-
-/* Atelier Lakeside Dark Purple */
-.hljs-keyword,
-.javascript .hljs-function {
-  color: #5d5db1;
-}
-
-.hljs {
-  display: block;
-  background: #1f292e;
-  color: #7ea2b4;
-  padding: 0.5em;
-}
-
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
-}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-lakeside.light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-lakeside.light.css
deleted file mode 100644
index 006ae6d..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-lakeside.light.css
+++ /dev/null
@@ -1,93 +0,0 @@
-/* Base16 Atelier Lakeside Light - Theme */
-/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/lakeside/) */ 
-/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
-/* https://github.com/jmblog/color-themes-for-highlightjs */
-
-/* Atelier Lakeside Light Comment */
-.hljs-comment,
-.hljs-title {
-  color: #5a7b8c;
-}
-
-/* Atelier Lakeside Light Red */
-.hljs-variable,
-.hljs-attribute,
-.hljs-tag,
-.hljs-regexp,
-.ruby .hljs-constant,
-.xml .hljs-tag .hljs-title,
-.xml .hljs-pi,
-.xml .hljs-doctype,
-.html .hljs-doctype,
-.css .hljs-id,
-.css .hljs-class,
-.css .hljs-pseudo {
-  color: #d22d72;
-}
-
-/* Atelier Lakeside Light Orange */
-.hljs-number,
-.hljs-preprocessor,
-.hljs-pragma,
-.hljs-built_in,
-.hljs-literal,
-.hljs-params,
-.hljs-constant {
-  color: #935c25;
-}
-
-/* Atelier Lakeside Light Yellow */
-.hljs-ruby .hljs-class .hljs-title,
-.css .hljs-rules .hljs-attribute {
-  color: #8a8a0f;
-}
-
-/* Atelier Lakeside Light Green */
-.hljs-string,
-.hljs-value,
-.hljs-inheritance,
-.hljs-header,
-.ruby .hljs-symbol,
-.xml .hljs-cdata {
-  color: #568c3b;
-}
-
-/* Atelier Lakeside Light Aqua */
-.css .hljs-hexcolor {
-  color: #2d8f6f;
-}
-
-/* Atelier Lakeside Light Blue */
-.hljs-function,
-.python .hljs-decorator,
-.python .hljs-title,
-.ruby .hljs-function .hljs-title,
-.ruby .hljs-title .hljs-keyword,
-.perl .hljs-sub,
-.javascript .hljs-title,
-.coffeescript .hljs-title {
-  color: #257fad;
-}
-
-/* Atelier Lakeside Light Purple */
-.hljs-keyword,
-.javascript .hljs-function {
-  color: #5d5db1;
-}
-
-.hljs {
-  display: block;
-  background: #ebf8ff;
-  color: #516d7b;
-  padding: 0.5em;
-}
-
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
-}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-plateau-dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-plateau-dark.css
new file mode 100644
index 0000000..3bb0526
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-plateau-dark.css
@@ -0,0 +1,84 @@
+/* Base16 Atelier Plateau Dark - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/plateau) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Plateau Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #7e7777;
+}
+
+/* Atelier-Plateau Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #ca4949;
+}
+
+/* Atelier-Plateau Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #b45a3c;
+}
+
+/* Atelier-Plateau Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #4b8b8b;
+}
+
+/* Atelier-Plateau Blue */
+.hljs-title,
+.hljs-section {
+  color: #7272ca;
+}
+
+/* Atelier-Plateau Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #8464c4;
+}
+
+.hljs-deletion,
+.hljs-addition {
+  color: #1b1818;
+  display: inline-block;
+  width: 100%;
+}
+
+.hljs-deletion {
+  background-color: #ca4949;
+}
+
+.hljs-addition {
+  background-color: #4b8b8b;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #1b1818;
+  color: #8a8585;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-plateau-light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-plateau-light.css
new file mode 100644
index 0000000..5f0222b
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-plateau-light.css
@@ -0,0 +1,84 @@
+/* Base16 Atelier Plateau Light - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/plateau) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Plateau Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #655d5d;
+}
+
+/* Atelier-Plateau Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #ca4949;
+}
+
+/* Atelier-Plateau Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #b45a3c;
+}
+
+/* Atelier-Plateau Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #4b8b8b;
+}
+
+/* Atelier-Plateau Blue */
+.hljs-title,
+.hljs-section {
+  color: #7272ca;
+}
+
+/* Atelier-Plateau Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #8464c4;
+}
+
+.hljs-deletion,
+.hljs-addition {
+  color: #1b1818;
+  display: inline-block;
+  width: 100%;
+}
+
+.hljs-deletion {
+  background-color: #ca4949;
+}
+
+.hljs-addition {
+  background-color: #4b8b8b;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #f4ecec;
+  color: #585050;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-savanna-dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-savanna-dark.css
new file mode 100644
index 0000000..38f8314
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-savanna-dark.css
@@ -0,0 +1,84 @@
+/* Base16 Atelier Savanna Dark - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/savanna) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Savanna Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #78877d;
+}
+
+/* Atelier-Savanna Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #b16139;
+}
+
+/* Atelier-Savanna Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #9f713c;
+}
+
+/* Atelier-Savanna Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #489963;
+}
+
+/* Atelier-Savanna Blue */
+.hljs-title,
+.hljs-section {
+  color: #478c90;
+}
+
+/* Atelier-Savanna Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #55859b;
+}
+
+.hljs-deletion,
+.hljs-addition {
+  color: #171c19;
+  display: inline-block;
+  width: 100%;
+}
+
+.hljs-deletion {
+  background-color: #b16139;
+}
+
+.hljs-addition {
+  background-color: #489963;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #171c19;
+  color: #87928a;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-savanna-light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-savanna-light.css
new file mode 100644
index 0000000..1ccd7c6
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-savanna-light.css
@@ -0,0 +1,84 @@
+/* Base16 Atelier Savanna Light - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/savanna) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Savanna Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #5f6d64;
+}
+
+/* Atelier-Savanna Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #b16139;
+}
+
+/* Atelier-Savanna Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #9f713c;
+}
+
+/* Atelier-Savanna Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #489963;
+}
+
+/* Atelier-Savanna Blue */
+.hljs-title,
+.hljs-section {
+  color: #478c90;
+}
+
+/* Atelier-Savanna Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #55859b;
+}
+
+.hljs-deletion,
+.hljs-addition {
+  color: #171c19;
+  display: inline-block;
+  width: 100%;
+}
+
+.hljs-deletion {
+  background-color: #b16139;
+}
+
+.hljs-addition {
+  background-color: #489963;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #ecf4ee;
+  color: #526057;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-seaside-dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-seaside-dark.css
new file mode 100644
index 0000000..df29949
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-seaside-dark.css
@@ -0,0 +1,69 @@
+/* Base16 Atelier Seaside Dark - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/seaside) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Seaside Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #809980;
+}
+
+/* Atelier-Seaside Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #e6193c;
+}
+
+/* Atelier-Seaside Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #87711d;
+}
+
+/* Atelier-Seaside Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #29a329;
+}
+
+/* Atelier-Seaside Blue */
+.hljs-title,
+.hljs-section {
+  color: #3d62f5;
+}
+
+/* Atelier-Seaside Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #ad2bee;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #131513;
+  color: #8ca68c;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-seaside-light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-seaside-light.css
new file mode 100644
index 0000000..9d960f2
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-seaside-light.css
@@ -0,0 +1,69 @@
+/* Base16 Atelier Seaside Light - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/seaside) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Seaside Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #687d68;
+}
+
+/* Atelier-Seaside Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #e6193c;
+}
+
+/* Atelier-Seaside Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #87711d;
+}
+
+/* Atelier-Seaside Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #29a329;
+}
+
+/* Atelier-Seaside Blue */
+.hljs-title,
+.hljs-section {
+  color: #3d62f5;
+}
+
+/* Atelier-Seaside Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #ad2bee;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #f4fbf4;
+  color: #5e6e5e;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-seaside.dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-seaside.dark.css
deleted file mode 100644
index cbea6ed..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-seaside.dark.css
+++ /dev/null
@@ -1,93 +0,0 @@
-/* Base16 Atelier Seaside Dark - Theme */
-/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/seaside/) */ 
-/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
-/* https://github.com/jmblog/color-themes-for-highlightjs */
-
-/* Atelier Seaside Dark Comment */
-.hljs-comment,
-.hljs-title {
-  color: #809980;
-}
-
-/* Atelier Seaside Dark Red */
-.hljs-variable,
-.hljs-attribute,
-.hljs-tag,
-.hljs-regexp,
-.ruby .hljs-constant,
-.xml .hljs-tag .hljs-title,
-.xml .hljs-pi,
-.xml .hljs-doctype,
-.html .hljs-doctype,
-.css .hljs-id,
-.css .hljs-class,
-.css .hljs-pseudo {
-  color: #e6193c;
-}
-
-/* Atelier Seaside Dark Orange */
-.hljs-number,
-.hljs-preprocessor,
-.hljs-pragma,
-.hljs-built_in,
-.hljs-literal,
-.hljs-params,
-.hljs-constant {
-  color: #87711d;
-}
-
-/* Atelier Seaside Dark Yellow */
-.hljs-ruby .hljs-class .hljs-title,
-.css .hljs-rules .hljs-attribute {
-  color: #c3c322;
-}
-
-/* Atelier Seaside Dark Green */
-.hljs-string,
-.hljs-value,
-.hljs-inheritance,
-.hljs-header,
-.ruby .hljs-symbol,
-.xml .hljs-cdata {
-  color: #29a329;
-}
-
-/* Atelier Seaside Dark Aqua */
-.css .hljs-hexcolor {
-  color: #1999b3;
-}
-
-/* Atelier Seaside Dark Blue */
-.hljs-function,
-.python .hljs-decorator,
-.python .hljs-title,
-.ruby .hljs-function .hljs-title,
-.ruby .hljs-title .hljs-keyword,
-.perl .hljs-sub,
-.javascript .hljs-title,
-.coffeescript .hljs-title {
-  color: #3d62f5;
-}
-
-/* Atelier Seaside Dark Purple */
-.hljs-keyword,
-.javascript .hljs-function {
-  color: #ad2bee;
-}
-
-.hljs {
-  display: block;
-  background: #242924;
-  color: #8ca68c;
-  padding: 0.5em;
-}
-
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
-}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-seaside.light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-seaside.light.css
deleted file mode 100644
index 159121e..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-seaside.light.css
+++ /dev/null
@@ -1,93 +0,0 @@
-/* Base16 Atelier Seaside Light - Theme */
-/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/seaside/) */ 
-/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
-/* https://github.com/jmblog/color-themes-for-highlightjs */
-
-/* Atelier Seaside Light Comment */
-.hljs-comment,
-.hljs-title {
-  color: #687d68;
-}
-
-/* Atelier Seaside Light Red */
-.hljs-variable,
-.hljs-attribute,
-.hljs-tag,
-.hljs-regexp,
-.ruby .hljs-constant,
-.xml .hljs-tag .hljs-title,
-.xml .hljs-pi,
-.xml .hljs-doctype,
-.html .hljs-doctype,
-.css .hljs-id,
-.css .hljs-class,
-.css .hljs-pseudo {
-  color: #e6193c;
-}
-
-/* Atelier Seaside Light Orange */
-.hljs-number,
-.hljs-preprocessor,
-.hljs-pragma,
-.hljs-built_in,
-.hljs-literal,
-.hljs-params,
-.hljs-constant {
-  color: #87711d;
-}
-
-/* Atelier Seaside Light Yellow */
-.hljs-ruby .hljs-class .hljs-title,
-.css .hljs-rules .hljs-attribute {
-  color: #c3c322;
-}
-
-/* Atelier Seaside Light Green */
-.hljs-string,
-.hljs-value,
-.hljs-inheritance,
-.hljs-header,
-.ruby .hljs-symbol,
-.xml .hljs-cdata {
-  color: #29a329;
-}
-
-/* Atelier Seaside Light Aqua */
-.css .hljs-hexcolor {
-  color: #1999b3;
-}
-
-/* Atelier Seaside Light Blue */
-.hljs-function,
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-.python .hljs-title,
-.ruby .hljs-function .hljs-title,
-.ruby .hljs-title .hljs-keyword,
-.perl .hljs-sub,
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-.coffeescript .hljs-title {
-  color: #3d62f5;
-}
-
-/* Atelier Seaside Light Purple */
-.hljs-keyword,
-.javascript .hljs-function {
-  color: #ad2bee;
-}
-
-.hljs {
-  display: block;
-  background: #f0fff0;
-  color: #5e6e5e;
-  padding: 0.5em;
-}
-
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-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
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diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-sulphurpool-dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-sulphurpool-dark.css
new file mode 100644
index 0000000..c2ab793
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-sulphurpool-dark.css
@@ -0,0 +1,69 @@
+/* Base16 Atelier Sulphurpool Dark - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/sulphurpool) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Sulphurpool Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #898ea4;
+}
+
+/* Atelier-Sulphurpool Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #c94922;
+}
+
+/* Atelier-Sulphurpool Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #c76b29;
+}
+
+/* Atelier-Sulphurpool Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #ac9739;
+}
+
+/* Atelier-Sulphurpool Blue */
+.hljs-title,
+.hljs-section {
+  color: #3d8fd1;
+}
+
+/* Atelier-Sulphurpool Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #6679cc;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #202746;
+  color: #979db4;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-sulphurpool-light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-sulphurpool-light.css
new file mode 100644
index 0000000..96c47d0
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atelier-sulphurpool-light.css
@@ -0,0 +1,69 @@
+/* Base16 Atelier Sulphurpool Light - Theme */
+/* by Bram de Haan (http://atelierbram.github.io/syntax-highlighting/atelier-schemes/sulphurpool) */
+/* Original Base16 color scheme by Chris Kempson (https://github.com/chriskempson/base16) */
+
+/* Atelier-Sulphurpool Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #6b7394;
+}
+
+/* Atelier-Sulphurpool Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-regexp,
+.hljs-link,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #c94922;
+}
+
+/* Atelier-Sulphurpool Orange */
+.hljs-number,
+.hljs-meta,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #c76b29;
+}
+
+/* Atelier-Sulphurpool Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet {
+  color: #ac9739;
+}
+
+/* Atelier-Sulphurpool Blue */
+.hljs-title,
+.hljs-section {
+  color: #3d8fd1;
+}
+
+/* Atelier-Sulphurpool Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #6679cc;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #f5f7ff;
+  color: #5e6687;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atom-one-dark-reasonable.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atom-one-dark-reasonable.css
new file mode 100644
index 0000000..fd41c99
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atom-one-dark-reasonable.css
@@ -0,0 +1,77 @@
+/*
+
+Atom One Dark With support for ReasonML by Gidi Morris, based off work by Daniel Gamage
+
+Original One Dark Syntax theme from https://github.com/atom/one-dark-syntax
+
+*/
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  line-height: 1.3em;
+  color: #abb2bf;
+  background: #282c34;
+  border-radius: 5px;
+}
+.hljs-keyword, .hljs-operator {
+  color: #F92672;
+}
+.hljs-pattern-match {
+  color: #F92672;
+}
+.hljs-pattern-match .hljs-constructor {
+  color: #61aeee;
+}
+.hljs-function {
+  color: #61aeee;
+}
+.hljs-function .hljs-params {
+  color: #A6E22E;
+}
+.hljs-function .hljs-params .hljs-typing {
+  color: #FD971F;
+}
+.hljs-module-access .hljs-module {
+  color: #7e57c2;
+}
+.hljs-constructor {
+  color: #e2b93d;
+}
+.hljs-constructor .hljs-string {
+  color: #9CCC65;
+}
+.hljs-comment, .hljs-quote {
+  color: #b18eb1;
+  font-style: italic;
+}
+.hljs-doctag, .hljs-formula {
+  color: #c678dd;
+}
+.hljs-section, .hljs-name, .hljs-selector-tag, .hljs-deletion, .hljs-subst {
+  color: #e06c75;
+}
+.hljs-literal {
+  color: #56b6c2;
+}
+.hljs-string, .hljs-regexp, .hljs-addition, .hljs-attribute, .hljs-meta-string {
+  color: #98c379;
+}
+.hljs-built_in, .hljs-class .hljs-title {
+  color: #e6c07b;
+}
+.hljs-attr, .hljs-variable, .hljs-template-variable, .hljs-type, .hljs-selector-class, .hljs-selector-attr, .hljs-selector-pseudo, .hljs-number {
+  color: #d19a66;
+}
+.hljs-symbol, .hljs-bullet, .hljs-link, .hljs-meta, .hljs-selector-id, .hljs-title {
+  color: #61aeee;
+}
+.hljs-emphasis {
+  font-style: italic;
+}
+.hljs-strong {
+  font-weight: bold;
+}
+.hljs-link {
+  text-decoration: underline;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atom-one-dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atom-one-dark.css
new file mode 100644
index 0000000..1616aaf
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atom-one-dark.css
@@ -0,0 +1,96 @@
+/*
+
+Atom One Dark by Daniel Gamage
+Original One Dark Syntax theme from https://github.com/atom/one-dark-syntax
+
+base:    #282c34
+mono-1:  #abb2bf
+mono-2:  #818896
+mono-3:  #5c6370
+hue-1:   #56b6c2
+hue-2:   #61aeee
+hue-3:   #c678dd
+hue-4:   #98c379
+hue-5:   #e06c75
+hue-5-2: #be5046
+hue-6:   #d19a66
+hue-6-2: #e6c07b
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  color: #abb2bf;
+  background: #282c34;
+}
+
+.hljs-comment,
+.hljs-quote {
+  color: #5c6370;
+  font-style: italic;
+}
+
+.hljs-doctag,
+.hljs-keyword,
+.hljs-formula {
+  color: #c678dd;
+}
+
+.hljs-section,
+.hljs-name,
+.hljs-selector-tag,
+.hljs-deletion,
+.hljs-subst {
+  color: #e06c75;
+}
+
+.hljs-literal {
+  color: #56b6c2;
+}
+
+.hljs-string,
+.hljs-regexp,
+.hljs-addition,
+.hljs-attribute,
+.hljs-meta-string {
+  color: #98c379;
+}
+
+.hljs-built_in,
+.hljs-class .hljs-title {
+  color: #e6c07b;
+}
+
+.hljs-attr,
+.hljs-variable,
+.hljs-template-variable,
+.hljs-type,
+.hljs-selector-class,
+.hljs-selector-attr,
+.hljs-selector-pseudo,
+.hljs-number {
+  color: #d19a66;
+}
+
+.hljs-symbol,
+.hljs-bullet,
+.hljs-link,
+.hljs-meta,
+.hljs-selector-id,
+.hljs-title {
+  color: #61aeee;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
+
+.hljs-link {
+  text-decoration: underline;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atom-one-light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atom-one-light.css
new file mode 100644
index 0000000..d5bd1d2
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/atom-one-light.css
@@ -0,0 +1,96 @@
+/*
+
+Atom One Light by Daniel Gamage
+Original One Light Syntax theme from https://github.com/atom/one-light-syntax
+
+base:    #fafafa
+mono-1:  #383a42
+mono-2:  #686b77
+mono-3:  #a0a1a7
+hue-1:   #0184bb
+hue-2:   #4078f2
+hue-3:   #a626a4
+hue-4:   #50a14f
+hue-5:   #e45649
+hue-5-2: #c91243
+hue-6:   #986801
+hue-6-2: #c18401
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  color: #383a42;
+  background: #fafafa;
+}
+
+.hljs-comment,
+.hljs-quote {
+  color: #a0a1a7;
+  font-style: italic;
+}
+
+.hljs-doctag,
+.hljs-keyword,
+.hljs-formula {
+  color: #a626a4;
+}
+
+.hljs-section,
+.hljs-name,
+.hljs-selector-tag,
+.hljs-deletion,
+.hljs-subst {
+  color: #e45649;
+}
+
+.hljs-literal {
+  color: #0184bb;
+}
+
+.hljs-string,
+.hljs-regexp,
+.hljs-addition,
+.hljs-attribute,
+.hljs-meta-string {
+  color: #50a14f;
+}
+
+.hljs-built_in,
+.hljs-class .hljs-title {
+  color: #c18401;
+}
+
+.hljs-attr,
+.hljs-variable,
+.hljs-template-variable,
+.hljs-type,
+.hljs-selector-class,
+.hljs-selector-attr,
+.hljs-selector-pseudo,
+.hljs-number {
+  color: #986801;
+}
+
+.hljs-symbol,
+.hljs-bullet,
+.hljs-link,
+.hljs-meta,
+.hljs-selector-id,
+.hljs-title {
+  color: #4078f2;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
+
+.hljs-link {
+  text-decoration: underline;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/brown-paper.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/brown-paper.css
new file mode 100644
index 0000000..f0197b9
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/brown-paper.css
@@ -0,0 +1,64 @@
+/*
+
+Brown Paper style from goldblog.com.ua (c) Zaripov Yura <yur4ik7@ukr.net>
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background:#b7a68e url(./brown-papersq.png);
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-literal {
+  color:#005599;
+  font-weight:bold;
+}
+
+.hljs,
+.hljs-subst {
+  color: #363c69;
+}
+
+.hljs-string,
+.hljs-title,
+.hljs-section,
+.hljs-type,
+.hljs-attribute,
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+.hljs-bullet,
+.hljs-built_in,
+.hljs-addition,
+.hljs-variable,
+.hljs-template-tag,
+.hljs-template-variable,
+.hljs-link,
+.hljs-name {
+  color: #2c009f;
+}
+
+.hljs-comment,
+.hljs-quote,
+.hljs-meta,
+.hljs-deletion {
+  color: #802022;
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-literal,
+.hljs-doctag,
+.hljs-title,
+.hljs-section,
+.hljs-type,
+.hljs-name,
+.hljs-strong {
+  font-weight: bold;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/brown_papersq.png b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/brown-papersq.png
similarity index 100%
rename from plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/brown_papersq.png
rename to plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/brown-papersq.png
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/brown_paper.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/brown_paper.css
deleted file mode 100644
index f9541c3..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/brown_paper.css
+++ /dev/null
@@ -1,105 +0,0 @@
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-
-Brown Paper style from goldblog.com.ua (c) Zaripov Yura <yur4ik7@ukr.net>
-
-*/
-
-.hljs {
-  display: block; padding: 0.5em;
-  background:#b7a68e url(./brown_papersq.png);
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-  color:#005599;
-  font-weight:bold;
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-
-.hljs-string,
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-.xml .javascript,
-.xml .vbscript,
-.xml .css,
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-  opacity: 0.8;
-}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/codepen-embed.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/codepen-embed.css
new file mode 100644
index 0000000..195c4a0
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/codepen-embed.css
@@ -0,0 +1,60 @@
+/*
+  codepen.io Embed Theme
+  Author: Justin Perry <http://github.com/ourmaninamsterdam>
+  Original theme - https://github.com/chriskempson/tomorrow-theme
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #222;
+  color: #fff;
+}
+
+.hljs-comment,
+.hljs-quote {
+  color: #777;
+}
+
+.hljs-variable,
+.hljs-template-variable,
+.hljs-tag,
+.hljs-regexp,
+.hljs-meta,
+.hljs-number,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-params,
+.hljs-symbol,
+.hljs-bullet,
+.hljs-link,
+.hljs-deletion {
+  color: #ab875d;
+}
+
+.hljs-section,
+.hljs-title,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-type,
+.hljs-attribute {
+  color: #9b869b;
+}
+
+.hljs-string,
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-addition {
+  color: #8f9c6c;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/color-brewer.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/color-brewer.css
new file mode 100644
index 0000000..7934d98
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/color-brewer.css
@@ -0,0 +1,71 @@
+/*
+
+Colorbrewer theme
+Original: https://github.com/mbostock/colorbrewer-theme (c) Mike Bostock <mike@ocks.org>
+Ported by Fabrício Tavares de Oliveira
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #fff;
+}
+
+.hljs,
+.hljs-subst {
+  color: #000;
+}
+
+.hljs-string,
+.hljs-meta,
+.hljs-symbol,
+.hljs-template-tag,
+.hljs-template-variable,
+.hljs-addition {
+  color: #756bb1;
+}
+
+.hljs-comment,
+.hljs-quote {
+  color: #636363;
+}
+
+.hljs-number,
+.hljs-regexp,
+.hljs-literal,
+.hljs-bullet,
+.hljs-link {
+  color: #31a354;
+}
+
+.hljs-deletion,
+.hljs-variable {
+  color: #88f;
+}
+
+
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-title,
+.hljs-section,
+.hljs-built_in,
+.hljs-doctag,
+.hljs-type,
+.hljs-tag,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-strong {
+  color: #3182bd;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-attribute {
+  color: #e6550d;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/darcula.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/darcula.css
new file mode 100644
index 0000000..be182d0
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/darcula.css
@@ -0,0 +1,77 @@
+/*
+
+Darcula color scheme from the JetBrains family of IDEs
+
+*/
+
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #2b2b2b;
+}
+
+.hljs {
+  color: #bababa;
+}
+
+.hljs-strong,
+.hljs-emphasis {
+  color: #a8a8a2;
+}
+
+.hljs-bullet,
+.hljs-quote,
+.hljs-link,
+.hljs-number,
+.hljs-regexp,
+.hljs-literal {
+  color: #6896ba;
+}
+
+.hljs-code,
+.hljs-selector-class {
+  color: #a6e22e;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-section,
+.hljs-attribute,
+.hljs-name,
+.hljs-variable {
+  color: #cb7832;
+}
+
+.hljs-params {
+  color: #b9b9b9;
+}
+
+.hljs-string {
+  color: #6a8759;
+}
+
+.hljs-subst,
+.hljs-type,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-symbol,
+.hljs-selector-id,
+.hljs-selector-attr,
+.hljs-selector-pseudo,
+.hljs-template-tag,
+.hljs-template-variable,
+.hljs-addition {
+  color: #e0c46c;
+}
+
+.hljs-comment,
+.hljs-deletion,
+.hljs-meta {
+  color: #7f7f7f;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/dark.css
index e479d0a..b4724f5 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/dark.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/dark.css
@@ -1,105 +1,63 @@
-/*
+/*
 
 Dark style from softwaremaniacs.org (c) Ivan Sagalaev <Maniac@SoftwareManiacs.Org>
 
 */
 
 .hljs {
-  display: block; padding: 0.5em;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
   background: #444;
 }
 
 .hljs-keyword,
+.hljs-selector-tag,
 .hljs-literal,
-.hljs-change,
-.hljs-winutils,
-.hljs-flow,
-.lisp .hljs-title,
-.clojure .hljs-built_in,
-.nginx .hljs-title,
-.tex .hljs-special {
+.hljs-section,
+.hljs-link {
   color: white;
 }
 
 .hljs,
 .hljs-subst {
-  color: #DDD;
+  color: #ddd;
 }
 
 .hljs-string,
 .hljs-title,
-.haskell .hljs-type,
-.ini .hljs-title,
-.hljs-tag .hljs-value,
-.css .hljs-rules .hljs-value,
-.hljs-preprocessor,
-.hljs-pragma,
-.ruby .hljs-symbol,
-.ruby .hljs-symbol .hljs-string,
-.ruby .hljs-class .hljs-parent,
+.hljs-name,
+.hljs-type,
+.hljs-attribute,
+.hljs-symbol,
+.hljs-bullet,
 .hljs-built_in,
-.sql .hljs-aggregate,
-.django .hljs-template_tag,
-.django .hljs-variable,
-.smalltalk .hljs-class,
-.hljs-javadoc,
-.ruby .hljs-string,
-.django .hljs-filter .hljs-argument,
-.smalltalk .hljs-localvars,
-.smalltalk .hljs-array,
-.hljs-attr_selector,
-.hljs-pseudo,
 .hljs-addition,
-.hljs-stream,
-.hljs-envvar,
-.apache .hljs-tag,
-.apache .hljs-cbracket,
-.tex .hljs-command,
-.hljs-prompt,
-.coffeescript .hljs-attribute {
-  color: #D88;
+.hljs-variable,
+.hljs-template-tag,
+.hljs-template-variable {
+  color: #d88;
 }
 
 .hljs-comment,
-.java .hljs-annotation,
-.python .hljs-decorator,
-.hljs-template_comment,
-.hljs-pi,
-.hljs-doctype,
+.hljs-quote,
 .hljs-deletion,
-.hljs-shebang,
-.apache .hljs-sqbracket,
-.tex .hljs-formula {
+.hljs-meta {
   color: #777;
 }
 
 .hljs-keyword,
+.hljs-selector-tag,
 .hljs-literal,
 .hljs-title,
-.css .hljs-id,
-.hljs-phpdoc,
-.haskell .hljs-type,
-.vbscript .hljs-built_in,
-.sql .hljs-aggregate,
-.rsl .hljs-built_in,
-.smalltalk .hljs-class,
-.diff .hljs-header,
-.hljs-chunk,
-.hljs-winutils,
-.bash .hljs-variable,
-.apache .hljs-tag,
-.tex .hljs-special,
-.hljs-request,
-.hljs-status {
+.hljs-section,
+.hljs-doctag,
+.hljs-type,
+.hljs-name,
+.hljs-strong {
   font-weight: bold;
 }
 
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
+.hljs-emphasis {
+  font-style: italic;
 }
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/darkula.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/darkula.css
new file mode 100644
index 0000000..f4646c3
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/darkula.css
@@ -0,0 +1,6 @@
+/*
+  Deprecated due to a typo in the name and left here for compatibility purpose only.
+  Please use darcula.css instead.
+*/
+
+@import url('darcula.css');
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/default.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/default.css
index 3d8485b..f1bfade 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/default.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/default.css
@@ -1,153 +1,99 @@
 /*
 
-Original style from softwaremaniacs.org (c) Ivan Sagalaev <Maniac@SoftwareManiacs.Org>
+Original highlight.js style (c) Ivan Sagalaev <maniac@softwaremaniacs.org>
 
 */
 
 .hljs {
-  display: block; padding: 0.5em;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
   background: #F0F0F0;
 }
 
+
+/* Base color: saturation 0; */
+
 .hljs,
-.hljs-subst,
-.hljs-tag .hljs-title,
-.lisp .hljs-title,
-.clojure .hljs-built_in,
-.nginx .hljs-title {
-  color: black;
+.hljs-subst {
+  color: #444;
 }
 
-.hljs-string,
-.hljs-title,
-.hljs-constant,
-.hljs-parent,
-.hljs-tag .hljs-value,
-.hljs-rules .hljs-value,
-.hljs-rules .hljs-value .hljs-number,
-.hljs-preprocessor,
-.hljs-pragma,
-.haml .hljs-symbol,
-.ruby .hljs-symbol,
-.ruby .hljs-symbol .hljs-string,
-.hljs-aggregate,
-.hljs-template_tag,
-.django .hljs-variable,
-.smalltalk .hljs-class,
-.hljs-addition,
-.hljs-flow,
-.hljs-stream,
-.bash .hljs-variable,
-.apache .hljs-tag,
-.apache .hljs-cbracket,
-.tex .hljs-command,
-.tex .hljs-special,
-.erlang_repl .hljs-function_or_atom,
-.asciidoc .hljs-header,
-.markdown .hljs-header,
-.coffeescript .hljs-attribute {
-  color: #800;
-}
-
-.smartquote,
-.hljs-comment,
-.hljs-annotation,
-.hljs-template_comment,
-.diff .hljs-header,
-.hljs-chunk,
-.asciidoc .hljs-blockquote,
-.markdown .hljs-blockquote {
-  color: #888;
-}
-
-.hljs-number,
-.hljs-date,
-.hljs-regexp,
-.hljs-literal,
-.hljs-hexcolor,
-.smalltalk .hljs-symbol,
-.smalltalk .hljs-char,
-.go .hljs-constant,
-.hljs-change,
-.lasso .hljs-variable,
-.makefile .hljs-variable,
-.asciidoc .hljs-bullet,
-.markdown .hljs-bullet,
-.asciidoc .hljs-link_url,
-.markdown .hljs-link_url {
-  color: #080;
-}
-
-.hljs-label,
-.hljs-javadoc,
-.ruby .hljs-string,
-.hljs-decorator,
-.hljs-filter .hljs-argument,
-.hljs-localvars,
-.hljs-array,
-.hljs-attr_selector,
-.hljs-important,
-.hljs-pseudo,
-.hljs-pi,
-.haml .hljs-bullet,
-.hljs-doctype,
-.hljs-deletion,
-.hljs-envvar,
-.hljs-shebang,
-.apache .hljs-sqbracket,
-.nginx .hljs-built_in,
-.tex .hljs-formula,
-.erlang_repl .hljs-reserved,
-.hljs-prompt,
-.asciidoc .hljs-link_label,
-.markdown .hljs-link_label,
-.vhdl .hljs-attribute,
-.clojure .hljs-attribute,
-.asciidoc .hljs-attribute,
-.lasso .hljs-attribute,
-.coffeescript .hljs-property,
-.hljs-phony {
-  color: #88F
+.hljs-comment {
+  color: #888888;
 }
 
 .hljs-keyword,
-.hljs-id,
-.hljs-title,
-.hljs-built_in,
-.hljs-aggregate,
-.css .hljs-tag,
-.hljs-javadoctag,
-.hljs-phpdoc,
-.hljs-yardoctag,
-.smalltalk .hljs-class,
-.hljs-winutils,
-.bash .hljs-variable,
-.apache .hljs-tag,
-.go .hljs-typename,
-.tex .hljs-command,
-.asciidoc .hljs-strong,
-.markdown .hljs-strong,
-.hljs-request,
-.hljs-status {
+.hljs-attribute,
+.hljs-selector-tag,
+.hljs-meta-keyword,
+.hljs-doctag,
+.hljs-name {
   font-weight: bold;
 }
 
-.asciidoc .hljs-emphasis,
-.markdown .hljs-emphasis {
+
+/* User color: hue: 0 */
+
+.hljs-type,
+.hljs-string,
+.hljs-number,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-quote,
+.hljs-template-tag,
+.hljs-deletion {
+  color: #880000;
+}
+
+.hljs-title,
+.hljs-section {
+  color: #880000;
+  font-weight: bold;
+}
+
+.hljs-regexp,
+.hljs-symbol,
+.hljs-variable,
+.hljs-template-variable,
+.hljs-link,
+.hljs-selector-attr,
+.hljs-selector-pseudo {
+  color: #BC6060;
+}
+
+
+/* Language color: hue: 90; */
+
+.hljs-literal {
+  color: #78A960;
+}
+
+.hljs-built_in,
+.hljs-bullet,
+.hljs-code,
+.hljs-addition {
+  color: #397300;
+}
+
+
+/* Meta color: hue: 200 */
+
+.hljs-meta {
+  color: #1f7199;
+}
+
+.hljs-meta-string {
+  color: #4d99bf;
+}
+
+
+/* Misc effects */
+
+.hljs-emphasis {
   font-style: italic;
 }
 
-.nginx .hljs-built_in {
-  font-weight: normal;
-}
-
-.coffeescript .javascript,
-.javascript .xml,
-.lasso .markup,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
+.hljs-strong {
+  font-weight: bold;
 }
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/docco.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/docco.css
index 993fd26..db366be 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/docco.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/docco.css
@@ -3,130 +3,95 @@ Docco style used in http://jashkenas.github.com/docco/ converted by Simon Madine
 */
 
 .hljs {
-  display: block; padding: 0.5em;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
   color: #000;
-  background: #f8f8ff
+  background: #f8f8ff;
 }
 
 .hljs-comment,
-.hljs-template_comment,
-.diff .hljs-header,
-.hljs-javadoc {
+.hljs-quote {
   color: #408080;
-  font-style: italic
+  font-style: italic;
 }
 
 .hljs-keyword,
-.assignment,
+.hljs-selector-tag,
 .hljs-literal,
-.css .rule .hljs-keyword,
-.hljs-winutils,
-.javascript .hljs-title,
-.lisp .hljs-title,
 .hljs-subst {
   color: #954121;
 }
 
-.hljs-number,
-.hljs-hexcolor {
-  color: #40a070
+.hljs-number {
+  color: #40a070;
 }
 
 .hljs-string,
-.hljs-tag .hljs-value,
-.hljs-phpdoc,
-.tex .hljs-formula {
+.hljs-doctag {
   color: #219161;
 }
 
-.hljs-title,
-.hljs-id {
-  color: #19469D;
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-section,
+.hljs-type {
+  color: #19469d;
 }
+
 .hljs-params {
-  color: #00F;
+  color: #00f;
 }
 
-.javascript .hljs-title,
-.lisp .hljs-title,
-.hljs-subst {
-  font-weight: normal
-}
-
-.hljs-class .hljs-title,
-.haskell .hljs-label,
-.tex .hljs-command {
+.hljs-title {
   color: #458;
-  font-weight: bold
+  font-weight: bold;
 }
 
 .hljs-tag,
-.hljs-tag .hljs-title,
-.hljs-rules .hljs-property,
-.django .hljs-tag .hljs-keyword {
+.hljs-name,
+.hljs-attribute {
   color: #000080;
-  font-weight: normal
+  font-weight: normal;
 }
 
-.hljs-attribute,
 .hljs-variable,
-.instancevar,
-.lisp .hljs-body {
-  color: #008080
+.hljs-template-variable {
+  color: #008080;
 }
 
-.hljs-regexp {
-  color: #B68
-}
-
-.hljs-class {
-  color: #458;
-  font-weight: bold
+.hljs-regexp,
+.hljs-link {
+  color: #b68;
 }
 
 .hljs-symbol,
-.ruby .hljs-symbol .hljs-string,
-.ruby .hljs-symbol .hljs-keyword,
-.ruby .hljs-symbol .keymethods,
-.lisp .hljs-keyword,
-.tex .hljs-special,
-.input_number {
-  color: #990073
+.hljs-bullet {
+  color: #990073;
 }
 
-.builtin,
-.constructor,
 .hljs-built_in,
-.lisp .hljs-title {
-  color: #0086b3
+.hljs-builtin-name {
+  color: #0086b3;
 }
 
-.hljs-preprocessor,
-.hljs-pragma,
-.hljs-pi,
-.hljs-doctype,
-.hljs-shebang,
-.hljs-cdata {
+.hljs-meta {
   color: #999;
-  font-weight: bold
+  font-weight: bold;
 }
 
 .hljs-deletion {
-  background: #fdd
+  background: #fdd;
 }
 
 .hljs-addition {
-  background: #dfd
+  background: #dfd;
 }
 
-.diff .hljs-change {
-  background: #0086b3
+.hljs-emphasis {
+  font-style: italic;
 }
 
-.hljs-chunk {
-  color: #aaa
-}
-
-.tex .hljs-formula {
-  opacity: 0.5;
+.hljs-strong {
+  font-weight: bold;
 }
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/dracula.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/dracula.css
new file mode 100644
index 0000000..d591db6
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/dracula.css
@@ -0,0 +1,76 @@
+/*
+
+Dracula Theme v1.2.0
+
+https://github.com/zenorocha/dracula-theme
+
+Copyright 2015, All rights reserved
+
+Code licensed under the MIT license
+http://zenorocha.mit-license.org
+
+@author Éverton Ribeiro <nuxlli@gmail.com>
+@author Zeno Rocha <hi@zenorocha.com>
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #282a36;
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-literal,
+.hljs-section,
+.hljs-link {
+  color: #8be9fd;
+}
+
+.hljs-function .hljs-keyword {
+  color: #ff79c6;
+}
+
+.hljs,
+.hljs-subst {
+  color: #f8f8f2;
+}
+
+.hljs-string,
+.hljs-title,
+.hljs-name,
+.hljs-type,
+.hljs-attribute,
+.hljs-symbol,
+.hljs-bullet,
+.hljs-addition,
+.hljs-variable,
+.hljs-template-tag,
+.hljs-template-variable {
+  color: #f1fa8c;
+}
+
+.hljs-comment,
+.hljs-quote,
+.hljs-deletion,
+.hljs-meta {
+  color: #6272a4;
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-literal,
+.hljs-title,
+.hljs-section,
+.hljs-doctag,
+.hljs-type,
+.hljs-name,
+.hljs-strong {
+  font-weight: bold;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/far.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/far.css
index ecac3c9..2b3f87b 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/far.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/far.css
@@ -5,109 +5,67 @@ FAR Style (c) MajestiC <majestic2k@gmail.com>
 */
 
 .hljs {
-  display: block; padding: 0.5em;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
   background: #000080;
 }
 
 .hljs,
 .hljs-subst {
-  color: #0FF;
+  color: #0ff;
 }
 
 .hljs-string,
-.ruby .hljs-string,
-.haskell .hljs-type,
-.hljs-tag .hljs-value,
-.css .hljs-rules .hljs-value,
-.css .hljs-rules .hljs-value .hljs-number,
-.hljs-preprocessor,
-.hljs-pragma,
-.ruby .hljs-symbol,
-.ruby .hljs-symbol .hljs-string,
+.hljs-attribute,
+.hljs-symbol,
+.hljs-bullet,
 .hljs-built_in,
-.sql .hljs-aggregate,
-.django .hljs-template_tag,
-.django .hljs-variable,
-.smalltalk .hljs-class,
-.hljs-addition,
-.apache .hljs-tag,
-.apache .hljs-cbracket,
-.tex .hljs-command,
-.clojure .hljs-title,
-.coffeescript .hljs-attribute {
-  color: #FF0;
+.hljs-builtin-name,
+.hljs-template-tag,
+.hljs-template-variable,
+.hljs-addition {
+  color: #ff0;
 }
 
 .hljs-keyword,
-.css .hljs-id,
-.hljs-title,
-.haskell .hljs-type,
-.vbscript .hljs-built_in,
-.sql .hljs-aggregate,
-.rsl .hljs-built_in,
-.smalltalk .hljs-class,
-.xml .hljs-tag .hljs-title,
-.hljs-winutils,
-.hljs-flow,
-.hljs-change,
-.hljs-envvar,
-.bash .hljs-variable,
-.tex .hljs-special,
-.clojure .hljs-built_in {
-  color: #FFF;
+.hljs-selector-tag,
+.hljs-section,
+.hljs-type,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-variable {
+  color: #fff;
 }
 
 .hljs-comment,
-.hljs-phpdoc,
-.hljs-javadoc,
-.java .hljs-annotation,
-.hljs-template_comment,
-.hljs-deletion,
-.apache .hljs-sqbracket,
-.tex .hljs-formula {
+.hljs-quote,
+.hljs-doctag,
+.hljs-deletion {
   color: #888;
 }
 
 .hljs-number,
-.hljs-date,
 .hljs-regexp,
 .hljs-literal,
-.smalltalk .hljs-symbol,
-.smalltalk .hljs-char,
-.clojure .hljs-attribute {
-  color: #0F0;
+.hljs-link {
+  color: #0f0;
 }
 
-.python .hljs-decorator,
-.django .hljs-filter .hljs-argument,
-.smalltalk .hljs-localvars,
-.smalltalk .hljs-array,
-.hljs-attr_selector,
-.hljs-pseudo,
-.xml .hljs-pi,
-.diff .hljs-header,
-.hljs-chunk,
-.hljs-shebang,
-.nginx .hljs-built_in,
-.hljs-prompt {
+.hljs-meta {
   color: #008080;
 }
 
 .hljs-keyword,
-.css .hljs-id,
+.hljs-selector-tag,
 .hljs-title,
-.haskell .hljs-type,
-.vbscript .hljs-built_in,
-.sql .hljs-aggregate,
-.rsl .hljs-built_in,
-.smalltalk .hljs-class,
-.hljs-winutils,
-.hljs-flow,
-.apache .hljs-tag,
-.nginx .hljs-built_in,
-.tex .hljs-command,
-.tex .hljs-special,
-.hljs-request,
-.hljs-status {
+.hljs-section,
+.hljs-name,
+.hljs-strong {
   font-weight: bold;
 }
+
+.hljs-emphasis {
+  font-style: italic;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/foundation.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/foundation.css
index bc8d4df..f1fe64b 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/foundation.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/foundation.css
@@ -7,20 +7,16 @@ Date: 2013-04-02
 */
 
 .hljs {
-  display: block; padding: 0.5em;
-  background: #eee;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #eee; color: black;
 }
 
-.hljs-header,
-.hljs-decorator,
-.hljs-annotation {
-  color: #000077;
-}
-
-.hljs-horizontal_rule,
-.hljs-link_url,
+.hljs-link,
 .hljs-emphasis,
-.hljs-attribute {
+.hljs-attribute,
+.hljs-addition {
   color: #070;
 }
 
@@ -28,11 +24,9 @@ Date: 2013-04-02
   font-style: italic;
 }
 
-.hljs-link_label,
 .hljs-strong,
-.hljs-value,
 .hljs-string,
-.scss .hljs-value .hljs-string {
+.hljs-deletion {
   color: #d14;
 }
 
@@ -40,65 +34,41 @@ Date: 2013-04-02
   font-weight: bold;
 }
 
-.hljs-blockquote,
+.hljs-quote,
 .hljs-comment {
   color: #998;
   font-style: italic;
 }
 
-.asciidoc .hljs-title,
-.hljs-function .hljs-title {
+.hljs-section,
+.hljs-title {
   color: #900;
 }
 
-.hljs-class {
+.hljs-class .hljs-title,
+.hljs-type {
   color: #458;
 }
 
-.hljs-id,
-.hljs-pseudo,
-.hljs-constant,
-.hljs-hexcolor {
-  color: teal;
-}
-
-.hljs-variable {
+.hljs-variable,
+.hljs-template-variable {
   color: #336699;
 }
 
-.hljs-bullet,
-.hljs-javadoc {
+.hljs-bullet {
   color: #997700;
 }
 
-.hljs-pi,
-.hljs-doctype {
+.hljs-meta {
   color: #3344bb;
 }
 
 .hljs-code,
-.hljs-number {
-  color: #099;
-}
-
-.hljs-important {
-  color: #f00;
-}
-
-.smartquote,
-.hljs-label {
-  color: #970;
-}
-
-.hljs-preprocessor,
-.hljs-pragma {
-  color: #579;
-}
-
-.hljs-reserved,
+.hljs-number,
+.hljs-literal,
 .hljs-keyword,
-.scss .hljs-value {
-  color: #000;
+.hljs-selector-tag {
+  color: #099;
 }
 
 .hljs-regexp {
@@ -110,24 +80,9 @@ Date: 2013-04-02
   color: #990073;
 }
 
-.hljs-symbol .hljs-string {
-  color: #a60;
-}
-
-.hljs-tag {
+.hljs-tag,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
   color: #007700;
 }
-
-.hljs-at_rule,
-.hljs-at_rule .hljs-keyword {
-  color: #088;
-}
-
-.hljs-at_rule .hljs-preprocessor {
-  color: #808;
-}
-
-.scss .hljs-tag,
-.scss .hljs-attribute {
-  color: #339;
-}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/github-gist.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/github-gist.css
new file mode 100644
index 0000000..155f0b9
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/github-gist.css
@@ -0,0 +1,71 @@
+/**
+ * GitHub Gist Theme
+ * Author : Louis Barranqueiro - https://github.com/LouisBarranqueiro
+ */
+
+.hljs {
+  display: block;
+  background: white;
+  padding: 0.5em;
+  color: #333333;
+  overflow-x: auto;
+}
+
+.hljs-comment,
+.hljs-meta {
+  color: #969896;
+}
+
+.hljs-string,
+.hljs-variable,
+.hljs-template-variable,
+.hljs-strong,
+.hljs-emphasis,
+.hljs-quote {
+  color: #df5000;
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-type {
+  color: #a71d5d;
+}
+
+.hljs-literal,
+.hljs-symbol,
+.hljs-bullet,
+.hljs-attribute {
+  color: #0086b3;
+}
+
+.hljs-section,
+.hljs-name {
+  color: #63a35c;
+}
+
+.hljs-tag {
+  color: #333333;
+}
+
+.hljs-title,
+.hljs-attr,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-selector-attr,
+.hljs-selector-pseudo {
+  color: #795da3;
+}
+
+.hljs-addition {
+  color: #55a532;
+  background-color: #eaffea;
+}
+
+.hljs-deletion {
+  color: #bd2c00;
+  background-color: #ffecec;
+}
+
+.hljs-link {
+  text-decoration: underline;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/github.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/github.css
index 71967a3..791932b 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/github.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/github.css
@@ -5,121 +5,95 @@ github.com style (c) Vasily Polovnyov <vast@whiteants.net>
 */
 
 .hljs {
-  display: block; padding: 0.5em;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
   color: #333;
-  background: #f8f8f8
+  background: #f8f8f8;
 }
 
 .hljs-comment,
-.hljs-template_comment,
-.diff .hljs-header,
-.hljs-javadoc {
+.hljs-quote {
   color: #998;
-  font-style: italic
+  font-style: italic;
 }
 
 .hljs-keyword,
-.css .rule .hljs-keyword,
-.hljs-winutils,
-.javascript .hljs-title,
-.nginx .hljs-title,
-.hljs-subst,
-.hljs-request,
-.hljs-status {
+.hljs-selector-tag,
+.hljs-subst {
   color: #333;
-  font-weight: bold
+  font-weight: bold;
 }
 
 .hljs-number,
-.hljs-hexcolor,
-.ruby .hljs-constant {
-  color: #099;
+.hljs-literal,
+.hljs-variable,
+.hljs-template-variable,
+.hljs-tag .hljs-attr {
+  color: #008080;
 }
 
 .hljs-string,
-.hljs-tag .hljs-value,
-.hljs-phpdoc,
-.tex .hljs-formula {
-  color: #d14
+.hljs-doctag {
+  color: #d14;
 }
 
 .hljs-title,
-.hljs-id,
-.coffeescript .hljs-params,
-.scss .hljs-preprocessor {
+.hljs-section,
+.hljs-selector-id {
   color: #900;
-  font-weight: bold
+  font-weight: bold;
 }
 
-.javascript .hljs-title,
-.lisp .hljs-title,
-.clojure .hljs-title,
 .hljs-subst {
-  font-weight: normal
+  font-weight: normal;
 }
 
-.hljs-class .hljs-title,
-.haskell .hljs-type,
-.vhdl .hljs-literal,
-.tex .hljs-command {
+.hljs-type,
+.hljs-class .hljs-title {
   color: #458;
-  font-weight: bold
+  font-weight: bold;
 }
 
 .hljs-tag,
-.hljs-tag .hljs-title,
-.hljs-rules .hljs-property,
-.django .hljs-tag .hljs-keyword {
+.hljs-name,
+.hljs-attribute {
   color: #000080;
-  font-weight: normal
+  font-weight: normal;
 }
 
-.hljs-attribute,
-.hljs-variable,
-.lisp .hljs-body {
-  color: #008080
-}
-
-.hljs-regexp {
-  color: #009926
+.hljs-regexp,
+.hljs-link {
+  color: #009926;
 }
 
 .hljs-symbol,
-.ruby .hljs-symbol .hljs-string,
-.lisp .hljs-keyword,
-.tex .hljs-special,
-.hljs-prompt {
-  color: #990073
+.hljs-bullet {
+  color: #990073;
 }
 
 .hljs-built_in,
-.lisp .hljs-title,
-.clojure .hljs-built_in {
-  color: #0086b3
+.hljs-builtin-name {
+  color: #0086b3;
 }
 
-.hljs-preprocessor,
-.hljs-pragma,
-.hljs-pi,
-.hljs-doctype,
-.hljs-shebang,
-.hljs-cdata {
+.hljs-meta {
   color: #999;
-  font-weight: bold
+  font-weight: bold;
 }
 
 .hljs-deletion {
-  background: #fdd
+  background: #fdd;
 }
 
 .hljs-addition {
-  background: #dfd
+  background: #dfd;
 }
 
-.diff .hljs-change {
-  background: #0086b3
+.hljs-emphasis {
+  font-style: italic;
 }
 
-.hljs-chunk {
-  color: #aaa
+.hljs-strong {
+  font-weight: bold;
 }
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/gml.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/gml.css
new file mode 100644
index 0000000..ffb5e47
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/gml.css
@@ -0,0 +1,78 @@
+/*
+
+GML Theme - Meseta <meseta@gmail.com>
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #222222;
+  color: #C0C0C0;
+}
+
+.hljs-keywords {
+  color: #FFB871;
+  font-weight: bold;
+}
+
+.hljs-built_in {
+  color: #FFB871;
+}
+
+.hljs-literal {
+  color: #FF8080;
+}
+
+.hljs-symbol {
+  color: #58E55A;
+}
+
+.hljs-comment {
+  color: #5B995B;
+}
+
+.hljs-string {
+  color: #FFFF00;
+}
+
+.hljs-number {
+  color: #FF8080;
+}
+
+.hljs-attribute,
+.hljs-selector-tag,
+.hljs-doctag,
+.hljs-name,
+.hljs-bullet,
+.hljs-code,
+.hljs-addition,
+.hljs-regexp,
+.hljs-variable,
+.hljs-template-variable,
+.hljs-link,
+.hljs-selector-attr,
+.hljs-selector-pseudo,
+.hljs-type,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-quote,
+.hljs-template-tag,
+.hljs-deletion,
+.hljs-title,
+.hljs-section,
+.hljs-function,
+.hljs-meta-keyword,
+.hljs-meta,
+.hljs-subst {
+  color: #C0C0C0;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/googlecode.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/googlecode.css
index 45b8b3b..884ad63 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/googlecode.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/googlecode.css
@@ -5,143 +5,85 @@ Google Code style (c) Aahan Krish <geekpanth3r@gmail.com>
 */
 
 .hljs {
-  display: block; padding: 0.5em;
-  background: white; color: black;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: white;
+  color: black;
 }
 
 .hljs-comment,
-.hljs-template_comment,
-.hljs-javadoc,
-.hljs-comment * {
+.hljs-quote {
   color: #800;
 }
 
 .hljs-keyword,
-.method,
-.hljs-list .hljs-title,
-.clojure .hljs-built_in,
-.nginx .hljs-title,
-.hljs-tag .hljs-title,
-.setting .hljs-value,
-.hljs-winutils,
-.tex .hljs-command,
-.http .hljs-title,
-.hljs-request,
-.hljs-status {
+.hljs-selector-tag,
+.hljs-section,
+.hljs-title,
+.hljs-name {
   color: #008;
 }
 
-.hljs-envvar,
-.tex .hljs-special {
+.hljs-variable,
+.hljs-template-variable {
   color: #660;
 }
 
 .hljs-string,
-.hljs-tag .hljs-value,
-.hljs-cdata,
-.hljs-filter .hljs-argument,
-.hljs-attr_selector,
-.apache .hljs-cbracket,
-.hljs-date,
-.hljs-regexp,
-.coffeescript .hljs-attribute {
+.hljs-selector-attr,
+.hljs-selector-pseudo,
+.hljs-regexp {
   color: #080;
 }
 
-.hljs-sub .hljs-identifier,
-.hljs-pi,
-.hljs-tag,
-.hljs-tag .hljs-keyword,
-.hljs-decorator,
-.ini .hljs-title,
-.hljs-shebang,
-.hljs-prompt,
-.hljs-hexcolor,
-.hljs-rules .hljs-value,
-.css .hljs-value .hljs-number,
 .hljs-literal,
 .hljs-symbol,
-.ruby .hljs-symbol .hljs-string,
+.hljs-bullet,
+.hljs-meta,
 .hljs-number,
-.css .hljs-function,
-.clojure .hljs-attribute {
+.hljs-link {
   color: #066;
 }
 
-.hljs-class .hljs-title,
-.haskell .hljs-type,
-.smalltalk .hljs-class,
-.hljs-javadoctag,
-.hljs-yardoctag,
-.hljs-phpdoc,
-.hljs-typename,
-.hljs-tag .hljs-attribute,
-.hljs-doctype,
-.hljs-class .hljs-id,
+.hljs-title,
+.hljs-doctag,
+.hljs-type,
+.hljs-attr,
 .hljs-built_in,
-.setting,
-.hljs-params,
-.hljs-variable,
-.clojure .hljs-title {
+.hljs-builtin-name,
+.hljs-params {
   color: #606;
 }
 
-.css .hljs-tag,
-.hljs-rules .hljs-property,
-.hljs-pseudo,
+.hljs-attribute,
 .hljs-subst {
   color: #000;
 }
 
-.css .hljs-class,
-.css .hljs-id {
-  color: #9B703F;
-}
-
-.hljs-value .hljs-important {
-  color: #ff7700;
-  font-weight: bold;
-}
-
-.hljs-rules .hljs-keyword {
-  color: #C5AF75;
-}
-
-.hljs-annotation,
-.apache .hljs-sqbracket,
-.nginx .hljs-built_in {
-  color: #9B859D;
-}
-
-.hljs-preprocessor,
-.hljs-preprocessor *,
-.hljs-pragma {
-  color: #444;
-}
-
-.tex .hljs-formula {
-  background-color: #EEE;
+.hljs-formula {
+  background-color: #eee;
   font-style: italic;
 }
 
-.diff .hljs-header,
-.hljs-chunk {
-  color: #808080;
-  font-weight: bold;
-}
-
-.diff .hljs-change {
-  background-color: #BCCFF9;
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #9B703F
 }
 
 .hljs-addition {
-  background-color: #BAEEBA;
+  background-color: #baeeba;
 }
 
 .hljs-deletion {
-  background-color: #FFC8BD;
+  background-color: #ffc8bd;
 }
 
-.hljs-comment .hljs-yardoctag {
+.hljs-doctag,
+.hljs-strong {
   font-weight: bold;
 }
+
+.hljs-emphasis {
+  font-style: italic;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/grayscale.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/grayscale.css
new file mode 100644
index 0000000..5376f34
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/grayscale.css
@@ -0,0 +1,101 @@
+/*
+
+grayscale style (c) MY Sun <simonmysun@gmail.com>
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  color: #333;
+  background: #fff;
+}
+
+.hljs-comment,
+.hljs-quote {
+  color: #777;
+  font-style: italic;
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-subst {
+  color: #333;
+  font-weight: bold;
+}
+
+.hljs-number,
+.hljs-literal {
+  color: #777;
+}
+
+.hljs-string,
+.hljs-doctag,
+.hljs-formula {
+  color: #333;
+  background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAQAAAAECAYAAACp8Z5+AAAAJ0lEQVQIW2O8e/fufwYGBgZBQUEQxcCIIfDu3Tuwivfv30NUoAsAALHpFMMLqZlPAAAAAElFTkSuQmCC) repeat;
+}
+
+.hljs-title,
+.hljs-section,
+.hljs-selector-id {
+  color: #000;
+  font-weight: bold;
+}
+
+.hljs-subst {
+  font-weight: normal;
+}
+
+.hljs-class .hljs-title,
+.hljs-type,
+.hljs-name {
+  color: #333;
+  font-weight: bold;
+}
+
+.hljs-tag {
+  color: #333;
+}
+
+.hljs-regexp {
+    color: #333;
+    background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAICAYAAADA+m62AAAAPUlEQVQYV2NkQAN37979r6yszIgujiIAU4RNMVwhuiQ6H6wQl3XI4oy4FMHcCJPHcDS6J2A2EqUQpJhohQDexSef15DBCwAAAABJRU5ErkJggg==) repeat;
+}
+
+.hljs-symbol,
+.hljs-bullet,
+.hljs-link {
+  color: #000;
+  background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAKElEQVQIW2NkQAO7d+/+z4gsBhJwdXVlhAvCBECKwIIwAbhKZBUwBQA6hBpm5efZsgAAAABJRU5ErkJggg==) repeat;
+}
+
+.hljs-built_in,
+.hljs-builtin-name {
+  color: #000;
+  text-decoration: underline;
+}
+
+.hljs-meta {
+  color: #999;
+  font-weight: bold;
+}
+
+.hljs-deletion {
+  color: #fff;
+  background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAADCAYAAABS3WWCAAAAE0lEQVQIW2MMDQ39zzhz5kwIAQAyxweWgUHd1AAAAABJRU5ErkJggg==) repeat;
+}
+
+.hljs-addition {
+  color: #000;
+  background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAkAAAAJCAYAAADgkQYQAAAALUlEQVQYV2N89+7dfwYk8P79ewZBQUFkIQZGOiu6e/cuiptQHAPl0NtNxAQBAM97Oejj3Dg7AAAAAElFTkSuQmCC) repeat;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/gruvbox-dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/gruvbox-dark.css
new file mode 100644
index 0000000..f563811
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/gruvbox-dark.css
@@ -0,0 +1,108 @@
+/*
+
+Gruvbox style (dark) (c) Pavel Pertsev (original style at https://github.com/morhetz/gruvbox)
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #282828;
+}
+
+.hljs,
+.hljs-subst {
+  color: #ebdbb2;
+}
+
+/* Gruvbox Red */
+.hljs-deletion,
+.hljs-formula,
+.hljs-keyword,
+.hljs-link,
+.hljs-selector-tag {
+  color: #fb4934;
+}
+
+/* Gruvbox Blue */
+.hljs-built_in,
+.hljs-emphasis,
+.hljs-name,
+.hljs-quote,
+.hljs-strong,
+.hljs-title,
+.hljs-variable {
+  color: #83a598;
+}
+
+/* Gruvbox Yellow */
+.hljs-attr,
+.hljs-params,
+.hljs-template-tag,
+.hljs-type {
+  color: #fabd2f;
+}
+
+/* Gruvbox Purple */
+.hljs-builtin-name,
+.hljs-doctag,
+.hljs-literal,
+.hljs-number {
+  color: #8f3f71;
+}
+
+/* Gruvbox Orange */
+.hljs-code,
+.hljs-meta,
+.hljs-regexp,
+.hljs-selector-id,
+.hljs-template-variable {
+  color: #fe8019;
+}
+
+/* Gruvbox Green */
+.hljs-addition,
+.hljs-meta-string,
+.hljs-section,
+.hljs-selector-attr,
+.hljs-selector-class,
+.hljs-string,
+.hljs-symbol {
+  color: #b8bb26;
+}
+
+/* Gruvbox Aqua */
+.hljs-attribute,
+.hljs-bullet,
+.hljs-class,
+.hljs-function,
+.hljs-function .hljs-keyword,
+.hljs-meta-keyword,
+.hljs-selector-pseudo,
+.hljs-tag {
+  color: #8ec07c;
+}
+
+/* Gruvbox Gray */
+.hljs-comment {
+  color: #928374;
+}
+
+/* Gruvbox Purple */
+.hljs-link_label,
+.hljs-literal,
+.hljs-number {
+  color: #d3869b;
+}
+
+.hljs-comment,
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-section,
+.hljs-strong,
+.hljs-tag {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/gruvbox-light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/gruvbox-light.css
new file mode 100644
index 0000000..ff45468
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/gruvbox-light.css
@@ -0,0 +1,108 @@
+/*
+
+Gruvbox style (light) (c) Pavel Pertsev (original style at https://github.com/morhetz/gruvbox)
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #fbf1c7;
+}
+
+.hljs,
+.hljs-subst {
+  color: #3c3836;
+}
+
+/* Gruvbox Red */
+.hljs-deletion,
+.hljs-formula,
+.hljs-keyword,
+.hljs-link,
+.hljs-selector-tag {
+  color: #9d0006;
+}
+
+/* Gruvbox Blue */
+.hljs-built_in,
+.hljs-emphasis,
+.hljs-name,
+.hljs-quote,
+.hljs-strong,
+.hljs-title,
+.hljs-variable {
+  color: #076678;
+}
+
+/* Gruvbox Yellow */
+.hljs-attr,
+.hljs-params,
+.hljs-template-tag,
+.hljs-type {
+  color: #b57614;
+}
+
+/* Gruvbox Purple */
+.hljs-builtin-name,
+.hljs-doctag,
+.hljs-literal,
+.hljs-number {
+  color: #8f3f71;
+}
+
+/* Gruvbox Orange */
+.hljs-code,
+.hljs-meta,
+.hljs-regexp,
+.hljs-selector-id,
+.hljs-template-variable {
+  color: #af3a03;
+}
+
+/* Gruvbox Green */
+.hljs-addition,
+.hljs-meta-string,
+.hljs-section,
+.hljs-selector-attr,
+.hljs-selector-class,
+.hljs-string,
+.hljs-symbol {
+  color: #79740e;
+}
+
+/* Gruvbox Aqua */
+.hljs-attribute,
+.hljs-bullet,
+.hljs-class,
+.hljs-function,
+.hljs-function .hljs-keyword,
+.hljs-meta-keyword,
+.hljs-selector-pseudo,
+.hljs-tag {
+  color: #427b58;
+}
+
+/* Gruvbox Gray */
+.hljs-comment {
+  color: #928374;
+}
+
+/* Gruvbox Purple */
+.hljs-link_label,
+.hljs-literal,
+.hljs-number {
+  color: #8f3f71;
+}
+
+.hljs-comment,
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-section,
+.hljs-strong,
+.hljs-tag {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/hopscotch.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/hopscotch.css
new file mode 100644
index 0000000..32e60d2
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/hopscotch.css
@@ -0,0 +1,83 @@
+/*
+ * Hopscotch
+ * by Jan T. Sott
+ * https://github.com/idleberg/Hopscotch
+ *
+ * This work is licensed under the Creative Commons CC0 1.0 Universal License
+ */
+
+/* Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #989498;
+}
+
+/* Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute,
+.hljs-tag,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-regexp,
+.hljs-link,
+.hljs-deletion {
+  color: #dd464c;
+}
+
+/* Orange */
+.hljs-number,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params {
+  color: #fd8b19;
+}
+
+/* Yellow */
+.hljs-class .hljs-title {
+  color: #fdcc59;
+}
+
+/* Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet,
+.hljs-addition {
+  color: #8fc13e;
+}
+
+/* Aqua */
+.hljs-meta {
+  color: #149b93;
+}
+
+/* Blue */
+.hljs-function,
+.hljs-section,
+.hljs-title {
+  color: #1290bf;
+}
+
+/* Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #c85e7c;
+}
+
+.hljs {
+  display: block;
+  background: #322931;
+  color: #b9b5b8;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/hybrid.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/hybrid.css
new file mode 100644
index 0000000..29735a1
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/hybrid.css
@@ -0,0 +1,102 @@
+/*
+
+vim-hybrid theme by w0ng (https://github.com/w0ng/vim-hybrid)
+
+*/
+
+/*background color*/
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #1d1f21;
+}
+
+/*selection color*/
+.hljs::selection,
+.hljs span::selection {
+  background: #373b41;
+}
+
+.hljs::-moz-selection,
+.hljs span::-moz-selection {
+  background: #373b41;
+}
+
+/*foreground color*/
+.hljs {
+  color: #c5c8c6;
+}
+
+/*color: fg_yellow*/
+.hljs-title,
+.hljs-name {
+  color: #f0c674;
+}
+
+/*color: fg_comment*/
+.hljs-comment,
+.hljs-meta,
+.hljs-meta .hljs-keyword {
+  color: #707880;
+}
+
+/*color: fg_red*/
+.hljs-number,
+.hljs-symbol,
+.hljs-literal,
+.hljs-deletion,
+.hljs-link {
+ color: #cc6666
+}
+
+/*color: fg_green*/
+.hljs-string,
+.hljs-doctag,
+.hljs-addition,
+.hljs-regexp,
+.hljs-selector-attr,
+.hljs-selector-pseudo {
+  color: #b5bd68;
+}
+
+/*color: fg_purple*/
+.hljs-attribute,
+.hljs-code,
+.hljs-selector-id {
+ color: #b294bb;
+}
+
+/*color: fg_blue*/
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-bullet,
+.hljs-tag {
+ color: #81a2be;
+}
+
+/*color: fg_aqua*/
+.hljs-subst,
+.hljs-variable,
+.hljs-template-tag,
+.hljs-template-variable {
+  color: #8abeb7;
+}
+
+/*color: fg_orange*/
+.hljs-type,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-quote,
+.hljs-section,
+.hljs-selector-class {
+  color: #de935f;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/idea.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/idea.css
index 77352f4..3bf1892 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/idea.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/idea.css
@@ -5,7 +5,9 @@ Intellij Idea-like styling (c) Vasily Polovnyov <vast@whiteants.net>
 */
 
 .hljs {
-  display: block; padding: 0.5em;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
   color: #000;
   background: #fff;
 }
@@ -17,95 +19,64 @@ Intellij Idea-like styling (c) Vasily Polovnyov <vast@whiteants.net>
 }
 
 .hljs-comment,
-.hljs-template_comment,
-.hljs-javadoc,
-.diff .hljs-header {
+.hljs-quote {
   color: #808080;
   font-style: italic;
 }
 
-.hljs-annotation,
-.hljs-decorator,
-.hljs-preprocessor,
-.hljs-pragma,
-.hljs-doctype,
-.hljs-pi,
-.hljs-chunk,
-.hljs-shebang,
-.apache .hljs-cbracket,
-.hljs-prompt,
-.http .hljs-title {
+.hljs-meta {
   color: #808000;
 }
 
-.hljs-tag,
-.hljs-pi {
+.hljs-tag {
   background: #efefef;
 }
 
-.hljs-tag .hljs-title,
-.hljs-id,
-.hljs-attr_selector,
-.hljs-pseudo,
+.hljs-section,
+.hljs-name,
 .hljs-literal,
 .hljs-keyword,
-.hljs-hexcolor,
-.css .hljs-function,
-.ini .hljs-title,
-.css .hljs-class,
-.hljs-list .hljs-title,
-.clojure .hljs-title,
-.nginx .hljs-title,
-.tex .hljs-command,
-.hljs-request,
-.hljs-status {
+.hljs-selector-tag,
+.hljs-type,
+.hljs-selector-id,
+.hljs-selector-class {
   font-weight: bold;
   color: #000080;
 }
 
 .hljs-attribute,
-.hljs-rules .hljs-keyword,
 .hljs-number,
-.hljs-date,
 .hljs-regexp,
-.tex .hljs-special {
+.hljs-link {
   font-weight: bold;
   color: #0000ff;
 }
 
 .hljs-number,
-.hljs-regexp {
+.hljs-regexp,
+.hljs-link {
   font-weight: normal;
 }
 
-.hljs-string,
-.hljs-value,
-.hljs-filter .hljs-argument,
-.css .hljs-function .hljs-params,
-.apache .hljs-tag {
+.hljs-string {
   color: #008000;
   font-weight: bold;
 }
 
 .hljs-symbol,
-.ruby .hljs-symbol .hljs-string,
-.hljs-char,
-.tex .hljs-formula {
+.hljs-bullet,
+.hljs-formula {
   color: #000;
   background: #d0eded;
   font-style: italic;
 }
 
-.hljs-phpdoc,
-.hljs-yardoctag,
-.hljs-javadoctag {
+.hljs-doctag {
   text-decoration: underline;
 }
 
 .hljs-variable,
-.hljs-envvar,
-.apache .hljs-sqbracket,
-.nginx .hljs-built_in {
+.hljs-template-variable {
   color: #660e7a;
 }
 
@@ -117,6 +88,10 @@ Intellij Idea-like styling (c) Vasily Polovnyov <vast@whiteants.net>
   background: #ffc8bd;
 }
 
-.diff .hljs-change {
-  background: #bccff9;
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
 }
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/ir-black.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/ir-black.css
new file mode 100644
index 0000000..bd4c755
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/ir-black.css
@@ -0,0 +1,73 @@
+/*
+  IR_Black style (c) Vasily Mikhailitchenko <vaskas@programica.ru>
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #000;
+  color: #f8f8f8;
+}
+
+.hljs-comment,
+.hljs-quote,
+.hljs-meta {
+  color: #7c7c7c;
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-tag,
+.hljs-name {
+  color: #96cbfe;
+}
+
+.hljs-attribute,
+.hljs-selector-id {
+  color: #ffffb6;
+}
+
+.hljs-string,
+.hljs-selector-attr,
+.hljs-selector-pseudo,
+.hljs-addition {
+  color: #a8ff60;
+}
+
+.hljs-subst {
+  color: #daefa3;
+}
+
+.hljs-regexp,
+.hljs-link {
+  color: #e9c062;
+}
+
+.hljs-title,
+.hljs-section,
+.hljs-type,
+.hljs-doctag {
+  color: #ffffb6;
+}
+
+.hljs-symbol,
+.hljs-bullet,
+.hljs-variable,
+.hljs-template-variable,
+.hljs-literal {
+  color: #c6c5fe;
+}
+
+.hljs-number,
+.hljs-deletion {
+  color:#ff73fd;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/ir_black.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/ir_black.css
deleted file mode 100644
index cc64ef5..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/ir_black.css
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
-  IR_Black style (c) Vasily Mikhailitchenko <vaskas@programica.ru>
-*/
-
-.hljs {
-  display: block; padding: 0.5em;
-  background: #000; color: #f8f8f8;
-}
-
-.hljs-shebang,
-.hljs-comment,
-.hljs-template_comment,
-.hljs-javadoc {
-  color: #7c7c7c;
-}
-
-.hljs-keyword,
-.hljs-tag,
-.tex .hljs-command,
-.hljs-request,
-.hljs-status,
-.clojure .hljs-attribute {
-  color: #96CBFE;
-}
-
-.hljs-sub .hljs-keyword,
-.method,
-.hljs-list .hljs-title,
-.nginx .hljs-title {
-  color: #FFFFB6;
-}
-
-.hljs-string,
-.hljs-tag .hljs-value,
-.hljs-cdata,
-.hljs-filter .hljs-argument,
-.hljs-attr_selector,
-.apache .hljs-cbracket,
-.hljs-date,
-.coffeescript .hljs-attribute {
-  color: #A8FF60;
-}
-
-.hljs-subst {
-  color: #DAEFA3;
-}
-
-.hljs-regexp {
-  color: #E9C062;
-}
-
-.hljs-title,
-.hljs-sub .hljs-identifier,
-.hljs-pi,
-.hljs-decorator,
-.tex .hljs-special,
-.haskell .hljs-type,
-.hljs-constant,
-.smalltalk .hljs-class,
-.hljs-javadoctag,
-.hljs-yardoctag,
-.hljs-phpdoc,
-.nginx .hljs-built_in {
-  color: #FFFFB6;
-}
-
-.hljs-symbol,
-.ruby .hljs-symbol .hljs-string,
-.hljs-number,
-.hljs-variable,
-.vbscript,
-.hljs-literal {
-  color: #C6C5FE;
-}
-
-.css .hljs-tag {
-  color: #96CBFE;
-}
-
-.css .hljs-rules .hljs-property,
-.css .hljs-id {
-  color: #FFFFB6;
-}
-
-.css .hljs-class {
-  color: #FFF;
-}
-
-.hljs-hexcolor {
-  color: #C6C5FE;
-}
-
-.hljs-number {
-  color:#FF73FD;
-}
-
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.7;
-}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/isbl-editor-dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/isbl-editor-dark.css
new file mode 100644
index 0000000..2f1d95d
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/isbl-editor-dark.css
@@ -0,0 +1,112 @@
+/*
+
+ISBL Editor style dark color scheme (c) Dmitriy Tarasov <dimatar@gmail.com>
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #404040;
+  color: #f0f0f0;
+}
+
+/* Base color: saturation 0; */
+
+.hljs,
+.hljs-subst {
+  color: #f0f0f0;
+}
+
+.hljs-comment {
+  color: #b5b5b5;
+  font-style: italic;
+}
+
+.hljs-keyword,
+.hljs-attribute,
+.hljs-selector-tag,
+.hljs-meta-keyword,
+.hljs-doctag,
+.hljs-name {
+  color: #f0f0f0;
+  font-weight: bold;
+}
+
+
+/* User color: hue: 0 */
+
+.hljs-string {
+  color: #97bf0d;
+}
+
+.hljs-type,
+.hljs-number,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-quote,
+.hljs-template-tag,
+.hljs-deletion {
+  color: #f0f0f0;
+}
+
+.hljs-title,
+.hljs-section {
+  color: #df471e;
+}
+
+.hljs-title>.hljs-built_in {
+  color: #81bce9;
+  font-weight: normal;
+}
+
+.hljs-regexp,
+.hljs-symbol,
+.hljs-variable,
+.hljs-template-variable,
+.hljs-link,
+.hljs-selector-attr,
+.hljs-selector-pseudo {
+  color: #e2c696;
+}
+
+/* Language color: hue: 90; */
+
+.hljs-built_in,
+.hljs-literal {
+  color: #97bf0d;
+  font-weight: bold;
+}
+
+.hljs-bullet,
+.hljs-code,
+.hljs-addition {
+  color: #397300;
+}
+
+.hljs-class  {
+  color: #ce9d4d;
+  font-weight: bold;
+}
+
+/* Meta color: hue: 200 */
+
+.hljs-meta {
+  color: #1f7199;
+}
+
+.hljs-meta-string {
+  color: #4d99bf;
+}
+
+
+/* Misc effects */
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/isbl-editor-light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/isbl-editor-light.css
new file mode 100644
index 0000000..633070d
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/isbl-editor-light.css
@@ -0,0 +1,112 @@
+/*
+
+ISBL Editor style light color schemec (c) Dmitriy Tarasov <dimatar@gmail.com>
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: white;
+  color: black;
+}
+
+/* Base color: saturation 0; */
+
+.hljs,
+.hljs-subst {
+  color: #000000;
+}
+
+.hljs-comment {
+  color: #555555;
+  font-style: italic;
+}
+
+.hljs-keyword,
+.hljs-attribute,
+.hljs-selector-tag,
+.hljs-meta-keyword,
+.hljs-doctag,
+.hljs-name {
+  color: #000000;
+  font-weight: bold;
+}
+
+
+/* User color: hue: 0 */
+
+.hljs-string {
+  color: #000080;
+}
+
+.hljs-type,
+.hljs-number,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-quote,
+.hljs-template-tag,
+.hljs-deletion {
+  color: #000000;
+}
+
+.hljs-title,
+.hljs-section {
+  color: #fb2c00;
+}
+
+.hljs-title>.hljs-built_in {
+  color: #008080;
+  font-weight: normal;
+}
+
+.hljs-regexp,
+.hljs-symbol,
+.hljs-variable,
+.hljs-template-variable,
+.hljs-link,
+.hljs-selector-attr,
+.hljs-selector-pseudo {
+  color: #5e1700;
+}
+
+/* Language color: hue: 90; */
+
+.hljs-built_in,
+.hljs-literal {
+  color: #000080;
+  font-weight: bold;
+}
+
+.hljs-bullet,
+.hljs-code,
+.hljs-addition {
+  color: #397300;
+}
+
+.hljs-class  {
+  color: #6f1C00;
+  font-weight: bold;
+}
+
+/* Meta color: hue: 200 */
+
+.hljs-meta {
+  color: #1f7199;
+}
+
+.hljs-meta-string {
+  color: #4d99bf;
+}
+
+
+/* Misc effects */
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/kimbie.dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/kimbie.dark.css
new file mode 100644
index 0000000..d139cb5
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/kimbie.dark.css
@@ -0,0 +1,74 @@
+/*
+    Name:     Kimbie (dark)
+    Author:   Jan T. Sott
+    License:  Creative Commons Attribution-ShareAlike 4.0 Unported License
+    URL:      https://github.com/idleberg/Kimbie-highlight.js
+*/
+
+/* Kimbie Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #d6baad;
+}
+
+/* Kimbie Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-tag,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-regexp,
+.hljs-meta {
+  color: #dc3958;
+}
+
+/* Kimbie Orange */
+.hljs-number,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params,
+.hljs-deletion,
+.hljs-link {
+  color: #f79a32;
+}
+
+/* Kimbie Yellow */
+.hljs-title,
+.hljs-section,
+.hljs-attribute {
+  color: #f06431;
+}
+
+/* Kimbie Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet,
+.hljs-addition {
+  color: #889b4a;
+}
+
+/* Kimbie Purple */
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-function {
+  color: #98676a;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #221a0f;
+  color: #d3af86;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/kimbie.light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/kimbie.light.css
new file mode 100644
index 0000000..04ff6ed
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/kimbie.light.css
@@ -0,0 +1,74 @@
+/*
+    Name:     Kimbie (light)
+    Author:   Jan T. Sott
+    License:  Creative Commons Attribution-ShareAlike 4.0 Unported License
+    URL:      https://github.com/idleberg/Kimbie-highlight.js
+*/
+
+/* Kimbie Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #a57a4c;
+}
+
+/* Kimbie Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-tag,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-regexp,
+.hljs-meta {
+  color: #dc3958;
+}
+
+/* Kimbie Orange */
+.hljs-number,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params,
+.hljs-deletion,
+.hljs-link {
+  color: #f79a32;
+}
+
+/* Kimbie Yellow */
+.hljs-title,
+.hljs-section,
+.hljs-attribute {
+  color: #f06431;
+}
+
+/* Kimbie Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet,
+.hljs-addition {
+  color: #889b4a;
+}
+
+/* Kimbie Purple */
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-function {
+  color: #98676a;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #fbebd4;
+  color: #84613d;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/lightfair.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/lightfair.css
new file mode 100644
index 0000000..a247c8e
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/lightfair.css
@@ -0,0 +1,87 @@
+/*
+
+Lightfair style (c) Tristian Kelly <tristian.kelly560@gmail.com>
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+}
+
+.hljs-name {
+    color:#01a3a3;
+}
+
+.hljs-tag,.hljs-meta {
+    color:#778899;
+}
+
+.hljs,
+.hljs-subst {
+    color: #444
+}
+
+.hljs-comment {
+    color: #888888
+}
+
+.hljs-keyword,
+.hljs-attribute,
+.hljs-selector-tag,
+.hljs-meta-keyword,
+.hljs-doctag,
+.hljs-name {
+    font-weight: bold
+}
+
+.hljs-type,
+.hljs-string,
+.hljs-number,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-quote,
+.hljs-template-tag,
+.hljs-deletion {
+    color: #4286f4
+}
+
+.hljs-title,
+.hljs-section {
+    color: #4286f4;
+    font-weight: bold
+}
+
+.hljs-regexp,
+.hljs-symbol,
+.hljs-variable,
+.hljs-template-variable,
+.hljs-link,
+.hljs-selector-attr,
+.hljs-selector-pseudo {
+    color: #BC6060
+}
+
+.hljs-literal {
+    color: #62bcbc
+}
+
+.hljs-built_in,
+.hljs-bullet,
+.hljs-code,
+.hljs-addition {
+    color: #25c6c6
+}
+
+.hljs-meta-string {
+    color: #4d99bf
+}
+
+.hljs-emphasis {
+    font-style: italic
+}
+
+.hljs-strong {
+    font-weight: bold
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/magula.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/magula.css
index cafe3d3..44dee5e 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/magula.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/magula.css
@@ -1,4 +1,4 @@
-/*
+/*
 Description: Magula style for highligh.js
 Author: Ruslan Keba <rukeba@gmail.com>
 Website: http://rukeba.com/
@@ -8,116 +8,63 @@ Music: Aphex Twin / Xtal
 */
 
 .hljs {
-  display: block; padding: 0.5em;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
   background-color: #f4f4f4;
 }
 
 .hljs,
-.hljs-subst,
-.lisp .hljs-title,
-.clojure .hljs-built_in {
+.hljs-subst {
   color: black;
 }
 
 .hljs-string,
 .hljs-title,
-.hljs-parent,
-.hljs-tag .hljs-value,
-.hljs-rules .hljs-value,
-.hljs-rules .hljs-value .hljs-number,
-.hljs-preprocessor,
-.hljs-pragma,
-.ruby .hljs-symbol,
-.ruby .hljs-symbol .hljs-string,
-.hljs-aggregate,
-.hljs-template_tag,
-.django .hljs-variable,
-.smalltalk .hljs-class,
+.hljs-symbol,
+.hljs-bullet,
+.hljs-attribute,
 .hljs-addition,
-.hljs-flow,
-.hljs-stream,
-.bash .hljs-variable,
-.apache .hljs-cbracket,
-.coffeescript .hljs-attribute {
+.hljs-variable,
+.hljs-template-tag,
+.hljs-template-variable {
   color: #050;
 }
 
 .hljs-comment,
-.hljs-annotation,
-.hljs-template_comment,
-.diff .hljs-header,
-.hljs-chunk {
+.hljs-quote {
   color: #777;
 }
 
 .hljs-number,
-.hljs-date,
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 .hljs-literal,
-.smalltalk .hljs-symbol,
-.smalltalk .hljs-char,
-.hljs-change,
-.tex .hljs-special {
+.hljs-type,
+.hljs-link {
   color: #800;
 }
 
-.hljs-label,
-.hljs-javadoc,
-.ruby .hljs-string,
-.hljs-decorator,
-.hljs-filter .hljs-argument,
-.hljs-localvars,
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-.hljs-shebang,
-.apache .hljs-sqbracket,
-.nginx .hljs-built_in,
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-.hljs-prompt,
-.clojure .hljs-attribute {
+.hljs-meta {
   color: #00e;
 }
 
 .hljs-keyword,
-.hljs-id,
-.hljs-phpdoc,
+.hljs-selector-tag,
+.hljs-doctag,
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+.hljs-section,
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-.hljs-aggregate,
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-.hljs-winutils,
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-.apache .hljs-tag,
-.xml .hljs-tag,
-.tex .hljs-command,
-.hljs-request,
-.hljs-status {
+.hljs-tag,
+.hljs-name {
   font-weight: bold;
   color: navy;
 }
 
-.nginx .hljs-built_in {
-  font-weight: normal;
+.hljs-emphasis {
+  font-style: italic;
 }
 
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
-}
-
-/* --- */
-.apache .hljs-tag {
+.hljs-strong {
   font-weight: bold;
-  color: blue;
 }
-
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/mono-blue.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/mono-blue.css
index 4152d82..884c97c 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/mono-blue.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/mono-blue.css
@@ -2,61 +2,58 @@
   Five-color theme from a single blue hue.
 */
 .hljs {
-  display: block; padding: 0.5em;
-  background: #EAEEF3; color: #00193A;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #eaeef3;
+}
+
+.hljs {
+  color: #00193a;
 }
 
 .hljs-keyword,
+.hljs-selector-tag,
 .hljs-title,
-.hljs-important,
-.hljs-request,
-.hljs-header,
-.hljs-javadoctag {
+.hljs-section,
+.hljs-doctag,
+.hljs-name,
+.hljs-strong {
   font-weight: bold;
 }
 
-.hljs-comment,
-.hljs-chunk,
-.hljs-template_comment {
+.hljs-comment {
   color: #738191;
 }
 
 .hljs-string,
 .hljs-title,
-.hljs-parent,
+.hljs-section,
 .hljs-built_in,
 .hljs-literal,
-.hljs-filename,
-.hljs-value,
+.hljs-type,
 .hljs-addition,
 .hljs-tag,
-.hljs-argument,
-.hljs-link_label,
-.hljs-blockquote,
-.hljs-header {
-  color: #0048AB;
+.hljs-quote,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #0048ab;
 }
 
-.hljs-decorator,
-.hljs-prompt,
-.hljs-yardoctag,
+.hljs-meta,
 .hljs-subst,
 .hljs-symbol,
-.hljs-doctype,
 .hljs-regexp,
-.hljs-preprocessor,
-.hljs-pragma,
-.hljs-pi,
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-.hljs-attr_selector,
-.hljs-javadoc,
-.hljs-xmlDocTag,
 .hljs-deletion,
-.hljs-shebang,
-.hljs-string .hljs-variable,
-.hljs-link_url,
-.hljs-bullet,
-.hljs-sqbracket,
-.hljs-phony {
-  color: #4C81C9;
+.hljs-variable,
+.hljs-template-variable,
+.hljs-link,
+.hljs-bullet {
+  color: #4c81c9;
+}
+
+.hljs-emphasis {
+  font-style: italic;
 }
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/monokai-sublime.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/monokai-sublime.css
new file mode 100644
index 0000000..2864170
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/monokai-sublime.css
@@ -0,0 +1,83 @@
+/*
+
+Monokai Sublime style. Derived from Monokai by noformnocontent http://nn.mit-license.org/
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #23241f;
+}
+
+.hljs,
+.hljs-tag,
+.hljs-subst {
+  color: #f8f8f2;
+}
+
+.hljs-strong,
+.hljs-emphasis {
+  color: #a8a8a2;
+}
+
+.hljs-bullet,
+.hljs-quote,
+.hljs-number,
+.hljs-regexp,
+.hljs-literal,
+.hljs-link {
+  color: #ae81ff;
+}
+
+.hljs-code,
+.hljs-title,
+.hljs-section,
+.hljs-selector-class {
+  color: #a6e22e;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-name,
+.hljs-attr {
+  color: #f92672;
+}
+
+.hljs-symbol,
+.hljs-attribute {
+  color: #66d9ef;
+}
+
+.hljs-params,
+.hljs-class .hljs-title {
+  color: #f8f8f2;
+}
+
+.hljs-string,
+.hljs-type,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-selector-id,
+.hljs-selector-attr,
+.hljs-selector-pseudo,
+.hljs-addition,
+.hljs-variable,
+.hljs-template-variable {
+  color: #e6db74;
+}
+
+.hljs-comment,
+.hljs-deletion,
+.hljs-meta {
+  color: #75715e;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/monokai.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/monokai.css
index 4e49bef..775d53f 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/monokai.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/monokai.css
@@ -3,125 +3,68 @@ Monokai style - ported by Luigi Maselli - http://grigio.org
 */
 
 .hljs {
-  display: block; padding: 0.5em;
-  background: #272822;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #272822; color: #ddd;
 }
 
 .hljs-tag,
-.hljs-tag .hljs-title,
 .hljs-keyword,
+.hljs-selector-tag,
 .hljs-literal,
 .hljs-strong,
-.hljs-change,
-.hljs-winutils,
-.hljs-flow,
-.lisp .hljs-title,
-.clojure .hljs-built_in,
-.nginx .hljs-title,
-.tex .hljs-special {
-  color: #F92672;
+.hljs-name {
+  color: #f92672;
 }
 
-.hljs {
-  color: #DDD;
+.hljs-code {
+  color: #66d9ef;
 }
 
-.hljs .hljs-constant,
-.asciidoc .hljs-code {
-	color: #66D9EF;
+.hljs-class .hljs-title {
+  color: white;
 }
 
-.hljs-code,
-.hljs-class .hljs-title,
-.hljs-header {
-	color: white;
-}
-
-.hljs-link_label,
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-.hljs-symbol .hljs-string,
-.hljs-value,
-.hljs-regexp {
-	color: #BF79DB;
+.hljs-regexp,
+.hljs-link {
+  color: #bf79db;
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-.hljs-link_url,
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-.hljs-prompt {
-  color: #A6E22E;
+.hljs-variable,
+.hljs-template-tag,
+.hljs-template-variable {
+  color: #a6e22e;
 }
 
 .hljs-comment,
-.java .hljs-annotation,
-.smartquote,
-.hljs-blockquote,
-.hljs-horizontal_rule,
-.python .hljs-decorator,
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+.hljs-quote,
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-.hljs-shebang,
-.apache .hljs-sqbracket,
-.tex .hljs-formula {
-  color: #75715E;
+.hljs-meta {
+  color: #75715e;
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+.hljs-selector-tag,
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-.css .hljs-id,
-.hljs-phpdoc,
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-
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
-}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/monokai_sublime.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/monokai_sublime.css
deleted file mode 100644
index 7b0eb2e..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/monokai_sublime.css
+++ /dev/null
@@ -1,149 +0,0 @@
-/*
-
-Monokai Sublime style. Derived from Monokai by noformnocontent http://nn.mit-license.org/
-
-*/
-
-.hljs {
-  display: block;
-  padding: 0.5em;
-  background: #23241f;
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-
-.hljs,
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-  color: #f8f8f2;
-}
-
-.hljs-strongemphasis,
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-
-.hljs-bullet,
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-.xml .php,
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diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/nord.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/nord.css
new file mode 100644
index 0000000..4240384
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/nord.css
@@ -0,0 +1,309 @@
+/*
+ * Copyright (c) 2017-present Arctic Ice Studio <development@arcticicestudio.com>
+ * Copyright (c) 2017-present Sven Greb <development@svengreb.de>
+ *
+ * Project:    Nord highlight.js
+ * Version:    0.1.0
+ * Repository: https://github.com/arcticicestudio/nord-highlightjs
+ * License:    MIT
+ * References:
+ *   https://github.com/arcticicestudio/nord
+ */
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #2E3440;
+}
+
+.hljs,
+.hljs-subst {
+  color: #D8DEE9;
+}
+
+.hljs-selector-tag {
+  color: #81A1C1;
+}
+
+.hljs-selector-id {
+  color: #8FBCBB;
+  font-weight: bold;
+}
+
+.hljs-selector-class {
+  color: #8FBCBB;
+}
+
+.hljs-selector-attr {
+  color: #8FBCBB;
+}
+
+.hljs-selector-pseudo {
+  color: #88C0D0;
+}
+
+.hljs-addition {
+  background-color: rgba(163, 190, 140, 0.5);
+}
+
+.hljs-deletion {
+  background-color: rgba(191, 97, 106, 0.5);
+}
+
+.hljs-built_in,
+.hljs-type {
+  color: #8FBCBB;
+}
+
+.hljs-class {
+  color: #8FBCBB;
+}
+
+.hljs-function {
+  color: #88C0D0;
+}
+
+.hljs-function > .hljs-title {
+  color: #88C0D0;
+}
+
+.hljs-keyword,
+.hljs-literal,
+.hljs-symbol {
+  color: #81A1C1;
+}
+
+.hljs-number {
+  color: #B48EAD;
+}
+
+.hljs-regexp {
+  color: #EBCB8B;
+}
+
+.hljs-string {
+  color: #A3BE8C;
+}
+
+.hljs-title {
+  color: #8FBCBB;
+}
+
+.hljs-params {
+  color: #D8DEE9;
+}
+
+.hljs-bullet {
+  color: #81A1C1;
+}
+
+.hljs-code {
+  color: #8FBCBB;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-formula {
+  color: #8FBCBB;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
+
+.hljs-link:hover {
+  text-decoration: underline;
+}
+
+.hljs-quote {
+  color: #4C566A;
+}
+
+.hljs-comment {
+  color: #4C566A;
+}
+
+.hljs-doctag {
+  color: #8FBCBB;
+}
+
+.hljs-meta,
+.hljs-meta-keyword {
+  color: #5E81AC;
+}
+
+.hljs-meta-string {
+  color: #A3BE8C;
+}
+
+.hljs-attr {
+  color: #8FBCBB;
+}
+
+.hljs-attribute {
+  color: #D8DEE9;
+}
+
+.hljs-builtin-name {
+  color: #81A1C1;
+}
+
+.hljs-name {
+  color: #81A1C1;
+}
+
+.hljs-section {
+  color: #88C0D0;
+}
+
+.hljs-tag {
+  color: #81A1C1;
+}
+
+.hljs-variable {
+  color: #D8DEE9;
+}
+
+.hljs-template-variable {
+  color: #D8DEE9;
+}
+
+.hljs-template-tag {
+  color: #5E81AC;
+}
+
+.abnf .hljs-attribute {
+  color: #88C0D0;
+}
+
+.abnf .hljs-symbol {
+  color: #EBCB8B;
+}
+
+.apache .hljs-attribute {
+  color: #88C0D0;
+}
+
+.apache .hljs-section {
+  color: #81A1C1;
+}
+
+.arduino .hljs-built_in {
+  color: #88C0D0;
+}
+
+.aspectj .hljs-meta {
+  color: #D08770;
+}
+
+.aspectj > .hljs-title {
+  color: #88C0D0;
+}
+
+.bnf .hljs-attribute {
+  color: #8FBCBB;
+}
+
+.clojure .hljs-name {
+  color: #88C0D0;
+}
+
+.clojure .hljs-symbol {
+  color: #EBCB8B;
+}
+
+.coq .hljs-built_in {
+  color: #88C0D0;
+}
+
+.cpp .hljs-meta-string {
+  color: #8FBCBB;
+}
+
+.css .hljs-built_in {
+  color: #88C0D0;
+}
+
+.css .hljs-keyword {
+  color: #D08770;
+}
+
+.diff .hljs-meta {
+  color: #8FBCBB;
+}
+
+.ebnf .hljs-attribute {
+  color: #8FBCBB;
+}
+
+.glsl .hljs-built_in {
+  color: #88C0D0;
+}
+
+.groovy .hljs-meta:not(:first-child) {
+  color: #D08770;
+}
+
+.haxe .hljs-meta {
+  color: #D08770;
+}
+
+.java .hljs-meta {
+  color: #D08770;
+}
+
+.ldif .hljs-attribute {
+  color: #8FBCBB;
+}
+
+.lisp .hljs-name {
+  color: #88C0D0;
+}
+
+.lua .hljs-built_in {
+  color: #88C0D0;
+}
+
+.moonscript .hljs-built_in {
+  color: #88C0D0;
+}
+
+.nginx .hljs-attribute {
+  color: #88C0D0;
+}
+
+.nginx .hljs-section {
+  color: #5E81AC;
+}
+
+.pf .hljs-built_in {
+  color: #88C0D0;
+}
+
+.processing .hljs-built_in {
+  color: #88C0D0;
+}
+
+.scss .hljs-keyword {
+  color: #81A1C1;
+}
+
+.stylus .hljs-keyword {
+  color: #81A1C1;
+}
+
+.swift .hljs-meta {
+  color: #D08770;
+}
+
+.vim .hljs-built_in {
+  color: #88C0D0;
+  font-style: italic;
+}
+
+.yaml .hljs-meta {
+  color: #D08770;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/obsidian.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/obsidian.css
index 1174e4c..356630f 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/obsidian.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/obsidian.css
@@ -4,151 +4,85 @@
  */
 
 .hljs {
-    display: block; padding: 0.5em;
-    background: #282B2E;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #282b2e;
 }
 
 .hljs-keyword,
+.hljs-selector-tag,
 .hljs-literal,
-.hljs-change,
-.hljs-winutils,
-.hljs-flow,
-.lisp .hljs-title,
-.clojure .hljs-built_in,
-.nginx .hljs-title,
-.css .hljs-id,
-.tex .hljs-special {
-    color: #93C763;
+.hljs-selector-id {
+  color: #93c763;
 }
 
 .hljs-number {
-    color: #FFCD22;
+  color: #ffcd22;
 }
 
 .hljs {
-    color: #E0E2E4;
+  color: #e0e2e4;
 }
 
-.css .hljs-tag,
-.css .hljs-pseudo {
-    color: #D0D2B5;
-}
-
-.hljs-attribute,
-.hljs .hljs-constant {
-    color: #668BB0;
-}
-
-.xml .hljs-attribute {
-    color: #B3B689;
-}
-
-.xml .hljs-tag .hljs-value {
-    color: #E8E2B7;
+.hljs-attribute {
+  color: #668bb0;
 }
 
 .hljs-code,
 .hljs-class .hljs-title,
-.hljs-header {
-    color: white;
+.hljs-section {
+  color: white;
 }
 
-.hljs-class,
-.hljs-hexcolor {
-    color: #93C763;
+.hljs-regexp,
+.hljs-link {
+  color: #d39745;
 }
 
-.hljs-regexp {
-    color: #D39745;
+.hljs-meta {
+  color: #557182;
 }
 
-.hljs-at_rule,
-.hljs-at_rule .hljs-keyword {
-    color: #A082BD;
-}
-
-.hljs-doctype {
-    color: #557182;
-}
-
-.hljs-link_url,
 .hljs-tag,
-.hljs-tag .hljs-title,
+.hljs-name,
 .hljs-bullet,
 .hljs-subst,
 .hljs-emphasis,
-.haskell .hljs-type,
-.hljs-preprocessor,
-.hljs-pragma,
-.ruby .hljs-class .hljs-parent,
+.hljs-type,
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-.sql .hljs-aggregate,
-.django .hljs-template_tag,
-.django .hljs-variable,
-.smalltalk .hljs-class,
-.hljs-javadoc,
-.django .hljs-filter .hljs-argument,
-.smalltalk .hljs-localvars,
-.smalltalk .hljs-array,
-.hljs-attr_selector,
-.hljs-pseudo,
+.hljs-selector-attr,
+.hljs-selector-pseudo,
 .hljs-addition,
-.hljs-stream,
-.hljs-envvar,
-.apache .hljs-tag,
-.apache .hljs-cbracket,
-.tex .hljs-command,
-.hljs-prompt {
-    color: #8CBBAD;
+.hljs-variable,
+.hljs-template-tag,
+.hljs-template-variable {
+  color: #8cbbad;
 }
 
-.hljs-string {
-    color: #EC7600;
+.hljs-string,
+.hljs-symbol {
+  color: #ec7600;
 }
 
 .hljs-comment,
-.java .hljs-annotation,
-.hljs-blockquote,
-.hljs-horizontal_rule,
-.python .hljs-decorator,
-.hljs-template_comment,
-.hljs-pi,
-.hljs-deletion,
-.hljs-shebang,
-.apache .hljs-sqbracket,
-.tex .hljs-formula {
-    color: #818E96;
+.hljs-quote,
+.hljs-deletion {
+  color: #818e96;
+}
+
+.hljs-selector-class {
+  color: #A082BD
 }
 
 .hljs-keyword,
+.hljs-selector-tag,
 .hljs-literal,
-.css .hljs-id,
-.hljs-phpdoc,
+.hljs-doctag,
 .hljs-title,
-.hljs-header,
-.haskell .hljs-type,
-.vbscript .hljs-built_in,
-.sql .hljs-aggregate,
-.rsl .hljs-built_in,
-.smalltalk .hljs-class,
-.diff .hljs-header,
-.hljs-chunk,
-.hljs-winutils,
-.bash .hljs-variable,
-.apache .hljs-tag,
-.tex .hljs-special,
-.hljs-request,
-.hljs-at_rule .hljs-keyword,
-.hljs-status {
-    font-weight: bold;
-}
-
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-    opacity: 0.5;
+.hljs-section,
+.hljs-type,
+.hljs-name,
+.hljs-strong {
+  font-weight: bold;
 }
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/ocean.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/ocean.css
new file mode 100644
index 0000000..5901581
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/ocean.css
@@ -0,0 +1,74 @@
+/* Ocean Dark Theme */
+/* https://github.com/gavsiu */
+/* Original theme - https://github.com/chriskempson/base16 */
+
+/* Ocean Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #65737e;
+}
+
+/* Ocean Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-tag,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-regexp,
+.hljs-deletion {
+  color: #bf616a;
+}
+
+/* Ocean Orange */
+.hljs-number,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params,
+.hljs-meta,
+.hljs-link {
+  color: #d08770;
+}
+
+/* Ocean Yellow */
+.hljs-attribute {
+  color: #ebcb8b;
+}
+
+/* Ocean Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet,
+.hljs-addition {
+  color: #a3be8c;
+}
+
+/* Ocean Blue */
+.hljs-title,
+.hljs-section {
+  color: #8fa1b3;
+}
+
+/* Ocean Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #b48ead;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #2b303b;
+  color: #c0c5ce;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/paraiso-dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/paraiso-dark.css
new file mode 100644
index 0000000..e729240
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/paraiso-dark.css
@@ -0,0 +1,72 @@
+/*
+    Paraíso (dark)
+    Created by Jan T. Sott (http://github.com/idleberg)
+    Inspired by the art of Rubens LP (http://www.rubenslp.com.br)
+*/
+
+/* Paraíso Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #8d8687;
+}
+
+/* Paraíso Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-tag,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-regexp,
+.hljs-link,
+.hljs-meta {
+  color: #ef6155;
+}
+
+/* Paraíso Orange */
+.hljs-number,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params,
+.hljs-deletion {
+  color: #f99b15;
+}
+
+/* Paraíso Yellow */
+.hljs-title,
+.hljs-section,
+.hljs-attribute {
+  color: #fec418;
+}
+
+/* Paraíso Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet,
+.hljs-addition {
+  color: #48b685;
+}
+
+/* Paraíso Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #815ba4;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #2f1e2e;
+  color: #a39e9b;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/paraiso-light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/paraiso-light.css
new file mode 100644
index 0000000..944857c
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/paraiso-light.css
@@ -0,0 +1,72 @@
+/*
+    Paraíso (light)
+    Created by Jan T. Sott (http://github.com/idleberg)
+    Inspired by the art of Rubens LP (http://www.rubenslp.com.br)
+*/
+
+/* Paraíso Comment */
+.hljs-comment,
+.hljs-quote {
+  color: #776e71;
+}
+
+/* Paraíso Red */
+.hljs-variable,
+.hljs-template-variable,
+.hljs-tag,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-regexp,
+.hljs-link,
+.hljs-meta {
+  color: #ef6155;
+}
+
+/* Paraíso Orange */
+.hljs-number,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-literal,
+.hljs-type,
+.hljs-params,
+.hljs-deletion {
+  color: #f99b15;
+}
+
+/* Paraíso Yellow */
+.hljs-title,
+.hljs-section,
+.hljs-attribute {
+  color: #fec418;
+}
+
+/* Paraíso Green */
+.hljs-string,
+.hljs-symbol,
+.hljs-bullet,
+.hljs-addition {
+  color: #48b685;
+}
+
+/* Paraíso Purple */
+.hljs-keyword,
+.hljs-selector-tag {
+  color: #815ba4;
+}
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  background: #e7e9db;
+  color: #4f424c;
+  padding: 0.5em;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/paraiso.dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/paraiso.dark.css
deleted file mode 100644
index bbbccdd..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/paraiso.dark.css
+++ /dev/null
@@ -1,93 +0,0 @@
-/*
-    Paraíso (dark)
-    Created by Jan T. Sott (http://github.com/idleberg)
-    Inspired by the art of Rubens LP (http://www.rubenslp.com.br)
-*/
-
-/* Paraíso Comment */
-.hljs-comment,
-.hljs-title {
-  color: #8d8687;
-}
-
-/* Paraíso Red */
-.hljs-variable,
-.hljs-attribute,
-.hljs-tag,
-.hljs-regexp,
-.ruby .hljs-constant,
-.xml .hljs-tag .hljs-title,
-.xml .hljs-pi,
-.xml .hljs-doctype,
-.html .hljs-doctype,
-.css .hljs-id,
-.css .hljs-class,
-.css .hljs-pseudo {
-  color: #ef6155;
-}
-
-/* Paraíso Orange */
-.hljs-number,
-.hljs-preprocessor,
-.hljs-built_in,
-.hljs-literal,
-.hljs-params,
-.hljs-constant {
-  color: #f99b15;
-}
-
-/* Paraíso Yellow */
-.ruby .hljs-class .hljs-title,
-.css .hljs-rules .hljs-attribute {
-  color: #fec418;
-}
-
-/* Paraíso Green */
-.hljs-string,
-.hljs-value,
-.hljs-inheritance,
-.hljs-header,
-.ruby .hljs-symbol,
-.xml .hljs-cdata {
-  color: #48b685;
-}
-
-/* Paraíso Aqua */
-.css .hljs-hexcolor {
-  color: #5bc4bf;
-}
-
-/* Paraíso Blue */
-.hljs-function,
-.python .hljs-decorator,
-.python .hljs-title,
-.ruby .hljs-function .hljs-title,
-.ruby .hljs-title .hljs-keyword,
-.perl .hljs-sub,
-.javascript .hljs-title,
-.coffeescript .hljs-title {
-  color: #06b6ef;
-}
-
-/* Paraíso Purple */
-.hljs-keyword,
-.javascript .hljs-function {
-  color: #815ba4;
-}
-
-.hljs {
-  display: block;
-  background: #2f1e2e;
-  color: #a39e9b;
-  padding: 0.5em;
-}
-
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
-}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/paraiso.light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/paraiso.light.css
deleted file mode 100644
index 494fcb4..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/paraiso.light.css
+++ /dev/null
@@ -1,93 +0,0 @@
-/*
-    Paraíso (light)
-    Created by Jan T. Sott (http://github.com/idleberg)
-    Inspired by the art of Rubens LP (http://www.rubenslp.com.br)
-*/
-
-/* Paraíso Comment */
-.hljs-comment,
-.hljs-title {
-  color: #776e71;
-}
-
-/* Paraíso Red */
-.hljs-variable,
-.hljs-attribute,
-.hljs-tag,
-.hljs-regexp,
-.ruby .hljs-constant,
-.xml .hljs-tag .hljs-title,
-.xml .hljs-pi,
-.xml .hljs-doctype,
-.html .hljs-doctype,
-.css .hljs-id,
-.css .hljs-class,
-.css .hljs-pseudo {
-  color: #ef6155;
-}
-
-/* Paraíso Orange */
-.hljs-number,
-.hljs-preprocessor,
-.hljs-built_in,
-.hljs-literal,
-.hljs-params,
-.hljs-constant {
-  color: #f99b15;
-}
-
-/* Paraíso Yellow */
-.ruby .hljs-class .hljs-title,
-.css .hljs-rules .hljs-attribute {
-  color: #fec418;
-}
-
-/* Paraíso Green */
-.hljs-string,
-.hljs-value,
-.hljs-inheritance,
-.hljs-header,
-.ruby .hljs-symbol,
-.xml .hljs-cdata {
-  color: #48b685;
-}
-
-/* Paraíso Aqua */
-.css .hljs-hexcolor {
-  color: #5bc4bf;
-}
-
-/* Paraíso Blue */
-.hljs-function,
-.python .hljs-decorator,
-.python .hljs-title,
-.ruby .hljs-function .hljs-title,
-.ruby .hljs-title .hljs-keyword,
-.perl .hljs-sub,
-.javascript .hljs-title,
-.coffeescript .hljs-title {
-  color: #06b6ef;
-}
-
-/* Paraíso Purple */
-.hljs-keyword,
-.javascript .hljs-function {
-  color: #815ba4;
-}
-
-.hljs {
-  display: block;
-  background: #e7e9db;
-  color: #4f424c;
-  padding: 0.5em;
-}
-
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
-}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/pojoaque.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/pojoaque.css
index 6ee925d..2e07847 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/pojoaque.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/pojoaque.css
@@ -7,93 +7,57 @@ Based on Solarized Style from http://ethanschoonover.com/solarized
 */
 
 .hljs {
-  display: block; padding: 0.5em;
-  color: #DCCF8F;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  color: #dccf8f;
   background: url(./pojoaque.jpg) repeat scroll left top #181914;
 }
 
 .hljs-comment,
-.hljs-template_comment,
-.diff .hljs-header,
-.hljs-doctype,
-.lisp .hljs-string,
-.hljs-javadoc {
+.hljs-quote {
   color: #586e75;
   font-style: italic;
 }
 
 .hljs-keyword,
-.css .rule .hljs-keyword,
-.hljs-winutils,
-.javascript .hljs-title,
-.method,
-.hljs-addition,
-.css .hljs-tag,
-.clojure .hljs-title,
-.nginx .hljs-title {
-  color: #B64926;
+.hljs-selector-tag,
+.hljs-literal,
+.hljs-addition {
+  color: #b64926;
 }
 
 .hljs-number,
-.hljs-command,
 .hljs-string,
-.hljs-tag .hljs-value,
-.hljs-phpdoc,
-.tex .hljs-formula,
-.hljs-regexp,
-.hljs-hexcolor {
+.hljs-doctag,
+.hljs-regexp {
   color: #468966;
 }
 
 .hljs-title,
-.hljs-localvars,
-.hljs-function .hljs-title,
-.hljs-chunk,
-.hljs-decorator,
+.hljs-section,
 .hljs-built_in,
-.lisp .hljs-title,
-.clojure .hljs-built_in,
-.hljs-identifier,
-.hljs-id {
-  color: #FFB03B;
+.hljs-name {
+  color: #ffb03b;
 }
 
-.hljs-attribute,
 .hljs-variable,
-.lisp .hljs-body,
-.smalltalk .hljs-number,
-.hljs-constant,
+.hljs-template-variable,
 .hljs-class .hljs-title,
-.hljs-parent,
-.haskell .hljs-type {
+.hljs-type,
+.hljs-tag {
   color: #b58900;
 }
 
-.css .hljs-attribute {
+.hljs-attribute {
   color: #b89859;
 }
 
-.css .hljs-number,
-.css .hljs-hexcolor {
-  color: #DCCF8F;
-}
-
-.css .hljs-class {
-  color: #d3a60c;
-}
-
-.hljs-preprocessor,
-.hljs-pragma,
-.hljs-pi,
-.hljs-shebang,
 .hljs-symbol,
-.hljs-symbol .hljs-string,
-.diff .hljs-change,
-.hljs-special,
-.hljs-attr_selector,
-.hljs-important,
+.hljs-bullet,
+.hljs-link,
 .hljs-subst,
-.hljs-cdata {
+.hljs-meta {
   color: #cb4b16;
 }
 
@@ -101,6 +65,19 @@ Based on Solarized Style from http://ethanschoonover.com/solarized
   color: #dc322f;
 }
 
-.tex .hljs-formula {
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #d3a60c;
+}
+
+.hljs-formula {
   background: #073642;
 }
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/purebasic.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/purebasic.css
new file mode 100644
index 0000000..5ce9b9e
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/purebasic.css
@@ -0,0 +1,96 @@
+/*
+
+PureBASIC native IDE style ( version 1.0 - April 2016 )
+
+by Tristano Ajmone <tajmone@gmail.com>
+
+Public Domain
+
+NOTE_1:	PureBASIC code syntax highlighting only applies the following classes:
+			.hljs-comment
+			.hljs-function
+			.hljs-keywords
+			.hljs-string
+			.hljs-symbol
+
+		Other classes are added here for the benefit of styling other languages with the look and feel of PureBASIC native IDE style.
+		If you need to customize a stylesheet for PureBASIC only, remove all non-relevant classes -- PureBASIC-related classes are followed by
+		a "--- used for PureBASIC ... ---" comment on same line.
+
+NOTE_2:	Color names provided in comments were derived using "Name that Color" online tool:
+			http://chir.ag/projects/name-that-color
+*/
+
+.hljs { /* Common set of rules required by highlight.js (don'r remove!) */
+	display: block;
+	overflow-x: auto;
+	padding: 0.5em;
+	background: #FFFFDF; /* Half and Half (approx.) */
+/* --- Uncomment to add PureBASIC native IDE styled font!
+	font-family: Consolas;
+*/
+}
+
+.hljs, /* --- used for PureBASIC base color --- */
+.hljs-type,  /* --- used for PureBASIC Procedures return type --- */
+.hljs-function, /* --- used for wrapping PureBASIC Procedures definitions --- */
+.hljs-name,
+.hljs-number,
+.hljs-attr,
+.hljs-params,
+.hljs-subst {
+	color: #000000; /* Black */
+}
+
+.hljs-comment, /* --- used for PureBASIC Comments --- */
+.hljs-regexp,
+.hljs-section,
+.hljs-selector-pseudo,
+.hljs-addition {
+	color: #00AAAA; /* Persian Green (approx.) */
+}
+
+.hljs-title, /* --- used for PureBASIC Procedures Names --- */
+.hljs-tag,
+.hljs-variable,
+.hljs-code  {
+	color: #006666; /* Blue Stone (approx.) */
+}
+
+.hljs-keyword, /* --- used for PureBASIC Keywords --- */
+.hljs-class,
+.hljs-meta-keyword,
+.hljs-selector-class,
+.hljs-built_in,
+.hljs-builtin-name {
+	color: #006666; /* Blue Stone (approx.) */
+	font-weight: bold;
+}
+
+.hljs-string, /* --- used for PureBASIC Strings --- */
+.hljs-selector-attr {
+	color: #0080FF; /* Azure Radiance (approx.) */
+}
+
+.hljs-symbol, /* --- used for PureBASIC Constants --- */
+.hljs-link,
+.hljs-deletion,
+.hljs-attribute {
+	color: #924B72; /* Cannon Pink (approx.) */
+}
+
+.hljs-meta,
+.hljs-literal,
+.hljs-selector-id {
+	color: #924B72; /* Cannon Pink (approx.) */
+	font-weight: bold;
+}
+
+.hljs-strong,
+.hljs-name {
+	font-weight: bold;
+}
+
+.hljs-emphasis {
+	font-style: italic;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/qtcreator_dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/qtcreator_dark.css
new file mode 100644
index 0000000..7aa56a3
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/qtcreator_dark.css
@@ -0,0 +1,83 @@
+/*
+
+Qt Creator dark color scheme
+
+*/
+
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #000000;
+}
+
+.hljs,
+.hljs-subst,
+.hljs-tag,
+.hljs-title {
+  color: #aaaaaa;
+}
+
+.hljs-strong,
+.hljs-emphasis {
+  color: #a8a8a2;
+}
+
+.hljs-bullet,
+.hljs-quote,
+.hljs-number,
+.hljs-regexp,
+.hljs-literal {
+  color: #ff55ff;
+}
+
+.hljs-code
+.hljs-selector-class {
+  color: #aaaaff;
+}
+
+.hljs-emphasis,
+.hljs-stronge,
+.hljs-type {
+  font-style: italic;
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-function,
+.hljs-section,
+.hljs-symbol,
+.hljs-name {
+  color: #ffff55;
+}
+
+.hljs-attribute {
+  color: #ff5555;
+}
+
+.hljs-variable,
+.hljs-params,
+.hljs-class .hljs-title {
+  color: #8888ff;
+}
+
+.hljs-string,
+.hljs-selector-id,
+.hljs-selector-attr,
+.hljs-selector-pseudo,
+.hljs-type,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-template-tag,
+.hljs-template-variable,
+.hljs-addition,
+.hljs-link {
+  color: #ff55ff;
+}
+
+.hljs-comment,
+.hljs-meta,
+.hljs-deletion {
+  color: #55ffff;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/qtcreator_light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/qtcreator_light.css
new file mode 100644
index 0000000..1efa2c6
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/qtcreator_light.css
@@ -0,0 +1,83 @@
+/*
+
+Qt Creator light color scheme
+
+*/
+
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #ffffff;
+}
+
+.hljs,
+.hljs-subst,
+.hljs-tag,
+.hljs-title {
+  color: #000000;
+}
+
+.hljs-strong,
+.hljs-emphasis {
+  color: #000000;
+}
+
+.hljs-bullet,
+.hljs-quote,
+.hljs-number,
+.hljs-regexp,
+.hljs-literal {
+  color: #000080;
+}
+
+.hljs-code
+.hljs-selector-class {
+  color: #800080;
+}
+
+.hljs-emphasis,
+.hljs-stronge,
+.hljs-type {
+  font-style: italic;
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-function,
+.hljs-section,
+.hljs-symbol,
+.hljs-name {
+  color: #808000;
+}
+
+.hljs-attribute {
+  color: #800000;
+}
+
+.hljs-variable,
+.hljs-params,
+.hljs-class .hljs-title {
+  color: #0055AF;
+}
+
+.hljs-string,
+.hljs-selector-id,
+.hljs-selector-attr,
+.hljs-selector-pseudo,
+.hljs-type,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-template-tag,
+.hljs-template-variable,
+.hljs-addition,
+.hljs-link {
+  color: #008000;
+}
+
+.hljs-comment,
+.hljs-meta,
+.hljs-deletion {
+  color: #008000;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/railscasts.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/railscasts.css
index 6a38064..008cdc5 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/railscasts.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/railscasts.css
@@ -6,177 +6,101 @@ Railscasts-like style (c) Visoft, Inc. (Damien White)
 
 .hljs {
   display: block;
+  overflow-x: auto;
   padding: 0.5em;
   background: #232323;
-  color: #E6E1DC;
+  color: #e6e1dc;
 }
 
 .hljs-comment,
-.hljs-template_comment,
-.hljs-javadoc,
-.hljs-shebang {
-  color: #BC9458;
+.hljs-quote {
+  color: #bc9458;
   font-style: italic;
 }
 
 .hljs-keyword,
-.ruby .hljs-function .hljs-keyword,
-.hljs-request,
-.hljs-status,
-.nginx .hljs-title,
-.method,
-.hljs-list .hljs-title {
-  color: #C26230;
+.hljs-selector-tag {
+  color: #c26230;
 }
 
 .hljs-string,
 .hljs-number,
 .hljs-regexp,
-.hljs-tag .hljs-value,
-.hljs-cdata,
-.hljs-filter .hljs-argument,
-.hljs-attr_selector,
-.apache .hljs-cbracket,
-.hljs-date,
-.tex .hljs-command,
-.markdown .hljs-link_label {
-  color: #A5C261;
+.hljs-variable,
+.hljs-template-variable {
+  color: #a5c261;
 }
 
 .hljs-subst {
-  color: #519F50;
+  color: #519f50;
 }
 
 .hljs-tag,
-.hljs-tag .hljs-keyword,
-.hljs-tag .hljs-title,
-.hljs-doctype,
-.hljs-sub .hljs-identifier,
-.hljs-pi,
-.input_number {
-  color: #E8BF6A;
+.hljs-name {
+  color: #e8bf6a;
 }
 
-.hljs-identifier {
-  color: #D0D0FF;
-}
-
-.hljs-class .hljs-title,
-.haskell .hljs-type,
-.smalltalk .hljs-class,
-.hljs-javadoctag,
-.hljs-yardoctag,
-.hljs-phpdoc {
-  text-decoration: none;
-}
-
-.hljs-constant {
-  color: #DA4939;
+.hljs-type {
+  color: #da4939;
 }
 
 
 .hljs-symbol,
+.hljs-bullet,
 .hljs-built_in,
-.ruby .hljs-symbol .hljs-string,
-.ruby .hljs-symbol .hljs-identifier,
-.markdown .hljs-link_url,
+.hljs-builtin-name,
+.hljs-attr,
+.hljs-link {
+  color: #6d9cbe;
+}
+
+.hljs-params {
+  color: #d0d0ff;
+}
+
 .hljs-attribute {
-  color: #6D9CBE;
+  color: #cda869;
 }
 
-.markdown .hljs-link_url {
-  text-decoration: underline;
-}
-
-
-
-.hljs-params,
-.hljs-variable,
-.clojure .hljs-attribute {
-  color: #D0D0FF;
-}
-
-.css .hljs-tag,
-.hljs-rules .hljs-property,
-.hljs-pseudo,
-.tex .hljs-special {
-  color: #CDA869;
-}
-
-.css .hljs-class {
-  color: #9B703F;
-}
-
-.hljs-rules .hljs-keyword {
-  color: #C5AF75;
-}
-
-.hljs-rules .hljs-value {
-  color: #CF6A4C;
-}
-
-.css .hljs-id {
-  color: #8B98AB;
-}
-
-.hljs-annotation,
-.apache .hljs-sqbracket,
-.nginx .hljs-built_in {
-  color: #9B859D;
-}
-
-.hljs-preprocessor,
-.hljs-preprocessor *,
-.hljs-pragma {
-  color: #8996A8 !important;
-}
-
-.hljs-hexcolor,
-.css .hljs-value .hljs-number {
-  color: #A5C261;
+.hljs-meta {
+  color: #9b859d;
 }
 
 .hljs-title,
-.hljs-decorator,
-.css .hljs-function {
-  color: #FFC66D;
-}
-
-.diff .hljs-header,
-.hljs-chunk {
-  background-color: #2F33AB;
-  color: #E6E1DC;
-  display: inline-block;
-  width: 100%;
-}
-
-.diff .hljs-change {
-  background-color: #4A410D;
-  color: #F8F8F8;
-  display: inline-block;
-  width: 100%;
+.hljs-section {
+  color: #ffc66d;
 }
 
 .hljs-addition {
   background-color: #144212;
-  color: #E6E1DC;
+  color: #e6e1dc;
   display: inline-block;
   width: 100%;
 }
 
 .hljs-deletion {
   background-color: #600;
-  color: #E6E1DC;
+  color: #e6e1dc;
   display: inline-block;
   width: 100%;
 }
 
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.7;
+.hljs-selector-class {
+  color: #9b703f;
+}
+
+.hljs-selector-id {
+  color: #8b98ab;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
+
+.hljs-link {
+  text-decoration: underline;
 }
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/rainbow.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/rainbow.css
index d9ffef6..905eb8e 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/rainbow.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/rainbow.css
@@ -5,101 +5,65 @@ Style with support for rainbow parens
 */
 
 .hljs {
-  display: block; padding: 0.5em;
-  background: #474949; color: #D1D9E1;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #474949;
+  color: #d1d9e1;
 }
 
 
-.hljs-body,
-.hljs-collection {
-   color: #D1D9E1;
-}
-
 .hljs-comment,
-.hljs-template_comment,
-.diff .hljs-header,
-.hljs-doctype,
-.lisp .hljs-string,
-.hljs-javadoc {
+.hljs-quote {
   color: #969896;
   font-style: italic;
 }
 
 .hljs-keyword,
-.clojure .hljs-attribute,
-.hljs-winutils,
-.javascript .hljs-title,
-.hljs-addition,
-.css .hljs-tag {
+.hljs-selector-tag,
+.hljs-literal,
+.hljs-type,
+.hljs-addition {
   color: #cc99cc;
 }
 
-.hljs-number { color: #f99157; }
+.hljs-number,
+.hljs-selector-attr,
+.hljs-selector-pseudo {
+  color: #f99157;
+}
 
-.hljs-command,
 .hljs-string,
-.hljs-tag .hljs-value,
-.hljs-phpdoc,
-.tex .hljs-formula,
-.hljs-regexp,
-.hljs-hexcolor {
+.hljs-doctag,
+.hljs-regexp {
   color: #8abeb7;
 }
 
 .hljs-title,
-.hljs-localvars,
-.hljs-function .hljs-title,
-.hljs-chunk,
-.hljs-decorator,
-.hljs-built_in,
-.lisp .hljs-title,
-.hljs-identifier
-{
+.hljs-name,
+.hljs-section,
+.hljs-built_in {
   color: #b5bd68;
 }
 
-.hljs-class .hljs-keyword
-{
-  color: #f2777a;
-}
-
 .hljs-variable,
-.lisp .hljs-body,
-.smalltalk .hljs-number,
-.hljs-constant,
-.hljs-class .hljs-title,
-.hljs-parent,
-.haskell .hljs-label,
-.hljs-id,
-.lisp .hljs-title,
-.clojure .hljs-title .hljs-built_in {
+.hljs-template-variable,
+.hljs-selector-id,
+.hljs-class .hljs-title {
    color: #ffcc66;
 }
 
-.hljs-tag .hljs-title,
-.hljs-rules .hljs-property,
-.django .hljs-tag .hljs-keyword,
-.clojure .hljs-title .hljs-built_in {
+.hljs-section,
+.hljs-name,
+.hljs-strong {
   font-weight: bold;
 }
 
-.hljs-attribute,
-.clojure .hljs-title {
-  color: #81a2be;
-}
-
-.hljs-preprocessor,
-.hljs-pragma,
-.hljs-pi,
-.hljs-shebang,
 .hljs-symbol,
-.hljs-symbol .hljs-string,
-.diff .hljs-change,
-.hljs-special,
-.hljs-attr_selector,
-.hljs-important,
+.hljs-bullet,
 .hljs-subst,
-.hljs-cdata {
+.hljs-meta,
+.hljs-link {
   color: #f99157;
 }
 
@@ -107,6 +71,15 @@ Style with support for rainbow parens
   color: #dc322f;
 }
 
-.tex .hljs-formula {
+.hljs-formula {
   background: #eee8d5;
 }
+
+.hljs-attr,
+.hljs-attribute {
+  color: #81a2be;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/routeros.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/routeros.css
new file mode 100644
index 0000000..ebe2399
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/routeros.css
@@ -0,0 +1,108 @@
+/*
+
+ highlight.js style for Microtik RouterOS script
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #F0F0F0;
+}
+
+/* Base color: saturation 0; */
+
+.hljs,
+.hljs-subst {
+  color: #444;
+}
+
+.hljs-comment {
+  color: #888888;
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-meta-keyword,
+.hljs-doctag,
+.hljs-name {
+  font-weight: bold;
+}
+
+.hljs-attribute {
+  color: #0E9A00;
+}    
+
+.hljs-function {
+  color: #99069A;
+}
+
+.hljs-builtin-name {
+  color: #99069A;
+}
+
+/* User color: hue: 0 */
+
+.hljs-type,
+.hljs-string,
+.hljs-number,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-quote,
+.hljs-template-tag,
+.hljs-deletion {
+  color: #880000;
+}
+
+.hljs-title,
+.hljs-section {
+  color: #880000;
+  font-weight: bold;
+}
+
+.hljs-regexp,
+.hljs-symbol,
+.hljs-variable,
+.hljs-template-variable,
+.hljs-link,
+.hljs-selector-attr,
+.hljs-selector-pseudo {
+  color: #BC6060;
+}
+
+
+/* Language color: hue: 90; */
+
+.hljs-literal {
+  color: #78A960;
+}
+
+.hljs-built_in,
+.hljs-bullet,
+.hljs-code,
+.hljs-addition {
+  color: #0C9A9A;
+}
+
+
+/* Meta color: hue: 200 */
+
+.hljs-meta {
+  color: #1f7199;
+}
+
+.hljs-meta-string {
+  color: #4d99bf;
+}
+
+
+/* Misc effects */
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/school-book.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/school-book.css
new file mode 100644
index 0000000..964b51d
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/school-book.css
@@ -0,0 +1,72 @@
+/*
+
+School Book style from goldblog.com.ua (c) Zaripov Yura <yur4ik7@ukr.net>
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 15px 0.5em 0.5em 30px;
+  font-size: 11px;
+  line-height:16px;
+}
+
+pre{
+  background:#f6f6ae url(./school-book.png);
+  border-top: solid 2px #d2e8b9;
+  border-bottom: solid 1px #d2e8b9;
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-literal {
+  color:#005599;
+  font-weight:bold;
+}
+
+.hljs,
+.hljs-subst {
+  color: #3e5915;
+}
+
+.hljs-string,
+.hljs-title,
+.hljs-section,
+.hljs-type,
+.hljs-symbol,
+.hljs-bullet,
+.hljs-attribute,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-addition,
+.hljs-variable,
+.hljs-template-tag,
+.hljs-template-variable,
+.hljs-link {
+  color: #2c009f;
+}
+
+.hljs-comment,
+.hljs-quote,
+.hljs-deletion,
+.hljs-meta {
+  color: #e60415;
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-literal,
+.hljs-doctag,
+.hljs-title,
+.hljs-section,
+.hljs-type,
+.hljs-name,
+.hljs-selector-id,
+.hljs-strong {
+  font-weight: bold;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/school_book.png b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/school-book.png
similarity index 100%
rename from plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/school_book.png
rename to plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/school-book.png
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/school_book.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/school_book.css
deleted file mode 100644
index 98a3bd2..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/school_book.css
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
-
-School Book style from goldblog.com.ua (c) Zaripov Yura <yur4ik7@ukr.net>
-
-*/
-
-.hljs {
-  display: block; padding: 15px 0.5em 0.5em 30px;
-  font-size: 11px !important;
-  line-height:16px !important;
-}
-
-pre{
-  background:#f6f6ae url(./school_book.png);
-  border-top: solid 2px #d2e8b9;
-  border-bottom: solid 1px #d2e8b9;
-}
-
-.hljs-keyword,
-.hljs-literal,
-.hljs-change,
-.hljs-winutils,
-.hljs-flow,
-.lisp .hljs-title,
-.clojure .hljs-built_in,
-.nginx .hljs-title,
-.tex .hljs-special {
-  color:#005599;
-  font-weight:bold;
-}
-
-.hljs,
-.hljs-subst,
-.hljs-tag .hljs-keyword {
-  color: #3E5915;
-}
-
-.hljs-string,
-.hljs-title,
-.haskell .hljs-type,
-.hljs-tag .hljs-value,
-.css .hljs-rules .hljs-value,
-.hljs-preprocessor,
-.hljs-pragma,
-.ruby .hljs-symbol,
-.ruby .hljs-symbol .hljs-string,
-.ruby .hljs-class .hljs-parent,
-.hljs-built_in,
-.sql .hljs-aggregate,
-.django .hljs-template_tag,
-.django .hljs-variable,
-.smalltalk .hljs-class,
-.hljs-javadoc,
-.ruby .hljs-string,
-.django .hljs-filter .hljs-argument,
-.smalltalk .hljs-localvars,
-.smalltalk .hljs-array,
-.hljs-attr_selector,
-.hljs-pseudo,
-.hljs-addition,
-.hljs-stream,
-.hljs-envvar,
-.apache .hljs-tag,
-.apache .hljs-cbracket,
-.nginx .hljs-built_in,
-.tex .hljs-command,
-.coffeescript .hljs-attribute {
-  color: #2C009F;
-}
-
-.hljs-comment,
-.java .hljs-annotation,
-.python .hljs-decorator,
-.hljs-template_comment,
-.hljs-pi,
-.hljs-doctype,
-.hljs-deletion,
-.hljs-shebang,
-.apache .hljs-sqbracket {
-  color: #E60415;
-}
-
-.hljs-keyword,
-.hljs-literal,
-.css .hljs-id,
-.hljs-phpdoc,
-.hljs-title,
-.haskell .hljs-type,
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-.sql .hljs-aggregate,
-.rsl .hljs-built_in,
-.smalltalk .hljs-class,
-.xml .hljs-tag .hljs-title,
-.diff .hljs-header,
-.hljs-chunk,
-.hljs-winutils,
-.bash .hljs-variable,
-.apache .hljs-tag,
-.tex .hljs-command,
-.hljs-request,
-.hljs-status {
-  font-weight: bold;
-}
-
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
-}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/shades-of-purple.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/shades-of-purple.css
new file mode 100644
index 0000000..c0e899e
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/shades-of-purple.css
@@ -0,0 +1,97 @@
+/**
+ * Shades of Purple Theme — for Highlightjs.
+ *
+ * @author (c) Ahmad Awais <https://twitter.com/mrahmadawais/>
+ * @link GitHub Repo → https://github.com/ahmadawais/Shades-of-Purple-HighlightJS
+ * @version 1.5.0
+ */
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  /* Custom font is optional */
+  /* font-family: 'Operator Mono', 'Fira Code', 'Menlo', 'Monaco', 'Courier New', 'monospace';  */
+  line-height: 1.45;
+  padding: 2rem;
+  background: #2d2b57;
+  font-weight: normal;
+}
+
+.hljs-title {
+  color: #fad000;
+  font-weight: normal;
+}
+
+.hljs-name {
+  color: #a1feff;
+}
+
+.hljs-tag {
+  color: #ffffff;
+}
+
+.hljs-attr {
+  color: #f8d000;
+  font-style: italic;
+}
+
+.hljs-built_in,
+.hljs-selector-tag,
+.hljs-section {
+  color: #fb9e00;
+}
+
+.hljs-keyword {
+  color: #fb9e00;
+}
+
+.hljs,
+.hljs-subst {
+  color: #e3dfff;
+}
+
+.hljs-string,
+.hljs-attribute,
+.hljs-symbol,
+.hljs-bullet,
+.hljs-addition,
+.hljs-code,
+.hljs-regexp,
+.hljs-selector-class,
+.hljs-selector-attr,
+.hljs-selector-pseudo,
+.hljs-template-tag,
+.hljs-quote,
+.hljs-deletion {
+  color: #4cd213;
+}
+
+.hljs-meta,
+.hljs-meta-string {
+  color: #fb9e00;
+}
+
+.hljs-comment {
+  color: #ac65ff;
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-literal,
+.hljs-name,
+.hljs-strong {
+  font-weight: normal;
+}
+
+.hljs-literal,
+.hljs-number {
+  color: #fa658d;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/solarized-dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/solarized-dark.css
new file mode 100644
index 0000000..b4c0da1
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/solarized-dark.css
@@ -0,0 +1,84 @@
+/*
+
+Orginal Style from ethanschoonover.com/solarized (c) Jeremy Hull <sourdrums@gmail.com>
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #002b36;
+  color: #839496;
+}
+
+.hljs-comment,
+.hljs-quote {
+  color: #586e75;
+}
+
+/* Solarized Green */
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-addition {
+  color: #859900;
+}
+
+/* Solarized Cyan */
+.hljs-number,
+.hljs-string,
+.hljs-meta .hljs-meta-string,
+.hljs-literal,
+.hljs-doctag,
+.hljs-regexp {
+  color: #2aa198;
+}
+
+/* Solarized Blue */
+.hljs-title,
+.hljs-section,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #268bd2;
+}
+
+/* Solarized Yellow */
+.hljs-attribute,
+.hljs-attr,
+.hljs-variable,
+.hljs-template-variable,
+.hljs-class .hljs-title,
+.hljs-type {
+  color: #b58900;
+}
+
+/* Solarized Orange */
+.hljs-symbol,
+.hljs-bullet,
+.hljs-subst,
+.hljs-meta,
+.hljs-meta .hljs-keyword,
+.hljs-selector-attr,
+.hljs-selector-pseudo,
+.hljs-link {
+  color: #cb4b16;
+}
+
+/* Solarized Red */
+.hljs-built_in,
+.hljs-deletion {
+  color: #dc322f;
+}
+
+.hljs-formula {
+  background: #073642;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/solarized-light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/solarized-light.css
new file mode 100644
index 0000000..fdcfcc7
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/solarized-light.css
@@ -0,0 +1,84 @@
+/*
+
+Orginal Style from ethanschoonover.com/solarized (c) Jeremy Hull <sourdrums@gmail.com>
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #fdf6e3;
+  color: #657b83;
+}
+
+.hljs-comment,
+.hljs-quote {
+  color: #93a1a1;
+}
+
+/* Solarized Green */
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-addition {
+  color: #859900;
+}
+
+/* Solarized Cyan */
+.hljs-number,
+.hljs-string,
+.hljs-meta .hljs-meta-string,
+.hljs-literal,
+.hljs-doctag,
+.hljs-regexp {
+  color: #2aa198;
+}
+
+/* Solarized Blue */
+.hljs-title,
+.hljs-section,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #268bd2;
+}
+
+/* Solarized Yellow */
+.hljs-attribute,
+.hljs-attr,
+.hljs-variable,
+.hljs-template-variable,
+.hljs-class .hljs-title,
+.hljs-type {
+  color: #b58900;
+}
+
+/* Solarized Orange */
+.hljs-symbol,
+.hljs-bullet,
+.hljs-subst,
+.hljs-meta,
+.hljs-meta .hljs-keyword,
+.hljs-selector-attr,
+.hljs-selector-pseudo,
+.hljs-link {
+  color: #cb4b16;
+}
+
+/* Solarized Red */
+.hljs-built_in,
+.hljs-deletion {
+  color: #dc322f;
+}
+
+.hljs-formula {
+  background: #eee8d5;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/solarized_dark.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/solarized_dark.css
deleted file mode 100644
index f520533..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/solarized_dark.css
+++ /dev/null
@@ -1,107 +0,0 @@
-/*
-
-Orginal Style from ethanschoonover.com/solarized (c) Jeremy Hull <sourdrums@gmail.com>
-
-*/
-
-.hljs {
-  display: block;
-  padding: 0.5em;
-  background: #002b36;
-  color: #839496;
-}
-
-.hljs-comment,
-.hljs-template_comment,
-.diff .hljs-header,
-.hljs-doctype,
-.hljs-pi,
-.lisp .hljs-string,
-.hljs-javadoc {
-  color: #586e75;
-}
-
-/* Solarized Green */
-.hljs-keyword,
-.hljs-winutils,
-.method,
-.hljs-addition,
-.css .hljs-tag,
-.hljs-request,
-.hljs-status,
-.nginx .hljs-title {
-  color: #859900;
-}
-
-/* Solarized Cyan */
-.hljs-number,
-.hljs-command,
-.hljs-string,
-.hljs-tag .hljs-value,
-.hljs-rules .hljs-value,
-.hljs-phpdoc,
-.tex .hljs-formula,
-.hljs-regexp,
-.hljs-hexcolor,
-.hljs-link_url {
-  color: #2aa198;
-}
-
-/* Solarized Blue */
-.hljs-title,
-.hljs-localvars,
-.hljs-chunk,
-.hljs-decorator,
-.hljs-built_in,
-.hljs-identifier,
-.vhdl .hljs-literal,
-.hljs-id,
-.css .hljs-function {
-  color: #268bd2;
-}
-
-/* Solarized Yellow */
-.hljs-attribute,
-.hljs-variable,
-.lisp .hljs-body,
-.smalltalk .hljs-number,
-.hljs-constant,
-.hljs-class .hljs-title,
-.hljs-parent,
-.haskell .hljs-type,
-.hljs-link_reference {
-  color: #b58900;
-}
-
-/* Solarized Orange */
-.hljs-preprocessor,
-.hljs-preprocessor .hljs-keyword,
-.hljs-pragma,
-.hljs-shebang,
-.hljs-symbol,
-.hljs-symbol .hljs-string,
-.diff .hljs-change,
-.hljs-special,
-.hljs-attr_selector,
-.hljs-subst,
-.hljs-cdata,
-.clojure .hljs-title,
-.css .hljs-pseudo,
-.hljs-header {
-  color: #cb4b16;
-}
-
-/* Solarized Red */
-.hljs-deletion,
-.hljs-important {
-  color: #dc322f;
-}
-
-/* Solarized Violet */
-.hljs-link_label {
-  color: #6c71c4;
-}
-
-.tex .hljs-formula {
-  background: #073642;
-}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/solarized_light.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/solarized_light.css
deleted file mode 100644
index ad70474..0000000
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/solarized_light.css
+++ /dev/null
@@ -1,107 +0,0 @@
-/*
-
-Orginal Style from ethanschoonover.com/solarized (c) Jeremy Hull <sourdrums@gmail.com>
-
-*/
-
-.hljs {
-  display: block;
-  padding: 0.5em;
-  background: #fdf6e3;
-  color: #657b83;
-}
-
-.hljs-comment,
-.hljs-template_comment,
-.diff .hljs-header,
-.hljs-doctype,
-.hljs-pi,
-.lisp .hljs-string,
-.hljs-javadoc {
-  color: #93a1a1;
-}
-
-/* Solarized Green */
-.hljs-keyword,
-.hljs-winutils,
-.method,
-.hljs-addition,
-.css .hljs-tag,
-.hljs-request,
-.hljs-status,
-.nginx .hljs-title {
-  color: #859900;
-}
-
-/* Solarized Cyan */
-.hljs-number,
-.hljs-command,
-.hljs-string,
-.hljs-tag .hljs-value,
-.hljs-rules .hljs-value,
-.hljs-phpdoc,
-.tex .hljs-formula,
-.hljs-regexp,
-.hljs-hexcolor,
-.hljs-link_url {
-  color: #2aa198;
-}
-
-/* Solarized Blue */
-.hljs-title,
-.hljs-localvars,
-.hljs-chunk,
-.hljs-decorator,
-.hljs-built_in,
-.hljs-identifier,
-.vhdl .hljs-literal,
-.hljs-id,
-.css .hljs-function {
-  color: #268bd2;
-}
-
-/* Solarized Yellow */
-.hljs-attribute,
-.hljs-variable,
-.lisp .hljs-body,
-.smalltalk .hljs-number,
-.hljs-constant,
-.hljs-class .hljs-title,
-.hljs-parent,
-.haskell .hljs-type,
-.hljs-link_reference {
-  color: #b58900;
-}
-
-/* Solarized Orange */
-.hljs-preprocessor,
-.hljs-preprocessor .hljs-keyword,
-.hljs-pragma,
-.hljs-shebang,
-.hljs-symbol,
-.hljs-symbol .hljs-string,
-.diff .hljs-change,
-.hljs-special,
-.hljs-attr_selector,
-.hljs-subst,
-.hljs-cdata,
-.clojure .hljs-title,
-.css .hljs-pseudo,
-.hljs-header {
-  color: #cb4b16;
-}
-
-/* Solarized Red */
-.hljs-deletion,
-.hljs-important {
-  color: #dc322f;
-}
-
-/* Solarized Violet */
-.hljs-link_label {
-  color: #6c71c4;
-}
-
-.tex .hljs-formula {
-  background: #eee8d5;
-}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/sunburst.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/sunburst.css
index 07b30c2..f56dd5e 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/sunburst.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/sunburst.css
@@ -5,156 +5,98 @@ Sunburst-like style (c) Vasily Polovnyov <vast@whiteants.net>
 */
 
 .hljs {
-  display: block; padding: 0.5em;
-  background: #000; color: #f8f8f8;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #000;
+  color: #f8f8f8;
 }
 
 .hljs-comment,
-.hljs-template_comment,
-.hljs-javadoc {
+.hljs-quote {
   color: #aeaeae;
   font-style: italic;
 }
 
 .hljs-keyword,
-.ruby .hljs-function .hljs-keyword,
-.hljs-request,
-.hljs-status,
-.nginx .hljs-title {
-  color: #E28964;
+.hljs-selector-tag,
+.hljs-type {
+  color: #e28964;
 }
 
-.hljs-function .hljs-keyword,
-.hljs-sub .hljs-keyword,
-.method,
-.hljs-list .hljs-title {
-  color: #99CF50;
-}
-
-.hljs-string,
-.hljs-tag .hljs-value,
-.hljs-cdata,
-.hljs-filter .hljs-argument,
-.hljs-attr_selector,
-.apache .hljs-cbracket,
-.hljs-date,
-.tex .hljs-command,
-.coffeescript .hljs-attribute {
-  color: #65B042;
+.hljs-string {
+  color: #65b042;
 }
 
 .hljs-subst {
-  color: #DAEFA3;
+  color: #daefa3;
 }
 
-.hljs-regexp {
-  color: #E9C062;
+.hljs-regexp,
+.hljs-link {
+  color: #e9c062;
 }
 
 .hljs-title,
-.hljs-sub .hljs-identifier,
-.hljs-pi,
+.hljs-section,
 .hljs-tag,
-.hljs-tag .hljs-keyword,
-.hljs-decorator,
-.hljs-shebang,
-.hljs-prompt {
-  color: #89BDFF;
+.hljs-name {
+  color: #89bdff;
 }
 
 .hljs-class .hljs-title,
-.haskell .hljs-type,
-.smalltalk .hljs-class,
-.hljs-javadoctag,
-.hljs-yardoctag,
-.hljs-phpdoc {
+.hljs-doctag {
   text-decoration: underline;
 }
 
 .hljs-symbol,
-.ruby .hljs-symbol .hljs-string,
+.hljs-bullet,
 .hljs-number {
-  color: #3387CC;
+  color: #3387cc;
 }
 
 .hljs-params,
 .hljs-variable,
-.clojure .hljs-attribute {
-  color: #3E87E3;
+.hljs-template-variable {
+  color: #3e87e3;
 }
 
-.css .hljs-tag,
-.hljs-rules .hljs-property,
-.hljs-pseudo,
-.tex .hljs-special {
-  color: #CDA869;
+.hljs-attribute {
+  color: #cda869;
 }
 
-.css .hljs-class {
-  color: #9B703F;
+.hljs-meta {
+  color: #8996a8;
 }
 
-.hljs-rules .hljs-keyword {
-  color: #C5AF75;
-}
-
-.hljs-rules .hljs-value {
-  color: #CF6A4C;
-}
-
-.css .hljs-id {
-  color: #8B98AB;
-}
-
-.hljs-annotation,
-.apache .hljs-sqbracket,
-.nginx .hljs-built_in {
-  color: #9B859D;
-}
-
-.hljs-preprocessor,
-.hljs-pragma {
-  color: #8996A8;
-}
-
-.hljs-hexcolor,
-.css .hljs-value .hljs-number {
-  color: #DD7B3B;
-}
-
-.css .hljs-function {
-  color: #DAD085;
-}
-
-.diff .hljs-header,
-.hljs-chunk,
-.tex .hljs-formula {
-  background-color: #0E2231;
-  color: #F8F8F8;
+.hljs-formula {
+  background-color: #0e2231;
+  color: #f8f8f8;
   font-style: italic;
 }
 
-.diff .hljs-change {
-  background-color: #4A410D;
-  color: #F8F8F8;
-}
-
 .hljs-addition {
-  background-color: #253B22;
-  color: #F8F8F8;
+  background-color: #253b22;
+  color: #f8f8f8;
 }
 
 .hljs-deletion {
-  background-color: #420E09;
-  color: #F8F8F8;
+  background-color: #420e09;
+  color: #f8f8f8;
 }
 
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
+.hljs-selector-class {
+  color: #9b703f;
+}
+
+.hljs-selector-id {
+  color: #8b98ab;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
 }
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow-night-blue.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow-night-blue.css
index dfe2675..78e59cc 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow-night-blue.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow-night-blue.css
@@ -5,89 +5,71 @@
 
 /* Tomorrow Comment */
 .hljs-comment,
-.hljs-title {
+.hljs-quote {
   color: #7285b7;
 }
 
 /* Tomorrow Red */
 .hljs-variable,
-.hljs-attribute,
+.hljs-template-variable,
 .hljs-tag,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class,
 .hljs-regexp,
-.ruby .hljs-constant,
-.xml .hljs-tag .hljs-title,
-.xml .hljs-pi,
-.xml .hljs-doctype,
-.html .hljs-doctype,
-.css .hljs-id,
-.css .hljs-class,
-.css .hljs-pseudo {
+.hljs-deletion {
   color: #ff9da4;
 }
 
 /* Tomorrow Orange */
 .hljs-number,
-.hljs-preprocessor,
-.hljs-pragma,
 .hljs-built_in,
+.hljs-builtin-name,
 .hljs-literal,
+.hljs-type,
 .hljs-params,
-.hljs-constant {
+.hljs-meta,
+.hljs-link {
   color: #ffc58f;
 }
 
 /* Tomorrow Yellow */
-.ruby .hljs-class .hljs-title,
-.css .hljs-rules .hljs-attribute {
+.hljs-attribute {
   color: #ffeead;
 }
 
 /* Tomorrow Green */
 .hljs-string,
-.hljs-value,
-.hljs-inheritance,
-.hljs-header,
-.ruby .hljs-symbol,
-.xml .hljs-cdata {
+.hljs-symbol,
+.hljs-bullet,
+.hljs-addition {
   color: #d1f1a9;
 }
 
-/* Tomorrow Aqua */
-.css .hljs-hexcolor {
-  color: #99ffff;
-}
-
 /* Tomorrow Blue */
-.hljs-function,
-.python .hljs-decorator,
-.python .hljs-title,
-.ruby .hljs-function .hljs-title,
-.ruby .hljs-title .hljs-keyword,
-.perl .hljs-sub,
-.javascript .hljs-title,
-.coffeescript .hljs-title {
+.hljs-title,
+.hljs-section {
   color: #bbdaff;
 }
 
 /* Tomorrow Purple */
 .hljs-keyword,
-.javascript .hljs-function {
+.hljs-selector-tag {
   color: #ebbbff;
 }
 
 .hljs {
   display: block;
+  overflow-x: auto;
   background: #002451;
   color: white;
   padding: 0.5em;
 }
 
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
 }
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow-night-bright.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow-night-bright.css
index 4ad5d25..e05af8a 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow-night-bright.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow-night-bright.css
@@ -4,89 +4,71 @@
 
 /* Tomorrow Comment */
 .hljs-comment,
-.hljs-title {
+.hljs-quote {
   color: #969896;
 }
 
 /* Tomorrow Red */
 .hljs-variable,
-.hljs-attribute,
+.hljs-template-variable,
 .hljs-tag,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class,
 .hljs-regexp,
-.ruby .hljs-constant,
-.xml .hljs-tag .hljs-title,
-.xml .hljs-pi,
-.xml .hljs-doctype,
-.html .hljs-doctype,
-.css .hljs-id,
-.css .hljs-class,
-.css .hljs-pseudo {
+.hljs-deletion {
   color: #d54e53;
 }
 
 /* Tomorrow Orange */
 .hljs-number,
-.hljs-preprocessor,
-.hljs-pragma,
 .hljs-built_in,
+.hljs-builtin-name,
 .hljs-literal,
+.hljs-type,
 .hljs-params,
-.hljs-constant {
+.hljs-meta,
+.hljs-link {
   color: #e78c45;
 }
 
 /* Tomorrow Yellow */
-.ruby .hljs-class .hljs-title,
-.css .hljs-rules .hljs-attribute {
+.hljs-attribute {
   color: #e7c547;
 }
 
 /* Tomorrow Green */
 .hljs-string,
-.hljs-value,
-.hljs-inheritance,
-.hljs-header,
-.ruby .hljs-symbol,
-.xml .hljs-cdata {
+.hljs-symbol,
+.hljs-bullet,
+.hljs-addition {
   color: #b9ca4a;
 }
 
-/* Tomorrow Aqua */
-.css .hljs-hexcolor {
-  color: #70c0b1;
-}
-
 /* Tomorrow Blue */
-.hljs-function,
-.python .hljs-decorator,
-.python .hljs-title,
-.ruby .hljs-function .hljs-title,
-.ruby .hljs-title .hljs-keyword,
-.perl .hljs-sub,
-.javascript .hljs-title,
-.coffeescript .hljs-title {
+.hljs-title,
+.hljs-section {
   color: #7aa6da;
 }
 
 /* Tomorrow Purple */
 .hljs-keyword,
-.javascript .hljs-function {
+.hljs-selector-tag {
   color: #c397d8;
 }
 
 .hljs {
   display: block;
+  overflow-x: auto;
   background: black;
   color: #eaeaea;
   padding: 0.5em;
 }
 
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
 }
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow-night-eighties.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow-night-eighties.css
index 08b49c6..08fd51c 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow-night-eighties.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow-night-eighties.css
@@ -4,89 +4,71 @@
 
 /* Tomorrow Comment */
 .hljs-comment,
-.hljs-title {
+.hljs-quote {
   color: #999999;
 }
 
 /* Tomorrow Red */
 .hljs-variable,
-.hljs-attribute,
+.hljs-template-variable,
 .hljs-tag,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class,
 .hljs-regexp,
-.ruby .hljs-constant,
-.xml .hljs-tag .hljs-title,
-.xml .hljs-pi,
-.xml .hljs-doctype,
-.html .hljs-doctype,
-.css .hljs-id,
-.css .hljs-class,
-.css .hljs-pseudo {
+.hljs-deletion {
   color: #f2777a;
 }
 
 /* Tomorrow Orange */
 .hljs-number,
-.hljs-preprocessor,
-.hljs-pragma,
 .hljs-built_in,
+.hljs-builtin-name,
 .hljs-literal,
+.hljs-type,
 .hljs-params,
-.hljs-constant {
+.hljs-meta,
+.hljs-link {
   color: #f99157;
 }
 
 /* Tomorrow Yellow */
-.ruby .hljs-class .hljs-title,
-.css .hljs-rules .hljs-attribute {
+.hljs-attribute {
   color: #ffcc66;
 }
 
 /* Tomorrow Green */
 .hljs-string,
-.hljs-value,
-.hljs-inheritance,
-.hljs-header,
-.ruby .hljs-symbol,
-.xml .hljs-cdata {
+.hljs-symbol,
+.hljs-bullet,
+.hljs-addition {
   color: #99cc99;
 }
 
-/* Tomorrow Aqua */
-.css .hljs-hexcolor {
-  color: #66cccc;
-}
-
 /* Tomorrow Blue */
-.hljs-function,
-.python .hljs-decorator,
-.python .hljs-title,
-.ruby .hljs-function .hljs-title,
-.ruby .hljs-title .hljs-keyword,
-.perl .hljs-sub,
-.javascript .hljs-title,
-.coffeescript .hljs-title {
+.hljs-title,
+.hljs-section {
   color: #6699cc;
 }
 
 /* Tomorrow Purple */
 .hljs-keyword,
-.javascript .hljs-function {
+.hljs-selector-tag {
   color: #cc99cc;
 }
 
 .hljs {
   display: block;
+  overflow-x: auto;
   background: #2d2d2d;
   color: #cccccc;
   padding: 0.5em;
 }
 
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
 }
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow-night.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow-night.css
index c269b17..ddd270a 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow-night.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow-night.css
@@ -5,89 +5,71 @@
 
 /* Tomorrow Comment */
 .hljs-comment,
-.hljs-title {
+.hljs-quote {
   color: #969896;
 }
 
 /* Tomorrow Red */
 .hljs-variable,
-.hljs-attribute,
+.hljs-template-variable,
 .hljs-tag,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class,
 .hljs-regexp,
-.ruby .hljs-constant,
-.xml .hljs-tag .hljs-title,
-.xml .hljs-pi,
-.xml .hljs-doctype,
-.html .hljs-doctype,
-.css .hljs-id,
-.css .hljs-class,
-.css .hljs-pseudo {
+.hljs-deletion {
   color: #cc6666;
 }
 
 /* Tomorrow Orange */
 .hljs-number,
-.hljs-preprocessor,
-.hljs-pragma,
 .hljs-built_in,
+.hljs-builtin-name,
 .hljs-literal,
+.hljs-type,
 .hljs-params,
-.hljs-constant {
+.hljs-meta,
+.hljs-link {
   color: #de935f;
 }
 
 /* Tomorrow Yellow */
-.ruby .hljs-class .hljs-title,
-.css .hljs-rules .hljs-attribute {
+.hljs-attribute {
   color: #f0c674;
 }
 
 /* Tomorrow Green */
 .hljs-string,
-.hljs-value,
-.hljs-inheritance,
-.hljs-header,
-.ruby .hljs-symbol,
-.xml .hljs-cdata {
+.hljs-symbol,
+.hljs-bullet,
+.hljs-addition {
   color: #b5bd68;
 }
 
-/* Tomorrow Aqua */
-.css .hljs-hexcolor {
-  color: #8abeb7;
-}
-
 /* Tomorrow Blue */
-.hljs-function,
-.python .hljs-decorator,
-.python .hljs-title,
-.ruby .hljs-function .hljs-title,
-.ruby .hljs-title .hljs-keyword,
-.perl .hljs-sub,
-.javascript .hljs-title,
-.coffeescript .hljs-title {
+.hljs-title,
+.hljs-section {
   color: #81a2be;
 }
 
 /* Tomorrow Purple */
 .hljs-keyword,
-.javascript .hljs-function {
+.hljs-selector-tag {
   color: #b294bb;
 }
 
 .hljs {
   display: block;
+  overflow-x: auto;
   background: #1d1f21;
   color: #c5c8c6;
   padding: 0.5em;
 }
 
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
 }
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow.css
index 3bdead6..026a62f 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/tomorrow.css
@@ -2,89 +2,71 @@
 
 /* Tomorrow Comment */
 .hljs-comment,
-.hljs-title {
+.hljs-quote {
   color: #8e908c;
 }
 
 /* Tomorrow Red */
 .hljs-variable,
-.hljs-attribute,
+.hljs-template-variable,
 .hljs-tag,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class,
 .hljs-regexp,
-.ruby .hljs-constant,
-.xml .hljs-tag .hljs-title,
-.xml .hljs-pi,
-.xml .hljs-doctype,
-.html .hljs-doctype,
-.css .hljs-id,
-.css .hljs-class,
-.css .hljs-pseudo {
+.hljs-deletion {
   color: #c82829;
 }
 
 /* Tomorrow Orange */
 .hljs-number,
-.hljs-preprocessor,
-.hljs-pragma,
 .hljs-built_in,
+.hljs-builtin-name,
 .hljs-literal,
+.hljs-type,
 .hljs-params,
-.hljs-constant {
+.hljs-meta,
+.hljs-link {
   color: #f5871f;
 }
 
 /* Tomorrow Yellow */
-.ruby .hljs-class .hljs-title,
-.css .hljs-rules .hljs-attribute {
+.hljs-attribute {
   color: #eab700;
 }
 
 /* Tomorrow Green */
 .hljs-string,
-.hljs-value,
-.hljs-inheritance,
-.hljs-header,
-.ruby .hljs-symbol,
-.xml .hljs-cdata {
+.hljs-symbol,
+.hljs-bullet,
+.hljs-addition {
   color: #718c00;
 }
 
-/* Tomorrow Aqua */
-.css .hljs-hexcolor {
-  color: #3e999f;
-}
-
 /* Tomorrow Blue */
-.hljs-function,
-.python .hljs-decorator,
-.python .hljs-title,
-.ruby .hljs-function .hljs-title,
-.ruby .hljs-title .hljs-keyword,
-.perl .hljs-sub,
-.javascript .hljs-title,
-.coffeescript .hljs-title {
+.hljs-title,
+.hljs-section {
   color: #4271ae;
 }
 
 /* Tomorrow Purple */
 .hljs-keyword,
-.javascript .hljs-function {
+.hljs-selector-tag {
   color: #8959a8;
 }
 
 .hljs {
   display: block;
+  overflow-x: auto;
   background: white;
   color: #4d4d4c;
   padding: 0.5em;
 }
 
-.coffeescript .javascript,
-.javascript .xml,
-.tex .hljs-formula,
-.xml .javascript,
-.xml .vbscript,
-.xml .css,
-.xml .hljs-cdata {
-  opacity: 0.5;
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
 }
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/vs.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/vs.css
index bf33f0f..c5d07d3 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/vs.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/vs.css
@@ -4,86 +4,65 @@ Visual Studio-like style based on original C# coloring by Jason Diamond <jason@d
 
 */
 .hljs {
-  display: block; padding: 0.5em;
-  background: white; color: black;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: white;
+  color: black;
 }
 
 .hljs-comment,
-.hljs-annotation,
-.hljs-template_comment,
-.diff .hljs-header,
-.hljs-chunk,
-.apache .hljs-cbracket {
+.hljs-quote,
+.hljs-variable {
   color: #008000;
 }
 
 .hljs-keyword,
-.hljs-id,
+.hljs-selector-tag,
 .hljs-built_in,
-.smalltalk .hljs-class,
-.hljs-winutils,
-.bash .hljs-variable,
-.tex .hljs-command,
-.hljs-request,
-.hljs-status,
-.nginx .hljs-title,
-.xml .hljs-tag,
-.xml .hljs-tag .hljs-value {
+.hljs-name,
+.hljs-tag {
   color: #00f;
 }
 
 .hljs-string,
 .hljs-title,
-.hljs-parent,
-.hljs-tag .hljs-value,
-.hljs-rules .hljs-value,
-.hljs-rules .hljs-value .hljs-number,
-.ruby .hljs-symbol,
-.ruby .hljs-symbol .hljs-string,
-.hljs-aggregate,
-.hljs-template_tag,
-.django .hljs-variable,
-.hljs-addition,
-.hljs-flow,
-.hljs-stream,
-.apache .hljs-tag,
-.hljs-date,
-.tex .hljs-formula,
-.coffeescript .hljs-attribute {
+.hljs-section,
+.hljs-attribute,
+.hljs-literal,
+.hljs-template-tag,
+.hljs-template-variable,
+.hljs-type,
+.hljs-addition {
   color: #a31515;
 }
 
-.ruby .hljs-string,
-.hljs-decorator,
-.hljs-filter .hljs-argument,
-.hljs-localvars,
-.hljs-array,
-.hljs-attr_selector,
-.hljs-pseudo,
-.hljs-pi,
-.hljs-doctype,
 .hljs-deletion,
-.hljs-envvar,
-.hljs-shebang,
-.hljs-preprocessor,
-.hljs-pragma,
-.userType,
-.apache .hljs-sqbracket,
-.nginx .hljs-built_in,
-.tex .hljs-special,
-.hljs-prompt {
+.hljs-selector-attr,
+.hljs-selector-pseudo,
+.hljs-meta {
   color: #2b91af;
 }
 
-.hljs-phpdoc,
-.hljs-javadoc,
-.hljs-xmlDocTag {
+.hljs-doctag {
   color: #808080;
 }
 
-.vhdl .hljs-typename { font-weight: bold; }
-.vhdl .hljs-string { color: #666666; }
-.vhdl .hljs-literal { color: #a31515; }
-.vhdl .hljs-attribute { color: #00B0E8; }
+.hljs-attr {
+  color: #f00;
+}
 
-.xml .hljs-attribute { color: #f00; }
+.hljs-symbol,
+.hljs-bullet,
+.hljs-link {
+  color: #00b0e8;
+}
+
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/vs2015.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/vs2015.css
new file mode 100644
index 0000000..d1d9be3
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/vs2015.css
@@ -0,0 +1,115 @@
+/*
+ * Visual Studio 2015 dark style
+ * Author: Nicolas LLOBERA <nllobera@gmail.com>
+ */
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #1E1E1E;
+  color: #DCDCDC;
+}
+
+.hljs-keyword,
+.hljs-literal,
+.hljs-symbol,
+.hljs-name {
+  color: #569CD6;
+}
+.hljs-link {
+  color: #569CD6;
+  text-decoration: underline;
+}
+
+.hljs-built_in,
+.hljs-type {
+  color: #4EC9B0;
+}
+
+.hljs-number,
+.hljs-class {
+  color: #B8D7A3;
+}
+
+.hljs-string,
+.hljs-meta-string {
+  color: #D69D85;
+}
+
+.hljs-regexp,
+.hljs-template-tag {
+  color: #9A5334;
+}
+
+.hljs-subst,
+.hljs-function,
+.hljs-title,
+.hljs-params,
+.hljs-formula {
+  color: #DCDCDC;
+}
+
+.hljs-comment,
+.hljs-quote {
+  color: #57A64A;
+  font-style: italic;
+}
+
+.hljs-doctag {
+  color: #608B4E;
+}
+
+.hljs-meta,
+.hljs-meta-keyword,
+.hljs-tag {
+  color: #9B9B9B;
+}
+
+.hljs-variable,
+.hljs-template-variable {
+  color: #BD63C5;
+}
+
+.hljs-attr,
+.hljs-attribute,
+.hljs-builtin-name {
+  color: #9CDCFE;
+}
+
+.hljs-section {
+  color: gold;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
+
+/*.hljs-code {
+  font-family:'Monospace';
+}*/
+
+.hljs-bullet,
+.hljs-selector-tag,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-selector-attr,
+.hljs-selector-pseudo {
+  color: #D7BA7D;
+}
+
+.hljs-addition {
+  background-color: #144212;
+  display: inline-block;
+  width: 100%;
+}
+
+.hljs-deletion {
+  background-color: #600;
+  display: inline-block;
+  width: 100%;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/xcode.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/xcode.css
index 57bd748..b305665 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/xcode.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/xcode.css
@@ -5,154 +5,100 @@ XCode style (c) Angel Garcia <angelgarcia.mail@gmail.com>
 */
 
 .hljs {
-  display: block; padding: 0.5em;
-  background: #fff; color: black;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #fff;
+  color: black;
+}
+
+/* Gray DOCTYPE selectors like WebKit */
+.xml .hljs-meta {
+  color: #c0c0c0;
 }
 
 .hljs-comment,
-.hljs-template_comment,
-.hljs-javadoc,
-.hljs-comment * {
-  color: #006a00;
+.hljs-quote {
+  color: #007400;
 }
 
+.hljs-tag,
+.hljs-attribute,
 .hljs-keyword,
+.hljs-selector-tag,
 .hljs-literal,
-.nginx .hljs-title {
+.hljs-name {
   color: #aa0d91;
 }
-.method,
-.hljs-list .hljs-title,
-.hljs-tag .hljs-title,
-.setting .hljs-value,
-.hljs-winutils,
-.tex .hljs-command,
-.http .hljs-title,
-.hljs-request,
-.hljs-status {
-  color: #008;
+
+.hljs-variable,
+.hljs-template-variable {
+  color: #3F6E74;
 }
 
-.hljs-envvar,
-.tex .hljs-special {
-  color: #660;
-}
-
-.hljs-string {
+.hljs-code,
+.hljs-string,
+.hljs-meta-string {
   color: #c41a16;
 }
-.hljs-tag .hljs-value,
-.hljs-cdata,
-.hljs-filter .hljs-argument,
-.hljs-attr_selector,
-.apache .hljs-cbracket,
-.hljs-date,
-.hljs-regexp {
-  color: #080;
+
+.hljs-regexp,
+.hljs-link {
+  color: #0E0EFF;
 }
 
-.hljs-sub .hljs-identifier,
-.hljs-pi,
-.hljs-tag,
-.hljs-tag .hljs-keyword,
-.hljs-decorator,
-.ini .hljs-title,
-.hljs-shebang,
-.hljs-prompt,
-.hljs-hexcolor,
-.hljs-rules .hljs-value,
-.css .hljs-value .hljs-number,
+.hljs-title,
 .hljs-symbol,
-.hljs-symbol .hljs-string,
-.hljs-number,
-.css .hljs-function,
-.clojure .hljs-title,
-.clojure .hljs-built_in,
-.hljs-function .hljs-title,
-.coffeescript .hljs-attribute {
+.hljs-bullet,
+.hljs-number {
   color: #1c00cf;
 }
 
+.hljs-section,
+.hljs-meta {
+  color: #643820;
+}
+
+
 .hljs-class .hljs-title,
-.haskell .hljs-type,
-.smalltalk .hljs-class,
-.hljs-javadoctag,
-.hljs-yardoctag,
-.hljs-phpdoc,
-.hljs-typename,
-.hljs-tag .hljs-attribute,
-.hljs-doctype,
-.hljs-class .hljs-id,
+.hljs-type,
 .hljs-built_in,
-.setting,
-.hljs-params,
-.clojure .hljs-attribute {
+.hljs-builtin-name,
+.hljs-params {
   color: #5c2699;
 }
 
-.hljs-variable {
- color: #3f6e74;
+.hljs-attr {
+  color: #836C28;
 }
-.css .hljs-tag,
-.hljs-rules .hljs-property,
-.hljs-pseudo,
+
 .hljs-subst {
   color: #000;
 }
 
-.css .hljs-class,
-.css .hljs-id {
-  color: #9B703F;
-}
-
-.hljs-value .hljs-important {
-  color: #ff7700;
-  font-weight: bold;
-}
-
-.hljs-rules .hljs-keyword {
-  color: #C5AF75;
-}
-
-.hljs-annotation,
-.apache .hljs-sqbracket,
-.nginx .hljs-built_in {
-  color: #9B859D;
-}
-
-.hljs-preprocessor,
-.hljs-preprocessor *,
-.hljs-pragma {
-  color: #643820;
-}
-
-.tex .hljs-formula {
-  background-color: #EEE;
+.hljs-formula {
+  background-color: #eee;
   font-style: italic;
 }
 
-.diff .hljs-header,
-.hljs-chunk {
-  color: #808080;
-  font-weight: bold;
-}
-
-.diff .hljs-change {
-  background-color: #BCCFF9;
-}
-
 .hljs-addition {
-  background-color: #BAEEBA;
+  background-color: #baeeba;
 }
 
 .hljs-deletion {
-  background-color: #FFC8BD;
+  background-color: #ffc8bd;
 }
 
-.hljs-comment .hljs-yardoctag {
+.hljs-selector-id,
+.hljs-selector-class {
+  color: #9b703f;
+}
+
+.hljs-doctag,
+.hljs-strong {
   font-weight: bold;
 }
 
-.method .hljs-id {
-  color: #000;
+.hljs-emphasis {
+  font-style: italic;
 }
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/xt256.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/xt256.css
new file mode 100644
index 0000000..58df82c
--- /dev/null
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/xt256.css
@@ -0,0 +1,92 @@
+
+/*
+  xt256.css
+
+  Contact: initbar [at] protonmail [dot] ch
+         : github.com/initbar
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  color: #eaeaea;
+  background: #000;
+  padding: 0.5;
+}
+
+.hljs-subst {
+  color: #eaeaea;
+}
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
+
+.hljs-builtin-name,
+.hljs-type {
+  color: #eaeaea;
+}
+
+.hljs-params {
+  color: #da0000;
+}
+
+.hljs-literal,
+.hljs-number,
+.hljs-name {
+  color: #ff0000;
+  font-weight: bolder;
+}
+
+.hljs-comment {
+  color: #969896;
+}
+
+.hljs-selector-id,
+.hljs-quote {
+  color: #00ffff;
+}
+
+.hljs-template-variable,
+.hljs-variable,
+.hljs-title {
+  color: #00ffff;
+  font-weight: bold;
+}
+
+.hljs-selector-class,
+.hljs-keyword,
+.hljs-symbol {
+  color: #fff000;
+}
+
+.hljs-string,
+.hljs-bullet {
+  color: #00ff00;
+}
+
+.hljs-tag,
+.hljs-section {
+  color: #000fff;
+}
+
+.hljs-selector-tag {
+  color: #000fff;
+  font-weight: bold;
+}
+
+.hljs-attribute,
+.hljs-built_in,
+.hljs-regexp,
+.hljs-link {
+  color: #ff00ff;
+}
+
+.hljs-meta {
+  color: #fff;
+  font-weight: bolder;
+}
diff --git a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/zenburn.css b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/zenburn.css
index f6cb098..07be502 100644
--- a/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/zenburn.css
+++ b/plugins/redmine_ckeditor/assets/ckeditor-contrib/plugins/codesnippet/lib/highlight/styles/zenburn.css
@@ -6,112 +6,75 @@ based on dark.css by Ivan Sagalaev
 */
 
 .hljs {
-  display: block; padding: 0.5em;
-  background: #3F3F3F;
-  color: #DCDCDC;
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #3f3f3f;
+  color: #dcdcdc;
 }
 
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