From ffc350651f8d3b99a984605c7b8b5570358f6dcc Mon Sep 17 00:00:00 2001
From: Manuel Cillero <manuel@cillero.es>
Date: Sun, 3 Mar 2024 20:06:25 +0100
Subject: [PATCH] =?UTF-8?q?=F0=9F=A7=91=E2=80=8D=F0=9F=92=BB=20Only=20modi?=
 =?UTF-8?q?fy=20classes=20if=20they=20have=20content?=
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---
 src/html/opt_classes.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/html/opt_classes.rs b/src/html/opt_classes.rs
index eda9361b..35392ac3 100644
--- a/src/html/opt_classes.rs
+++ b/src/html/opt_classes.rs
@@ -35,6 +35,10 @@ impl OptionClasses {
         let classes: String = classes.into();
         let classes: Vec<&str> = classes.split_ascii_whitespace().collect();
 
+        if classes.is_empty() {
+            return self;
+        }
+
         match op {
             ClassesOp::Add => {
                 self.add(&classes, self.0.len());
@@ -76,6 +80,7 @@ impl OptionClasses {
                 self.add(&classes, 0);
             }
         }
+
         self
     }