From abe1c66061fa28551c25b6b0cd3c18597f70b48b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonatan=20K=C5=82osko?= <jonatanklosko@gmail.com>
Date: Tue, 18 Feb 2025 21:12:12 +0100
Subject: [PATCH] Fix code highlighting for languages with non-alphanumeric
 characters (#2092)

---
 lib/ex_doc/doc_ast.ex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/ex_doc/doc_ast.ex b/lib/ex_doc/doc_ast.ex
index cb20a602b..766b7b222 100644
--- a/lib/ex_doc/doc_ast.ex
+++ b/lib/ex_doc/doc_ast.ex
@@ -165,7 +165,7 @@ defmodule ExDoc.DocAST do
 
     ## Html cannot be parsed with regex, but we try our best...
     Regex.replace(
-      ~r/<pre(\s[^>]*)?><code(?:\s+class="(\w*)")?>([^<]*)<\/code><\/pre>/,
+      ~r/<pre(\s[^>]*)?><code(?:\s+class="([^"\s]*)")?>([^<]*)<\/code><\/pre>/,
       html,
       &highlight_code_block(&1, &2, &3, &4, highlight_info, opts)
     )