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From 8d3b5c730596d254d0bbcfbab52f4158f03397b3 Mon Sep 17 00:00:00 2001
From: Kornelius Kalnbach <murphy@rubychan.de>
Date: Wed, 28 Jun 2023 17:24:55 +0200
Subject: [PATCH] make regex faster with Atomic Grouping
---
lib/redcloth/formatters/html.rb | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/redcloth/formatters/html.rb b/lib/redcloth/formatters/html.rb
index b241c99..aaeae34 100644
--- a/lib/redcloth/formatters/html.rb
+++ b/lib/redcloth/formatters/html.rb
@@ -324,7 +324,7 @@ def before_transform(text)
# Clean unauthorized tags.
def clean_html( text, allowed_tags = BASIC_TAGS )
text.gsub!( /<!\[CDATA\[/, '' )
- text.gsub!( /<(\/*)([A-Za-z]\w*)([^>]*?)(\s?\/?)>/ ) do |m|
+ text.gsub!( /<(\/*)(?>[A-Za-z]\w*)([^>]*?)(\s?\/?)>/ ) do |m|
raw = $~
tag = raw[2].downcase
if allowed_tags.has_key? tag
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