From 1015acd7949427bdf845138a66745a6b4daee47f Mon Sep 17 00:00:00 2001
From: Anthony Baxter <anthonybaxter@gmail.com>
Date: Wed, 5 Dec 2001 06:05:09 +0000
Subject: [PATCH] backport 1.33: Be more permissive in what is accepted as an
 attribute name; this makes this module slightly more resiliant in the face of
 XHTML input, or just colons in attribute names.

---
 Lib/sgmllib.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/sgmllib.py b/Lib/sgmllib.py
index f612f2e900d9..194290236d53 100644
--- a/Lib/sgmllib.py
+++ b/Lib/sgmllib.py
@@ -36,7 +36,7 @@ commentopen = re.compile('<!--')
 commentclose = re.compile(r'--\s*>')
 tagfind = re.compile('[a-zA-Z][-_.a-zA-Z0-9]*')
 attrfind = re.compile(
-    r'\s*([a-zA-Z_][-.a-zA-Z_0-9]*)(\s*=\s*'
+    r'\s*([a-zA-Z_][-:.a-zA-Z_0-9]*)(\s*=\s*'
     r'(\'[^\']*\'|"[^"]*"|[-a-zA-Z0-9./:;+*%?!&$\(\)_#=~\'"]*))?')
 
 declname = re.compile(r'[a-zA-Z][-_.a-zA-Z0-9]*\s*')
-- 
2.47.3