From 5399161425869cdcf07c7d221778426c3e90f97e Mon Sep 17 00:00:00 2001
From: Vincent Vanwaelscappel <vincent@cubedesigners.com>
Date: Mon, 19 Jan 2026 16:26:03 +0100
Subject: [PATCH] #7894 @1

---
 src/Text.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Text.php b/src/Text.php
index b5a5cb0..62dab5a 100644
--- a/src/Text.php
+++ b/src/Text.php
@@ -248,10 +248,10 @@ class Text
         $tags = implode('|', $allowed_tags);
 
         if (empty($tags)) {
-            $tags = '[a-z]+';
+            $tags = '[a-z0-9]+';
         }
 
-        preg_match_all('@</?\s*(' . $tags . ')(\s+[a-z_]+=(\'[^\']+\'|"[^"]+"))*\s*/?>@i', $str, $matches);
+        preg_match_all('@</?\s*(' . $tags . ')(\s+[a-z]+=(\'[^\']+\'|"[^"]+"))*\s*/?>@i', $str, $matches);
 
         $full_tags = $matches[0];
         $tag_names = $matches[1];
-- 
2.39.5