- #42828: Auto-p destroys alphanumeric named entities like ½

modules/filter.module

@@ -1034,7 +1034,7 @@ function _filter_autop($text) {
       $chunk = preg_replace('|(?<!<br />)\s*\n|', "<br />\n", $chunk); // make line breaks
       $chunk = preg_replace('!(</?(?:table|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|select|form|blockquote|p|h[1-6])[^>]*>)\s*<br />!', "$1", $chunk);
       $chunk = preg_replace('!<br />(\s*</?(?:p|li|div|th|pre|td|ul|ol)>)!', '$1', $chunk);
-      $chunk = preg_replace('/&([^#])(?![a-z]{1,8};)/', '&amp;$1', $chunk);
+      $chunk = preg_replace('/&([^#])(?![A-Za-z0-9]{1,8};)/', '&amp;$1', $chunk);
     }
     $output .= $chunk;
   }

modules/filter/filter.module

@@ -1034,7 +1034,7 @@ function _filter_autop($text) {
       $chunk = preg_replace('|(?<!<br />)\s*\n|', "<br />\n", $chunk); // make line breaks
       $chunk = preg_replace('!(</?(?:table|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|select|form|blockquote|p|h[1-6])[^>]*>)\s*<br />!', "$1", $chunk);
       $chunk = preg_replace('!<br />(\s*</?(?:p|li|div|th|pre|td|ul|ol)>)!', '$1', $chunk);
-      $chunk = preg_replace('/&([^#])(?![a-z]{1,8};)/', '&amp;$1', $chunk);
+      $chunk = preg_replace('/&([^#])(?![A-Za-z0-9]{1,8};)/', '&amp;$1', $chunk);
     }
     $output .= $chunk;
   }