- Line-break filter tag matching was not case-insensitive, so it didn't pick up e.g. <PRE>

modules/filter.module

@@ -946,7 +946,7 @@ function _filter_autop($text) {
   // We don't apply any processing to the contents of these tags to avoid messing
   // up code. We look for matched pairs and allow basic nesting. For example:
   // "processed <pre> ignored <script> ignored </script> ignored </pre> processed"
-  $chunks = preg_split('@(</?(?:pre|script|style)[^>]*>)@', $text, -1, PREG_SPLIT_DELIM_CAPTURE);
+  $chunks = preg_split('@(</?(?:pre|script|style)[^>]*>)@i', $text, -1, PREG_SPLIT_DELIM_CAPTURE);
   // Note: PHP ensures the array consists of alternating delimiters and literals
   // and begins and ends with a literal (inserting NULL as required).
   $ignore = false;

modules/filter/filter.module

@@ -946,7 +946,7 @@ function _filter_autop($text) {
   // We don't apply any processing to the contents of these tags to avoid messing
   // up code. We look for matched pairs and allow basic nesting. For example:
   // "processed <pre> ignored <script> ignored </script> ignored </pre> processed"
-  $chunks = preg_split('@(</?(?:pre|script|style)[^>]*>)@', $text, -1, PREG_SPLIT_DELIM_CAPTURE);
+  $chunks = preg_split('@(</?(?:pre|script|style)[^>]*>)@i', $text, -1, PREG_SPLIT_DELIM_CAPTURE);
   // Note: PHP ensures the array consists of alternating delimiters and literals
   // and begins and ends with a literal (inserting NULL as required).
   $ignore = false;