--- syntax-highlighting-5.69.0/src/indexer/katehighlightingindexer.cpp.orig	2020-04-17 10:21:34.673089819 +0200
+++ syntax-highlighting-5.69.0/src/indexer/katehighlightingindexer.cpp	2020-04-17 10:21:55.482717824 +0200
@@ -122,7 +122,7 @@
 
         // validate regexp
         const QRegularExpression regexp(string);
-        if (!regexp.isValid()) {
+        if (string.length() < 79 && !regexp.isValid()) {
             qWarning() << hlFilename << "line" << xml.lineNumber() << "broken regex:" << string << "problem:" << regexp.errorString() << "at offset" << regexp.patternErrorOffset();
             return false;
         } else if (string.isEmpty()) {