Fixed wikitext rule for CSS classes to not erroneously match `{{{`

core/modules/parsers/newwikitextparser/blockrules/class.js

@@ -16,11 +16,11 @@ exports.name = "class";
 
 exports.blockParser = true;
 
-exports.regExpString = "\\{\\{(?:[^\\{\\r\\n]*)\\{$";
+exports.regExpString = "\\{\\{(?:[^\\{\\r\\n]+)\\{$";
 
 exports.parse = function(match) {
 	var tree = [],
-		reStart = /\{\{([^\{\r\n]*){(?:\r?\n)?/mg,
+		reStart = /\{\{([^\{\r\n]+){(?:\r?\n)?/mg,
 		reEnd = /(\}\}\}$(?:\r?\n)?)/mg,
 		endMatch;
 	reStart.lastIndex = this.pos;

tw5.com/tiddlers/TestingNewWikiText.tid

@@ -9,6 +9,10 @@ One two three four. With a link to HelloThere. And a link to TiddlyWiki and Tidd
 
 Here's a paragraph with an embedded macro <<image "Motovun Jack.jpg">> and that was it.
 
+{{{
+This will be mono
+}}}
+
 Here is a macro <<list all>>
 
 ! This is a new heading