Bro: Regexp simplification + don't use captures if not needed

components/prism-bro.js

@@ -4,43 +4,41 @@ Prism.languages.bro = {
 		pattern: /(^|[^\\$])#.*/,
 		lookbehind: true,
 			inside: {
-				'italic':  /\b(TODO|FIXME|XXX)\b/
+				'italic':  /\b(?:TODO|FIXME|XXX)\b/
 		}
 	},
 
 	'string': {
-		pattern: /(["'])(\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,
+		pattern: /(["'])(?:\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,
 		greedy: true
 	},
 
-	'boolean': /\b(T|F)\b/,
+	'boolean': /\b[TF]\b/,
 
 	'function': {
-		pattern: /(?:function|hook|event) [a-zA-Z0-9_]+(::[a-zA-Z0-9_]+)?/,
+		pattern: /(?:function|hook|event) \w+(?:::\w+)?/,
 		inside: {
 			keyword: /^(?:function|hook|event)/
 		}
 	},
 
 	'variable':	{
-		pattern: /(?:global|local) [a-zA-Z0-9_]+/i,
+		pattern: /(?:global|local) \w+/i,
 		inside: {
 			keyword: /(?:global|local)/
 		}
 	},
 
-	'builtin':
-		/(@(load(-(sigs|plugin))?|unload|prefixes|ifn?def|else|(end)?if|DIR|FILENAME))|(&?(redef|priority|log|optional|default|add_func|delete_func|expire_func|read_expire|write_expire|create_expire|synchronized|persistent|rotate_interval|rotate_size|encrypt|raw_output|mergeable|group|error_handler|type_column))/,
+	'builtin': /(?:@(?:load(?:-(?:sigs|plugin))?|unload|prefixes|ifn?def|else|(?:end)?if|DIR|FILENAME))|(?:&?(?:redef|priority|log|optional|default|add_func|delete_func|expire_func|read_expire|write_expire|create_expire|synchronized|persistent|rotate_interval|rotate_size|encrypt|raw_output|mergeable|group|error_handler|type_column))/,
 
 	'constant': {
-		pattern: /const [a-zA-Z0-9_]+/i,
+		pattern: /const \w+/i,
 		inside: {
 			keyword: /const/
 		}
 	},
 
-	'keyword':
-		/\b(break|next|continue|alarm|using|of|add|delete|export|print|return|schedule|when|timeout|addr|any|bool|count|double|enum|file|int|interval|pattern|opaque|port|record|set|string|subnet|table|time|vector|for|if|else|in|module|function)\b/,
+	'keyword': /\b(?:break|next|continue|alarm|using|of|add|delete|export|print|return|schedule|when|timeout|addr|any|bool|count|double|enum|file|int|interval|pattern|opaque|port|record|set|string|subnet|table|time|vector|for|if|else|in|module|function)\b/,
 
 	'operator': /--?|\+\+?|!=?=?|<=?|>=?|==?=?|&&|\|\|?|\?|\*|\/|~|\^|%/,