- Minor optimization in creating Regex objects; regexes without modifiers are special cased.
- Minor optimization in creating Regex objects; regexes without modifiers are special cased.

Example:
	/abc/		# compiles to: "(?^u:(?^u:abc))"
			# before it compiled to: "(?^u:(?^:(?^u:(?^:abc))))"

trizen/sidef,trizen/sidef,trizen/sidef,trizen/sidef