Seems that most languages with built-in regexes lack any operation on them (like `/foo/ + /bar/` or `/foo/ | /bar/`). I'd blame the standard library, not praise

Seems that most languages with built-in regexes lack any operation on them (like `/foo/ + /bar/` or `/foo/ | /bar/`). I'd blame the standard library, not praise a third-party one.