Fun factoid most have forgotten: regex is perl. The beginnings are elsewhere but regex as we know it was designed as part of the language and the engine was pulled out and reused when people found how useful it was.
Perls regex parser is still far above the features in more modern languages, supporting, among other things, code execution within capture groups. If I remember right the perl regex parser is actually Turing complete
Perls regex parser is still far above the features in more modern languages, supporting, among other things, code execution within capture groups. If I remember right the perl regex parser is actually Turing complete