Regexp that matches valid regexps

Question

Is there a regular expression that matches valid regular expressions?

(I know there are several flavors of regexps. One would do.)

Answer 1

Depending on your goal I would say definately maybe.

If you want to filter regexps out from somewhere, it might prove difficult as regular expressions come in all sizes and shapes and they don't all start and end with slashes.

If you just need to know wether or not a regexp is valid there is another way. Depending on the language you're using you could try/catch

If you can be more specific I could try and give a better answer, the question is intruiging.