Split string with a single occurence (not twice) of a delimiter in Javascript

Question

This is better explained with an example. I want to achieve an split like this:

two-separate-tokens-this--is--just--one--token-another

->

Answer 1

You would need a negative lookbehind assertion as well as your negative lookahead:

(?

http://regexr.com?31qrn

Unfortunately the javascript regular expression parser does not support negative lookbehinds, I believe the only workaround is to inspect your results afterwards and remove any matches that would have failed the lookbehind assertion (or in this case, combine them back into a single match).