Add regular expressions lookbehind

Sebastian Zartner sebastianzartner at
Sat Sep 28 13:54:13 PDT 2013

I wonder if the discussion about lookbehinds[1] and Marc Harter's proposal
for them[2] in the past led to anything.
I'd really like to see these implemented in ECMAScript specification and it
seems I am not the only one.[3][4][5] This even caused people to try to
mimic them.[6]
So I wanted to pick up the discussion again and ask, what info was missing
that they didn't get specified?


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