On Thu, 07 Jul 2011 21:17:17 +0200, Mike Samuel <[email protected]>
wrote:
One way to tell whether the group initialized to empty works on an
interpreter is to test
/^(?:\1x(y)x){2}$/.test("xyxyxyx")
which is true in most interpreters, but false in Rhino1.7 and Chrome12.
I do believe it should be false. The captures are cleared for each
iteration
of a quantified atom (RepeatMatcher in section 15.10.2.5, step 4), so the
\1 will
always be non-participating (and match the empty string).
Interestingly other perl 5 interpreters
I don't think ES RegExps should count as a PCRE :)
/L
--
Lasse Reichstein Holst Nielsen - [email protected]
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