On 10/09/2015 15:07, Nozomu Katō wrote:
Since there was a comment about Perl5 style vs .NET style when I first
posted my proposal to es-discuss, I just wanted to explain about the
background of my proposal. I proposed Perl5 compatible lookbehinds
because I thought it was relatively simple to implement. Moreover, I am
not confident that I can write a lookbehind proposal based on .NET
implementation, in the manner used in the ECMAScript specification.
As Jason Orendorff wrote before, the lookbehind supported by .NET is a
strict superset of what I have proposed. So, if you or someone else
submits another lookbehind proposal based on .NET and it supersedes my
proposal in a later version of ECMAScript, from the point of view of
users, that would look like just an enhancement.
It's not a superset. Captures would match differently.
Waldemar
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