Look-behind proposal

Claude Pache claude.pache at gmail.com
Mon May 18 22:33:18 UTC 2015

> Le 18 mai 2015 à 23:53, Jason Orendorff <jason.orendorff at gmail.com> a écrit :
> On Mon, May 18, 2015 at 1:51 PM, Claude Pache <claude.pache at gmail.com> wrote:
>> Another more powerful approach (which I prefer), [...]
> As long as we prohibit matching groups within lookbehind assertions, I
> think the approach you prefer is a strict superset of what's proposed.
> So there's no opportunity cost to taking the proposal as-is: the .NET
> semantics could be compatibly added later.
> I imagine TC39 gives some preference to proposals that exist in a
> concrete form. So if you prefer the .NET approach enough to do
> anything about it, now's a great time to write some spec text.
>> That said, I think there are easier missing features to be added, that are
>> supported by most other RegExp flavours. I'm thinking of:
>> * the `s`, or `.dotall` flag: the dot `.` matches every character, including
>> newlines;
>> * true support of Unicode, namely: escape sequences such as `\Lu` for
>> uppercase letter, or `\X` for grapheme cluster.
> Why not submit proposals for these?

You are right, but procrastination and other activities... 
But I'll try to write some more concrete proposals for those ideas.


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