Re: will we ever have zero width assertions in regexps?

[Stefan Monnier]

> Indeed.  I'm using Emacs 23.2.1, so I don't know whether this is already in
> the latest CVS version.  But assuming it's not, is this feature on the radar
> of the developers?

No.  There hasn't been much demand/interest for it, tho IIRC someone
posted a patch to implement it at some point in the past.

I think there'd be more interest in extending regexps to PEG in a way
similar to Lua's Lpeg.  I myself would also be more interested in
replacing the backtracking matcher with a non-backtracking one (for the
cases where backtracking is not required by backrefs).


        Stefan