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Re: rx.el sexp regexp syntax

From: Eric Abrahamsen
Subject: Re: rx.el sexp regexp syntax
Date: Sun, 03 Jun 2018 08:15:01 -0700
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

Helmut Eller <address@hidden> writes:

> On Sat, Jun 02 2018, Stefan Monnier wrote:
>>> I played around with this, but it might not be possible to achieve
>>> enough of the conveniences to make it worthwhile.
>> I think we'd need to extend the reader to provide a specialized syntax,
>> which in turns means changing elisp-mode, etc...
>> I think it's a fairly large amount of work, for fairly little benefit in
>> the end compared to what we can get today.
> Maybe we could start with an ordinary macro, e.g. (pcre "(a|b)"), which
> could translate Perl/Python regexp syntax to Emacs regexp syntax.

I made something like that, but the only advantage is your example
above: open and close parentheses, and the vertical bar. Everything else
still has to be double-backslashed. It feels inconsistent, and isn't
that much of a benefit...

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