From: Lennart Borgman <lennart.borgman@gmail.com>
To: Juri Linkov <juri@jurta.org>
Cc: 6384@debbugs.gnu.org
Subject: bug#6384: Teach rx explicitly numbered submatches
Date: Thu, 10 Jun 2010 18:21:36 +0200 [thread overview]
Message-ID: <AANLkTinL0UP64SY5EYO4QfvFM9TQCSYTJ0XqO-BL6L0_@mail.gmail.com> (raw)
In-Reply-To: <871vce98br.fsf@mail.jurta.org>
On Thu, Jun 10, 2010 at 5:51 PM, Juri Linkov <juri@jurta.org> wrote:
>> (submatch . (rx-submatch 1 nil)) ; SRE
>> + (submatch-n . (rx-submatch-n 2 nil))
>
> I think better would be to allow the existing subform `submatch'
> to support numbered groups, i.e. in addition to the current form
> `(submatch SEXP1 SEXP2 ...)' also support
> `(submatch N SEXP1 SEXP2 ...)' because the number is a parameter
> of normal groups.
>
> There are already subforms that support different number of integer
> arguments like `(repeat N SEXP)' and `(repeat N M SEXP)'. So the same
> could be done for `submatch' too.
I thought of that, but currently you can do
(rx (submatch 1 "str"))
Should perhaps 1 etc be disallowed as SEXP:s in rx? (I do not know how
to do it because I believe rx uses `read'.)
prev parent reply other threads:[~2010-06-10 16:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-09 17:22 bug#6384: Teach rx explicitly numbered submatches Lennart Borgman
2010-06-09 18:16 ` Stefan Monnier
2010-06-09 18:19 ` Lennart Borgman
2010-06-10 15:51 ` Juri Linkov
2010-06-10 16:21 ` Lennart Borgman [this message]
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