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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: help-gnu-emacs@gnu.org
Subject: Re: Gnus nnmail-split-fancy regexps can’t support backrefs inside themselves?
Date: Tue, 20 Mar 2018 16:20:41 -0400	[thread overview]
Message-ID: <jwvbmfiy03p.fsf-monnier+gmane.emacs.help@gnu.org> (raw)
In-Reply-To: 4i30kmyxt8ln.1gu.xxuns.g6.gal@galex-713.eu


Indeed, they don't support backrefs, because Gnus takes the regexp you
specify and embeds it into a larger regexp which also uses \(...\)
grouping, so you'd have to offset your backrefs by the proper number of
preceding \( in order for them to work right (and changes in Emacs/Gnus
can change this offset, of course, to make things more interesting).


        Stefan




  parent reply	other threads:[~2018-03-20 20:20 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-16 19:15 Gnus nnmail-split-fancy regexps can’t support backrefs inside themselves? Garreau, Alexandre
2018-03-17  8:25 ` tomas
2018-03-19 12:57   ` Garreau, Alexandre
2018-03-19 15:10     ` tomas
2018-03-20 20:20 ` Stefan Monnier [this message]
2018-03-20 21:09   ` tomas
2018-03-20 22:05     ` Stefan Monnier

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