From: Anselm Helbig <anselm.helbig+news2009@googlemail.com>
To: help-gnu-emacs@gnu.org
Subject: Re: I can not understant a paragraph in Emacs Lisp Reference.
Date: Sat, 11 Jul 2009 14:27:24 +0200 [thread overview]
Message-ID: <87bpnrcslv.wl%anselm.helbig+news2009@googlemail.com> (raw)
In-Reply-To: <mailman.2276.1247310683.2239.help-gnu-emacs@gnu.org>
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Hi!
> As a `\' is not special inside a character alternative, it can never
> remove the special meaning of `-' or `]'. So you should not quote
> these characters when they have no special meaning either. This would
> not clarify anything, since backslashes can legitimately precede these
> characters where they _have_ special meaning, as in `[^\]' (`"[^\\]"'
> for Lisp string syntax), which matches any single character except a
> backslash.
>
> `[^\]' or `"[^\\]"' , which is right ? what is Lisp string syntax for ?
Seems to be clear to me: the first one is correct, but the second one
also works, you're just specifying the same character twice, like in
`[^aa]'. So the elisp string would be "[^\\]". Do you know about
M-x re-builder?
Happy hacking!
Anselm
--
Anselm Helbig
mailto:anselm.helbig+news2009@googlemail.com
next parent reply other threads:[~2009-07-11 12:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.2276.1247310683.2239.help-gnu-emacs@gnu.org>
2009-07-11 12:27 ` Anselm Helbig [this message]
[not found] <mailman.2289.1247323589.2239.help-gnu-emacs@gnu.org>
2009-07-11 14:55 ` I can not understant a paragraph in Emacs Lisp Reference Teemu Likonen
2009-07-11 14:46 waterloo
2009-07-11 15:05 ` Drew Adams
2009-07-11 15:10 ` waterloo
-- strict thread matches above, loose matches on Subject: below --
2009-07-11 11:11 waterloo
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