From: Lennart Borgman <lennart.borgman@gmail.com>
To: Alan Mackenzie <acm@muc.de>
Cc: emacs-devel@gnu.org
Subject: Re: Is there a "selective setq locator/highlighter" anywhere?
Date: Fri, 23 Jan 2009 16:36:21 +0100 [thread overview]
Message-ID: <e01d8a50901230736t1364bcf3xab2de6d4ff394ac6@mail.gmail.com> (raw)
In-Reply-To: <20090123154150.GD3056@muc.de>
On Fri, Jan 23, 2009 at 4:41 PM, Alan Mackenzie <acm@muc.de> wrote:
> On Thu, Jan 22, 2009 at 02:44:11PM +0100, Lennart Borgman wrote:
>> On Thu, Jan 22, 2009 at 2:54 PM, Alan Mackenzie <acm@muc.de> wrote:
>> > Hi, Emacs!
>
> [ .... ]
>
>> > I would like a tool which would highlight these:
>
>> > (setq foo bar
>> > c-state-cache (cdr c-state-cache))
>> > (setcar c-state-cache (caar c-state-cache))
>
>> Can't you catch this with a regexp? (And I never understood what the
>> multi setq is good for.)
>
> A regexp will only work in practice, sort of, not in theory. In
> particular, regexps (which are mathematically equivalent to finite state
> machines) can't parse arbitrarily nested structures (for which one needs
> a push-down automaton or suchlike.
I believe saving state is not needed here. Can't you use something like
(setq \(\w+ \w+\)*[ \t\n\r]+?c-state-cache
next prev parent reply other threads:[~2009-01-23 15:36 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-22 13:54 Is there a "selective setq locator/highlighter" anywhere? Alan Mackenzie
2009-01-22 13:44 ` Lennart Borgman
2009-01-22 16:23 ` Stefan Monnier
2009-01-23 15:41 ` Alan Mackenzie
2009-01-23 15:36 ` Lennart Borgman [this message]
2009-01-23 16:12 ` Lennart Borgman
2009-01-22 14:49 ` Stefan Monnier
2009-01-22 18:06 ` Davis Herring
2009-01-23 15:58 ` Is there a "selective setq locator/highlighter" anywhere? There is now! Alan Mackenzie
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