From: "rgb" <rbielaws@i1.net>
Subject: Re: outrageous comment syntax
Date: 1 Nov 2005 15:36:54 -0800 [thread overview]
Message-ID: <1130888214.707028.123130@g14g2000cwa.googlegroups.com> (raw)
In-Reply-To: <mailman.12863.1130387573.20277.help-gnu-emacs@gnu.org>
Ian Zimmerman wrote:
> comment-start-skip's value is
> "\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\);+ *"
> Local in buffer simple-haskell.el; global value is nil
>
> Documentation:
> *Regexp to match the start of a comment plus everything up to its body.
> If there are any \(...\) pairs, the comment delimiter text is held to begin
> at the place matched by the close of the first pair.
>
>
> However, I have a language with two comment syntaxes, one of which
> depends on leading context and the other doesn't. How in the world can
> I set this variable properly? The context must be within the first
> group, and it cannot be :-(
When you san "cannot be" I assume you mean that use of shy groups
(?: ...) is insufficient to your needs?
I suggested a generalized fix for problems such as this a couple
months ago. I'm not sure how to tell if it was dismissed, or if it's
in some state of analysis or even implementation.
Basically it involved a seemingly simple change to regexp primatives
to accept symbols as well as strings. Accepting a symbol was a
compromise to my original suggestion of allowing functions to be
passed which apparently introduces problems.
The idea is to make regexp handling work more like font-lock. With
font-lock routines, anywhere a regexp is legal you can pass a function
which is expected to behave like re-search... When I say `behave
like' I mean in the way it leaves point, returns t or nil depending on
success and setting of match-data.
This would give everyone with problems such as this the ability to
simply code a custom solution without having to hack up an otherwise
useful package that simply needs search results to do it's job.
next prev parent reply other threads:[~2005-11-01 23:36 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.12863.1130387573.20277.help-gnu-emacs@gnu.org>
2005-11-01 4:29 ` outrageous comment syntax Stefan Monnier
2005-11-01 23:36 ` rgb [this message]
2005-11-03 3:50 ` Ian Zimmerman
2005-11-03 16:07 ` Stefan Monnier
2005-10-27 4:21 Ian Zimmerman
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