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Re: using special-display-regexps

From: Kevin Rodgers
Subject: Re: using special-display-regexps
Date: Fri, 18 Jun 2004 09:34:30 -0600
User-agent: Mozilla/5.0 (X11; U; SunOS i86pc; en-US; rv: Gecko/20020406 Netscape6/6.2.2

Mathias Dahl wrote:
> Michael Slass <address@hidden> writes:
>>>I'm trying to teach emacs to treat some buffers in a special way using
>>>this code that is supposed to work:
>>>(setq special-display-regexps
>>>     '(("jabber-chat"
>>>     ((top . 10) (height . 5) (left . 200)))))
>>>In the documentation string thew following can be seen:
>>> *List of regexps saying which buffers should have their own special
>>> frames.  If a buffer name matches one of these regexps, it gets its
>>> own frame.  Displaying a buffer whose name is in this list makes a
>>> special frame for it using `special-display-function'.
>>> An element of the list can be a list instead of just a string.
>>> There are two ways to use a list as an element:
>>> In the first case, FRAME-PARAMETERS are used to create the frame.
>>>It works only half way, emacs opens up matching buffers in a new
>>>frame, but the supplied frame parameters is not applied.
>>The frame parameters should each be elements at the same level as
>>"jabber-chat", rather than in their own enclosing list, as you've got it.
>>Also, it's better to use (add-to-list ...) rather than setq in this
>>context, because setq will clobber anything that's already there.
>>Put those together, and I think you get something like this:
>>(add-to-list 'special-display-regexps
>>      '("jabber-chat" (top . 10) (height . 5) (left . 200)))
> Aaaaaah! Yes, that did the trick! Is this just a problem with me
> or could the documentation be more clear on this subject? I have
> fiddles with frame parameters from time to time and then I had
> always needed to enclose them in their own list. This is the
> reason I thought I had to do the same now.

Yes, I think the correct way to denote that data structure would be:

(REGEXP . FRAME-PARAMETERS)     ; FRAME-PARAMETERS is an association list
                                ; of (PARAMETER . VALUE) conses



Kevin Rodgers

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