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Re: question about frame local variable
From: |
Kenichi Handa |
Subject: |
Re: question about frame local variable |
Date: |
Thu, 30 Oct 2003 19:46:22 +0900 (JST) |
User-agent: |
SEMI/1.14.3 (Ushinoya) FLIM/1.14.2 (Yagi-Nishiguchi) APEL/10.2 Emacs/21.3 (sparc-sun-solaris2.6) MULE/5.0 (SAKAKI) |
In article <address@hidden>, address@hidden (Gerd Moellmann) writes:
>> I found that the above is not enough. It seems that the
>> display engine doesn't issue select-frame; i.e. provided
>> that there are two frames A and B, there is a case that the
>> display engine redisplays A while the selected frame is B.
>>
>> It means that even if we make such variables frame local
>> that affect the redisplaying (font-selection, etc), any
>> frame local bindings are just ignored.
>>
>> Gerd, do you remember this matter? Is my analysis correct?
> I think so; it matches what I remember. Local bindings are not
> supported for all redisplay variables. AFAIR, that has always
> been the case and isn't new in 21.
I see, thank you.
> Where it is supported, I think redisplay looks at frame
> parameters.
Yes, I noticed several Fassq (Qxxx, f->param_alist) in
xfaces.c and xdisp.c. I think we must do the similar thing for
variables that affect font selection.
> (BTW, calling select-frame in redisplay would almost certainly not be
> the right thing to do, which probably gets obvious when taking a look
> at what that function does.)
It seems so.
---
Ken'ichi HANDA
address@hidden