Re: address@hidden: Re: redisplay]

[Chong Yidong]

Richard Stallman <address@hidden> writes:

> Would someone please debug this, then ack?
>
> From: Stephen Berman <address@hidden>
> Subject: Re: redisplay
> To: address@hidden
>
> On Sat, 21 Apr 2007 20:47:19 -0400 Richard Stallman <address@hidden> wrote:
>
>>     (progn (new-frame)
>>         (redisplay t)
>>         (x-popup-dialog t '("Foo" ("Bar" . 1))))
>>
>> I tried this but it didn't fail -- the new frame was not empty.
>
> In my Emacs (GNU Emacs 22.0.98.2 (i686-pc-linux-gnu, GTK+ Version
> 2.10.6) of 2007-04-20 on escher) I see two behaviors:
>
> 1. Evalling the above sexp in *scratch* with C-j or in any buffer with
> M-: results in what the OP reported: "produces a blank frame while the
> popup dialog is active, i.e., (redisplay t) fails to wait for
> redisplay to finish."
>
> 2. Evalling the sexp with C-x C-e in any buffer results in what RMS
> reported. 

I believe this is because x-popup-dialog is handled with a GTK dialog
when you build under GTK, instead of using the Emacs redisplay engine.
So the behaviors are slightly different.  I don't think this
"problem"---if it's really a problem---is serious, and it certainly
shouldn't block the Emacs 22 release.