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bug#10178: 24.0.92; emacs -q frame too short for fancy splash image


From: Stephen Berman
Subject: bug#10178: 24.0.92; emacs -q frame too short for fancy splash image
Date: Sun, 04 Dec 2011 15:09:41 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.92 (gnu/linux)

On Sun, 4 Dec 2011 14:42:56 +0100 Jan Djärv <jan.h.d@swipnet.se> wrote:

> 1 dec 2011 kl. 09:45 skrev Stephen Berman:
>
>> Starting with -q does not show the fancy splash image; `M-:
>> (window-height)' returns 34.  If I start with -q -geometry 80x36 `M-:
>> (window-height)' returns 35 and the fancy splash image appears (though
>> with this height the last line of the splash screen is partially
>> truncated).  I think I started seeing this behavior during the last
>> pretest (24.0.91), but it might have been earlier.
>> 
>
> I see in startup.el:
>
> (defun use-fancy-splash-screens-p ()
>   "Return t if fancy splash screens should be used."
>   (when (and (display-graphic-p)
>              (or (and (display-color-p)
>                  (image-type-available-p 'xpm))
>                  (image-type-available-p 'pbm)))
>     (let ((frame (fancy-splash-frame)))
>       (when frame
>         (let* ((img (create-image (or fancy-splash-image
>                                       (if (and (display-color-p)
>                                                (image-type-available-p 'xpm))
>                                           "splash.xpm" "splash.pbm"))))
>                (image-height (and img (cdr (image-size img nil frame))))
>                ;; We test frame-height so that, if the frame is split
>                ;; by displaying a warning, that doesn't cause the normal
>                ;; splash screen to be used.
>                (frame-height (1- (frame-height frame))))
>           (> frame-height (+ image-height 19)))))))
>
> On my system, image-height becomes 14.466666666666667, so frame-height
> must be larger than 33.4666....
> 34 should fit.  Is image-size something else on your system?

Yes, 15.5 (image-size returns (38.57142857142857 . 15.5)), which means
the decremented frame-height should be > 34.5, so 34 is too small.  This
is with the font
-unknown-DejaVu Sans Mono-normal-normal-normal-*-12-*-*-*-m-0-iso10646-1,
which I've been using since well before the fancy splash image started
failing to be displayed.

Steve Berman





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