Re: Emacs and ImageMagick-7 issues

[Angelo Graziosi <angelo.graziosi@alice.it>]

OK, now I have some more news.

Start Emacs and visit a PNG or JPG etc, file. For example foo-01.png. It 
is displayed correctly and fitted to the windows *width*. Now do the 
same with another graphical file. For example foo-02.png. It also is 
displayed correctly and fitted to the window WIDTH.

Close foo-02.png and for foo-01.png click Image - Fit to Window Height. 
It complains with a BELL sound and with the message:

>
> Assertion failed: (= (cdr size) (- (nth 3 (window-inside-pixel-edges))
> (nth 1 (window-inside-pixel-edges)))), 821, 814
> user-error: Minibuffer window is not active

but the file is displayed correctly, at least in appearance! If now one 
re-visit foo-02.png it is visited in Fundamental mode and with the message:

> Cannot display image: ((= (cdr size) (- (nth 3
> (window-inside-pixel-edges)) (nth 1 (window-inside-pixel-edges)))) 821 814)

It seems that this build of Emacs does not like "Image - Fit to Window 
Height". The graphical format (PNJ, JPG..) seems irrelevant..

I did the same steps with my build on GNU/Linux Mint 18.1, on which 
there is installed ImageMagick-6 not -7. On this system all works as 
expected without errors/issues...

>
> Ciao,
>  Angelo.