bug#64908: 29.1; svg parse failure

[Eli Zaretskii]

> Date: Fri, 4 Aug 2023 09:55:03 +0200
> Cc: 64908@debbugs.gnu.org
> From: David Ponce <da_vid@orange.fr>
> 
> On 04/08/2023 07:23, Eli Zaretskii wrote:
> >> Date: Thu, 3 Aug 2023 21:16:35 +0200
> >> From: David Ponce <da_vid@orange.fr>
> >>
> >> In case it could help, using emacs from master (see details at end
> >> below), with librsvg2-2.56.0-1.fc38.x86_64 I can insert-image
> >> dir-src-open.svg and dir-public-open.svg in the *scratch-buffer*
> >> without issue (see Screenshot1).
> >>
> >> However, the same failed using librsvg2-2.56.3-1.fc38.x86_64 (see
> >> Screenshot2).
> >>
> >> I did test also with some KDE breeze icons.
> >>
> >> No issue with librsvg2-2.56.0-1.fc38.x86_64.
> >>
> >> With librsvg2-2.56.3-1.fc38.x86_64 some icons works, some not (see an
> >> example in Screenshot3):
> >>
> >> /usr/share/icons/breeze/actions/22/go-next.svg doesn't work:
> >>
> [...]
> >>
> >> /usr/share/icons/breeze/actions/22/go-next.svg works:
> >>
> [...]
> >>
> >> As far as I can see, other applications (Gwenview, Geeqie, Firefox) don't 
> >> have
> >> problem to display the same images with librsvg2-2.56.3-1.fc38.x86_64 
> >> installed.
> > 
> > Thanks, this helps.
> > 
> > When an image fails to display, do you see any error messages from
> > librsvg?  Those are usually emitted to stderr, so perhaps you need to
> > run Emacs in a way that stderr is not discarded, but either shown on
> > the terminal or written to a file.
> 
> Hello ELi,
> 
> I don't see any message on stderr, but a bunch of messages:
> "Invalid image size (see ‘max-image-size’)" in the *Messages* buffer,
> probably related to the display of an invalid image (empty square)
> in the *scratch* buffer. Also, the result of image-size is not the
> expected image size (22x22 px in example). I attached a screenshot.

Thanks.  I hope this will help an SVG expert to figure out what's
going on with these images.

Alan, do you have time to look into this, per chance?