GNU bug report logs - #22230
25.1.50; Emacs doesn't understand (some) SVG images

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 25.1.50; Emacs doesn't understand (some) SVG images
Date: Thu, 24 Dec 2015 14:12:44 +0100

[Message part 1 (text/plain, inline)]

If I view the following in Firefox, I get a pretty image saying "NRK":

[a.svg (image/svg+xml, attachment)]

[Message part 3 (text/plain, inline)]

If I open it in Emacs, I get a blank image that has the correct width
and height.  Either this is due to ImageMagick not understanding
something, or there's something Emacs does wrong here...



In GNU Emacs 25.1.50.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.16.7)
 of 2015-12-17
Repository revision: 23b5c22703eeee7b4fe6608ce12ffe3b87794933
Windowing system distributor 'The X.Org Foundation', version 11.0.11702000
System Description:	Ubuntu 15.10

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11

Important settings:
  value of $LC_MONETARY: nb_NO.UTF-8
  value of $LC_NUMERIC: nb_NO.UTF-8
  value of $LC_TIME: nb_NO.UTF-8
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: Emacs-Lisp

Minor modes in effect:
  diff-auto-refine-mode: t
  erc-list-mode: t
  erc-menu-mode: t
  erc-autojoin-mode: t
  erc-ring-mode: t
  erc-networks-mode: t
  erc-track-mode: t
  erc-track-minor-mode: t
  erc-match-mode: t
  erc-button-mode: t
  erc-netsplit-mode: t
  erc-pcomplete-mode: t
  erc-fill-mode: t
  erc-stamp-mode: t
  erc-irccontrols-mode: t
  erc-noncommands-mode: t
  erc-move-to-prompt-mode: t
  erc-readonly-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t

Recent messages:
Quit
t
Type C-x 1 to delete the help window.
x
Quit
Mark set
Quit
x
t
Making completion list...

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/home/larsi/mgnus/lisp/utf7 hides /home/larsi/src/emacs/trunk/lisp/gnus/utf7
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/home/larsi/mgnus/lisp/gnus-dired hides /home/larsi/src/emacs/trunk/lisp/gnus/gnus-dired
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/home/larsi/mgnus/lisp/nnvirtual hides /home/larsi/src/emacs/trunk/lisp/gnus/nnvirtual
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/home/larsi/mgnus/lisp/gnus-eform hides /home/larsi/src/emacs/trunk/lisp/gnus/gnus-eform
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/home/larsi/mgnus/lisp/rfc2045 hides /home/larsi/src/emacs/trunk/lisp/gnus/rfc2045
/home/larsi/mgnus/lisp/gnus-picon hides /home/larsi/src/emacs/trunk/lisp/gnus/gnus-picon
/home/larsi/mgnus/lisp/gnus-delay hides /home/larsi/src/emacs/trunk/lisp/gnus/gnus-delay
/home/larsi/mgnus/lisp/gnus-ems hides /home/larsi/src/emacs/trunk/lisp/gnus/gnus-ems
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Features:
(shadow emacsbug eieio-opt speedbar sb-image ezimage dframe nxml-uchnm
rng-cmpct rng-nxml rng-valid rng-loc rng-uri rng-parse nxml-parse
rng-match rng-pttrn nxml-ns nxml-mode nxml-outln nxml-rap nxml-util
nxml-glyph nxml-enc xmltok calc calc-loaddefs calc-macs pulse xref
project view sgml-mode vc-bzr vc-src vc-sccs vc-svn vc-cvs vc-rcs vc-dir
ewoc noutline outline dired-aux log-edit pcvs-util bug-reference
whitespace vc vc-dispatcher vc-git diff-mode easy-mmode map find-func
canlock doc-view image-mode mailalias smtpmail sendmail ecomplete
misearch multi-isearch timezone eww copyright erc-list erc-menu erc-join
erc-ring erc-networks erc-track erc-match erc-button erc-netsplit
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Memory information:
((conses 16 614737 79342)
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 (buffers 976 99)
 (heap 1024 198384 61945))

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #8 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Zack Piper <zack <at> apertron.net>
To: bug-gnu-emacs <at> gnu.org
Subject: Re: bug#22230: 25.1.50; Emacs doesn't understand (some) SVG images
Date: Thu, 24 Dec 2015 13:22:05 +0000

Could you try converting the SVG file to a PNG, to see if it's
ImageMagick's problem, the following should suffice:

    convert file.svg -o file.png

If resulting PNG is the same as displayed in Emacs then try installing
Inkscape; ImageMagick has not got the best support for SVG, but
obviously an SVG editor (Inkscape) does. Because of that ImageMagick
uses Inkscape to convert the SVG if Inkscape is found.

-- 
Zack Piper <zack <at> apertron.net> http://apertron.net

Message #11 received at 22230 <at> debbugs.gnu.org (full text, mbox):

From: Stephen Berman <stephen.berman <at> gmx.net>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 22230 <at> debbugs.gnu.org
Subject: Re: bug#22230: 25.1.50; Emacs doesn't understand (some) SVG images
Date: Thu, 24 Dec 2015 15:35:05 +0100

On Thu, 24 Dec 2015 14:12:44 +0100 Lars Ingebrigtsen <larsi <at> gnus.org> wrote:

> If I view the following in Firefox, I get a pretty image saying "NRK":
[...]
> If I open it in Emacs, I get a blank image that has the correct width
> and height.  Either this is due to ImageMagick not understanding
> something, or there's something Emacs does wrong here...

I know nothing about either SVG images or ImageMagick, but both Zack
Piper's suggestion to try converting to PNG and experimentation with the
image source show that the problem is indeed ImageMagick, specifically,
it appears not to process the `fill' attribute value "currentColor":
after changing the value to e.g. "blue" or "red" or removing the
attribute-value pair altogether, then ImageMagick (and hence also Emacs
built with ImageMagick support) displays the image.

Steve Berman

Message #14 received at 22230 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Stephen Berman <stephen.berman <at> gmx.net>
Cc: 22230 <at> debbugs.gnu.org
Subject: Re: bug#22230: 25.1.50; Emacs doesn't understand (some) SVG images
Date: Sun, 27 Dec 2015 08:02:06 +0100

Stephen Berman <stephen.berman <at> gmx.net> writes:

> I know nothing about either SVG images or ImageMagick, but both Zack
> Piper's suggestion to try converting to PNG and experimentation with the
> image source show that the problem is indeed ImageMagick, specifically,
> it appears not to process the `fill' attribute value "currentColor":
> after changing the value to e.g. "blue" or "red" or removing the
> attribute-value pair altogether, then ImageMagick (and hence also Emacs
> built with ImageMagick support) displays the image.

I guess this should be reported to the ImageMagick people, but I'm
unable to find their bugtracker or mailing list...  Anybody?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #17 received at 22230 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: stephen.berman <at> gmx.net, 22230 <at> debbugs.gnu.org
Subject: Re: bug#22230: 25.1.50; Emacs doesn't understand (some) SVG images
Date: Sun, 27 Dec 2015 17:57:44 +0200

> From: Lars Ingebrigtsen <larsi <at> gnus.org>
> Date: Sun, 27 Dec 2015 08:02:06 +0100
> Cc: 22230 <at> debbugs.gnu.org
> 
> Stephen Berman <stephen.berman <at> gmx.net> writes:
> 
> > I know nothing about either SVG images or ImageMagick, but both Zack
> > Piper's suggestion to try converting to PNG and experimentation with the
> > image source show that the problem is indeed ImageMagick, specifically,
> > it appears not to process the `fill' attribute value "currentColor":
> > after changing the value to e.g. "blue" or "red" or removing the
> > attribute-value pair altogether, then ImageMagick (and hence also Emacs
> > built with ImageMagick support) displays the image.
> 
> I guess this should be reported to the ImageMagick people, but I'm
> unable to find their bugtracker or mailing list...  Anybody?

I don't think this is an ImageMagick problem, because I see the same
issue in an Emacs compiled without ImageMagick (but with librsvg).  So
I'm guessing that this is some bug or missing feature in librsvg.

Message #20 received at 22230 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: stephen.berman <at> gmx.net, 22230 <at> debbugs.gnu.org
Subject: Re: bug#22230: 25.1.50; Emacs doesn't understand (some) SVG images
Date: Sun, 27 Dec 2015 17:22:29 +0100

Eli Zaretskii <eliz <at> gnu.org> writes:

> I don't think this is an ImageMagick problem, because I see the same
> issue in an Emacs compiled without ImageMagick (but with librsvg).  So
> I'm guessing that this is some bug or missing feature in librsvg.

Ok, I'll report it to the librsvg people, who seem to live here:

https://wiki.gnome.org/Projects/LibRsvg

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #23 received at 22230 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: stephen.berman <at> gmx.net, 22230 <at> debbugs.gnu.org
Subject: Re: bug#22230: 25.1.50; Emacs doesn't understand (some) SVG images
Date: Sun, 27 Dec 2015 17:49:01 +0100

Lars Ingebrigtsen <larsi <at> gnus.org> writes:

> Eli Zaretskii <eliz <at> gnu.org> writes:
>
>> I don't think this is an ImageMagick problem, because I see the same
>> issue in an Emacs compiled without ImageMagick (but with librsvg).  So
>> I'm guessing that this is some bug or missing feature in librsvg.
>
> Ok, I'll report it to the librsvg people, who seem to live here:
>
> https://wiki.gnome.org/Projects/LibRsvg

Reported on desktop-devel-list <at> gnome.org, so I'm closing this bug report.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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