GNU bug report logs - #77841
Some svg image's black color is replaced by emacs's theme foreground color

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From: Alan Third <alan <at> idiocy.org>
To: Ihor Radchenko <yantar92 <at> posteo.net>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 77841 <at> debbugs.gnu.org, Billy Lei <LeiYiXia29 <at> outlook.com>
Subject: bug#77841: Some svg image's black color is replaced by emacs's theme foreground color
Date: Sat, 19 Apr 2025 11:01:12 +0100

On Sat, Apr 19, 2025 at 08:57:55AM +0000, Ihor Radchenko wrote:
> Alan Third <alan <at> idiocy.org> writes:
> 
> >> Yes, this is a feature.  I think to disable it, you need to include a
> >> :background setting in the image spec.  Alan, am I right?
> >
> > Yes, but in this particular case :foreground, probably.
> >
> > This behaviour is documented in the elisp manual under "SVG Images"
> > and is intended to make it easier to insert images into buffers so
> > they look like native widgets and the like.
> 
> I am still confused.
> Consider the attached svg image.
> 
> If I emacs -Q org-ltximg_404bde694c76aad6deecfc21e91c044a6afd7948.svg
> I see black background and white foreground.
> 
> If I
> 1. emacs -Q
> 2. (put-text-property 1 2 'display (create-image "/tmp/ltximg/org-ltximg_404bde694c76aad6deecfc21e91c044a6afd7948.svg"))
> I see red-ish background and white foreground.
> 
> Seemingly, background and foreground are inverted in the second case.
> 
> What am I missing?

The image draws a rectangle in the current foreground colour, black in
the first case and red in the second, and then fills the text with
"#fff".

    <g fill='#fff'>

-- 
Alan Third

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