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From: Ihor Radchenko <yantar92@gmail.com>
To: Alexandre Duret-Lutz <adl@lrde.epita.fr>
Cc: emacs-orgmode@gnu.org,  tec@tecosaur.com
Subject: Re: Org 9.5 broke the rendering of my SVG images
Date: Fri, 14 Oct 2022 16:17:28 +0800	[thread overview]
Message-ID: <875ygmzunb.fsf@localhost> (raw)
In-Reply-To: <87o7uhp1n7.fsf@lrde.epita.fr>

Alexandre Duret-Lutz <adl@lrde.epita.fr> writes:

> In Org 9.5, SVG images started being exported by the HTML exporter as
> <img> rather than <object>.
> The patch causing that was
>   https://list.orgmode.org/87k0pemj6d.fsf@gmail.com/T/
> with two arguments:
> 1) <object> do not have an alt attribute
> 2) <object> will not render some SVG file correctly if it has no viewBox
>    (I'm assuming that the issue shown in that message is a missing viewBox).
> The reason I've noticed this change is that it broke my web pages.  On
> my pages, I use SVG to display many automata, and they all share a
> common stylesheet.  That stylesheet is not inlined into the SVG, rather,
> it is a separate file included in the SVG files with
>   <?xml-stylesheet href="filename.css" type="text/css"?>
> so that the browser only need to download it once.
> Infortunately, <img> does not allow external stylesheets to be
> processed, so my stylesheets are now ignored.  Note that one can also
> build SVG images that include other SVG images, or SVG images that have
> animations that start when you hover on some elements.  All those
> usages would break with <img>.
> I've seen that very issue was discussed back in 2016
> https://list.orgmode.org/871t2iq353.fsf@iki.fi/T/
> where Christian Moe pointed out exactly this:
>> (2) You can also do other things with <object> that you cannot with
>> <img>, like manipulating the SVG with Javascript and styling it with
>> an external stylesheet (linked from the SVG, not the web page).
> So in the interest of allowing users to build documents where SVG
> files are not static, self-contained images, it seems to me that Org
> probably needs some way to specify whether SVG images should be
> exported as <img> or <object> (or maybe even inlined).

This is clearly a regression and should be fixed.

Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>

  reply	other threads:[~2022-10-14  8:32 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-12 14:17 Org 9.5 broke the rendering of my SVG images Alexandre Duret-Lutz
2022-10-14  8:17 ` Ihor Radchenko [this message]
2022-10-17 13:32   ` Chris Clark
2022-10-17 13:49     ` Timothy

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