On 7/27/2025 12:38 AM, Matthias Weber wrote:
Hmm, when I try (as hacker.tex)
\setupexternalfigures[location=default]
\startsetups[document:start]
\setupinteraction[
title=\documentvariable{title},
author=\documentvariable{author},
]
\stopsetups
\setupbackend[export=yes,xhtml=yes]
\setupexport
[svgstyle=mathtest-style,
hyphen=yes,
width=60em]
the next upload will support the hyphen option (was disabled in lmtx
although we can actually do it there too)
\enabledirectives[export.css.hyphens=yes]
\enabledirectives[export.css.textwidth=100em]
\starttext
\placefigure
[force]
[figure:crc2]
{Hacker}
{\externalfigure[hacker.jpg][width=.6\textwidth,
alternativetext={
A lot of math: $\int_0^\infty e^{-x^2}\, dx=\frac12 \sqrt\pi$
}]}
\stoptext
The exported file hacker-div.html
— is missing something like <html lang="en" data-theme="light”>
— links only
<link type="text/css" rel="stylesheet" href=“styles/hacker-defaults.css" />
<link type="text/css" rel="stylesheet" href="styles/hacker-images.css" />
<link type="text/css" rel="stylesheet" href="styles/hacker-fonts.css" />
<link type="text/css" rel="stylesheet" href="styles/hacker-styles.css" />
but should also link to>
<link type="text/css" rel="stylesheet" href="styles/hacker-templates.css" />
ok, i'll add it
— has the following for the image
<div class="floatcontent"><div alt=" A lot of math: $\\\\int _0^\\\\infty e^{-x^2}\\\\, dx=\\\\frac 12 \\\\sqrt \\\\pi $ "
class="image label-hacker.jpg" id="Exporttest-image-1" image="Exporttest-image-1"><!--empty--></div></div>
This shows the image, but the alt tag is not readable. One can test this by
removing/renaming hacker.jpg from the images directory.
It seems the alt tag only works inside <img>. So changing <div alt …> <img alt …
> works.
It might break other things.
And then there is the question whether alt texts should contain math. It’s
probably best to just use plain text in alt texts.
indeed, Mikael and I were just discussing this and came to the
conclusion that it's way better to generate an accessible version
instead, so in the case of images, we just render the explanation and
export that .. there can be more to make the document more accessible
(more explicit labeling and such) as the intended audience deserves
better than the unpredictable
so: what qualifies for soem treatment
Hans
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