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More HTML/EPUB conversion issues: Repeated texts/enumerations
by Matthias Weber 13 Jul '25

13 Jul '25

Thanks to Hans for helping with the images. I ran into various other issues. When using enumerations, sometimes part of the text from a previous enumeration is repeated (usually math). I've attached a minimal example at the end. I am also struggling to get links within the HTML document to work, both for linking to enumerations and bibliography items—links to sections work. I will create a minimal example later. Then, is there a reason that -templates.css is not included in -div.html? This file contains, among other useful things, style tags for enumerations like description[detail=Theorem], div.description.Theorem { display: block ; } that can be used to style enumerations differently. Thanks (always), Matthias \usemodule[mathml] \setupbackend[export=yes,xhtml=yes] \setupenumerations [alternative=hanging, width=fit, right={~}, way=bysection, prefix=chapter, distance=0.5em, prefixsegments={chapter:section}] \defineenumeration[Theorem] [alternative=serried, width=fit, distance=.5\emwidth, text=Theorem, style=italic, title=yes, titlestyle=normal, prefix=yes, headcommand=\groupedcommand{}{.} ] \defineenumeration [Proof] [alternative=serried, width=fit, distance=\emwidth, text=Proof, number=no, headstyle=italic, headcommand=\groupedcommand{}{.}, title=yes, titlestyle=normal, closesymbol=\mathqed] \starttext \startsection[title=Introduction] \startTheorem[thm:euler] \startformula e^{\pi i}+1=0 \ . \stopformula \stopTheorem \startProof See (Euler1777). \stopProof \stopsection \stoptext

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Docker images
by Henning Hraban Ramm 13 Jul '25

13 Jul '25

Hi, esp. Max: the ConTeXt dockerfiles from “Island of TeX” (https://github.com/islandoftex/context) … – still distinguish MkIV beta/current – install modules via rsync also for LMTX which pulls in some outdated ones – use Debian instead of Alpine because Linux/MUSL binary wasn’t working at the time (but should now, otherwise compiling it on the fly is an option) Would it make sense to change this? Hraban

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Minimal example for image bug in xhtml export
by Matthias Weber 12 Jul '25

12 Jul '25

I minimized my example to the following. To have the image displayed in the html file (filename-div.html in the filename-export directory), you need to put hacker.jpg into filename-export/images). The problem appears also without the image present, the formula is covered by an image that shouldn’t be there. Notice too that the overline is present in the pdf, but not in the html. \usemodule[mathml] \setupexternalfigures[location=default] \setupbackend[export=yes,xhtml=yes] \setupexport [svgstyle=mathtest-style, hyphen=yes, width=60em] \starttext \subject{Introduction} \startparagraph \input knuth \stopparagraph \placefigure [force] [figure:configurations] {Some simple Image} {\externalfigure[hacker.jpg] [width=\textwidth]} \startparagraph Let $p$ and $q$ be two different points. The \emph{segment} $\overline{pq}$ connecting $p$ and $q$ is the set \startformula pq = \{(1-t) p + t q: t\in[0,1]\}\ . \stopformula \stopparagraph \stoptext Any help will be appreciated! Thanks, Matthias

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The size keyword in \fenced seems not working
by fv leung 12 Jul '25

12 Jul '25

The following code (copied from the math manual) doesn’t produce the intended results with the most recent version of ConTeXt: \starttext \startformula \fenced[bracket]{\frac{1 + x}{1 - x}} = \fenced[bracket][size=0]{\frac{1 + x}{1 - x}} = \fenced[bracket][size=1]{\frac{1 + x}{1 - x}} = \fenced[bracket][size=2]{\frac{1 + x}{1 - x}} = \fenced[bracket][size=3]{\frac{1 + x}{1 - x}} = \fenced[bracket][size=4]{\frac{1 + x}{1 - x}} \stopformula \stoptext What's the proper way of setting size in \fenced ? Thanks in advance. FV Leung

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More problems with html/epub export
by Matthias Weber 12 Jul '25

12 Jul '25

Hello, I am trying to get a longer set of notes, heavy on math and images, exported to epub. Currently, I am adapting the CSS style sheets, using the exported css sheets In combination with the exported -div.html file. So far, so good. But I ran into a bizarre issue with images randomly occurring in the HTML code, instead of formulas. This happens halfway into the document, so at the moment it isn't easy to provide a minimal example. Maybe the following is enough to resolve the issue: My ConTeXt code The \idx{segment} $pq$ connecting $p$ and $q$ is the set \startformula pq = \{(1-t) p + t q: t\in[0,1]\}\ . \stopformula is exported to the following in …-div.html: (I have highlighted the problematic image) The <div class="highlight idx">segment</div> <math data-lmtx-blob="122" data-lmtx-meaning="𝑝 times 𝑞" display="inline" displaystyle="false" xmlns="http://www.w3.org/1998/Math/MathML"> <mrow><mi>𝑝</mi><mi>𝑞</mi></mrow></math> connecting <math data-lmtx-blob="123" data-lmtx-meaning="𝑝" display="inline" displaystyle="false" xmlns="http://www.w3.org/1998/Math/MathML"><mi>𝑝</mi></math> and <math data-lmtx-blob="124" data-lmtx-meaning="𝑞" display="inline" displaystyle="false" xmlns="http://www.w3.org/1998/Math/MathML"> <mi>𝑞</mi></math> is the set <div class="formula"> <div class="formulacontent n-2" image="incidences-image-2"> <math data-lmtx-blob="125" data-lmtx-meaning="𝑝 times 𝑞 equals group group 1 minus 𝑡 end group times 𝑝 plus 𝑡 times 𝑞 : 𝑡 belongs to group 0 comma 1 end group end group times" display="block" displaystyle="true" xmlns="http://www.w3.org/1998/Math/MathML"> <mrow> <mi>𝑝</mi> <mi>𝑞</mi> <mo>=</mo> <mo stretchy="false">{</mo> <mo stretchy="false">(</mo> <mn>1</mn> <mo>−</mo> <mi>𝑡</mi> <mo stretchy="false">)</mo> <mi>𝑝</mi> <mo>+</mo> <mi>𝑡</mi> <mi>𝑞</mi> <mo>:</mo> <mi>𝑡</mi> <mo>∈</mo> <mo stretchy="false">[</mo> <mn>0</mn> <mo>,</mo> <mn>1</mn> <mo stretchy="false">]</mo> <mo stretchy="false">}</mo> <mi>.</mi> </mrow> </math></div> </div> That image "incidences-image-2” was used correctly many pages earlier. Manually deleting the highlighted text fixes the problem. I have many more senselessly repeated figures in the text like this, without a clue why they appear. They are certainly not in the PDF. Less dramatically, I also noticed that \overline doesn’t seem to appear in the HTML code. I am doing all this to produce accessible versions of my notes. I had hoped that going via HTML and possibly eventually Epub would be less of a nightmare than creating accessible PDFs, but maybe I was wrong…. Thanks for any help!

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Re: testing tagging for UA-2
by Max Chernoff 12 Jul '25

12 Jul '25

Hi Pablo, (resending since my attachments were too large for the mailing list the first time) I did some experiments yesterday, and I was able to produce a file (PDF and source attached) that validates as PDF/UA-2 with veraPDF and that Ulrike Fischer and David Carlisle (who work on the LaTeX accessibility) confirmed was actually accessible. I started from the "lpdf-tag-imp-testing.lmt" file that you posted on the mailing list a while back (I've attached my modified version), and I also had to modify "lpdf-tag.lmt" (also attached). To get the WTPDF tags, I also had to uncomment the "conformance" lines in both lpdf-fmt-imp-ua2.lmt and lpdf-fmt.lmt. Some notes: - I had to manually tag every paragraph with \startparagraph/\stopparagraph, which was annoying. - I had to hardcode mapping all sections to H1 for the validation to pass; this obviously won't work in real documents. There's code that purports to handle this at the end of "lpdf-tag-imp-testing.lmt", but I couldn't get it to work. - "\setupbackend[format=pdf/ua-2]" needs to come before "\setuptagging[state=start]", otherwise lots of stuff will silently break. - I've heard that it's actually usually better to put the TeX source in the Alt text for math instead of the current generated prose, because most people reading math are familiar with TeX anyways. - The file validates successfully, but there are lots of "Nested MCID" warnings. Thanks, -- Max

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Struggling with xml/epub export (where did the cow go?)
by Matthias Weber 11 Jul '25

11 Jul '25

I am still trying to get export-example.tex from the distribution to export to xml/html/epub. Thanks to all the help I got, I have the directory trees export-example-export and export-example-epub. The file export-example-div.html renders nicely in a web browser, except for the missing figures. I added mill and hacker to the images directory and got them to render, but the conversion of cow.pdf to svg I did not manage. Instead, when I run the epub conversion, the cow just disappears from the directory. This is obviously only the beginning of my problems. Where do I learn the basics of XML so that I can style the (say) the headers, theorems, exercises etc? Thanks for any hints! Matthias

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testing tagging for UA-2
by Pablo Rodriguez 10 Jul '25

10 Jul '25

Hi Hans & Mikael, for UA-1 one can modify tagging by copying and renaming `lpdf-tag-imp-crap.lmt`. Is there any way to do the same with UA-2? Many thanks for your help, Pablo

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regular online meet-up
by Henning Hraban Ramm 09 Jul '25

09 Jul '25

You’re invited to our regular online meet-up, this upcoming Wednesday, July 9th, 20:00 CEST (UTC+2) at https://lecture.senfcall.de/hen-rbr-rku-oke (same, but shorter: https://u.mtxrun.eu/ctxmtg) ConTeXt users of all levels are welcome! Looking forward to seeing you, Hraban (Same blurb as always:) [Howto] * No special software installation required; most modern browsers should work (WebRTC required). * Open the URL above, accept the privacy statement, * enter your name, * click "join" (or "start" if you’re the first), * click "with microphone", allow your browser to access it, check the audio. * Your microphone is muted if you join. Activate microphone and/or camera with the buttons at the bottom. * Minimize the default presentation with the "screen" button, bottom right. * If you’d like to share your screen or upload a file, you can make yourself the presenter: Click on your user name, change the setting, then you’ll see the "screen sharing" button beside the camera button; also there’s now "manage presentations" behind the "plus" button. Beware there is only one presenter at a time, so don’t kill someone else’s presentation. [Technical hints] * Sound is usually better if you use a headset (less noise for everyone). * Connection problems are mostly due to low bandwidth or high latency on your side, esp. with mobile connections. * Sometimes leaving and re-entering helps. * If audio/video doesn’t work for you, you can still use the text chat. * Screen sharing needs a lot of bandwidth. * BigBlueButton documentation applies: https://bigbluebutton.org/tutorials/ [Netiquette] * Please use a name that we recognize from here. Some feel uncomfortable with anonymous lurkers. * Mute your microphone while you’re not talking. * It’s nice to show your face at least when you join. * If there are connection problems, stop camera sharing. * The room is set to “everyone’s a moderator“, I trust you...

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no list method for \placecombinedlist[content]
by jbf 08 Jul '25

08 Jul '25

Strange issue that has just happened. I updated the latest ConTeXt [ConTeXt ver: 2025.07.07 23:34 LMTX fmt: 2025.7.8 ] and for some reason \placecombinedlist[content] is giving me a page full of 'no list method' instead of the contents. If I run the same file in an older version, I have no problem, and the Table of Contents appears as it should. I have made no changes to the file that worked perfectly beforehand. Why this 'no list method'? Julian

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