I am learning context a little, so I can compare its output to HTML with tex4ht. I know very little about context.
I found the most simple example in this answer ConTeXt to HTML conversion for multiple math-heavy documents
I followed exactly the same instruction and using the same code shown there. All using TL 2023 on linux.
But when I view the generated HTML, I get this output
While the output that should show up, taken from the answer above is
The source code is exactly the same. Here it is again:
A.tex
\setupbackend[export=yes]
\starttext
Here is a sample of a math document which has some random $x = a +
\sqrt{\frac{1}{2}}$ inline math and some random display math
\startformula
A = B + C + \frac{A}{B} + \binom{C}{D}
\stopformula
\stoptext
I compiled the above using the command context A.tex
>context A.tex
resolvers | formats | executing runner 'run luametatex format': /usr/local/texlive/2023/bin/x86_64-linux/luametatex --jobname="./A.tex" --socket --shell-escape --fmt=/home/me/.texlive2023/texmf-var/luametatex-cache/context/1b4da46d1f340757f9984eae810b1464/formats/luametatex/cont-en.fmt --lua=/home/me/.texlive2023/texmf-var/luametatex-cache/context/1b4da46d1f340757f9984eae810b1464/formats/luametatex/cont-en.lui --c:currentrun=1 --c:fulljobname="./A.tex" --c:input="./A.tex" --c:kindofrun=1 --c:maxnofruns=9 --c:texmfbinpath="/usr/local/texlive/2023/bin/x86_64-linux"
system >
system > ConTeXt ver: 2023.05.05 18:36 LMTX fmt: 2023.10.5 int: english/english
system >
system > 'cont-new.mkxl' loaded
open source > level 1, order 1, name '/usr/local/texlive/2023/texmf-dist/tex/context/base/mkxl/cont-new.mkxl'
system > beware: some patches loaded from cont-new.mkiv
close source > level 1, order 1, name '/usr/local/texlive/2023/texmf-dist/tex/context/base/mkxl/cont-new.mkxl'
system > 'cont-sys.mkxl' loaded
open source > level 1, order 2, name '/usr/local/texlive/2023/texmf-dist/tex/context/texlive/cont-sys.mkxl'
open source > level 2, order 3, name '/usr/local/texlive/2023/texmf-config/tex/context/user/context-papersize.tex'
close source > level 2, order 3, name '/usr/local/texlive/2023/texmf-config/tex/context/user/context-papersize.tex'
close source > level 1, order 3, name '/usr/local/texlive/2023/texmf-dist/tex/context/texlive/cont-sys.mkxl'
system > files > jobname './A', input './A.tex', result './A'
fonts > latin modern fonts are not preloaded
languages > language 'en' is active
open source > level 1, order 4, name './A.tex'
backend > export > enabling export to xml
backend >
backend >
fonts > preloading latin modern fonts (second stage)
mathematics > tweak > 'LatinModernMath-Regular', size 6, math size 3, version 'Version 1.959' found, version 'Version 1.958' expected
fonts > 'fallback modern rm 12pt' is loaded
backend > export > fuzzy paragraph: (U+1D434) = (U+0003D) (U+1D435) + (U+0002B) (U+1D436) + (U+0002B) + (U+0002B)
backend > xmp > using file '/usr/local/texlive/2023/texmf-dist/tex/context/base/mkiv/lpdf-pdx.xml'
pages > flushing realpage 1, userpage 1, subpage 1
backend > export >
backend > export > exporting xml, xhtml, html and css files
backend > export >
backend > export > using cretated export path 'A-export'
backend > export > using cretated images path 'A-export'
backend > export > using cretated styles path 'A-export'
backend > export > adding css reference 'styles/A-defaults.css'
backend > export > adding css reference 'styles/A-images.css'
backend > export > adding css reference 'styles/A-styles.css'
backend > export > saving xml data in 'A-export/A-raw.xml'
backend > export > saving css image definitions in 'A-export/styles/A-images.css'
backend > export > saving css style definitions in 'A-export/styles/A-styles.css'
backend > export > saving css template in 'A-export/styles/A-templates.css'
backend > export > saving xhtml variant in 'A-export/A-tag.xhtml'
backend > export > saving specification in 'A-export/A-pub.lua'
backend > export > saving div based alternative in 'A-export/A-div.html'
backend > export >
backend > export > create epub with: mtxrun --script epub --make "A" [--purge --rename --svgmath]
backend > export >
close source > level 1, order 4, name './A.tex'
mkiv lua stats > used config file: selfautoparent:/texmf-dist/web2c/texmfcnf.lua
mkiv lua stats > used cache path: readable+writable: '/home/me/.texlive2023/texmf-var/luametatex-cache/context/1b4da46d1f340757f9984eae810b1464'
mkiv lua stats > resource resolver: loadtime 0.043 seconds, 1 scans with scantime 0.004 seconds, 0 shared scans, 15 found files, scanned paths: /mnt/g/public_html/styles/texmf
mkiv lua stats > stored bytecode data: 510 modules (0.119 sec), 105 tables (0.005 sec), 615 chunks (0.124 sec)
mkiv lua stats > traced context: maxstack: 1698, freed: 0, unreachable: 1698
mkiv lua stats > cleaned up reserved nodes: 74 nodes, 7 lists of 435
mkiv lua stats > node memory usage: 11 attribute, 1 glue, 122 gluespec, 3 kern, 645 mathspec, 2 penalty, 2 temp
mkiv lua stats > node list callback tasks: 16 unique task lists, 11 instances (re)created, 71 calls
mkiv lua stats > inserted spaces in output: 16
mkiv lua stats > used backend: pdf
mkiv lua stats > jobdata time: 0.000 seconds saving, 0.000 seconds loading
mkiv lua stats > callbacks: file: 110, saved: 238, direct: 3, function: 1086, value: 2, message: 0, bytecode: 615, late 0, total: 2054 (2054 per page)
mkiv lua stats > randomizer: resumed with value 0.47764243869862
mkiv lua stats > loaded patterns: en::1, load time: 0.000
mkiv lua stats > structure elements: 55 element chains identified
mkiv lua stats > loaded fonts: 2 files: latinmodern-math.otf, lmroman10-regular.otf
mkiv lua stats > font engine: otf 3.133, afm 1.513, tfm 1.000, 7 instances, 3 shared in backend, 3 common vectors, 0 common hashes, load time 0.092 seconds
mkiv lua stats > math tweaking time: 0.026 seconds, 12 math goodie tables
mkiv lua stats > font embedding time: 0.002 seconds, 2 fonts
mkiv lua stats > result saved in file: A.pdf, compresslevel 1, objectcompresslevel 3
mkiv lua stats > positions: 7 collected, 0 deltas, 2 shared partials, 2 partial entries
mkiv lua stats > used platform: linux-64, type: unix, binary subtree: bin
mkiv lua stats > used engine: luametatex version: 2.1008, functionality level: 20230426, format id: 689, compiler: gcc
mkiv lua stats > tex properties: 806391 hash slots used of 2097152, 50251 control sequences, approximate memory usage: 41 MB
mkiv lua stats > lua properties: engine: lua 5.4, used memory: 94 MB, ctx: 91 MB, max: 99 MB, symbol mask: utf (τεχ)
mkiv lua stats > runtime: 0.279 seconds, 1 processed pages, 1 shipped pages, 3.580 pages/second
system | total runtime: 0.290 seconds of 0.368 seconds
>
It then created a folder called A-export/ below where A.tex is.
>ls -lrt A-export
total 13
drwxrwxrwx 1 me autologin 0 Oct 10 01:12 images
-rwxrwxrwx 1 me autologin 1954 Oct 10 01:12 A-raw.xml
drwxrwxrwx 1 me autologin 0 Oct 10 01:12 styles
-rwxrwxrwx 1 me autologin 1962 Oct 10 01:12 A-tag.xhtml
-rwxrwxrwx 1 me autologin 432 Oct 10 01:12 A-pub.lua
-rwxrwxrwx 1 me autologin 2185 Oct 10 01:12 A-div.html
And here is the A-div.html file. You see, it has funny characters
>cat A-export/A-div.html
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<!--
input filename : A
processing date : 2023-10-10 01:12:39-05:00
context version : 2023.05.05 18:36
exporter version : 0.35
-->
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:math="http://www.w3.org/1998/Math/MathML">
<head>
<meta charset="utf-8"/>
<title>A</title>
<link type="text/css" rel="stylesheet" href="styles/A-defaults.css" />
<link type="text/css" rel="stylesheet" href="styles/A-images.css" />
<link type="text/css" rel="stylesheet" href="styles/A-styles.css" />
</head>
<body>
<div class="document" xmlns="http://www.pragma-ade.com/context/export">
<div class="warning">Rendering can be suboptimal because there is no default/fallback css loaded.</div>
<div>
Here is a sample of a math document which has some random <math display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi></mi><mo>=</mo><mi></mi><mo>+</mo><msqrt><!-- begin m:mrow --><!-- begin m:mrow --><mfrac><mrow><mn>1</mn><merror detail="rule"> </merror></mrow><mrow><merror detail="rule"> </merror><mn>2</mn></mrow></mfrac><!-- end m:mrow --><!-- end m:mrow --></msqrt></mrow></math>⁄inline math and some random display math
<div class="formula">
<div class="formulacontent n-1">
<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
<mrow>
<mi></mi>
<mo>=</mo>
<mi></mi>
<mo>+</mo>
<mi></mi>
<mo>+</mo>
<!-- begin m:mrow -->
<mfrac>
<!-- begin m:mrow -->
<mi></mi>
<!-- end m:mrow -->
<!-- begin m:mrow -->
<mi></mi>
<!-- end m:mrow -->
</mfrac>
<!-- end m:mrow -->
<mo>+</mo>
<mrow>
<!-- begin m:mo --><mo>(</mo><!-- end m:mo -->
<mfrac>
<!-- begin m:mrow -->
<mi></mi>
<!-- end m:mrow -->
<!-- begin m:mrow -->
<mi></mi>
<!-- end m:mrow -->
</mfrac>
<!-- begin m:mo --><mo>)</mo><!-- end m:mo -->
</mrow>
</mrow>
</math>
</div>
</div>
</div>
</div>
</body>
</html>
These funny characters are also in the xml file generated:
>cat A-export/A-raw.xml
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!--
input filename : A
processing date : 2023-10-10 01:12:39-05:00
context version : 2023.05.05 18:36
exporter version : 0.35
-->
<?xml-stylesheet type="text/css" href="styles/A-defaults.css" ?>
<?xml-stylesheet type="text/css" href="styles/A-images.css" ?>
<?xml-stylesheet type="text/css" href="styles/A-styles.css" ?>
<document context="2023.05.05 18:36" date="2023-10-10 01:12:39-05:00" file="A" language="en" title="A" version="0.35" xmlns:m="http://www.w3.org/1998/Math/MathML">
Here is a sample of a math document which has some random <m:math display="inline"><m:mrow><m:mi></m:mi><m:mo>=</m:mo><m:mi></m:mi><m:mo>+</m:mo><m:msqrt><!-- begin m:mrow --><!-- begin m:mrow --><m:mfrac><m:mrow><m:mn>1</m:mn><m:merror detail="rule"> </m:merror></m:mrow><m:mrow><m:merror detail="rule"> </m:merror><m:mn>2</m:mn></m:mrow></m:mfrac><!-- end m:mrow --><!-- end m:mrow --></m:msqrt></m:mrow></m:math>⁄inline math and some random display math
<formula>
<formulacontent n="1">
<m:math display="block">
<m:mrow>
<m:mi></m:mi>
<m:mo>=</m:mo>
<m:mi></m:mi>
<m:mo>+</m:mo>
<m:mi></m:mi>
<m:mo>+</m:mo>
<!-- begin m:mrow -->
<m:mfrac>
<!-- begin m:mrow -->
<m:mi></m:mi>
<!-- end m:mrow -->
<!-- begin m:mrow -->
<m:mi></m:mi>
<!-- end m:mrow -->
</m:mfrac>
<!-- end m:mrow -->
<m:mo>+</m:mo>
<m:mrow>
<!-- begin m:mo --><m:mo>(</m:mo><!-- end m:mo -->
<m:mfrac>
<!-- begin m:mrow -->
<m:mi></m:mi>
<!-- end m:mrow -->
<!-- begin m:mrow -->
<m:mi></m:mi>
<!-- end m:mrow -->
</m:mfrac>
<!-- begin m:mo --><m:mo>)</m:mo><!-- end m:mo -->
</m:mrow>
</m:mrow>
</m:math>
</formulacontent>
</formula>
</document>
>
I tried Chrome browser and Brave browsers, all on windows 10. I also tried firefox on linux. This is what it shows
>context --version
mtx-context | ConTeXt Process Management 1.04
mtx-context |
mtx-context | main context file: /usr/local/texlive/2023/texmf-dist/tex/context/base/mkiv/context.mkiv
mtx-context | current version: 2023.05.05 18:36
mtx-context | main context file: /usr/local/texlive/2023/texmf-dist/tex/context/base/mkxl/context.mkxl
mtx-context | current version: 2023.05.05 18:36
The question is: How to get rid of these characters? Am I doing anything wrong? What is the canonical way to convert context latex file to HTML if not the above?
