ntg-context April 2023

ntg-context@ntg.nl

52 participants
65 discussions

LuaMetaTeX doesn't find files when symlinked
by Max Chernoff 28 Apr '23

28 Apr '23

Hi Hans, With the LuaMetaTeX-based ConTeXt wrapper, it's not generally possible to run ConTeXt from a symlinked binary in another directory. This shows up if someone makes symlinks in "/usr/bin" so that they can avoid adding anything to their $PATH. If you make run a symlink to the LuaMetaTeX-based ConTeXt wrapper, it looks for texmfcnf.lua relative to the symlink location, not the symlink target. With the old LuaTeX/kpse-based wrapper, the script would look for texmfcnf.lua relative to the symlink target. I know that my description above is terrible, so here's a demo: $ bin=$(mtxrun --expand-var TEXMFOS | head -1)/* $ cd $(mktemp -d) $ ln -s $bin/luatex $bin/luametatex $bin/context $bin/context.lua $bin/mtxrun $bin/mtxrun.lua . $ ./context --nofile $ ./context --luatex --nofile Running the above commands used to work with the old LuaTeX/kpse-based wrapper, but it doesn't work any more. I was able to ""fix"" this by adding the lines if os.selfpath then environment.ownbin = lfs.symlinktarget(os.selfpath .. io.fileseparator .. os.selfname) environment.ownpath = environment.ownbin:match("^.*" .. io.fileseparator) else environment.ownpath = kpse.new("luatex"):var_value("SELFAUTOLOC") environment.ownbin = environment.ownpath .. io.fileseparator .. (arg[-2] or arg[-1] or arg[0] or "luatex"):match("[^" .. io.fileseparator .. "]*$") end to mtxrun.lua, right below the line package.loaded["data-ini"] = package.loaded["data-ini"] or true but this is obviously not a very good fix. There are some threads with more details at: https://tug.org/pipermail/tex-live/2023-March/049028.html https://gitlab.com/islandoftex/images/texlive/-/issues/30 Those links only discuss TL, but I get the same issue if I make a symlink to the standalone ConTeXt files. Thanks, -- Max

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update
by Hans Hagen 28 Apr '23

28 Apr '23

Hi, I uploaded a new version with some new features discussed at the end of this mail. - A next version of luatex will break context (format making etc) but the change is unavoidable because of other macro package demands wrt security (context does that differently). The low level start up command has been adapted so unless you update indepdently thinsg should work ok. Of course this has no consequences for lmtx. - I've done a bit of callback cleanup (like getting rid of some mkiv luatex left-overs). It should have no effect on regular usage. - There again a few improvements wrt math (this time dealing with accents artifacts in some fonts). We check all the free math fonts for potential issues and then try to fix it (read: deal with it). It's a lot of work but we're getting there. - A few reported buglets have been fixed. - The biggest addition is however a new number model. In metapost one can now use 'posit' (positfun instance) as number mode which will use (currently 32 bit but at some point 64 bit) posit unums. It's also bit of a playground because 32 bit posits are not more accurate than 64 bit doubles. It anyhow exposed some potential issues that we'll look into. - There's also a (again currently 32 bit) posit library at the Lua end as playground. - However, 32 bit posits come in handy at the tex end because they pack better accuracy in 32 bits than floats and it makes it possible to have native floats, so we have: \newfloat (uses \floatdef, register like \dimendef is used in \newdimen) \newposit (uses \positdef, like \dimensiondef etc) \floatexpr (like \numexpr) \iffloat (like \ifnum) (also \ifabsfloat and i'll add the others too) Actually it adds an extra range of registers so it bumps memory usage a bit. I'm considering lowering the number of registers (currently 64K per category) because after all, if 64K is not enough then we can as well stick to 32K or 16K (for some even less). There's always Lua for unlimited storage of quantities. So, \newfloat\fooA \scratchdimen=123.456pt\relax [\type{dim:} \the\scratchdimen==123.456pt]\par \fooA =123.456\relax [\type{pos:} \the\fooA ==123.456] \par \fooA =\scratchdimen\relax [\type{pos:} \the\fooA ==123.456] \par \scratchdimen=\fooA\relax [\type{dim:} \the\scratchdimen==123.456pt]\par \scratchdimen\dimexpr\fooA+10pt\relax[\type{dim:} \the\scratchdimen==133.456pt]\par produces [dim: 123.456pt==123.456pt] [pos: 123.45600128173828==123.456] [pos: 123.45599365234375==123.456] [dim: 123.456pt==123.456pt] [dim: 133.456pt==133.456pt] As you can see dimens will get mapped onto floats not as integers (scaled points) but in pt units. Counts stay numbers. I need to handle glue too (not yet done). In the future I might use this for fractions but there might be some rough ends so for now it's experimental. Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------

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Cron <context@zapf> /var/www/aanhet.net/context/bin/cron/context-mirror
by root＠ntg.nl 27 Apr '23

27 Apr '23

receiving incremental file list ./ ctan.lsr document-2.htm download-1.htm download-2.htm logo-ade.png logo-cts.png logo-pod.png rss.xml show-fil.pdf context/latest/ context/latest/cont-mpd.zip context/latest/cont-ppc.zip context/latest/cont-sci.zip context/latest/cont-tmf.zip context/latest/cont-tst.7z context/latest/cont-tst.tar.xz context/latest/cont-tst.zip sent 100,908 bytes received 21,237,423 bytes 4,741,851.33 bytes/sec total size is 448,578,693 speedup is 21.02 Running archiver: New dir: /var/www/aanhet.net/context//htdocs/archives/context-2023-04-27.18 120744599 /var/www/aanhet.net/context//htdocs/archives/context-2023-04-27.18/latest 126745317 /var/www/aanhet.net/context//htdocs/archives/context-2023-04-27.18/current 247494012 /var/www/aanhet.net/context//htdocs/archives/context-2023-04-27.18 247494012 total

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upload
by Hans Hagen 27 Apr '23

27 Apr '23

Hi, I uploaded the last of series 2.10.07 as prelude for bachotex. That one also can do this: \newfloat \MyFloat \MyFloat \pfsin \floatexpr 1.25 * \pfpi \relax \the\MyFloat \the \pfsin \floatexpr 1.25 * \pfpi \relax The syntax is like \numexpr and \dimexpr but the \pfsin (and other functions) are (as usual with these things) not real primitives but (\untraced) luacalls. Of course it is all still somewhat experimental but likely to stay ... Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------

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Cron <context@zapf> /var/www/aanhet.net/context/bin/cron/context-mirror
by root＠ntg.nl 27 Apr '23

27 Apr '23

receiving incremental file list ./ ctan.lsr document-2.htm download-1.htm download-2.htm logo-ade.png logo-cts.png logo-pod.png rss.xml show-fil.pdf context/latest/ context/latest/cont-mpd.zip context/latest/cont-ppc.zip context/latest/cont-sci.zip context/latest/cont-tmf.zip context/latest/cont-tst.7z context/latest/cont-tst.tar.xz context/latest/cont-tst.zip sent 100,914 bytes received 20,433,917 bytes 3,159,204.77 bytes/sec total size is 448,578,496 speedup is 21.84 Running archiver: New dir: /var/www/aanhet.net/context//htdocs/archives/context-2023-04-27.10 120743612 /var/www/aanhet.net/context//htdocs/archives/context-2023-04-27.10/latest 126745317 /var/www/aanhet.net/context//htdocs/archives/context-2023-04-27.10/current 247493025 /var/www/aanhet.net/context//htdocs/archives/context-2023-04-27.10 247493025 total

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Cron <context@zapf> /var/www/aanhet.net/context/bin/cron/context-mirror
by root＠ntg.nl 27 Apr '23

27 Apr '23

receiving incremental file list ./ ctan.lsr document-2.htm download-1.htm download-2.htm logo-ade.png logo-cts.png logo-pod.png rss.xml show-fil.pdf context/latest/ context/latest/cont-mpd.zip context/latest/cont-ppc.zip context/latest/cont-sci.zip context/latest/cont-tmf.zip context/latest/cont-tst.7z context/latest/cont-tst.tar.xz context/latest/cont-tst.zip sent 100,680 bytes received 22,125,091 bytes 3,419,349.38 bytes/sec total size is 448,578,908 speedup is 20.18 Running archiver: New dir: /var/www/aanhet.net/context//htdocs/archives/context-2023-04-27.00 120742673 /var/www/aanhet.net/context//htdocs/archives/context-2023-04-27.00/latest 126745317 /var/www/aanhet.net/context//htdocs/archives/context-2023-04-27.00/current 247492086 /var/www/aanhet.net/context//htdocs/archives/context-2023-04-27.00 247492086 total

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Font error in PDF using ConTeXt and Kepler typeface
by Werner Schmidt 26 Apr '23

26 Apr '23

Hi all, I'd like to use the commercial Adobe Kepler typeface (Kepler Std - version 2.020) in conTeXt (v2023-04-15) as text (serif) font. Although the font files are loaded correctly (see log below), the generated PDF is unreadable (see attached image). Notes: - Only serif font (keplerstd-light.otf) is not working. It's not embedded in the generated PDF. - italics and bold fonts are embedded and are rendered well - Can't provide font files because Kepler is a commercial typeface Do you have any ideas how to debug this issue? Thanks Werner log file: mkiv lua stats > loaded fonts: 10 files: fontawesome6freesolid900.otf, frutigernextpro-bold.otf, frutigernextpro-regular.otf, iosevka-term-ss09-light.ttf, keplerstd-light.otf, keplerstd-lightcapt.otf, keplerstd-lightit.otf, keplerstd-semibold.otf, latinmodern-math.otf, lmroman10-regular.otf mkiv lua stats > font engine: otf 3.133, afm 1.513, tfm 1.000, 30 instances, 18 shared in backend, 3 common vectors, 15 common hashes, load time 0.449 seconds Example: This text can't be read in PDF.par {it However, italics are working.}par {bold Also Bold and bfem BoldItalics!}par input{zapf}

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Filter Module with Openscad
by Jeroen 26 Apr '23

26 Apr '23

I am using OpenSCAD to create drawings with the filter module with the following MWE: \usemodule[filter] \defineexternalfilter[openscad] [filtercommand={/context/openscad/openscad -o \externalfilteroutputfile}, output={\externalfilterbasefile.png}, cache=force, readcommand=\ReadImage] \define[1]\ReadImage{\externalfigure[#1]} \starttext \startopenscad square(4,2); \stopopenscad \stoptext This works fine. I now want to use the following options added to the command line: --view axes,edges,scales --viewall When I create an Openscad file test.scad, I can run it fine with the following command line at a CLI window: openscad.com test.scad -o test.png --view axes,edges,scales --viewall When I add this to the filtercommand as following [filtercommand={/context/openscad/openscad -o \externalfilteroutputfile --view axes,edges,scales --viewall} I cannot get it to run. Is there anything I am missing? Thanks Jeroen

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Numbered Itemlist With Interruption
by Michael Urban 26 Apr '23

26 Apr '23

I am trying to have two numbered itemizations, with a paragraph in between, such that the second list starts where the first left off, without having to manually calculate the new start point. The following does not work, and I do not understand why. Mike \starttext \definecounter[mynumber][] \startitemize[n] \item The first item. \item The second item \item Item number \currentitemnumber{}, the last one. \setcounter[mynumber][\currentitemnumber] \stopitemize The \type{\getnumber[mynumber]} value is \getnumber[mynumber]. \incrementcounter[mynumber] And now the big finish, start at \getnumber[mynumber]: \startitemize[n][start=\getnumber[mynumber]] % WHY DOES THIS FAIL? \item Picking up where we left off. \item And all is well. \stopitemize Done! \stoptext

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Idea for a shared repository.
by Pawel Urbanski 25 Apr '23

25 Apr '23

Dear Everyone, We currently have the Context Garden site, wiki and htis list for documentation and resources. There is a Github contextgarden organization that can host repositories. What about creating a repository called: 'templates' or 'resources' - we can figure out the exact name later. The idea behind it is to collect templates and examples that are scattered all over the web or in the list threads. The first example that comes to my mind is the type definition for a Roboto font I needed and other type scripts that can be useful for the community. Then there are templates for books, slides or documents. The Repository has a wiki where we could add some notes about more complex items. It is not about duplicating the Context garden site but to collect code in a place where we could gradually fix possible errors or introduce improvements. All the best, Pawel

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ntg-context April 2023