September 2024 - ntg-context - NTG Mailing Lists

Why does text within a very simple xtable seem to not want to take up a lot of free space?
by Felix 24 Sep '24

24 Sep '24

\setuppapersize[letter][ letter ] \setuplayout[ backspace=0.5in, topspace=0.0in, header=.5in, % No headers footer=.5in, % Space for the footer width=middle, height=middle, ] \setupbodyfont[12pt] \starttext \startxtable[frame=off,topframe=on,bottomframe=on,option=fixed,width=1tw,align=middle,] \startxrow \startxcell {\tfa\setsmallcaps \startquotation Excellence is not a skill, it's an attitude. \stopquotation - Ralph Marston } \stopxcell \stopxrow \stopxtable \stoptext inputting this code into ConTeXt LMTX 2024 will show you that text after \stopquotation will make - Ralph Marson go into a new line, but there is so much text on the sides beside the first line, that it makes me wonder why the 2nd line was even made. Did I do something wrong with my code?

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images with alt text
by Steffen Wolfrum 23 Sep '24

23 Sep '24

Hi, as publishing houses (at least in Germany) are forced to provide «alt text» with their PDF-publications (from June 2025 on), I need to know how «images with alternate text» (https://en.wikipedia.org/wiki/Alt_attribute) are typeset with ConTeXt LMTX. In HTML it looks like this: <img src="example.jpg" alt="Example text"> What is the equivalent in ConTeXt LMTX? Yours, Steffen

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LMTX and PDF document form German »Bundesgesetzblatt«
by Pablo Rodriguez 23 Sep '24

23 Sep '24

Dear list, for some reason unknown to me, LMTX has problems with PDF documents comming form the German official gazzette. http://www.bgbl.de/xaver/bgbl/start.xav?startbk=Bundesanzeiger_BGBl&jumpTo=… contains one of the documents and here is a minimal sample: \setuplayout[page] \starttext \externalfigure[bgbl_Bundesgesetzblatt Teil I_2022_Nr. 20 vom 22.06.2022_bgbl122s0928.pdf] \stoptext The source above distorts the page presentation with LMTX, but it is perfectly fine with LuaTeX. Could anyone confirm the issue? Many thanks for your help, Pablo

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How to tell a single *.tex file to produce separate PDFs?
by Joel 23 Sep '24

23 Sep '24

I have a document that's quite long. It uses a recurse function, a bit like this: \starttext \dostepwiserecurse{1}{180}{1}{% \input chapter\recurselevel } \stoptext That produces 180 chapters of content. Anyway, my boss is upset she has to use a table of contents to navigate to the page she wants, and so wants me to split the file into 180 separate files, which somehow is going to be easier to look at. Honestly, she probably still won't ever actually look at it, but that's her requirement. The problem is, I've been splitting the file by using Print --> PDF and choosing a custom print range, and then saving it. If I ned to repeat that 180 times, it not only will have errors, but probably take 5-10 hours. Is there something I can put, like \breakpdf or something that will tell it to start a new PDF file? They can be named something like file1.pdf, file2.pdf, etc. \starttext \dostepwiserecurse{1}{136}{1}{% \input chapter\recurselevel \breakpdf } \stoptext The perhaps "obvious" answer is just make 180 *.tex files, but since the minimal example above is like 0.01% of the complexity of the real file, that isn't so easy... --Joel

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appendaction in "shipouts" "after" fails in the latest version
by 黄复雄 23 Sep '24

23 Sep '24

Hello, dear Hans. I have a Lua module that doesn't work in the latest version 2024.08.16 16:30. After investigation, I found that the errors first occurred in the appendaction. It could be appended normally in the version 2024.04.01 08:59, but failed in the latest version. So, I made a minimum runnable example for the appendaction problem, mini-try.lmtx, as ```ConTeXt \startluacode Moduledata = Moduledata or {} Moduledata.vtypeset = Moduledata.vtypeset or {} function Moduledata.vtypeset.rotate_all1(head) print(">>>>>> HERE IS ROTATE_ALL1") return head, done end function Moduledata.vtypeset.rotate_all2(head) print(">>>>>> HERE IS ROTATE_ALL2") return head, done end nodes.tasks.appendaction("processors", "after", "Moduledata.vtypeset.rotate_all1") nodes.tasks.appendaction("shipouts", "after", "Moduledata.vtypeset.rotate_all2") -- fails here \stopluacode \starttext try \stoptext ``` Compiled the mini-try.lmtx and got outputs in terminal: ```text D:\ah21\TEX\vertical-typesetting>cd d:\ah21\TEX\vertical-typesetting & chcp 65001 & context d:\ah21\TEX\vertical-typesetting\mini-try.lmtx Active code page: 65001 resolvers | formats | executing runner 'run luametatex format': luametatex --jobname="d:/ah21/TEX/vertical-typesetting/mini-try.lmtx" --socket --shell-escape --fmt=D:/venvs/context-win64/tex/texmf-cache/luametatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/luametatex/cont-en.fmt --lua=D:/venvs/context-win64/tex/texmf-cache/luametatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/luametatex/cont-en.lui --c:currentrun=1 --c:fulljobname="d:/ah21/TEX/vertical-typesetting/mini-try.lmtx" --c:input="d:/ah21/TEX/vertical-typesetting/mini-try.lmtx" --c:kindofrun=1 --c:maxnofruns=9 --c:texmfbinpath="D:/venvs/context-win64/tex/texmf-win64/bin" system > system > ConTeXt ver: 2024.08.16 16:30 LMTX fmt: 2024.9.15 int: english/english system > system > 'cont-new.mkxl' loaded open source > level 1, order 1, name 'D:/venvs/context-win64/tex/texmf-context/tex/context/base/mkxl/cont-new.mkxl' system > beware: some patches loaded from cont-new.mkiv close source > level 1, order 1, name 'D:/venvs/context-win64/tex/texmf-context/tex/context/base/mkxl/cont-new.mkxl' system > files > jobname 'd:/ah21/TEX/vertical-typesetting/mini-try', input 'd:/ah21/TEX/vertical-typesetting/mini-try.lmtx', result 'd:/ah21/TEX/vertical-typesetting/mini-try' fonts > latin modern fonts are not preloaded languages > language 'en' is active open source > level 1, order 2, name 'd:/ah21/TEX/vertical-typesetting/mini-try.lmtx' fonts > preloading latin modern fonts (second stage) fonts > 'fallback modern rm 12pt' is loaded >>>>>> HERE IS ROTATE_ALL1 >>>>>> HERE IS ROTATE_ALL1 lua error > lua error on line 1 in file d:/ah21/TEX/vertical-typesetting/mini-try.lmtx: registered function call [254]: ...n64/tex/texmf-context/tex/context/base/mkiv/util-seq.lua:328: attempt to call a nil value stack traceback: ...n64/tex/texmf-context/tex/context/base/mkiv/util-seq.lua:328: in upvalue 'compile' ...n64/tex/texmf-context/tex/context/base/mkxl/node-tsk.lmt:231: in upvalue 'create' ...n64/tex/texmf-context/tex/context/base/mkxl/node-tsk.lmt:247: in upvalue 'actions' ...n64/tex/texmf-context/tex/context/base/mkxl/node-shp.lmt:38: in function <...n64/tex/texmf-context/tex/context/base/mkxl/node-shp.lmt:37> (...tail calls...) 1 >> \startluacode 2 Moduledata = Moduledata or {} 3 Moduledata.vtypeset = Moduledata.vtypeset or {} 4 5 function Moduledata.vtypeset.rotate_all1(head) 6 print(">>>>>> HERE IS ROTATE_ALL1") 7 return head, done 8 end 9 10 function Moduledata.vtypeset.rotate_all2(head) 11 print(">>>>>> HERE IS ROTATE_ALL2") mtx-context | fatal error: return code: 1 D:\ah21\TEX\vertical-typesetting> ``` and got a mini-try-error.log: ```text return { ["filename"]="d:/ah21/TEX/vertical-typesetting/mini-try.lmtx", ["lastcontext"]="", ["lastluaerror"]="registered function call [254]: ...n64/tex/texmf-context/tex/context/base/mkiv/util-seq.lua:328: attempt to call a nil value\nstack traceback:\n ...n64/tex/texmf-context/tex/context/base/mkiv/util-seq.lua:328: in upvalue 'compile'\n ...n64/tex/texmf-context/tex/context/base/mkxl/node-tsk.lmt:231: in upvalue 'create'\n ...n64/tex/texmf-context/tex/context/base/mkxl/node-tsk.lmt:247: in upvalue 'actions'\n ...n64/tex/texmf-context/tex/context/base/mkxl/node-shp.lmt:38: in function <...n64/tex/texmf-context/tex/context/base/mkxl/node-shp.lmt:37>\n (...tail calls...)", ["lasttexerror"]="", ["linenumber"]=1, ["luaerrorline"]="328", ["offset"]=10, ["skiplinenumber"]=1, } ``` and got a mini-try.log: ```text system > system > ConTeXt ver: 2024.08.16 16:30 LMTX fmt: 2024.9.15 int: english/english system > system > 'cont-new.mkxl' loaded open source > level 1, order 1, name 'D:/venvs/context-win64/tex/texmf-context/tex/context/base/mkxl/cont-new.mkxl' system > beware: some patches loaded from cont-new.mkiv close source > level 1, order 1, name 'D:/venvs/context-win64/tex/texmf-context/tex/context/base/mkxl/cont-new.mkxl' system > files > jobname 'd:/ah21/TEX/vertical-typesetting/mini-try', input 'd:/ah21/TEX/vertical-typesetting/mini-try.lmtx', result 'd:/ah21/TEX/vertical-typesetting/mini-try' fonts > latin modern fonts are not preloaded languages > language 'en' is active open source > level 1, order 2, name 'd:/ah21/TEX/vertical-typesetting/mini-try.lmtx' fonts > preloading latin modern fonts (second stage) fonts > 'fallback modern rm 12pt' is loaded lua error > lua error on line 1 in file d:/ah21/TEX/vertical-typesetting/mini-try.lmtx: registered function call [254]: ...n64/tex/texmf-context/tex/context/base/mkiv/util-seq.lua:328: attempt to call a nil value stack traceback: ...n64/tex/texmf-context/tex/context/base/mkiv/util-seq.lua:328: in upvalue 'compile' ...n64/tex/texmf-context/tex/context/base/mkxl/node-tsk.lmt:231: in upvalue 'create' ...n64/tex/texmf-context/tex/context/base/mkxl/node-tsk.lmt:247: in upvalue 'actions' ...n64/tex/texmf-context/tex/context/base/mkxl/node-shp.lmt:38: in function <...n64/tex/texmf-context/tex/context/base/mkxl/node-shp.lmt:37> (...tail calls...) 1 >> \startluacode 2 Moduledata = Moduledata or {} 3 Moduledata.vtypeset = Moduledata.vtypeset or {} 4 5 function Moduledata.vtypeset.rotate_all1(head) 6 print(">>>>>> HERE IS ROTATE_ALL1") 7 return head, done 8 end 9 10 function Moduledata.vtypeset.rotate_all2(head) 11 print(">>>>>> HERE IS ROTATE_ALL2") ``` My question is: Can I still appendaction in "shipouts" "after"? If so, how to do it? Best regards, 黄复雄(Huang Fusyong)

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Envelopes and shaded paths
by Keith McKay 22 Sep '24

22 Sep '24

Hi, I have been playing about with envelopes to produce shaded paths as described in the new LuaMetFun manual, see page 105 therein. Using the code below I wanted to produce a shaded path, in this case a curve and then rotating it in 5 degree steps from 0 to 355 degrees to produce a kind of spiral. Here is the code: \startMPpage pair A,B; path p, psubPath, asPathEnvelope; A = (0cm,0cm);B = (5cm,0cm); p = A{dir 60}.. B; fill fullsquare scaled 12cm withcolor 0.5[blue,white]; for i = 0 step 5 until 355: psubPath := (subpath((0.1 * length p), (1 * length p))of p)rotated i; asPathEnvelope := envelope pensquare scaled 0.5mm of psubPath; fill asPathEnvelope rotated i yscaled 1 withshademethod "linear" withshadecolors (0.5[blue,white],white); endfor; \stopMPpage I had expected to get a series of curves where the outer point of the curve was white, shading down to 0.5[blue,white]at the inner point of the curve. I was expecting the shading to remain that way, however, as the curve is rotated round, the shading effect slowly changes until it is reversed, and as it continues to be rotated it returns to it original shading. Although I quite like that effect, it's a nice feature, I would like to be able to produce the shading the way I wanted. A while back Hans explained to me why this happened and how I could remedy it, but unfortunately my aged memory has failed me and I cant remember how to do it. So I thought the youthful brains of the ConTeXt group may be able to help out, and it might be of interest in any case. I attach a pdf of the spiral effect. Best Wishes Keith McKay

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Same font for metafun as document
by Shiv Shankar Dayal 22 Sep '24

22 Sep '24

Suppose I use dejavu fonts for the main document then how can I have metafun use the same fonts for labelling. All the metafun code is inline. -- Respect, Shiv Shankar Dayal

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issue with "context --pages=reference"
by Pablo Rodriguez 22 Sep '24

22 Sep '24

Dear list, I have the following sample (sample.tex): \setuppagenumbering[alternative=doublesided] \setuphead[chapter][reference=ch\namedheadnumber{chapter}] \starttext \dorecurse{5}{% \startchapter[title={Chapter \namedheadnumber{chapter}}] \dorecurse{\randomnumber{10}{50}} {\input zapf\par} \stopchapter} \stoptext I get no page numbers from: context --pages=ch3 sample.tex BTW, sample.tuc contains: { ["metadata"]=6, ["numberdata"]=10, ["references"]={ ["block"]="bodypart", ["internal"]=4, ["realpage"]=29, ["reference"]="ch3", ["section"]=4, }, Which is the right way to invoke "context --pages=[reference]" or what am I missing here? Many thanks for your help, Pablo

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your favourite ConTeXt debugging tools
by Henning Hraban Ramm 22 Sep '24

22 Sep '24

There’s a growing number of trackers and directives, as well as \show… commands. I’m sure there are some that I could/should use and just don’t know, and there’s just too much to try. Which are your hidden gems or favourite tools? I’ll start: \showlayout: inserts 4 pages of layout dimensions \showmakeup: values of many details, e.g. distances and kerning \showgrid: line grid for grid mode \showframe: all frames \showboxes: draw frames around a few areas \showsetups: list of variables \showbodyfont: variants of tha active font family \showbodyfontenvironment: values of relative sizes \showsymbolset[name]: list of symbols \showstruts \showcolor, \showcolorcomponents \showpalet, \comparepalet \showexternalfigures \showtrackers – or "context --trackers" \showdirectives – or "context --directives" Trackers: builders.hpack.overflow – mark under-/overfull hboxes hyphenation.applied.visualize – show hyphenation https://wiki.contextgarden.net/Trackers/typesetters.suspects https://wiki.contextgarden.net/Trackers/visualizers.justification Directives: pdfview.method=auto (in contextcnf.lua) to change --autopdf default logs.errors=* – make warnings errors(?) logs.quitonerror=* – stop at every error references.bookmarks.preroll – expand(?) macros in bookmarks backend.pdf.nounicode=X – obfuscate text Let’s fill in and complete https://wiki.contextgarden.net/Trackers (the list was made in 2012 and is quite outdated) Hraban

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Problem with context --extra=select
by Michael Guravage 21 Sep '24

21 Sep '24

Greetings, Regardless of the selection criteria, the select tool selects only the first page. This feature works in my ConTeXt versions from 2024.05.17 and 2024.08.13. I'm running the latest version, i.e. 2024.09.17. context --extra=select --selection=11:16 forexample.pdf I've attached the output in a log file if anyone's interested. Any suggestions? -- With kind regards, Michael Guravage <http://literatesolutions.com>

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