March 2025 - ntg-context - NTG Mailing Lists

non standard tag for structure
by Pablo Rodriguez 10 Apr '25

10 Apr '25

Hans, with the following source, veraPDF-1.29.11 complains about a non-standard tag named /documentpart: \setuptagging[state=start] \setupbackend [format=PDF/A-3a, intent=sRGB IEC61966-2.1, level=0] \starttext whatever \pdfbackendactualtext{abc}{hoh} \stoptext The problematic object reads: 4 0 obj << /K 28 0 R /ParentTree 5 0 R /RoleMap << /break /NonStruct /document /Document /documentpart /DocumentFragment /navigationpage /NonStruct >> /Type /StructTreeRoot >> endobj If I replace (according to https://opensource.adobe.com/dc-acrobat-sdk-docs/pdfstandards/PDF32000_2008…) /documentpart with /Part, validation in veraPDF is perfectly fine. BTW, /DocumentFragment seems not to be included in PDF-1.7 (https://opensource.adobe.com/dc-acrobat-sdk-docs/pdfstandards/PDF32000_2008…) According to https://github.com/veraPDF/veraPDF-model/blob/4c8e855b68546547971121281ff2a…, /DocumentFragment seems to be only available in PDF-2.0. Providing a patch for strc-tag.lmt would be easy, but this would affect to ua-2 (which may use /DocumentFragment). Many thanks for your help, Pablo

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nested context/lua calls
by Mohammad Hossein Bateni 03 Apr '25

03 Apr '25

Hello, I have some code like this: --------------------------------- \def\MakeSomething{... some code that returns number 12} \startluacode function WorkWithSomething(data) -- call MakeSomething to obtain 12 -- base on the value above make some decisions end WorkWithSomething(some_data) \stopluacode --------------------------------- If I use context.MakeSomething() inside the lua block, this is buffered till the end of the block, so I can't get the result and work with it. If MakeSomething is a command already "edef-ed", I can use tokens.getters.macro.MakeSomething to find the value. If MakeSomething has an argument which is determined within the lua block, then I can't use this hack. The ugly partial solution I have found is to change the signature of WorkWithSomething to receive an argument and then I replicate the parameters of MakeSomething on the TeX side: --------------------------------- \def\MakeSomething#1{...} \startluacode function WorkWithSomething(data,MakeSomethingOutput) -- we wanted to use some computation on data to obtain input to MakeSomething -- then call MakeSomething to obtain its result end \stopluacode \ctxlua{WorkWithSomething(some_data, "\MakeSomething{replicate processing on data to obtain input to this macro}")} --------------------------------- Is there a more elegant solution? Ideally I want a way to start a TeX process under Lua, and process the macros there before I get to the next line of Lua code. In my motivation, MakeSomething is \datasetvariable. I wanted to look up something in the dataset and use it for the rest of computation/typesetting. Thanks a lot, --Mohammad

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FLOW chart module
by Willi Egger 31 Mar '25

31 Mar '25

Good evening! I just tried to setup a small FLOW chart. However it appears that there must be something broken: tex error > tex error on line 22 in file /Users/willi/Documents/test-FLOW-chart.tex: Control sequence expected instead of undefined <line 3.22> \location {3,3} 12 \startFLOWcell 13 \name{TestA} 14 \location{3,2} 15 \shape{action} 16 \text{TestA} 17 \connection[bt]{End} 18 \stopFLOWchart 19 20 \startFLOWcell 21 \name{End} 22 >> \location{3,3} 23 \shape{procedure} 24 \text{End} 25 \stopFLOWcell 26 \stopFLOWchart 27 28 \starttext 29 30 \FLOWchart{TEST} 31 32 \stoptext Minimal Example: \usemodule[chart] \startFLOWchart[TEST] \startFLOWcell \name{Begin} \location{3,1} \shape{procedure} \text{Begin} \connection[bt]{TestA} \stopFLOWcell \startFLOWcell \name{TestA} \location{3,2} \shape{action} \text{TestA} \connection[bt]{End} \stopFLOWchart \startFLOWcell \name{End} \location{3,3} \shape{procedure} \text{End} \stopFLOWcell \stopFLOWchart \starttext \FLOWchart{TEST} \stoptext Kind regards Willi

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issue with compressmethod in linenotes (again)
by Pablo Rodriguez 31 Mar '25

31 Mar '25

Dear list, I have the following sample: \setuppapersize[A7] \definelinenote[othernote] [paragraph=yes, compress=yes, compressmethod=separator] \setuplinenote[paragraph=yes, compress=yes, compressmethod=stopper] \setupnotation[linenote, othernote] [alternative=serried] \starttext \startlinenumbering \dorecurse{25} {a\linenote{b}\othernote{c} } \stoplinenumbering \stoptext I’m afraid I get both methods between notes from the same line and after the the last note from the line (and the number and note from the next line). Sorry for insisting, but if this isn’t a bug, I really don’t know what I’m missing. Many thanks for your help, Pablo

1 0

expansion and doifelse
by Mohammad Hossein Bateni 30 Mar '25

30 Mar '25

Hello, Here's a MNWE: ------------------------------- \starttext \def\A{a} %\def\A{b} \ctxlua{LuaA("\doifelse{\A}{a}{ey}{bee}")} \stoptext ------------------------------- I put \expanded and \expandafter here and there, but couldn't get this to work. Is the problem due to \doifelse scanning its input? If yes, how can we handle this? Thanks, Mohammad

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wrong compressmethod=separator as stopper too?
by Pablo Rodriguez 28 Mar '25

28 Mar '25

Dear list, I have the following sample: \setuppapersize[A7] \setuplinenote[paragraph=yes, compressmethod=separator, compress=yes, compressseparator={\|\|}] \starttext \dorecurse{25} {a\linenote{b} } \stoptext The || separator is also used as a stopper. As far as I understood (and ConTeXt behaved like that last time I used this feature) the separator command replaces the repeated line number. It should not be used as an stopper (or to mark the separation with next line). Could anyone be so kind to confirm that this is unintended and that I’m not missing anything? Many thanks for your help, Pablo

1 0

Inconsistency in \sc
by Alan Caruanambo 27 Mar '25

27 Mar '25

\sc gets different results when changing the default font. See attached PDF. \starttext \startbuffer {\sc Use CaPs and SmAll caps (preserve casing)} \stopbuffer \getbuffer \setupbodyfont[dejavu] \getbuffer \crlf \setupbodyfont[ibmplex,rm] \getbuffer \stoptext

3 2

mathmatrix: Aligning row baseline to text baseline
by Kirill Davidov 27 Mar '25

27 Mar '25

Greetings, This is little more than a pet peeve of mine, but the `location=normal` option for `mathmatrix` has the matrix's center row baseline misaligned with the baseline of the math around. The severity of the misalignment seems to correlate with interline space settings — more space, worse the misalignment. Is it possible to align the baselines? I've been spoiled by LaTeX's `tabularray` package — it has an undocumented value for its `baseline` key. Setting it to `M` does exactly what I want. This MWE demonstrates the misalignment with a double line spacing: % start MWE \setupinterlinespace[line=5.6ex] \startdocument \startformula \showboxes = \matrix{=} \stopformula \stopdocument % stop MWE Kirill

1 0

footnotes with separate lines
by jbf 27 Mar '25

27 Mar '25

I am wondering if there is a solution to the problem I have just encountered. I have a footnote that requires separate lines. I have achieved that in a straightforward case as follows: \footnote{1770 – the discovery\\ 1778 – the invasion\\ 1824 – the war of extermination\\ 1901 – the Constitution} That works, but if I add \setupinteraction[state=start] to the file it does not. That particular footnote causes the compilation to go into an endless loop. All other footnotes are ok. I tried replacing the \\ with \crlf but that has the same result. I tried \start...\stoplines in the hope that this might work inside a footnote, but it doesn't. Of course, I do not understand what is happening between 'interaction' and what I am doing with this particular footnote, but clearly it is problematic. Any way I can get my separate lines and still have interaction working in that file? Julian

2 2

automatic character comparison
by Pablo Rodriguez 27 Mar '25

27 Mar '25

Dear list, I have the following sample: \setuppapersize[A7] \starttext \definecolumnset [paral] [n=2] \definesubcolumnset[paral][1][1] \definesubcolumnset[paral][2][2] \startcolumnset[paral] \startsubcolumnset[1] abce \stopsubcolumnset \startsubcolumnset[2] abcd \stopsubcolumnset \flushsubcolumnsets[spread] \startsubcolumnset[1] abc% \inframed [background=color, backgroundcolor=lightgreen, frame=off] {e} \stopsubcolumnset \startsubcolumnset[2] abc% \inframed [background=color, backgroundcolor=lightred, frame=off] {d} \stopsubcolumnset \flushsubcolumnsets[spread] \stopcolumnset \stoptext What I want to achieve is automatic text comparison between versions of the same text (in different subcolumnsets). The first line shows different versions text. I wonder whether there would be an automatic way to get the \inframed highlighting with any character that differs from the other column (it might be different, or just missing or being added). I think this may be possible with ConTeXt, but I don’t know how to achieve it automagically. Any ideas on how to get this automatic text comparison? Many thanks in advance, Pablo

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