February 2021 - ntg-context - NTG Mailing Lists

set fallback in \definefont
by Mohammad Hossein Bateni 16 Feb '21

16 Feb '21

Hi, Is there a way to set the fallback for fonts when we define them not as a typescript but using \definefont? \definefont[MyFont][Font.otf*MyFeatures] Is there a default fallback one can specify? Is simplefonts module deprecated or discouraged now? When we define a font via typescript commands, we can specify rm, ss, tt, mm, hw and cg shapes for it. Can we add arbitrary styles? For example, I would use this for quotations, headings, etc. Currently, I either have to spare ss or use \definefont for such scenarios. Thanks, --MHB

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temporary changes to the layout - \startlocal undefined
by Werner Hennrich 16 Feb '21

16 Feb '21

Hello Everybody, I need to increase my header's space temporarily and according to pg 99 of context_an_excursion "\startlocal ... \stoplocal" is the way to go - unfortunately my LMTX (2021.02.02 15:49) disagrees: \setuppapersize[A4][A4] \setuplayout[ ... header=15mm, ... ] \starttext \input tufte \page \startlocal \setuplayout[header+=20mm] \input tufte \stoplocal \page \input tufte \stoptext This fails: tex error > tex error on line XX in file ./local-layout.tex: Undefined control sequence XX >> \startlocal Do I need to load something in order to use this? Or has it been completely removed? And if so, is there a new alternative method to do the same thing? I was unable to find anything on this topic except https://www.mail-archive.com/ntg-context@ntg.nl/msg63602.html which raises the same question already in 2012 but never answers it IMHO. Thank you very much, Werner

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\showmathcharacters, mk ii, how can I get the list, is not working!!
by Ursula Hermann 16 Feb '21

16 Feb '21

Dear List, I would like to know, what i can do, to geht all Math macros with MkII : \showmathcharacters in my Editor: WinEdt. I tried to compile it, but there is a mistake. I tried with \starttext and \stoptext, didn't work. Command Line: context.exe --synctex=-1 "Math 2.tex" Startup Folder: C:\Users\Administrator resolvers | formats | executing runner 'run luatex format': C:/texlive/2020/bin/win32/luatex --jobname="Math 2" --fmt=C:/texlive/2020/texmf-var/luatex-cache/context/a86c089b384a3076dc514ba966a1fac9/formats/luatex/cont-en.fmt --lua=C:/texlive/2020/texmf-var/luatex-cache/context/a86c089b384a3076dc514ba966a1fac9/formats/luatex/cont-en.lui cont-yes.mkiv --c:currentrun=1 --c:fulljobname="./Math 2.tex" --c:input="./Math 2.tex" --c:kindofrun=1 --c:maxnofruns=9 --c:synctex="-1" --c:texmfbinpath="C:/texlive/2020/bin/win32" This is LuaTeX, Version 1.12.0 (TeX Live 2020/W32TeX) system commands enabled. open source > level 1, order 1, name 'C:/texlive/2020/texmf-dist/tex/context/base/mkiv/cont-yes.mkiv' system > system > ConTeXt ver: 2020.03.10 14:44 MKIV beta fmt: 2021.1.18 int: english/english system > system > 'cont-new.mkiv' loaded open source > level 2, order 2, name 'C:/texlive/2020/texmf-dist/tex/context/base/mkiv/cont-new.mkiv' system > beware: some patches loaded from cont-new.mkiv close source > level 2, order 2, name 'C:/texlive/2020/texmf-dist/tex/context/base/mkiv/cont-new.mkiv' system > files > jobname 'Math 2', input './Math 2', result 'Math 2' fonts > latin modern fonts are not preloaded languages > language 'en' is active system > synctex functionality is enabled, expect 5-10 pct runtime overhead! open source > level 2, order 3, name 'C:/Users/Administrator/Math 2.tex' tex error > tex error on line 1 in file C:/Users/Administrator/Math 2.tex: ! Undefined control sequence l.1 \showmathcharacters 1 >> \showmathcharacters mtx-context | fatal error: return code: 1 _____________________________________________________________________ ConTeXt Compilation Report (Pages: 0) Errors: 1 Warnings: 0 Bad Boxes: 0 ___________________________________________________________ Many thanks Uschi Hermann

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verify if you are already postponing notes
by mf 15 Feb '21

15 Feb '21

Dear list, I'm typesetting XHTML and there is a couple of cases (tables and math), where I use \postponenotes ... \flushnotes in both their XML setups. The problem arises when I have math inside the cell of a table, so I get those commands nested: \postponenotes % <table> element \postponenotes % <span class="math"> element inside a cell \flushnotes % </span> closing math \flushnotes % </table> closing table With CSS selectors or XML machinery I can find those corner cases, but something like this would be better because more general: \doifnotpostponingnotes{\postponenotes} \dofipostponingnotes{\flushnotes} Is there a way to define those \doif... macros? Massi

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LMTX problem with XML
by Pablo Rodriguez 15 Feb '21

15 Feb '21

Hans, the following sample breaks compilation with latest after release from 2021.02.05 17:45: \startbuffer[demo] <html xmlns="http://www.w3.org/1999/xhtml"> <body> <div id="in" class="section level1 frontmatter"> <h1>In</h1> </div> <div id="body" class="section level1 bodymatter"> <h1>Body</h1> </div> </body> </html> \stopbuffer \startxmlsetups xml:initialize \xmlsetsetup{#1} {html|body|div|h1} {xml:*} \xmlsetsetup{#1} {[contains(@class,'frontmatter')]} {xml:frontmatter} \xmlsetsetup{#1} {[contains(@class,'bodymatter')]} {xml:bodymatter} \stopxmlsetups \xmlregistersetup{xml:initialize} \startxmlsetups xml:html \xmlflush{#1} \stopxmlsetups \startxmlsetups xml:body \xmlflush{#1} \stopxmlsetups \startxmlsetups xml:frontmatter \startfrontmatter \xmlflush{#1} \stopfrontmatter \stopxmlsetups \startxmlsetups xml:bodymatter \startbodymatter \xmlflush{#1} \stopbodymatter \stopxmlsetups \startxmlsetups xml:h1 \xmlflush{#1} \stopxmlsetups \starttext \xmlprocessbuffer{main}{demo}{} \stoptext Current latest from 2021.02.13 00:28 complains about argument of \xmlw having an extra }. I think this may be a bug in ConTeXt. Many thanks for your help, Pablo -- http://www.ousia.tk

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tikzpicture in margin
by Jigé 15 Feb '21

15 Feb '21

Hi all. I'm trying to place a TikZ picture in the margin. Here is a small example: \usemodule[tikz] \setuplayout[backspace=4cm, topspace=2cm, height=middle] \starttext \input{lorem} \margintext{I have discovered a truly marvelous proof ... but this margin is too narrow to contain it.} \input{lorem} \inmargin{\externalfigure[cow] [width=\marginwidth]} % The above works. % The following does not: \input{lorem} \inmargin{ \starttikzpicture \draw[gray] (-2,0) grid (2,2) ; \draw plot [domain=-2:2, samples=50, smooth] (\x,{\x * \x}); \stoptikzpicture } \stoptext -> Undefined control sequence I tried using \startfigure, \hbox... no success. Actually the command \startmarginblock ... \stop... described in the ConText reference works with a TikZ picture. But the picture, in the margin, gets near the top of the page. I don't understand the meaning of the options (especially the difference between `location' and `align'). And is it `\setuppagenumbering[alternative=doublesided]'-aware ? Example: \usemodule[tikz] \setuplayout[backspace=4cm, topspace=2cm, height=middle] \setuppagenumbering[alternative=doublesided] \starttext \input{lorem} \inmargin{\externalfigure[cow] [width=\marginwidth]} \pagebreak \input{lorem} \input{lorem} \blank We would like the picture to go the the left of this paragraph. \setupmarginblocks[location=left,align=inner] \startmarginblock \starttikzpicture[scale=0.2] \draw[gray] (-2,0) grid (2,2) ; \draw plot [domain=-2:2, samples=50, smooth] (\x,{\x * \x}); \stoptikzpicture \stopmarginblock \stoptext Best regards

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Question about parsing XML and attributes (normally var.at.attrib) with a name with ':' in it
by Gerben Wierda 14 Feb '21

14 Feb '21

If I have an XML element like this: <A x=“one” attribute:B=“two"/> and it has been read in a lua variable foo, I can get at attribute x with foo.at.x But how do I get at attribute:B? Gerben Wierda (LinkedIn <https://www.linkedin.com/in/gerbenwierda>) R&A Enterprise Architecture <https://ea.rna.nl/> (main site) Book: Chess and the Art of Enterprise Architecture <https://ea.rna.nl/the-book/> Book: Mastering ArchiMate <https://ea.rna.nl/the-book-edition-iii/>

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scope
by Hans Hagen 14 Feb '21

14 Feb '21

Hi, When you allocate a new register (with e.g. \newdimen) that is always a global definition (kind of a tex tradition). As a (likely to stay) experiment I added \newlocaldimen \foo \setnewlocaldimen \foo 123pt and comparable helpers. Some more can be found in lowlevel-scope.pdf in the distribution. The idea is that users who write their own macros that need 'variables' can define them locally without the danger for clashing with system ones (or each others macros). Actually, global assignments only affects that variable, so one can do \bgroup \newlocaldimen\foo \bgroup \global\foo=456pt \egroup ... use \foo \egroup Best use names like \mydimena etc in order nnot to clash with system ones (that can be protected against overload). In spite of redefinitions each time a macro using it gets expanded, performance is quite okay. It falls in the category "interesting hacks but maybe not needed because never asked for", but on the other hand, sometimes availability creates retrospective demand. (I also did \newlocalread and added some extra random access hackery to \read, so who knows what users will abuse that feature for.) 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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parsing multi-valued parameters
by Werner Hennrich 13 Feb '21

13 Feb '21

Hello everyone, please can you give me pointers on how to easiest parse multi-valued \dummyparameter{...} like in \something[...,weather={sunshine, rain, hail},...] so that I can test for e.g. rain, sunshine, wind, hail, mist, fog, storm etc, each if it is present or not? ...so I can keep my number of parameters down and my parameter list as simple as possible. I have no idea what to search for in the docs or (better) in the test cases / samples. Would be great if you could just let me know where to look or what to sarch for Thank you very much! Werner

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Loop?
by Angel M Alganza 13 Feb '21

13 Feb '21

Hello: I am trying to print a list of names always followed by the same info (generated by a new command). At the moment, I have all the names followed by the command like so: Person Number One \mycommand Person Number Two \mycommand Person Number Three \mycommand Person Number Four \mycommand Person Number Five \mycommand . . . I'd rather have the list of people stored somewhere (a list? an array?) and loop through it and then inserting \mynewcommand at compilation time. That way, when I need to replace the list of people with a new one, I'd just do that instead of building the above structure again and again. Is it possible to do that with just ConTeXt or would I need to resort to Lua. I guess it should be possible both ways, but I haven't figure out how to do it. Any pointer, please? Thank you so much in advance. Cheers, Ángel

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