March 2021 - ntg-context - NTG Mailing Lists

conditional formatting, checking the context (SOLVED)
by Henning Hraban Ramm 06 Mar '21

06 Mar '21

Hi, in the example below I’m using a custom highlighting macro in titles. Now I don’t want this highlighting in the ToC or in bookmarks (in my real world example the changes affect bookmarks, not in the MWE). I know I can use the list= and bookmark= keys of \startchapter, but since the text is always the same for all, I’d like to check within the \SPECIAL macro if we’re within the chapter title or within a list or bookmarks. In preparing the MWE and this message I found a solution with the *chapter system mode. Wanted to share anyway ;) Hraban \define[1]\SPECIAL{\doifmodeelse{*chapter}{{\bf #1}}{#1}} \setupinteraction[state=start] \placebookmarks[chapter,title] \starttext \startchapter[title={This \SPECIAL{and} That}] \input knuth \stopchapter \startchapter[title={Something \SPECIAL{Other}}] \input tufte \stopchapter \completecontent[criterium=all] \stoptext

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Center a text (Metafun)
by Fabrice Couvreur 06 Mar '21

06 Mar '21

Hi Hans, Some time ago, you offered this code to respond to a specific request from me. I used this code again and wanted to know if it was possible for the title "Algorithm" to be automatically centered based on the content. Thank you Fabrice \definecolor[MyBlue][c=0.2 , m=0.03, y=0.00, k=0.00] \definecolor[maincolor] [b=.5] \defineframedtext [MyFrame] [frame=off, background=MyFrame, width=fit, height=fit, style=small] \startuseMPgraphic{MyFrame} path b; picture p; p := textext.rt("\tfx\bf\white\framedtextparameter{Title}"); p := p shifted (2BodyFontSize,OverlayHeight-ypart center p+.25ExHeight); b := boundingbox p leftenlarged .5EmWidth rightenlarged .5EmWidth topenlarged .5EmWidth bottomenlarged .5EmWidth ; fill OverlayBox withcolor "MyBlue" ; fill b withcolor \MPcolor{maincolor} ; draw p ; setbounds currentpicture to boundingbox currentpicture enlarged 2mm ; \stopuseMPgraphic \defineoverlay [MyFrame] [\useMPgraphic{MyFrame}] \starttext \MyFrame[Title=Algorithme]{% \m{a\gets 2x-1} \m{b\gets a²-1} \m{c\gets b\div 4} \m{d\gets c-a+x} } \stoptext

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externalizing TikZ graphics
by Henning Hraban Ramm 06 Mar '21

06 Mar '21

Hi, did anyone succeed in externalizing TikZ graphics with ConTeXt? It’s about a project with hundreds of diagrams that (in the current state) clutter the main directory with cryptically-named PDFs (at least sorted by component name) and that on each ConTeXt run take a lot of runtime (I guess also the many log lines slow the process). In 2013, Aditya said it wasn’t possible to externalize pgf/TikZ graphics as documented in the pgf manual, and "perhaps" it would make sense to use his filter module: https://mailman.ntg.nl/pipermail/ntg-context/2013/071162.html Did anyone try to do that? I didn’t find anything in this list’s archives. The original pgf way is two-pass, and you’d need to call LaTeX with the intended graphics name as --jobname; that’s far too much of a hassle for that many graphics. I generally like how the filter module works, as you can also define the name of every buffer, but my only experience with that is my LilyPond setup. If nobody has better advice, I’ll try to come up with a filter setup. That would mean we’d avoid the tikz module, every TikZ diagram will get written to a buffer of configurable name, and that (with preamble setup) will get run through LaTeX. I read pgf had some restrictions in plain TeX mode, but perhaps we can also use LuaTeX in plain mode to avoid the LaTeX dependency. Best, Hraban

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placefigure RTL
by Mohammad Hossein Bateni 06 Mar '21

06 Mar '21

Hello, Is there a way to make \placefigure[left,right] work in RTL documents? Here's a MWE: \starttext \setupalign[r2l] \placefigure[none,right]{}{\externalfigure[cow]} \input knuth \placefigure[none,left]{}{\externalfigure[cow]} \input knuth \page \setupalign[l2r] \placefigure[none,right]{}{\externalfigure[cow]} \input knuth \placefigure[none,left]{}{\externalfigure[cow]} \input knuth \stoptext Thanks a lot, --MHB

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tex live code freeze
by Hans Hagen 05 Mar '21

05 Mar '21

Hi, The 2021 texlive code is currently being frozen. This means that Mojca will check-in the current context release right before tl gets deep frozen. The MKII code (mkii and mpii files) hasn't changed so it should still work well with pdftex and xetex although I admit that I haven't checked to what extend updates to those engines have side effects for context, but I assume none. Let me know if there are problems. The MKIV code (mkiv, mkvi, mpiv, lua files) has changed but not much, mostly as a side effect of the code split and move to LMTX where the focus is on now. There have been recent changes in the metafun code, but new functionality is LMTX only, simply because we use an extended library (more features). Of course there have been some bug fixes to MKIV and if you think more (bugs) should be fixed let us know. The yearly texlive release is also the 'official' yearly current release but of course after that there will be updates when needed. In these updates we don't distinguish between betas and currents: we dropped that some time ago because it was only confusing. Last/this year much of LMTX (mkxl, mpxl, lmt files) already got split and I expect that this year all the lua and mp files also will be independent so that at some point we have a more or less frozen MKIV that uses luatex (which doesn't change fundamentally apart from fixes so we don't need to adapt code to it i.e. MKIV should keep working just like MKII does with pdftex; updates to for instance fonts and languages will be applied). I get the impression that most users already moved to LMTX which helped getting it in the state it is now (thanks for all the testing). Although MKII/MKIV serves a reference for functionality, new stuff got and gets added to LMTX. I could backport some but it probably makes no sense (some is probably easy). There is of course untested code like the overload protection mechasnisms but I have that enabled on my machine (users can do that too) so I can notice side effects. The new engine (luametatex) doesn't change much. Recent changes are mostly cosmetic and I don't expect many more fundamental additions, but who knows ... (not all in there is yet used extensively) and maybe context users have interesting demands that trigger extra stuff (read: challenges me). So apart from new trickery at the tex macro end, we also reach a more stable state in LMTX. Soon I'll pick up some todo's. Some users want parallel stuff (keeps coming up), I also want to see how we can do more metafun - let me know what is missing as I'm currently in metafun mode - and go over some older lua code that started as experiment but hasn't been checked recently. I also want to cleanup the export code a bit but it's kind of boring to do and maybe we should ditch some pdf backend functionilty that adobe dropped from its viewers. And there are always manuals to complete / update ... Anyway, the current LMTX release is also a kind of yearly snapshot. So, if there is some last minute stuff that needs to be done to context MKII and MKIV before the tl code freeze, let us know. 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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error with recent standalone (luametatex)
by Alan Bowen 05 Mar '21

05 Mar '21

Files that ran well with ver ConTeXt ver: 2021.02.20 16:50 LMTX and earlier now fail with the following message: tex error > tex error on line 74 in file c_Review-0201-01_Bojowald.tex: lua error: run callback [36]: [string "/Applications/LuaMetaTeX/tex/texmf-context/te..."]:1343: attempt to concatenate a boolean value (local 'v') stack traceback: [string "/Applications/LuaMetaTeX/tex/texmf-context/te..."]:1343: in local 'w' [string "/Applications/LuaMetaTeX/tex/texmf-context/te..."]:1358: in function <[string "/Applications/LuaMetaTeX/tex/texmf-context/te..."]:1353> 64 \startparagraph 65 Some facts are compiled in the synthesis. The representations and inscriptions in the stairwells and kiosk show parallels to other cult buildings [702]. In several cases there are allusions to the ritual Opening of the Mouth [702]. 66 \stopparagraph 67 68 \startparagraph 69 In the synopsis, selected texts are compared [711–725]. The parallels are clearly arranged. 70 \stopparagraph 71 72 \startparagraph 73 The book contains bibliography [737–765], indices [767–809], tables [1a–41b], and color tables [1–7]. 74 >> \stopparagraph Is this a bug or has something changed that I am uns=aware of yet? Alan

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TEXpage does not fit \placetable & \recurselevel always zero
by Jacob Kauffmann 05 Mar '21

05 Mar '21

Dear list, thank you very much for the help so far. I have two problems understanding the output of the code below. I am using version 2021.02.23 17:47. (1) The TEXpage is cut off after ~40 lines. Normally, the page is extended to fit its content. It's probably related to \placetable which I only use here because I need a centered table. I can set the height of the page manually, but the whole purpose of using TEXpage was to avoid that. (2) \recurselevel is always zero in the output. Normally, it counts the iterations. This issue is not relevant for my actual use-case, but I found that when writing the MWE. Best wishes, Jacob Kauffmann \setupTEXpage[width=10cm] \startTEXpage \placetable[force,none]{}{% \starttabulate[|c|c|] \NC A \NC B \NC\NR \HL \dorecurse{50}{\NC \expanded{\recurselevel} \NC \recurselevel \NC\NR} \stoptabulate } \stopTEXpage \stoptext

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reference chapters from another doc in this doc's toc
by denis.maier＠ub.unibe.ch 05 Mar '21

05 Mar '21

Hi, is it possible to include structure elements from other documents in a toc? E.g. when your having a multivolume book where each book is an individual book, but you want to have a TOC that covers all volumes? Best, Denis

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LMTX 2021.03.02 | cross reference to an external file | \pagereference
by Richard Mahoney 05 Mar '21

05 Mar '21

Readers, I'm working on a couple of volumes of papers set up and generated separately (though within the same project). Some of the papers in the second volume make cross references to papers in the first. Now this is working well so long as the reference is to the details associated with, say, a chapter, using \about, \in, and \at. Its doesn't seem to work though with \pagereference: no page number appears in the PDF whatsoever. I have been following the material here: https://wiki.contextgarden.net/References#References_to_an_external_file I'm wondering then ... do cross references to an external file work with \pagereference? Best, Richard -- T +6433121699 M +64210640216 E rmahoney(a)indica-et-buddhica.org IM https://t.me/rmahoney W https://indica-et-buddhica.org/ Indica et Buddhica Littledene Bay Road Oxford NZ

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Re: [NTG-context] Genealogy and context
by David van Diepen 03 Mar '21

03 Mar '21

Hello Hraban and Hans, Thank you Hraban for your enthusiasm. Very nice to hear that this might be useful for other people too, I was kind of hoping that actually. As soon as I have some results I'll share them with you, we might be able to collaborate. Thank you Hans for making this working piece of code, that's great! That will get me started allright. Kind regards, David

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