June 2020 - ntg-context - NTG Mailing Lists

ConTeXt source browser website update
by Taco Hoekwater 05 Jul '20

05 Jul '20

Hi all, I just replaced the software of https://source.contextgarden.net/ by a Lua implementation that uses Hans Hagen’s SciTE lexers for syntax highlighting and a Lua-generated search index. There is no official documentation yet (because I may want to change some stuff still) but here is some relevant information: * The search field uses a Lua string pattern to match a single word (no multi-word search as of yet). See https://www.lua.org/manual/5.3/manual.html#6.4.1 for the syntax of lua string patterns. * The search index only contains 7-bit ASCII ‘words’ that contain at least one of 'a-zA-Z’ (writing an LPEG for unicode matching is a tricky and probably would be quite slow even if I could make it work). Still, this should be ok-ish because most of the ConTeXt source is ASCII, except for the interface files. * The files context-en.xml, mtxrun{.lua}, and all of the files in the tex/context/patterns subtree are skipped in the search index. Also skipped are words shorter than 3 bytes, lua keywords, and words having more than (approx) 1500 hits * On the plus side, because of the SciTE lexer, “contextversion’ and “\contextversion” are separate entries in the search index. And you can search for “\@@kldirection”. * For text file types that have no SciTE lexer there is no syntax highlighting, and binary files are ignored altogether. The rest of the interface should be self-explanatory. Suggestions for improvements are welcome. Index statistics: 4085 files processed, 178 skipped, 3744 with matches 120733 words found 119154 words exported to word.idx 37928 comment words found 36880 words exported to comment.idx 26756 documentation words found 26018 words exported to docs.idx The word.idx is roughly 11 megabytes. Have fun, Taco

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Avoid indentation after \typebuffer
by Mikael Sundqvist 01 Jul '20

01 Jul '20

Hi, I want to avoid indentation after \typebuffer (or set indentnext to auto perhaps). I am probably missing something simple, but I thought that the example file below should have worked: \setupindenting[yes,medium] \setuptyping[buffer][ indentnext=no, ] \starttext \startbuffer \startformula \int_a^b f'(x)\,dx \stopformula \stopbuffer \typebuffer I do not want this line to be indented. \stoptext Compiled with an updated lmxt, and resulting pdf file is attached. /Mikael

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\hideframe to cancel \showframe
by Mikael Sundqvist 01 Jul '20

01 Jul '20

Hi, say that I, for educational purposes, want to use \showframe for a couple of pages, and then want to hide the frames. What is the correct way of doing this? I have for now added a \begingroup and \endgroup, but then another document parameter that is set inside is cancelled after the \endgroup. I tried to look in the source, but could not find anything that worked (what I tried with was to use \setupbackgrounds[state=stop], but that was merely a guess, and it did not work). /Mikael

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Translation of ConTeXt interface
by Garulfo 30 Jun '20

30 Jun '20

Thanks a lot Wolfang for your answer. I have 5 additional questions... sorry. ----------------------------------------------------------- >> \placeFLOAT becomes \placerFLOAT >> \startplaceFLOAT becomes \debutplacerFLOAT >> \placerchemical becomes \placerchemical >> \startplacerchemical becomes \debutplacerchemical >\placefigure is a combination of the element "place" (\e!place) and the > variable "figure" (\v!figure) >\startplacefigure is a combination of the elements "start" (\e!start) >and "place" (\e!place) and the variable "figure" (\v!figure.) So, I'm still doing something wrong, because changing the translation of "figure" in "mult-def.lua" (in the part "variables"), only affect : 1- command "\startfigure \stopfigure" 2- "figure" in "\setuppageinjection" > alternative = figure buffer... ----------------------------------------------------------- I get another difficulty with \startitemize and \stopitemize the translation of the variable "itemize" has no impact on the setup-fr.pdf file produced with : context --interface=fr --global --result=setup-fr x-setups-overview.mkiv But, I just found that if I actually use the translated commands in a test.tex file, it just works. % interface=fr \debuttexte \debutlister \elem first \elem second \finlister \fintexte What should I do in order to have a setup-fr.pdf file that shows the translations actually available ? ----------------------------------------------------------- With the translation of the command textwidth, I can use "largeur=0.5\largeurtexte" (cool !) But this command is not listed in setup-fr.pdf. Is there a way to add these basic commands to setup-fr.pdf ? ----------------------------------------------------------- Math. I get the following error : fonts > preloading latin modern fonts (second stage) fonts > defining > font with asked name 'fichier' is not found using lookup 'file' fonts > defining > unknown font 'fichier', loading aborted I suppose that due to the translation of "file" to "fichier". It's OK when I switch back to - setupstrings cd:file ==> file - variables file ==> file How can I translate the variable "file" into fichier, without messing with fonts (and maybe other file related functions) ----------------------------------------------------------- > Delimited command are problematic (especially when they change > catcodes), e.g. \startluacode use \stopluacode as hard coded delimiter > for the environment. While it is easy to create a synonym for > \startluacode this isn't the case for \stopluacode because the > environment always look for \stopluacode as stopper and alternative > names are ignored. \startsection \stopsection and \startformula \stopformula seem OK. How can I identify the delimited commands that should not be translated in order to avoid this issue. ----------------------------------------------------------- Thanks again

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Fwd: Continued fractions in ConTeXt
by Jairo A. del Rio 30 Jun '20

30 Jun '20

Hi list! I've tried adapting the following code for continued fractions: %https://tex.stackexchange.com/questions/73195/how-to-typeset-a-continued-fraction-in-the-following-format \documentclass{article}\usepackage{amsmath} \begin{document}\newcommand*{\cofrac}[2]{% {% \rlap{$\dfrac{1}{\phantom{#1}}$}% \genfrac{}{}{0pt}{0}{}{#1+#2}% }%}\[ a_0 + \cofrac{a_1}{ \cofrac{a_2}{ \cofrac{a_3}{ \genfrac{}{}{0pt}{0}{}{\ddots} }}}\]\end{document} As I could read from the mailing list, ConTeXt no longer supports \genfrac, so I've tried the following using \definemathfraction \definemathfraction[gefrac][cfrac] \setupmathfraction[gefrac][rule=no] \def\cofrac#1#2{% {% \rlap{\cfrac{1}{\displaystyle\phantom{#1}}}% \gefrac{}{\displaystyle\gefrac{#1+}{}#2}% }% } \def\cofracnorule#1#2{% {% \rlap{\gefrac{\displaystyle\phantom{1}}{\displaystyle\phantom{#1}}}% \gefrac{}{\displaystyle\gefrac{#1}{}#2}% }% } \def\endfrac#1{\cofracnorule{#1}{\phantom{1}}} \startTEXpage \startplacefigure[location=force,number=no] \externalfigure[cofrac.png] \stopplacefigure \startformula \alpha + \cofrac{\alpha'}{\cofrac{\alpha''}{\cofrac{\alpha'''}{{\endfrac{\ddots}}}}} \frac{1}{\alpha'''} \stopformula \stopTEXpage Mmm, superscripts and fraction rules superpose, so indeed something is wrong. Any ideas or references to a better result? I've attached the expected result (it's from Legendre's Théorie des nombres) and a normal fraction for comparison. Thank you very much. Jairo :)

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Re: [NTG-context] CONTEXT for OpenBSD 6.7
by Hans Hagen 30 Jun '20

30 Jun '20

On 6/30/2020 5:32 PM, Stephan Ruhnke wrote: > I have noticed that the new packages for OpenBSD 6.7 are already listed on your website but it seems that the zip files are not yet downloadable. I just want to be sure that files will soon be available and that no mistake slipped in when you uploaded the files. Thank you for all your work! Actually, I just generated installer zips for 6.7 as mOjca got it all working. We dropped 6.5 in the process. (At some point the garden can have these installer files too as they are just files with no further dependencies but there has to be a dns or web server entry for it then.) 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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Commands with arguments before in ConTeXt
by Jairo A. del Rio 30 Jun '20

30 Jun '20

I've read the following is not possible in TeX \def#1\macro{blabla#1} where arguments come before. The only partial exceptions are commands like \atop or \over, which are in fact primitives. Is there a way to do this in ConTeXt? Could it be a feature request for LuaMetaTeX? I've seen Hans experimenting a lot with new primitives and new possibilities for arguments, like #0 and co., so I ask in case it's not too nonsensical to propose it. Regards Jairo :)

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missing command for xmlinfo in latest?
by Pablo Rodriguez 29 Jun '20

29 Jun '20

Dear list, I have the following sample: \startbuffer[demo] <document> text </document> \stopbuffer \startxmlsetups xml:demo:base \xmlsetsetup{#1}{document}{xml:demo:doc} \stopxmlsetups \xmlregistersetup{xml:demo:base} \startxmlsetups xml:demo:doc \xmlinfo{#1} \xmlflush{#1} \stopxmlsetups \starttext \xmlprocessbuffer{main}{demo}{} \stoptext It crashes with latest form 2020.06.29 19:47, because of the use of \xmlinfo and some undefined command. Could anyone confirm the issue? Many thanks for your help, Pablo -- http://www.ousia.tk

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spacing before items
by Mike Cooper 29 Jun '20

29 Jun '20

Hello list, Another very simple issue-no doubt the answer is right in front of me but I can't find it or figure it out... (Please let me know where it is!) I want more space before each top-level item. MWE: \defineitemgroup[mdshw][levels=2] \setupitemgroup[mdshw][1][n] \setupitemgroup[mdshw][2][a, packed, 1*broad][left=(, right=), stopper=] \starttext \startsection{First Section} \startmdshw \item Choose the correct answer. \startmdshw \item This one \item This one \item This one \stopmdshw \item Choose the correct answer. \startmdshw \item This one \item This one \item This one \stopmdshw \item Choose the correct answer. \startmdshw \item This one \item This one \item This one \stopmdshw \startmdshw \stoptext THANK YOU!! Mike Cooper Technical Trainer Murchison Drilling Schools, Inc. 2501 Juan Tabo NE Albuquerque, NM 87112 Tel: (505) 293-6271 Fax: (505) 298-5294 Email: mike(a)murchisondrillingschools.com<mailto:mike@murchisondrillingschools.com> Website: www.murchisondrillingschools.com<http://www.murchisondrillingschools.com/> [cid:image007.jpg@01D03ADC.BD6E6850]<https://www.facebook.com/pages/Murchison-Drilling-Schools/158018484232622> [cid:image008.jpg@01D03ADC.BD6E6850] <http://www.linkedin.com/company/murchison-drilling-schools-inc-> [cid:image009.jpg@01D03ADC.BD6E6850] <https://twitter.com/trainingmds> Murchison Drilling Schools is now part of [cid:image001.png@01D63515.857FD120]

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Converting from LaTeX for PDF accessibility tagging?
by Alasdair McAndrew 29 Jun '20

29 Jun '20

Hello, I tried ConTeXt a few years ago, then gave up on it because of its wordiness and verbosity. The 2006 article on creating AMSTeX output in ConTeXt at https://www.ntg.nl/maps/34/06.pdf shows exactly what I mean: the LaTeX commands are small and neat; the ConTeXt commands are not. However, I need now to use ConTeXt for accessibility tagging, so I'm prepared to give it another try. And this means converting some LaTeX documents into ConTeXt. Is there a better way than using pandoc? I ran a LaTeX document through pandoc, but the result is certainly not fully "ConTeXt compliant", and generates errors instead of compiling. I can get easily lost on the ConTeXt site: the documentation is there in plenty, but seems hard to search. The main problem for me is mathematics and alignment: not just for equations, but for matrices and arrays. What I'd love - if it exists - is a document showing how to rewrite LaTeX into ConTeXt. Something like the above document, which is now 14 years old. I also notice that much of the contextgarden wiki is outdated. For example, on the use of ConTeXt in MikTeX, we read "As of end of June 2011 MikTeX is still (or again) non-functional." I'm aware that all of this is the work of dedicated and unpaid volunteers, so this is not a complaint! Just an observation. Anyway, as I say, my main issues are converting LaTeX into ConTeXt. and dealing with mathematics. Any pointers would be gratefully received! Thanks, Alasdair -- https://numbersandshapes.net

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