September 2021 - ntg-context - NTG Mailing Lists

LuaMetaTEX as LaTeX to XHTML/ePub transpiler?
by Hugh Fisher 11 Sep '21

11 Sep '21

I have documents in LaTeX, and would like to generate XHTML (ePub) output without going through an intermediate DVI or PDF step. Markup to markup, translating or transpiling rather than typesetting. My use case is that I have two tabletop gaming books, 60 - 80 pages of text and diagrams, written for pdfLaTeX and now with XeLaTeX. I'm very happy with LaTeX and the wonderful PDF output for print. But now I also want to create ePub/XHTML as well as print versions. So far I've tried tex4ebook and tex4ht and neither works for me. Firstly, some of the LaTeX commands are not recognised or causing errors. And secondly, when I managed to get a small test section to work, the generated XHTML/HTML is very large, full of tiny s. The problem seems to be that tex4ht runs TeX which typesets everything into DVI with every element carefully placed on a page, and then tex4ht tries to reverse that back into HTML. All this extra HTML will slow down / interfere with the ebook reader which is doing the final page layout at runtime on a particular device. How I would like it to work is directly from LaTeX to HTML without any low level typesetting. If I have a LaTex source paragraph This is some text with \textbf{some parts} in bold. The <whatever>TEX will copy the source text to the destination. If there's a TeX command, here \textbf, it looks for a Lua function with that name and invokes it with whatever argument text is present. The Lua function emits , then recursively processes the argument text, then emits . Similarly there would be an implied lookup of \beginParagraph and \endParagraph which would emit and . Plain text just gets copied through unchanged. So (finally) my question: is LuaMetaTEX what I'm looking for? Yes is the answer I'm hoping for. And any guidance would be much appreciated. No, but best starting point? I've never tried modifying TeX code itself, but I am an experienced and sometimes competent programmer. who has written a compiler parser and a high level code generator. No and not a good idea to try? Any other responses? -- cheers, Hugh Fisher

4 9

Default page layout
by kauśika cittūr 11 Sep '21

11 Sep '21

Dear List, I am using LMTX 2021.08.30 19:56. I have the following example – \starttext \showlayout \input knuth \stoptext which yields an output (attached here) with a "asymmetric" layout. Am I doing something wrong? Or have I missed something? Please advise. Thanks, kauśika

2 3

If you really absolutely need more capacity, you can ask a wizard to enlarge me
by Marcus Vinicius Mesquita 10 Sep '21

10 Sep '21

Dear list, In the MWE below, ConTeXt lmtx throws an error with the message in the title: \starttext \startluacode local upperlimit = 90000 context.starttabulate({ "|l|l|l|" }) for i=1,upperlimit do context.NC() context("word 1") context.NC() context("word 2") context.NC() context("word 3") context.NC() context.AR() end context.stoptabulate() \stopluacode \stoptext But it compiles with no problems with MKIV. context version: 2021.09.06 11:47 How to avoid this with lmtx? TIA Marcus Vinicius -- Todas as coisas fatigam o corpo, salvo a música, que não fatiga nem o corpo nem seus membros, por ser descanso da alma, primavera do coração, distração do aflito, entretenimento do solitário, e viático do viajante. Kunnâsh al-Hâ'ik (Cancioneiro de al-Hâ'ik)

2 5

Why do we install context in $HOME/bin?
by juh 10 Sep '21

10 Sep '21

Dear all, the installation documentation on the wiki says: mkdir $HOME/bin/context cd $HOME/bin/context wget http://lmtx.pragma-ade.nl/install-lmtx/context-linux-64.zip unzip context-linux-64.zip sh install.sh AFAIR we had $HOME/context before. Is this intended? Is it because $HOME/bin is often in $PATH by default? What is the advantage to do it like this? juh -- Autoren-Homepage: ......... http://literatur.hasecke.com Satiren & Essays: ......... http://www.sudelbuch.de Privater Blog: ............ http://www.hasecke.eu Netzliteratur-Projekt: .... http://www.generationenprojekt.de

1 0

(neo)vim support & Lua
by Saša Janiška 09 Sep '21

09 Sep '21

Hello, some months ago there was a 0.5 release (https://neovim.io/news/2021/07) of Neovim which brings support for Lua language to a new level - "Lua as a first-class scripting and configuration language". Moreover, Neovim now it also has built-in LSP client...so, I wonder if there is some work planned to improve Vim support for ConTeXt by taking advantage of those new development related to Neovim? Sincerely, Gour -- Just try to learn the truth by approaching a spiritual master. Inquire from him submissively and render service unto him. The self-realized souls can impart knowledge unto you because they have seen the truth.

2 1

io.loaddata() or buffer.assigns()
by Thierry Horsin 08 Sep '21

08 Sep '21

Hi everybody Are there any type of files that is required by io.loaddata or/and buffers.assign ? The following code works pretty well if there is no compilation problem by g++. But it fails, i.e. \typebuffer[Mybuffer], does not produce anything if g++ fails (due to some errors in the cpp) I have checked that err.cpp is well and truly created when g++ fails. \startluacode io.savedata("complx.h",buffers.getcontent("MyBuffer1")) io.savedata("complx.cpp",buffers.getcontent("MyBuffer2")) io.savedata("testcomplx.cpp",buffers.getcontent("MyBuffer3")) local l=os.execute("g++ -O3 -Wall -o testcomplx testcomplx.cpp complx.cpp 2> err.cpp") if l==0 then os.execute("./testcomplx > testcomplx.tmp") buffers.assign("MyBuffer",io.loaddata("testcomplx.tmp")) else buffers.assign("Mybuffer",io.open("err.cpp","r")) end \stopluacode Many thanks Thierry

1 0

Re: [NTG-context] zint barcode module on LMTX/MacOS
by Henning Hraban Ramm 08 Sep '21

08 Sep '21

> Am 07.09.2021 um 23:27 schrieb Floris van Manen <vm(a)klankschap.nl>: > > Hello Hraban, > > > On 07/09/2021 21:03, Henning Hraban Ramm via ntg-context wrote: >> Since I got zint running (thanks, Hans!), there’s now a wiki page: >> https://wiki.contextgarden.net/Barcodes > > > I followed the instructions on the wiki, but still get an empty page. > I compiled the libzint.so and installed it into /usr/local/lib/ > > Given my local path definitions: > export TEXMF=$HOME/context > export LMTXPATH=$TEXMF/tex/texmf-linux-64/bin > export PATH=$LMTXPATH:$PATH > export TEXROOT=$TEXMF/ctx > > I placed a symbolic link in the folder > > $LMTXPATH/lib/luametatex/zint/libzint.so -> /usr/local/lib/libzint.so > > did the mtxrun --generate > > Trying the example: > > \usemodule[zint] > \starttext > \barcode[alternative=isbn, text=9783865419026, width=4cm] > \barcode[alternative=qr code, text={https://wiki.contextgarden.net}, width=3cm] > \stoptext > I just checked on my Linux laptop with a new installation, and it worked exactly like this. Did you check with --luatex (i.e. MkIV)? What’s your ConTeXt version? You left out this essential piece of information. Hraban

2 1

(no subject)
by Marcus Vinicius Mesquita 08 Sep '21

08 Sep '21

Dear list, Let's say we have two types of synonyms: \definesynonyms[Abrev][Abrevs][\AbrevExp][\AbrevComp] \definesynonyms[Rubrica][Rubricas][\RubricaExp][\RubricaComp] Is it possible to combine them in a unique list of merged Abrevs and Rubricas? TIA Marcus Vinicius -- Todas as coisas fatigam o corpo, salvo a música, que não fatiga nem o corpo nem seus membros, por ser descanso da alma, primavera do coração, distração do aflito, entretenimento do solitário, e viático do viajante. Kunnâsh al-Hâ'ik (Cancioneiro de al-Hâ'ik)

1 0

modules not found
by Hans van der Meer 08 Sep '21

08 Sep '21

Here is something I do not understand about \usemodule. My modules are in two places because I wanted development and production separated: (1) Volume/TeX/texmf/modules/ (2) Volume/TeX/texmf/modules-new/ Unexpected and suddenly loading files from the first directory does not occur any longer: modules > 'hvdm-tak' is not found But modules from modules-new load without a hitch: modules > 'hvdm-load' is loaded I have discard the caches and rebuilt them to no avail. Then trying mtxrun --locate filename does not show any location not even from the files that are loaded, just an empty line. What happens inside \usemodule to cause this? I confess being baffled. And how to convince ConTeXt to find all my modules? dr. Hans van der Meer

2 2

zint barcode module on LMTX/MacOS
by Henning Hraban Ramm 08 Sep '21

08 Sep '21

Hi again, the LMTX zint module uses libzint, while MkIV calls the zint binary. The latter works for me, the first not. On MacOS, the library is "/opt/local/lib/libzint.dylib"*. I changed that in the source and the file appears to be found. Could you add that, Hans? *) Previously, zint for MacOS was only available via HomeBrew; I don’t know where that would install libzint, probably in /usr/local/lib/ like on Linux. Yesterday a MacPorts port was added that I used; MacPorts install everything under /opt/. But then still zintlib.execute returns nothing. I wonder if this works on Windows? The API docs don’t mention an "execute" function. https://www.zint.org.uk/manual/chapter/5 Hraban

4 11