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Need help processing XML in luacode
by Axel Kielhorn 11 Mar '20

11 Mar '20

Hi, after one year I’m back at a project processing XML with ConTeXt. Here is what I want to do: I have an XML file that I want to format with ConTeXt. I got this working last year. Now I want to take some information from a second file. My idea is to read the second file, store the data into a table and write auxiliary functions to access the data and insert them into the TeX output. When I process the included files with context --environment=prozess-style-ecm.tex prozess.xml I get [ctxlua]:19: table index is nil 12 13 doc = xml.load(doclistfile, settings) 14 15 for v in xml.collected(doc,"/doclist/psdoc/") do 16 -- print ((xml.filter(v,"//docnr/stripped()"))) 17 docnr = (cropstring(xml.filter(v,"/docnr/text()"))) 18 docname = (cropstring(xml.filter(v,"/docname/text()"))) 19 -- es kann mehrere DOCAN geben! 20 docan = (cropstring(xml.filter(v,"/docan/text()"))) 21 docverantwortlich = (cropstring(xml.filter(v,"/docverantwortlich/text()"))) 22 >> docstruktur[docnr]={} The xml.collected works, but the xml.filter returns nil. What did I miss? mtx-context | ConTeXt Process Management 1.03 mtx-context | mtx-context | main context file: /Volumes/Macintosh HD/usr/local/texlive/context-109/tex/texmf-context/tex/context/base/mkiv/context.mkiv mtx-context | current version: 2020.01.30 14:13 mtx-context | main context file: /Volumes/Macintosh HD/usr/local/texlive/context-109/tex/texmf-context/tex/context/base/mkiv/context.mkxl mtx-context | current version: 2020.01.30 14:13 The same code works when I use it in a Lua file that I call with mtxrun --script panalyse.lua Greetings Axel

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Only-black emojis in LMTX
by Alejo Barrio Blaya 11 Mar '20

11 Mar '20

I'm trying to get emojis working. The examples that do, are only printing plain black emojis. Not colors, nor greyscales. I'm using the latest beta of LMTX. Thanks, Alejo

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\bTABLE bug, please help !
by Taco Hoekwater 10 Mar '20

10 Mar '20

Hi, Please see the attached example. The \bTABLE in the footer of the page ‘inherits' the first line of the split \bTABLE in the running text. I have no idea how to fix this or why this even happens. Help! I’ll need a way to work around this problem in my current ConTeXt installation for this project. That is now nearly 4 years old, but the same bug is still happens with a new beta of mkiv. I cannot switch to \startxtable because I would need \startembeddedxtable, and that has way too many limitations to be useful in this project. Best wishes, Taco

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update lmtx / luametatex 2.05
by Hans Hagen 10 Mar '20

10 Mar '20

Hi, I uploaded an update of lmtx. The current version of luametatex is 2.05 which is kind of the first supposedly stable release because it incorperates most of what was on my agenda for the first phase (functionality level 20200229 which was when it happened). Of course I expect there to be bugs but not much that can't be solved fast. This version will be the starting point for Wolfgang and me to explore future possibilities (more deep down in the context source code as well as in the engine). We'll see. Although the performance of lmtx compared to mkiv is hit by more time onsuming backend code, it gets compensated by some optimizations elswehere, a smaller memory footprint, etc. As no one complains about performance it doesn't matter much anyway. Unless you used luajittex there will be no real difference in most cases. We're in tex live code freeze time so I don't want to change much to the lua and tex part of the distribution right now but nevertheless there has been some minor (practical) adaptations in applying fonts that also reflects on mkiv but that should not be noticeable in practice (also because I rejected some adaptations that had a performance impact in mkiv). Mojca and I decided to support yet another platform, this time arm 64 bit for which we use a raspberry pi running ubuntu 64 bit, which brings the platforms supported by the build bot to 15: freebsd freebsd-amd64 openbsd6.5 openbsd6.5-64 openbsd6.6 openbsd6.6-64 linux-armhf linux-aarch64 linux linux-64 osx-64 mswin win64 plus windows-clang-x86_64 and windows-x86_64 because they help to identify issues (and provide useful compiler warnings) but for now we stick to the mingw variants because they run a few percent faster than the (smaller) native windows version. For those interested in tiny machines: the rpi performs roughly one third of what my laptop does which is not bad, although I suppose a more modern intel gen 10 i9 machine will be quite a bit faster. The benchmark is processing the luametatex manual which takes about 12 seconds on the laptop (252 pages, lots of tables, 250+ mp images, 20+ fonts files). A 64 rpi is a little faster than the 32 bit variant. Because tex is a single thread/core process overclocking the little thingie has a positive effect too. Anyway, it makes us confident that when the source gets into the distribution, which depends on the upcoming repository setup and should not interfere with the tl code freeze, users can compile themselves, something that can contribute to a more comfortable feeling of independence of complex and large compilation infrastructures. Hopefully I didn't mess up too much, 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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MathML (mkiv) accent shifted to the left
by Duncan Hothersall 09 Mar '20

09 Mar '20

Hi all. I am reasonably sure that in mkii this overbar accent was placed correctly, but in mkiv it is shifted to the left. Any ideas on how to fix it? MWE: \usemodule[mathml] \starttext This \xmlprocessdata{}{<imath><math xmlns=' http://www.w3.org/1998/Math/MathML'><mover accent="true"><mi>p</mi><mo>&OverBar;</mo></mover></math></imath>}{} isn't right. \stoptext Many thanks, Duncan

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Third party modules in LMTX
by jdh 09 Mar '20

09 Mar '20

I would like to use Wolfgang's t-letter module, but need some help. I found the following instructions: "The ConTeXt suite only comes with Taco's t-bib module. If you want to install a new module, say Wolfgang's t-letter module, you can use first-setup.sh --modules="t-letter" BUT, the LMTX standalone does not have any "first-setup.sh" shell script. Is there another way to install the "t-letter" module for use with LMTX? Any help is appreciated. Thanks Darel

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\registerhyphenationexception not working
by Jano Kula 07 Mar '20

07 Mar '20

Hello Hans, \registerhyphenationexception as described in latest languages-mkiv.pdf and i-context.pdf does nothing, contrary to \startexceptions, which behaves as expected. Here is the minimal example: \mainlanguage[cs] \showmakeup[discretionary] \registerhyphenationexception[cs][cíl-em]% % \startexceptions[cs] % cíl-em % \stopexceptions \startTEXpage cílem \stopTEXpage By the way, what is the reason to print \showlayout on four pages? Regards, Jano

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color
by Hans Hagen 06 Mar '20

06 Mar '20

Hi, As a side effect of svg color manipulations (experiments by ms and me) the next release will have support for hbw colors: {\directcolored[h=.1,b=.2,w=.1]\blackrule[width=3cm,height=3cm]} {\directcolored[h=.1,b=.2,w=.2]\blackrule[width=3cm,height=3cm]} {\directcolored[h=.1,b=.2,w=.4]\blackrule[width=3cm,height=3cm]} {\directcolored[h=.2,w=.1,w=.2]\blackrule[width=3cm,height=3cm]} {\directcolored[h=.2,w=.2,w=.2]\blackrule[width=3cm,height=3cm]} {\directcolored[h=.2,w=.3,w=.2]\blackrule[width=3cm,height=3cm]} not that useful as it's kind of hard to predict but anyway. Just in case someone needs it (which then makes a volunteer for wikifying it). 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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[preventing blackrule tp break line]
by Floris van Manen 06 Mar '20

06 Mar '20

Using lmtx, while trying to get multiple pieces of black rule on one line, for some reason the line breaks after the first item, to continue on the second line with the remainder. \starttext \blackrule[width=15mm,height=1mm,depth=0mm,color=yellow]\quad% \blackrule[width=15mm,height=1mm,depth=0mm,color=red]\quad% \blackrule[width=15mm,height=1mm,depth=0mm,color=green]\quad% \blackrule[width=15mm,height=1mm,depth=0mm,color=blue]\quad \blackrule[width=15mm,height=1mm,depth=0mm,color=yellow]\quad% \blackrule[width=15mm,height=1mm,depth=0mm,color=red]\quad% \blackrule[width=15mm,height=1mm,depth=0mm,color=green]\quad% \blackrule[width=15mm,height=1mm,depth=0mm,color=blue]\quad \stoptext What is the proper way to do it? .F

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Second derivative ''
by Weber, Matthias 05 Mar '20

05 Mar '20

Dear List, \starttext \startformula \left(f\right)'' = f'' \stopformula \stoptext has the second apostrophe set too low. This is in MKIV on ConTeXt live as well as in my slightly older version. What is the “right” way to typeset a second derivative? Thanks, Matthias

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