July 2021 - ntg-context - NTG Mailing Lists

\xmlrefatt as node?
by Pablo Rodriguez 19 Jul '21

19 Jul '21

Dear list, I have the following sample: \startbuffer[test] <document> <div id="section-i17a" class="section level1 hidden"> <p id="par-i17"><a href="par-i17">1</a></p> </div> <div id="section-i18a" class="section level1 hidden"> <p id="par-i18"><a href="par-i17">2</a></p> </div> <div id="section-i19a" class="section level1 hidden"> <p id="par-i19"><a href="par-i17">3</a></p> </div> </document> \stopbuffer \startxmlsetups xml:testsetups \xmlsetsetup{#1}{*}{-} \xmlsetsetup{#1}{document|div|p|a}{xml:flushing} \xmlsetsetup{#1}{a}{xml:*} \stopxmlsetups \xmlregistersetup{xml:testsetups} \startxmlsetups xml:flushing \xmlflush{#1} \stopxmlsetups \startxmlsetups xml:a \xmlattribute{#1}{ancestor::div[@class='section level1 hidden']}{id}\\ \xmlrefatt{#1}{href}:\ \doifelse {\xmlrefatt{#1}{href}} {\xmlattribute{#1}{ancestor::div[@class='section level1 hidden']}{id}} {yes}{no}\blank \stopxmlsetups \starttext \xmlprocessbuffer{main}{test}{} \stoptext I need to check whether the link is inside the same div or not. I know how to obtain the destination identifier (\xmlreffatt{#1}{href} and I know how to obtain the identifier of the contaning div (\xmlattribute{#1}{ancestor::div[@class='section level1 hidden']}{id}}). But I don’t know how to ge the identifier of the div which contains the destination idetifier. How could I get that? Many thanks for your help, Pablo -- http://www.ousia.tk

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Re: [NTG-context] Problem getting lmtx version up
by jdh 18 Jul '21

18 Jul '21

Mojca, sorry I missed you query about the location of the image zip. I used: https://downloads.raspberrypi.org/raspios_arm64/images/raspios_arm64-2020-0… But the lite version you mention below should use the same library. > ....Does this look like the correct place for fetching the images with Debian 10? > https://downloads.raspberrypi.org/raspios_lite_arm64/images/raspios_lite_ar… > > Mojca Regards, Jay p.s. I'm away from the rpi now but will try out the new runtime prog you sent and get back to you. --- END

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languages
by Hans van der Meer 18 Jul '21

18 Jul '21

Here is something I think that should be added to the documentation. In the ConTeXt garden (page Command/mainlanguage) the description is: mainlanguage Set the language of auto-generated language elements, like the title of the table of contents or the appendix. On the Command/language page: Change the hyphenation rules, quotation marks, all that sort of thing, to that of a different language. (The default language is English.) Testing showed that \mainlanguage sets both \currentlanguage and \currentmainlanguage to the same value, while \language sets \currentlanguage only. My suggestion is to add info to this behaviour to the mainlanguage page, reflecting the fact that \mainlanguage does set both \currentlanguage and \currentmainlanguage.Which is not apparent from the current documentation. Another solution would be to separate \language and \mainlanguage completely. An option I would prefer for clarity, because now the order of calling \language and \mainlanguage makes a difference. dr. Hans van der Meer

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Problem getting lmtx version up
by jdh 18 Jul '21

18 Jul '21

# # I followed all instruction for downloading context-lmtx, then did the rsync # procedures, then a another # # $ sudo sh ./install.h # # I get the following error: /opt/context-lmtx $ sudo sh ./install.sh Error: /opt/context-lmtx/bin/mtxrun: /lib/aarch64-linux-gnu/libm.so.6: version `GLIBC_2.29' not found (required by /opt/context-lmtx/bin/mtxrun) # My system has GLIBC 2.28, but I don't know how to upgrade it for RPis cp: cannot stat '/opt/context-lmtx/tex/texmf-linux-aarch64/bin/mtxrun': No such file or directory cp: cannot stat '/opt/context-lmtx/tex/texmf-context/scripts/context/lua/mtxrun.lua': No such file or directory cp: cannot stat '/opt/context-lmtx/tex/texmf-context/scripts/context/lua/mtx-install.lua': No such file or directory Thanks, jay ---------

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(no subject)
by T. Kurt Bond 18 Jul '21

18 Jul '21

I have the following file: \setupfloat[table][default=nonumber] \starttext \section[title={Tables without force}] Here is a table without a caption, unforced. \startplacetable[location=none] \bTABLE \bTR\bTD r1c1 \eTD\bTD r1c2\eTD\eTR \bTR\bTD r2c1 \eTD\bTD r2c2\eTD\eTR \eTABLE \stopplacetable Here is a table with a caption, unforced. \startplacetable[title={Table With A Caption}] \bTABLE \bTR\bTD r1c1 \eTD\bTD r1c2\eTD\eTR \bTR\bTD r2c1 \eTD\bTD r2c2\eTD\eTR \eTABLE \stopplacetable This is after the table with a caption. \section[title={Tables with force}] Here is a table without a caption, forced. \startplacetable[location={force,none}] \bTABLE \bTR\bTD r1c1 \eTD\bTD r1c2\eTD\eTR \bTR\bTD r2c1 \eTD\bTD r2c2\eTD\eTR \eTABLE \stopplacetable Here is a table with a caption, forced. \startplacetable[title={Table With A Caption},location=force] \bTABLE \bTR\bTD r1c1 \eTD\bTD r1c2\eTD\eTR \bTR\bTD r2c1 \eTD\bTD r2c2\eTD\eTR \eTABLE \stopplacetable This is after the table with a caption. \stoptext The second pair of tables have force added. Here is what I get: [image: image.png] Why does the last table have "Table 1", when there is a \setupfloat[table][default=nonumber]? -- T. Kurt Bond, tkurtbond(a)gmail.com, https://tkurtbond.github.io

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date formatting
by Hans van der Meer 18 Jul '21

18 Jul '21

From Wikipedia: In English-language <safari-reader://en.wikipedia.org/wiki/English_language> outside North America (mostly in Anglophone Europe and some countries in Australasia), full dates are written as 7 December 1941 (or 7th December 1941) and spoken as "the seventh of December, nineteen forty-one" (exceedingly common usage of "the" and "of"), with the occasional [my emphasis] usage of December 7, 1941 ("December the seventh, nineteen forty-one"). In common with most continental European usage, however, all-numeric dates are invariably ordered dd/mm/yyyy. From this I infer that \language[en] or \language[en-gb] should format dates normally in day-month-year order, reserving mont-day-year for \language[us] i.e. language[en-us]. But in ConTeXt both \language[en] and \language[en-gb] produce the us ordering for \currentdate. I would be pleased if ConTeXt could be changed to the above mentioned normal behaviour for english. That is [en] and [en-gb] produce the day-month-year order and that [us] and [en-us] month-day-year. dr. Hans van der Meer

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Moving the old book-structure to a recent ConTeXt
by Gerben Wierda 18 Jul '21

18 Jul '21

Years ago I wrote a book (Chess and the Art of Enterprise Architecture) using ConTeXt. The setup was (I think Taco’s) basic book project setup, with a chapters, environments, products, etc. subdirectory where you work in the chapters directory and can both produce individual chapters and the whole book. The main tool to produce was texexec. ConTeXt has moved on considerably since then (2014-2015). So, I tried teh old project to see if it still works, but found out it didn’t. There still is a texexec in my MacTeX, but the compilation fails: texexec --pdf --mode=SCREEN ../products/prd_book.tex resolvers | initialization | fatal error: kpse library is accessed (key: original) Is there a new ‘book’ project structure/template for the modern/standalone ConTeXt? Note, I have both a standalone ConTeXt (for another project) and the MacTeX distribution on my system. PATH: /Library/TeX/texbin:/usr/local/context-osx-64/tex/texmf-osx-64/bin: Thanks, 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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Re: [NTG-context] Problem getting lmtx version up
by Michal Vlasák 17 Jul '21

17 Jul '21

On Sat Jul 17, 2021 at 7:30 AM CEST, Lutz Haseloff wrote: > both binaries work in my system. > (Galaxy A50, Userland, Kali Linux) On Sat Jul 17, 2021 at 10:47 AM CEST, jdh wrote: > Both binaries you provided ran successufully. I ran them both and they > both exited with a 0 return code, when invoked with only the --help > options. > > System ran on: > HW: Raspberry Pi 4 Model B Rev 1.4 > CPU: ARM aarch64 > RAM: 8GB > SSD: 1TB > > OS: aarch64 - Raspberry Pi 64 bit OS. Based on Debian/Linux 10 Lutz, jdh, thanks for testing, great to hear that it works! Although now it remains to apply this technique to LuaMetaTeX. Without access to source code I can't try anything, but the general ideas should apply: I used Zig for cross compiling. While Zig is a full fledged programming language in its own right, it also has the ability to compile C/C++ (with built-in Clang). The more interesting part is that it also bundles different C libraries for the different targets it supports for cross compilation. This is a great match for Lua(Meta)TeX, because standard C library is the only "external" dependency. Depending on the chosen target (CPU+OS+ABI triple), the binary can then be fully statically linked or dynamically linked against the target's system C library. Zig exposes the "C compiler" functionality with two interfaces: the Zig build system and the "zig cc" command. In theory "zig cc" should be a drop-in replacement for "clang" or "gcc" [1] and therefore should be usable with existing build systems used by LuaTeX/LuaMetaTeX. In practice it is not that easy, because some "compiler feature detections" of these build systems often try to run compiled results (and fail). But in the best case (like with Lua) cross compilation may be as easy as: # "bsd" is almost like "linux", but doesn't link "readline" make CC="zig cc -target aarch64-linux-musl" bsd The result is a fully statically linked executable, that can be used on all Linux distributions. But because it is statically linked, dynamic loading of external Lua libraries written in C is not possible. The following will result in a binary that is dynamically linked against (the target system) glibc and should be able to load even Lua libraries written in C: make CC="zig cc -target aarch64-linux-gnu.2.28" bsd (Note that Zig support all relevant glibc versions, that means that compiling for older Linux distributions can be done from any OS, not just ancient Debian or CentOS. Here "2.28" is old enough to support jdh's Raspberry Pi OS -- and anything newer.) Applying this to LuaMetaTeX may or may not be hard. Frankly I don't know much about CMake. But I have experience converting LuaTeX (or rather its subset) to another build systems: 1) https://github.com/vlasakm/mmtex/blob/ltex/build.zig This was used to produce the two binaries I sent previously. Usage (no setup required): wget 'https://github.com/vlasakm/mmtex/archive/refs/tags/cross-test2.zip' unzip cross-test2.zip cd mmtex-cross-test2/ wget 'https://ziglang.org/download/0.8.0/zig-linux-x86_64-0.8.0.tar.xz' tar xf zig-linux-x86_64-0.8.0.tar.xz zig-linux-x86_64-0.8.0/zig build -Dtarget=aarch64-linux-musl qemu-aarch64 zig-out/bin/mmtex --help Something similar should work on Windows/Mac and for other targets (see `zig targets`). 2) https://github.com/vlasakm/mmtex/blob/master/mmtex/files/meson.build This one compiles full LuaTeX, although it doesn't support cross compilation and links to system zlib, libpng and zzliplib. The Zig cross compilation is sadly limited (https://ziglang.org/download/0.8.0/release-notes.html#Tier-1-Support) but not because more exotic systems will never be supported, it's just that nobody did the required work, yet. The support for Linux (various architectures), macOS (aarch64+x86_64) + Windows (x86_64) should be very good. I don't think there is other cross compiler that is able to target the M1 Macs. The Zig build you download from their website [2] is kind of huge, but note that it includes LLVM+Clang+Zig in one single dependency free binary + (efficiently packed) C libraries for many targets. I.e. this is all you need for all your C/C++/Zig. Provided that you (as of now) don't need anything other than Linux/Mac/Windows. Hans, Mojca, is this something worth pursuing for LuaMetaTeX before "native" compilation is available? I am interested in trying. Michal Vlasák [1]: https://andrewkelley.me/post/zig-cc-powerful-drop-in-replacement-gcc-clang.… [2]: https://ziglang.org/download/

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reusableMPgraphic
by Thomas A. Schmitz 15 Jul '21

15 Jul '21

Hi all, I don’t know if I’m overlooking something really basic or if this is a bug. The following MWE compiles with mkiv, but not with lmtx: \startreusableMPgraphic{fold} fill unitsquare xyscaled (1mm,1mm) withcolor blue ; \stopreusableMPgraphic \definelayer[foldingmarkslayer][width=\paperwidth,height=\paperheight] \setlayer[foldingmarkslayer][y=101mm,x=11mm]{\reuseMPgraphic{fold}} \setupbackgrounds [page][background=foldingmarkslayer] \starttext Test \stoptext The error I get: tex error on line 6 in file ./test.tex: Use of \meta_usempgraphic_nop doesn't match its definition Any pointers? Thanks Thomas

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Extract bib entries used in a document
by Benjamin Buchmuller 15 Jul '21

15 Jul '21

I was wondering if there is a way to get the internal bibliography manager to write out a .bib (or XML or Lua table) containing only the entries used in a document? Somewhat similar to BibTeX (https://tex.stackexchange.com/questions/41821/creating-bib-file-containing-…) I guess it must be internally created, but I don't see, at least from the manual, a command like \exportbtxdataset[default][way=bytext][used_references.bib]. Two use cases: (1) Sharing a clean bib file with someone. (2) Merging bib files from different sources based on the document. (Or even by chapter.) Thanks for your reply. Benjamin

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