ntg-context September 2022

ntg-context@ntg.nl

50 participants
70 discussions

About macro numberstriped ()
by Fabrice Couvreur 02 Oct '22

02 Oct '22

Hello, I notice a strange behavior of the macro numberstriped ( ). Thanks. Fabrice \starttext \switchtobodyfont[9pt] \startMPcode path p, q, r, b ; p := unitsquare xyscaled (4cm,4cm) ; z[0] = (2cm,0cm) ; z[1] = (2cm,4cm) ; z[2] = (0cm,2cm) ; q := llcorner p--z[0]--z[1]--z[2]--cycle ; r := unitsquare xyscaled (1cm,1cm) shifted(0,3cm) ; b := unitsquare xyscaled (3cm,3cm) shifted(1cm,0) ; draw p ; draw r withcolor red; draw r numberstriped (.25,20,5) withcolor magenta ; draw b numberstriped (.25,20,5) withcolor magenta ; label.llft("D", p) ; label.lrt("C", p) ; label.ulft("A", p) ; label.urt("B", p) ; label.urt("P", lrcorner r) ; label.lft("Q", llcorner r) ; label.top("M", urcorner r) ; \stopMPcode \stoptext

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Missing letters and numbers in printout
by Angel M Alganza 29 Sep '22

29 Sep '22

Hello, I have a document that includes some grids (drawn with \grid) as well as alphanumeric information (letters and numbers) which contents (the info, not the grids) I modify every year and then print it out. I've been using it without any problem for a few (maybe 4 or 5) years but, this time, only the grid showed up on the printout, but none of the letters or numbers would, using the same printer I used every time before. I always copy the PDF file into a USB stick that I bring to the (departamental) printer, plug it in the printer and directly print from it. I tried printing the same file (from the same USB drive) into a different printer, this time connected to a computer, and sending the file from it, which worked just fine. My guess is that the first printer in missing the font the document uses, whereas the second printer received the font from the computer (Devuan Linux), which has the appropriate font. Could that be correct? In all previous ocasions I used the version of ConTeXt included in Texlive on Devuan, but a few months ago I decided to install ConTeXt using the official distribution instead. Could that explain the change in behaviour I'm seeing? Could it be that the previous versions I used somehow embeded the fonts into the PDF file but the current one doesn't? And, if that's really the case, how could I force the font to be included into the PDF file? I remember I read something like that a very long time ago (probably about LaTeX, not ConTeXt), but I haven't found how to do it now in a few searches on the documentation. Thak you for any help or advice. Cheers, Ángel

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LMTX incompatibility in \meaning breaks TikZ, other minor issues
by Leah Neukirchen 29 Sep '22

29 Sep '22

Hi, I'm trying to get tikz-cd to run on LMTX and some examples already work fine, but I had a problem with text on arrows. To reproduce: \usemodule[tikz] \usetikzlibrary[cd] \starttext \starttikzcd A \arrow{r}{A} \NC B \NR \stoptikzcd \stoptext This builds fine on MkIV from TeXLive 2022 with LuaTeX, but on LMTX I get: system > ConTeXt ver: 2022.09.11 20:44 LMTX fmt: 2022.9.20 int: english/english ... close source > level 2, order 63, name 'tikzlibrarycd.code.tex' fonts > preloading latin modern fonts (second stage) fonts > 'fallback modern-designsize rm 12pt' is loaded tex error > tex error on line 8 in file ./tik.tex: Package pgfkeys Error: I do not know the key '/tikz/"{A}"{}' and I am going to ignore it. Perhaps you misspelled it.^^J...^^Jl.7 I think the culprit is a tikzcd arrow in cell 1-1 After a bunch of debugging, it turns out that LMTX breaks the TikZ 'quotes' library, which works using code ala: \def\tikz@enable@node@quotes{% \pgfkeyssetvalue{/handlers/first char syntax/the character "}{\tikz@quote@parser}% \let\tikz@quotes@as\tikz@node@quotes@as% } The last part of the /-key is derived from \meaning, but in LMTX, \meaning" is "the character U+0022 'quotation mark'" and thus the key cannot be found. I have patched TikZ for now to match for this alternate string too. But perhaps it would be better for compatibility to agree with the original TeX \meaning strings for the 7-bit ASCII subset at least. I found another minor nit that's not really triggering a bug but still a difference to LuaTeX: \eTeXrevision should expand to .2, but it expands to 2 in MkIX. There is some code out there which uses constructions like \number\eTeXversion\eTeXrevision or even \ifdim 0\XeTeXrevision pt > 0.9996pt As LMTX doesn't care about this macro, this should be easy to adjust. Thanks, -- Leah Neukirchen <leah(a)vuxu.org> https://leahneukirchen.org/

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strange issue with hyphens
by Pablo Rodriguez 28 Sep '22

28 Sep '22

Dear list, I’m experiencing a weird issue with hyphenation: \setuphyphenation [method=traditional] \starttext \hyphenatedword{a-legibility-c} \sethyphenationfeatures [strict] \hyphenatedword{a-legibility-c} \stoptext I need the setup hyphenation commands to get underscore hyphenation. But how can I make that strict hyphenation features behave as standard hyphenation ones? I mean, that the first hyphen doesn’t get doubled and that hyphenation is also enabled after the first hyphen. I don’t know whether the strict hyphenation features are misbehaving here or I am missing something very basic here. Many thanks for your help, Pablo

1 0

Command for specifying et al limit
by Jethro Djan 28 Sep '22

28 Sep '22

Dear list, I am trying to specify that 'et al’ should be appended after the first author if paper has multiple authors. It seems from the mkiv-publications.pdf manual that it should work like this but it doesn’t. Here is my MWE: \startbuffer[ref] @Article{bb:2017, author = {Bronstein, Michael M. and Bruna, Joan and Cohen, Taco and Veličković, Petar}, journal = {arXiv preprint arXiv:2104.13478}, title = {Geometric Deep Learning: Grids, Groups, Graphs, Geodesics, and Gauges}, year = {2021}, } \stopbuffer \definebtxdataset[ref] \setupbtx[dataset=ref] \definebtxrendering [ref] [apa] [ dataset=ref, ] \usebtxdefinitions[apa] \usebtxdataset[ref][ref.buffer] \setupbtx[ dataset=ref, etaldisplay = 1, etallimit = 1, ] \starttext \cite[author][bb:2017] says in their paper \cite[bb:2017] \startsection[title={References}, number=no, incrementnumber=no] \placelistofpublications[ref][method=dataset] \stopsection \stoptext Thanks in advance. Jethro

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lmtx status
by Hans Hagen 27 Sep '22

27 Sep '22

Hi, At the ctx meeting we released luametatex, that is, the source code is now in the context zip (so it grew a few MB). At the same time Mojca set up some contextgarden repositories on github. We're working on a setup for users to generate older snapshots, if needed (for instance because there are platform changes). She's also working on cmake based installation helpers. One of the things we did was pruning the fonts that are part of the installation. With a few exceptions the type one fonts were dropped, which is most noticeable for math. There is no need for px and tx fonts, they served their puspose in the transition from old style t1 fonts to opentype math (when we started with mkiv; we could have dropped them already). We're looking into antykwa math as well as in alternative script and calligraphic math alphabets so eventually virtual math from t1 construction can be dropped completely (in principle if can be integrated in the tweak mechanisms) because it is not wirth the effort to make them better. That means that we will ship some additional companion fonts. There are math times fonts but they are currently not free and there is some effort going on to turn them opentype so we can ditch their setups too (we can't test anyway; to some extend that is also true for minion math). High on the agenda is euler (in combination with pagella). This also relates to upgraded mixed script and calligraphic support in math. It actually means that enabling alternative alphabets will happen a bit differently (more naturally integrated as we introduced dedicated ranges of slots). Again a side effect is that we have more granular math glyph properties (opentype math is too limited but basically frozen so we have to get over that and move on). We (Mikael and me) also try to compensate for the ommissions and weird things in unicode math but it will take some time before we have that all documented. One of the next uploads will have the pruned / upgraded texmf tree (one can always install more in the local tree of course). At some point installing from the garden (or from a git clone) will also be supported (basically anyone can host a lmtx install). For the next texlive we hope to switch to lmtx as default and that also means that luametatex is the runner then. One can (as currently in lmtx) always run luatex with "--luatex". Als-in-all it's a lot of work but we're getting there. 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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new hash for buffer (as file)
by Pablo Rodriguez 27 Sep '22

27 Sep '22

Dear list, playing with buffer contents, I have the following file: \setupinteraction[state=start] \setupinteractionscreen[option={attachment}] \startbuffer[test] just a test and another one \stopbuffer \starttext \ctxlua{require("util-sha")} \def\shabuffer#1% {\cldcontext{utilities.sha2.hash256(buffers.raw("#1"))}} \def\shafile#1% {\cldcontext{utilities.sha2.hash256(io.loaddata("#1"))}} \def\shabufferfile#1% {\cldcontext{utilities.sha2.hash256(buffers.raw("#1"))}} \shabuffer{test} \savebuffer[test][temporary-αβγ, prefix=no] \shafile{temporary-αβγ} \attachment[buffer=test, name=\shabufferfile{test}, method=hidden] \stoptext I mean, to get hash of the file attached to the document, I need to save the buffer for "context(utilities.sha2.hash256(io.loaddata(buffer)))". But I don’t need to save the buffer to attach it to the PDF document. My question is how to define \shabufferfile to avoid \savebuffer (only required to get the hash). An approach would be the following one. If I’m not totally wrong, "savebuffer" (https://github.com/contextgarden/context/blob/main/tex/context/base/mkxl/bu…) may be just replacing new lines with "\n" in the original buffer (https://github.com/contextgarden/context/blob/main/tex/context/base/mkxl/bu…). The function string.replacenewlines() is defined at https://github.com/contextgarden/context/blob/main/tex/context/base/mkiv/ut…. If I’m not totally wrong about savebuffer replacing newlines with "\n", I wonder how to create a temporary buffer with such a replacement, so that it could be hashed later. I hope my question is clear. Many thanks in advance for your help, Pablo

3 8

PDF viewer
by Henning Hraban Ramm 26 Sep '22

26 Sep '22

Hi all, I compiled a kind of wishlist what we need or look for in a new or enhanced open source PDF viewer, as discussed e.g. at the 2021 meeting. https://wiki.contextgarden.net/PDF_viewer I’d like to further the subject to find a developer (or a team) and make this a reality. (Of course I’d be happy to have Michal on board!) Feel free to enhance the wiki page or discuss here. I suggest we’ll discuss funding in the context group board, but there was also a discussion about fundraising at the 2022 meeting that I didn’t follow – I think Paulo said he had experience in fundraising? Hraban

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IBM Plex updates
by Henning Hraban Ramm 26 Sep '22

26 Sep '22

Hi, just for information: There were new releases of the IBM Plex fonts recently: https://github.com/IBM/plex/releases They’re now at version 2.3. Some faces were annoyingly renamed (Semi Bold and Medium to SmBld and Medm). Hraban

2 1

Spacing in \unit
by Gavin 25 Sep '22

25 Sep '22

Hello list, I have a few questions about space produced by the unit command. Consider this MWE \starttext \unit{3.00e8 kg m/s} $\unit{3.00e8 kg m/s}$ \stoptext The dot between “kg” and “m” has different spacing depending on whether the \unit command is in text or math mode. I think that the tighter spacing in the first one, in text, is correct. I personally would also like less space around the \times. To me, the number 3.00e8 should be typeset more like a single number, rather than like a product of 3.00 and 10^8. I am probably in the minority here. If \unit and \digit had an option for tighter spacing around the \times, I’d use it, but the current output with more space is probably what most people expect and want. Perhaps something like [scispace=tight]. Finally, \unit does not play nicely with surrounding spaces. For example: $2\pi\,\unit{3.00e8 kg m/s}$ causes a fatal error: tex error > tex error on line 9 in file ./Untitled.tex: Incompatible glue units (case 1) <macro> \phys_units_direct #1->\begingroup \the \everyunits \ifdim \lastskip >\zeropoint \settrue \c_phys_units_dospace \removelastskip \fi \c_phys_digits_method \unitparameter \c!method \relax \ifmmode \else \dontleavehmode \fi \edef \currentunit {#1}\always\edef \unitlanguag <line 3.9> $2\pi\,\unit {3.00e8 kg m/s}$ Using \thinspace produces the same fatal error. Putting the 2\pi after the \unit{…} can also cause surprises. $\unit{3.00e8 kg m/s}\times 2\pi$ produces a \times that is right up against the “s”. I am very happy with all of the work done on spacing in math. I hope that my observations above are helpful in fine-tuning the excellent system. Thanks! Gavin P.S. I am on as M1 Mac, using ConTeXt ver: 2022.09.11 20:44 LMTX fmt: 2022.9.25 int: english/english.

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ntg-context September 2022