November 2022 - ntg-context - NTG Mailing Lists

Defineenumeration head offset
by Alexandre Christe 07 Nov '22

07 Nov '22

Dear list, Is there a trick to not apply the leftoffset to the header of a defineenumeration? MWE: \definetextbackground [textFrameEx] [ frame=off, framecolor=darkgreen, rulethickness=2ex, background=, location=paragraph, leftoffset=2.25ex, rightoffset=2.25ex, after={\hrule} ] \defineenumeration [example] [ text=Example, headalign=middle, headcolor=white, headcommand={\inframed[background=color,backgroundcolor=darkgreen,width=\textwidth]}, number=no, before={% \starttextbackground[textFrameEx] }, after={% \stoptextbackground% }, ] \starttext \startexample Blablabla \stopexample \stoptext

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problem with Segoe Ui Symbol as fallback font
by Henning Hraban Ramm 07 Nov '22

07 Nov '22

I’d like to set Segoe UI Symbol as fallback for all missing glyphs. But it doesn’t work, I get an error like registered function call [1145]: ...-14/tex/texmf-context/tex/context/base/mkxl/math-act.lmt:2339: attempt to perform arithmetic on a nil value (field 'depth') stack ... even if there’s no fallback enabled for the math font. \definefontfallback[segoeFB] [name:segoeuisymbol] [0x00300-0x003FF,0x02100-0x02800] [check=yes,force=no] That used to work, at least until version 2022-09-18. It’s completely irregular which ranges throw an error: 0x03000-0x20000 runs 0x02000-0x03000 doesn’t 0x02200-0x027FF doesn’t And the fallbacks also don’t work, even if there’s no error. It seems to depend on the font – I get errors with Segoe UI Symbol, but not with EmojiOneColor or Symbola. I checked with font versions 5.0 and 5.01, don’t have newer ones. Does it work with current versions? Also, a list of fallbacks doesn’t work (I’d like to replace single characters from different fonts); is it supposed to? test file attached. Hraban

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node.setglue broken in LuaMetaTeX
by Max Chernoff 07 Nov '22

07 Nov '22

Hi Hans, Using node.setglue in LuaMetaTeX sets all of the glue components to zero. This example: \startluacode local stretch_order = "stretch_order" local shrink_order = "shrink_order" if status.luatex_engine == "luametatex" then stretch_order = "stretchorder" shrink_order ="shrinkorder" end local glue = node.new "glue" print(node.getglue(glue)) node.setglue(glue, 1, 2, 3, 4, 5) print(node.getglue(glue)) glue.width = 1 glue.stretch = 2 glue.shrink = 3 glue[stretch_order] = 4 glue[shrink_order] = 5 print(node.getglue(glue)) node.setglue(glue, 1, 2, 3, 4, 5) print(node.getglue(glue)) \stopluacode produces this output in MkIV: 0 0 0 0 0 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 but this output in MkXL: 0 0 0 0 0 0 0 0 0 0 1 2 3 4 5 0 0 0 0 0 Thanks, -- Max

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\jobname and \doifelse
by Pablo Rodriguez 06 Nov '22

06 Nov '22

Dear list, using current latest (2022.10.22 11:23), I have the following sample: \starttext \doifelse{\jobname}{a} {yes}{no} \jobname \startluacode if tex.jobname == "a" then context("yes") else context("no") end \stopluacode \stoptext I get "no" as in TeX and "yes" with Lua, being "a.tex" the source file. The TeX conditional used to work before. Am I missing something or have I hit a bug? I’m on Linux64 (if this may be relevant). Many thanks for your help, Pablo

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OpenBSD binaries
by damien＠thiriet.web4me.fr 04 Nov '22

04 Nov '22

Hi, I have two question regarding OBSD binaries: 1) the building farm holds two binaries: current -stable version (or -release?) and the previous version. Since upgrading OBSD with sysupgrade is very easy, but AFAIU works only to upgrade from version (n-1) to n where n is current relase number, I wonder if it wouldn't easier to maintain binaries only for the current version: keeping the OS up to date is strongly recommended. https://www.openbsd.org/faq/faq5.html#Flavors This might ease OBSD binaries management. What do other OBSD users think about it? 2) AFAIU, sources are now available for downloading. I understand it would be possible to make a package build for my system, so that I can upgrade OBSD without having to wait for the next binaries upload. * binaries are quite small, so they should compile quite quickly. Am I right? * I believe Mojca has already a compiling script. Where can I find it? * which adress should I point to fetch the sources for compilation? Best regards, Damien Thiriet

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font features
by Thomas A. Schmitz 03 Nov '22

03 Nov '22

Hi, is there an easy way to get a list of all features that a font has and typeset a sample text to see the result of every single feature? There probably is, but I couldn't find anything... All best Thomas

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Bug in math alignment
by Otared Kavian 03 Nov '22

03 Nov '22

Hi Hans and Mikael, I think there is an issue with the size of math fonts in \frac when used in math alignments, as it is is shown in the following example. %% begin bug-mathalignment.tex \definemathmatrix[alignedcases] [align={1:right,2:left,3:left}, distance=3pt, left={\left\{}, right={\right.}, style=\displaystyle] \starttext Consider this \placeformula \startformula \startalignedcases \NC - \Delta u \NC = 0 \NC \qquad\text{in }\, \Omega \NR \NC \frac{\partial u}{\partial {\bi n}} \NC = V u + \phi \NC \qquad\text{on }\, \partial\Omega. \NR \stopalignedcases \stopformula or this (with\type{\displaystyle} added) \placeformula \startformula \startalignedcases \NC - \Delta u \NC = 0 \NC \qquad\text{in }\, \Omega \NR \NC \displaystyle\frac{\partial u}{\partial {\bi n}} \NC = V u + \phi \NC \qquad\text{on }\, \partial\Omega. \NR \stopalignedcases \stopformula Actually, one should have this \startformula \frac{\partial u}{\partial {\bi n}} = V u + \phi \qquad\text{on }\, \partial\Omega. \stopformula If one adds \type{\displaystyle} both to the numerator and denominator of \type{\frac}, the result is correct: \placeformula \startformula \startalignedcases \NC - \Delta u \NC = 0 \NC \qquad\text{in }\, \Omega \NR \NC \frac{\displaystyle\partial u}{\displaystyle\partial {\bi n}} \NC = V u + \phi \NC \qquad\text{on }\, \partial\Omega. \NR \stopalignedcases \stopformula \stoptext %% end bug-mathalignment.tex

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context --autopdf and --showdirectives
by Henning Hraban Ramm 02 Nov '22

02 Nov '22

I’d like to configure the default behaviour of "context --autopdf"; since on my Mac I must always write "--autopdf=auto", otherwise context tries to call wine "sumatrapdf.exe" -reuse-instance -bg-color 0xCCCCCC instead of e.g. "open". There’s a hint about "directives_pdfview_method", so I wanted to find out more about directives: "context --showdirectives" looks promising; it tells me "result saved in file: .../texmf-context/tex/context/base/mkiv/mtx-context-setters.pdf", but that file isn’t there; it is actually in the current directory, but broken. * How can I configure the command for --autopdf ? (Something in texmfcnf.lua?) * Can we add additional options ("pdfview methods: auto default okular pdfxcview sumatra"), e.g. open (should be default on Mac), xdg-open (could be default on Linux)... * What’s wrong with --showdirectives? Hraban

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