ntg-context September 2020

ntg-context@ntg.nl

49 participants
104 discussions

new upload
by Hans Hagen 01 Sep '20

01 Sep '20

Hi, In order to keep the 'context is good for toy math' reputation up to date, in lmtx we can now have proper discretionaries in math and math in discretionaries. The kind of things no one asks for but they might be useful in educational settings. Here are some examples (): \starttext \showframe \enabletrackers[math.toysymbol] \definemathtoysymbol[Plus] [bin][+] \definemathtoysymbol[Minus][bin][-] \definemathtoysymbol[Equal][rel][=] $\dorecurse{199} { x_{#1} \ifodd#1\relax\Plus\else\Minus\fi } x_{200} \Equal n$ \blank \dorecurse{10} { test \discretionary {\darkred hel $\sqrt{y}$ lo} {\darkgreen good $\sqrt{z}$ bye} {\darkblue wel $\sqrt{x}$ come} test } \blank \dorecurse{10} {test me #1 $x + 2x \discretionary class 2 {$+ \, \cdots $} {$ \cdots \, +$} {$+ \, \cdots \, +$} nx$ test } \stoptext You might be able to guess from this code what is supposed to happen. I'll play a bit more with this later (assuming that it's somehow useful). We could predefine a bunch. As usual there might be issues but I'll sort them out when we run into them (it's a non critical feature with not much impact). Hans (who must not forget to document it somewhere) ----------------------------------------------------------------- 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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own answer to part of the question re typeface options
by jbf 01 Sep '20

01 Sep '20

I have come up with part answers to my two questions. The remaining unanswered question is in the final line. The question I can now answer, after some experimenting, is how to ensure that I can use small caps as part of the Alegreya family when I need to do so. This is how my definitions now look (the solutions are highlighted): \definefontfamily [mainface] [rm] [alegreya] *[sc=file:alegreyasc-bold]* \definefontfamily [mainface] [ss] [dax][tf=file:dax-regular] \definefontfamily [mainface] [mm] [alegreya] \setupbodyfont[mainface] This now enables me to do: {\sc text in small caps} and the rest of the paragraph as normal (alegreya-regular)... I also now know, using the same type of solution above, that I can use two different weights of Dax, as follows: \definefontfamily [mainface] [ss] [dax][tf=file:dax-regular,*bf=file:dax-medium*] which enables me to do as follows: {\ss\bf My subheading} and it will be in Dax-medium font. But I also want to be able to use a second sans serif font, namely ITCAvantGardePro-Md. Can I have two 'mainface' definitions for [ss]? Or how would I achieve this? Julian

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Verbatim typing and compound breakpoints
by Christoph Reller 01 Sep '20

01 Sep '20

Dear List, I am using ConTeXt LMTX 2020.08.28 13:58 with the following M(N)WE: \definetype[typeLUA][option=LUA] \setbreakpoints[compound] \starttext \typeLUA{function(argument)} \stoptext Sadly, it does not compile. The problem seems to be the simultaneous use of compound breakpoints and parenthesis. The error message is: callback error: ...est/tex/texmf-context/tex/context/base/mkiv/lang-ini.lua:509: bad argument #1 to 'prehyphenchar' (luatex.lang expected, got no value) stack traceback: [C]: in function 'lang.prehyphenchar' ...est/tex/texmf-context/tex/context/base/mkiv/lang-ini.lua:509: in field 'prehyphenchar' ...est/tex/texmf-context/tex/context/base/mkiv/typo-brk.lua:171: in local 'method' ...est/tex/texmf-context/tex/context/base/mkiv/typo-brk.lua:392: in upvalue 'typesetters_breakpoints_handler' [string "local tonut = nodes.tonut..."]:16: in function <[string "local tonut = nodes.tonut..."]:11> (...tail calls...) ...est/tex/texmf-context/tex/context/base/mkiv/node-pro.lua:88: in function <...est/tex/texmf-context/tex/context/base/mkiv/node-pro.lua:79> How can I prevent this? Is this a bug? Cheers, Christoph

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a little more specific on switching fonts
by jbf 01 Sep '20

01 Sep '20

Earlier my question was 'what if I want to add an extra sans serif typeface?' (you can see below that I already have one ss - dax, but I need to add ITCAvantGarde as well as part of mainface or in some other way??). *I would like to add to that question, since it is closely connected.* This time, realizing I needed to also use small caps, and because AlegreyaSC of various weights is available in my system, you can see how I thought I would need to add it into the definitions below - in the second line. Then in the body of the document where I needed small caps, I did as follows: {\sc The text I need in small caps} and the rest of the paragraph follows... But the result is that the entire document is now in small caps. Clearly I am doing something wrong. \definefontfamily [mainface] [rm] [alegreya] \definefontfamily [mainface] [sc] [alegreyasc][[tf=file:alegreyasc-regular]] \definefontfamily [mainface] [ss] [dax][tf=file:dax-regular] \definefontfamily [mainface] [mm] [alegreya] \setupbodyfont[mainface] Anyone able to help me with this please? Julian

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ntg-context September 2020