- ntg-context - NTG Mailing Lists

issue with doublesided layer
by Pablo Rodriguez 19 Jan '21

19 Jan '21

Dear list, I have the following sample: \definelayer[layer] [doublesided=yes] \setlayer[layer] {layer} \setupbackgrounds[text] [background={layer}] \starttext \null \stoptext Simply defining a doublesided layer breaks compilation in LMTX. It works fine with MkIV. I’m using current latest from 2021.01.18 18:19. Am I missing something or is this something that needs a fix in LMTX? Many thanks for your help, Pablo -- http://www.ousia.tk

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running head for TOC
by jbf 19 Jan '21

19 Jan '21

I have a very long Table of Contents (runs across five pages) and the author would like the running head on recto pages for this to be 'Table of Contents'. I am using the following to create the TOC head: \definehead [tochead] [title] \starttochead[title={Table of Contents}] \setupheader[state=start] \placecombinedlist[content] \stoptochead And I use the following to set up the headertexts for the book as a whole: \setupheadertexts [{\hfill\getmarking[chapter]\hfill}][] %recto pages [{\hfill\documentvariable{metadata:title}\hfill}][] %verso pages The problem is that I am unable to get 'Table of Contents' as a running head for the two recto pages where I need it. I realise I need to get 'tochead' recognised somehow for this. If I set up a separate \setupheadertexts [{\hfill\getmarking[tochead]\hfill}][] then I end up with 'Table of Contents as the running head on all recto pages, which I don't want. Can anyone suggest how can I get 'Table of Contents' as the running head just for the two recto pages of a five page TOC? Julian

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demo-symbols not working with LMTX
by Jairo A. del Rio 19 Jan '21

19 Jan '21

Hi, list. I was looking for information about fonts in ConTeXt defined using MetaPost and I found demo-symbols.tex for an Unicode (?) character. However, it doesn't work. While LMTX just doesn't print the symbol, MkIV complains from the Lua side. Has something changed? Jairo

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3 questions about xtables after reading manuals
by Andres Conrado Montoya 18 Jan '21

18 Jan '21

I've been trying out xtables and reading the manual, some things I can't find how to do (or if it's possible on xtables): 1. How to align whole columns. It seems I have to add [align=middle] to each cell I want to have centered in a raggedright aligned table. In tabulate you can use [|l|c|] to do this, is it possible in xtables? Seems weird if it's not. Or did I miss something? 2. I know how to use [option=stretch] to fill the textwidth, but can I make specific columns "tight", so they don't get stretched beyond their content? 3. When I use [option=tight] sometimes columns are narrowed so much as to break a line of 4 or 5 words. MWE: %%%%%%%%%%%%%%%%% \startplacetable[location=none] %\startxtable[align={middle,lohi},option=tight] % This makes the first column too narrow. Lines are not that long \startxtable[align={middle,lohi}] \startxtablehead[head] \startxrow \startxcell[align=right] \strong{Concepto}\crlf\small{Cifras en miles de pesos} \stopxcell \startxcell \strong{Dato} \stopxcell \stopxrow \stopxtablehead \startxtablebody[body] \startxrow \startxcell[align=right] Bono \stopxcell \startxcell Ordinario \stopxcell \stopxrow \startxrow \startxcell[align=right] Valor nominal \stopxcell \startxcell \$100\,000 \stopxcell \stopxrow \startxrow \startxcell[align=right] Tasa cupón - periodicidad anual \stopxcell \startxcell 12,50\,\letterpercent{} \stopxcell \stopxrow \startxrow \startxcell[align=right] Cupón \stopxcell \startxcell \$12\,500 \stopxcell \stopxrow \startxrow \startxcell[align=right] Vencimiento en años \stopxcell \startxcell 5 \stopxcell \stopxrow \startxrow \startxcell[align=right] Tasa de negociación (tasa de mercado) \stopxcell \startxcell 12,50\,\letterpercent{} \stopxcell \stopxrow \startxrow \startxcell[align=right] Precio de venta \stopxcell \startxcell \$100\,000 \stopxcell \stopxrow \startxrow \startxcell[align=right] Costos de transacción/ precio de venta \stopxcell \startxcell 0 \stopxcell \stopxrow \startxrow \startxcell[align=right] Fecha de emisión \stopxcell \startxcell 30-mar-X6 \stopxcell \stopxrow \stopxtablebody \stopxtable \stopplacetable %%%%%%%%%%%%%%%%%%%%%%%%%%%% Can I make this table to be "tight" but only so much as to allow "short lines" (i.e: lines that don't make the table go wider than textwidth). I can do it with manual width, but wondering if it's possible. Thank you . -- Andrés Conrado Montoya Andi Kú andresconrado(a)gmail.com http://sesentaycuatro.com http://messier87.com http://chiquitico.org ---------------------------------------- Los fines no justifican los medios, porque la medida verdadera de nuestro carácter está dada por los medios que estamos dispuestos a utilizar, no por los fines que proclamamos. ---------------------------------------- “You develop an instant global consciousness, a people orientation, an intense dissatisfaction with the state of the world, and a compulsion to do something about it. From out there on the moon, international politics look so petty. You want to grab a politician by the scruff of the neck and drag him a quarter of a million miles out and say, ‘Look at that, you son of a bitch.’” — Apollo 14 astronaut Edgar Mitchell

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LMTX isn't typesetting math correctly with Pagella
by Jack Hill 18 Jan '21

18 Jan '21

Hi, I've been having some trouble with ConTeXt not typesetting math correctly when using the Pagella font (I do not know if the same issue occurs with other fonts as I haven't tested them). If I compile with LMTX, the spacing between letters becomes very small so that when I type "|f|", for example, the second "|" intersects the f and looks rather ugly. However, compiling with the --luatex switch fixes these issues and the math looks nice again. Can anybody else replicate this issue, and does anybody know why it is happening? This the code I used to test: |\setupbodyfont[pagella] \starttext \startformula |f| = \sqrt{\int_0^1 |f(t)|^2 \text{d}t} \stopformula \stoptext ||| Jack ||

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"Nicefracs" hidden in math-frc.mkiv
by Andres Conrado Montoya 18 Jan '21

18 Jan '21

Hello, list. I Was checking out math-frc.mkiv to learn stuff, and found out that at the end of that file, from line 673, there is a couple commented out macros to generate "nice fractions'', i.e.: ½ (as in the LaTeX package nicefrac). Why has this code been commented out? These are quite useful. -- Andrés Conrado Montoya Andi Kú andresconrado(a)gmail.com http://sesentaycuatro.com http://messier87.com http://chiquitico.org ---------------------------------------- Los fines no justifican los medios, porque la medida verdadera de nuestro carácter está dada por los medios que estamos dispuestos a utilizar, no por los fines que proclamamos. ---------------------------------------- “You develop an instant global consciousness, a people orientation, an intense dissatisfaction with the state of the world, and a compulsion to do something about it. From out there on the moon, international politics look so petty. You want to grab a politician by the scruff of the neck and drag him a quarter of a million miles out and say, ‘Look at that, you son of a bitch.’” — Apollo 14 astronaut Edgar Mitchell

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Getting dimensions in Lua
by Jairo A. del Rio 18 Jan '21

18 Jan '21

Hi, list. I want to get some dimensions in Lua. See, for instance \starttext \the\dimexpr\availablehsize\relax %say, 426pt \stoptext Is there an equivalent in ConTeXt for Lua, i.e. without passing values from TeX or, at least, using only Lua commands? Thank you in advance. Best wishes, Jairo

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question about vardef variables
by Damien Thiriet 18 Jan '21

18 Jan '21

Hi, I have some troubles with understanding metafun's macro mechanism. Given this MWE: \starttext \startMPpage vardef Test (expr ab,cd)= %numeric ab; %numeric cd; draw unitsquare scaled 10 xshifted ab; draw unitsquare scaled 10 yshifted cd; enddef; Test (50,100); \stopMPpage \stoptext Uncommenting the two declarations makes me run intro a silent error. I was lucky enough yesterday to get an explicit error message with a more complex macro. It made me figure out where my problems came from. So here are my two questions: - Why shouldn't we tell metafun if expr is a path, a pair or so on? - Would it be possible to issue an error message each time this wrong declaration is made? Thanks, Damien Thiriet

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expansion of xml userdata
by Jano Kula 17 Jan '21

17 Jan '21

Hello to everybody! \setuphead[section][expansion=yes] expands xml reference to the actual content in TUC file: \xmlatt {xml:name::4}{title} → First section for titles & bookmarks. The same is not true for userdata (mkiv & mkxl). Do you know how to force expansion of userdata? MWE attached. Thank you, Jano \startbuffer[doc] <?xml version "1.0"?> <document> <section title="First section"> text </section> <section title="Second section"> text </section> </document> \stopbuffer \setuphead[section][expansion=yes] \setuplist[section][alternative=command, command=\SectionListCommand] \define[3]\SectionListCommand{% {\bf#1\par title: #2\par usertitle: \structurelistuservariable{usertitle}}\par \blank \endgraf} \startxmlsetups xml:name \xmlsetsetup{\xmldocument}{document|section}{xml:name:*} \stopxmlsetups \xmlregistersetup{xml:name} \startxmlsetups xml:name:document \xmlflush{#1} \stopxmlsetups \startxmlsetups xml:name:section \startsection[title=\xmlatt{#1}{title}] [usertitle=\xmlatt{#1}{title}] \stopsection \stopxmlsetups \starttext \placelist[section] \xmlprocessbuffer{xml:name}{doc}{} \stoptext

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Re: [NTG-context] question about vardef variables
by Jeong Dal 17 Jan '21

17 Jan '21

Dear Damien Thiriet, If you change ‘vardef’ to ‘def’, you will get the figure. There is a difference between ‘vardef’ and ‘def’. AFAIK, vardef returns the value of the last statement in the macro. Please see the examples in Metafun manual from page 32 ~ . I hope that you find your answer there. I am sorry that I am not good enough to explain the variables. Best regards, Dalyoung > 2021. 1. 17. 오후 8:00, ntg-context-request(a)ntg.nl 작성: > > \starttext > \startMPpage > > vardef Test (expr ab,cd)= > %numeric ab; > %numeric cd; > draw unitsquare scaled 10 xshifted ab; > draw unitsquare scaled 10 yshifted cd; > enddef; > > Test (50,100); > \stopMPpage > \stoptext

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