- ntg-context - NTG Mailing Lists

Opentype features and space after comma in math mode
by Jose Luis Arellano 03 Jun '17

03 Jun '17

Hello list, Two questions: 1) How can i enable opentype features (onum, lnum, tnum) in math mode? 2) How can i avoid the space after comma in math mode? I tried this without success: \definefontfeature[default][default][onum=yes,lnum=no,tnum=no] \definefontfeature[lnum][default][onum=yes,lnum=no,tnum=no,mode=base] \definefontfamily[mainface][serif][TeX Gyre Pagella] \definefontfamily[mainface][math][TeX Gyre Pagella Math][features=lnum] \setupbodyfont[mainface] \starttext 1,123\par \m{1,123}\par \stoptext Thanks in advance...

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Upright font in math.
by Jose Luis Arellano 02 Jun '17

02 Jun '17

Dear list. What is the correct way to use upright (no italic) font in math mode? Thanks in advance.

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Change kerning between math characters (prime and left parenthesis)
by Mikael P. Sundqvist 02 Jun '17

02 Jun '17

Hi! Now that the bug with primes is fixed in ConTeXt, I wonder if there is a way to change the kerning between certain characters in mathematics (in case one is not happy with the output from the font)? After reading in fonts-mkiv.pdf this is what I came up with: \startluacode fonts.handlers.otf.addfeature { name = "kerntest", type = "kern", data = { [0x61] = { [0x62] = -150 }, -- a and b in text [0x1d44e] = { [0x1d44f] = -150 }, -- mathematical italic small a and b [0x02032] = { [0x00028] = -150 }, -- prime and left parenthesis } } \stopluacode \definefontfeature[kerntest][kerntest=yes] \definefontfamily[lucidaopentype][rm][Lucida Bright OT] \definefontfamily[lucidaopentype][mm][Lucida Bright Math OT] \setupbodyfont[lucidaopentype,10pt] \startTEXpage[offset=3pt] abba $abba f'(x)$ \addff{kerntest} abba $abba f'(x)$ I prefer $f'\mkern-3mu(x)$ \stopTEXpage The output is attached as a png file. As you see the kerning works as expected in text mode, but not at all in math mode, even not for the a and b (which I hope I entered correctly). Something like the third line is what I'm after, but not having to use \mkern in all places. Is it possible? /Mikael PS: This is a cross post of the question https://tex.stackexchange.com/q/372857/52406, where I got the suggestion to ask on the list.

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Math mode: Vertical space between cases.
by Jose Luis Arellano 01 Jun '17

01 Jun '17

Dear list. How can I increase vertical space between cases? \startformula f(x)= \startmathcases[style=\displaystyle] \NC \frac{3}{10}\;, \NC if \math{x=2} \NR \NC \frac{k+9}{6}\;, \NC if \math{x=3} \NR \NC \frac{h}{16}\;, \NC if \math{x=4} \NR \stopmathcases \stopformula

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a special kind of notes in each page
by Pablo Rodriguez 01 Jun '17

01 Jun '17

Hans, I have a document http://tex.ousia.tk/hippocratic-oath.pdf (source as attachment to the PDF document itself). The special kind of notes are the first group in two columns. I need that their space and location in page are calculated by the notes mechanism. And also that the notes mechanism selects the range of notes that belong to the page. I don’t need any reference, not to note number or to line number. Since it is a vocabulary list, what I need is a minimal register with "indicator=no, before=, after=". So it would be possible to have well-balanced columns and words alphabetically sorted, which is essential in a vocabulary. I guess that \definenote[NAME][alternative=register] and \setupregister[NAME][indicator=no, before=, after=] could be a good way to invoke these page-related vocabularies. Would it be possible to have such a feature? This would the way to have page vocabularies. Many thanks for your help, Pablo -- http://www.ousia.tk

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slashes in paths (Lua code)
by Akira Kakuto 01 Jun '17

01 Jun '17

> Directories are a problem here. I mean, > \shatwo{Desktop/i-context.pdf} > cannot work in Windows. Here both of your example and an example by Hans worked fine on Windows. Note that \shatwo{Desktop/i-context.pdf} works only if the current directory is your %USERPROFILE%. Best, Akira

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slashes in paths (Lua code)
by Pablo Rodriguez 01 Jun '17

01 Jun '17

Dear list, I need to add checksums to files I attach to PDF documents. Following the suggestion from https://stackoverflow.com/a/326715, I wrote: \starttext \startluacode function document.capture(cmd, raw) local f = assert(io.popen(cmd, 'r')) local s = assert(f:read('*a')) f:close() if raw then return s end s = string.gsub(s, '^%s+', '') s = string.gsub(s, '%s+$', '') s = string.gsub(s, '[\n\r]+', ' ') return s end function document.sha256(file) command_output= document.capture("sha256sum -b " .. file) context(command_output:sub(0,64)) end function document.sha512(file) command_output= document.capture("sha512sum -b " .. file) context(command_output:sub(0,128)) end \stopluacode \def\shatwo#1% {\ctxlua{document.sha256("#1")}} \def\shafive#1% {\ctxlua{document.sha512("#1")}} \shatwo{Desktop/i-context.pdf} \shafive{i-context.pdf} \stoptext Directories are a problem here. I mean, \shatwo{Desktop/i-context.pdf} cannot work in Windows. Which would be the way to make it work in Windows? Many thanks for your help, Pablo -- http://www.ousia.tk

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ConTeXt Meeting 2017
by Taco Hoekwater 01 Jun '17

01 Jun '17

Hello everybody! == Announcement == The ConTeXt Group and Pragma ADE are looking forward to welcoming you at the 11th International ConTeXt Meeting that will take place on September 11–17, 2017 in Maibach, Germany. The meeting will host ConTeXt and LuaTeX developers and users and gives you the opportunity to present your results, experiences and ideas on future development. The presentations will be accompanied by tutorials on different ConTeXt and LuaTeX techniques. Registration is now open. Direct link to the registration form: http://meeting.contextgarden.net/2017/register.shtml This year’s meeting is sponsored by DANTE e.V., the German TeX User Group. Besides the general sponsorship, they also offer an extra discount for any Dante members that will attend our meeting. And that is on top of the discount we offer to our ConTeXt Group members, so we managed to keep the conference fees quite low. == Call for submissions == We always set a theme for the meeting, and the theme for this meeting is: ConTeXt Gardening If you want to do an on-topic talk submission, there are plenty angles to take at the theme: Seeding, weeding, fertilising, growing, harvesting, just to name a few. But anything at all related to ConTeXt that you would like to share is an acceptable subject for a presentation, tutorial, discussion, Q&A session, demonstration, workshop, recital, sketch, or sermon. The programme committee is Hans Hagen and Taco Hoekwater, feel free to email them with hints and ideas. == website == For the meeting: http://meeting.contextgarden.net For the Context Group: http://group.contextgarden.net

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mathmatrix and grid: followup
by Henri Menke 01 Jun '17

01 Jun '17

Dear list, some time ago I asked about the interplay of mathmatix with grid typesetting: https://mailman.ntg.nl/pipermail/ntg-context/2016/087018.html I noticed that when the grid is enabled, the height of a mathmatrix is rounded down which leaves less space above than below. In my opinion either the height should be rounded up or the depth rounded down here. In the original thread Wolfgang proposed using \setupformula[grid=tolerant] and adding a blank line before the formula (otherwise grid=tolerant is applied to the paragraph before). This workaround leads to the depth being rounded down in the example below which produces a more balanced output. Could this somehow be made the default behaviour or something? Currently it requires the user to notice that vertical spacing is off and correct it manually, including adding a blank line before the formula to prevent grid=tolerant being applied to the paragraph. Cheers, Henri --- \setuplayout[grid=yes] \showgrid \starttext \input knuth \startformula \vrule % make lineheight and depth visible \startmathmatrix \NC A \NR \NC B \NR \NC C \NR \stopmathmatrix \stopformula \input tufte \stoptext

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Modes in Lua
by Henning Hraban Ramm 01 Jun '17

01 Jun '17

Hi, this should be easy: How can I access ConTeXt’s modes in Lua? Is it any different with language modes (*en)? e.g. \startluacode if context.modes['specialmode'] then context('I’m special.') end \stopluacode Greetlings, Hraban --- http://www.fiee.net http://wiki.contextgarden.net GPG Key ID 1C9B22FD

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