November 2021 - ntg-context - NTG Mailing Lists

LMTX error processing Adobe Arabic Naskh font
by Idris Samawi Hamid ادريس سماوي ح امد 13 Nov '21

13 Nov '21

Dear Hans and gang, Consider the following MWE: ============== \definefont[ARABICFONT][file:Adobe_Naskh.ttf*arabic at 28pt] % \definefont[ARABICFONT][file:Amiri-Regular_0.ttf*arabic at 28pt] % \definefont[ARABICFONT][file:Scheherazade-Regular.ttf*arabic at 28pt] % \definefont[ARABICFONT][file:UthmanTN1_Ver10.otf*arabic at 28pt] % \definefont[ARABICFONT][file:almfixed.otf*arabic at 28pt] \disabledirectives[filters.utf.reorder] \noheaderandfooterlines \setupwhitespace[big] % \setupinterlinespace[line=4.2ex] \starttext % \startTEXpage[offset=1ex] \setupdirections[bidi=global,method=one] \righttoleft \ARABICFONT خَ‍ % a خَل % \stopTEXpage \stoptext ============== Three bugs: I. If we use start|stoptex and comment start|stopTeXpage, then both lines 19 and 21 give an error: ======= tex error > tex error on line 20 in file ./test.tex: lua error: callback error: [string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2058: attempt to index a number value (local 'chainstep') stack traceback: [string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2058: in upvalue 'chainrun' [string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2941: in function <[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2514> (...tail calls...) [string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2065: in upvalue 'chainrun' [string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2941: in local 'handler' [string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:3999: in field '?' ...eXt/tex/texmf-context/tex/context/base/mkxl/node-fnt.lmt:459: in upvalue 'nodes_handlers_characters' [string "local tonut = nodes.tonut..."]:23: in function <[string "local tonut = nodes.tonut..."]:12> (...tail calls...) 10 \setupwhitespace[big] 11 % \setupinterlinespace[line=4.2ex] 12 13 \starttext 14 % \startTEXpage[offset=1ex] 15 \setupdirections[bidi=global,method=one] 16 \righttoleft 17 \ARABICFONT 18 19 خَ‍ 20 >> 21 خَل 22 23 % \stopTEXpage 24 \stoptext ======= Comment line 19 and yu will get virtually the same error. II. Using start|stopTeXpage, only line 21 gives the error: ======= tex error > tex error on line 22 in file ./test.tex: lua error: callback error: [string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2058: attempt to index a number value (local 'chainstep') stack traceback: [string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2058: in upvalue 'chainrun' [string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2941: in function <[string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2514> (...tail calls...) [string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2065: in upvalue 'chainrun' [string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:2941: in local 'handler' [string "C:/ConTeXt/tex/texmf-context/tex/context/base..."]:3999: in field '?' ...eXt/tex/texmf-context/tex/context/base/mkxl/node-fnt.lmt:459: in upvalue 'nodes_handlers_characters' [string "local tonut = nodes.tonut..."]:23: in function <[string "local tonut = nodes.tonut..."]:12> (...tail calls...) 12 13 % \starttext 14 \startTEXpage[offset=1ex] 15 \setupdirections[bidi=global,method=one] 16 \righttoleft 17 \ARABICFONT 18 19 خَ‍ % a 20 21 خَل 22 >> 23 \stopTEXpage 24 % \stoptext ======= III Let us switch to almfixed: If you comment line 21 and use only line 19, then there is no tex error, but the result is rendered incorrectly - see test-broken.pdf. For the correct result, see test-correct.pdf (add a space and any letter - uncomment the end of line 19). Adobe Naskh is not publicly available. The four commented fonts are publicly available and generate no tex errors. Best wishes Idris -- Idris Samawi Hamid, Professor Department of Philosophy Colorado State University Fort Collins, CO 80512

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issue importing metadata from PDF
by Pablo Rodriguez 12 Nov '21

12 Nov '21

Hans, I have a PDF document (which I didn’t generate) and it contains the following objects: 1 0 obj << /Title 272 0 R /Producer 273 0 R /Creator 274 0 R /CreationDate 275 0 R /ModDate 275 0 R >> endobj 272 0 obj (This is an important title) endobj 273 0 obj (Mac OS X 10.12.1 Quartz PDFContext) endobj 274 0 obj (Keynote) endobj 275 0 obj (D:20161108071428Z00'00') endobj I cannot import these objects, since they are tables instead of strings, after checking that with: \startluacode function document.transfer_metadata(name) local main_doc = lpdf.epdf.load(name) context(type(main_doc.Info.ModDate)) context(type(main_doc.Info.Title)) end \stopluacode Would it be possible that LMTX can deal with these objects and import them as strings? Many thanks for your help, Pablo

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Problem with Google Font 'Vollkorn'
by Michael Urban 12 Nov '21

12 Nov '21

I downloaded the Google free font ‘Vollkorn’ (https://fonts.google.com/specimen/Vollkorn) into an appropriate directory and ran mtxrun --script font --reload all went well, and the Vollkorn truetype fonts show up in the output of mtxrun --script font --list --all . However, the following input: \starttext \definedfont[name:vollkornregular*default at 14pt] \input tufte \stoptext fails, with the following output: system > ConTeXt ver: 2020.03.10 14:44 MKIV beta fmt: 2020.6.8 int: english/english fonts > otf loading > loading 'MYPATH/texmf/fonts/truetype/google/Vollkorn-Regular.ttf', hash 'vollkorn-regular' fonts > otf loading > loading failed due to read error fonts > defining > forced type 'ttf' of 'Vollkorn-Regular' not found fonts > defining > font with asked name 'Vollkorn-Regular' is not found using lookup 'name' fonts > defining > unknown font 'Vollkorn-Regular', loading aborted This is on Mac OSX. I don't recall this problem coming up before. Evidently the difficulty is that it is expecting an otf font and is confounded by the truetype file. The ConTeXt font system always bewilders me, but this time it's pretty specific. Help?

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rule beneath chapter number
by jbf 12 Nov '21

12 Nov '21

The following MWE deliberately shows two ways of getting a short rule beneath a chapter number, but neither achieve what I want. \underbar is too close to the number and \crlf\blackrule too far below. So basically my question is: is there a way of adjusting the position of a brief rule beneath the number? It probably involves neither of the approaches I have used here, but I am not sure just what approach to take, other than using a background layer... and maybe that is what I need to do. Julian \define[2]\MyChapterCommand% {\framed[frame=on,bottomframe=off,leftframe=off,rightframe=off,topframe=off,align=middle] {\vbox{\headtext{chapter} \underbar{#1}\crlf\blackrule[height=.1\exheight]\crlf#2}}} \setuphead[chapter][ header=empty, alternative=middle, style={\ssb}, number=yes, command=\MyChapterCommand, after={\blank[big]}, ] \setuplabeltext[chapter= ] \starttext \chapter[title={Chapter title}] \stoptext

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spreadsheet product of two cells in current row
by juh 12 Nov '21

12 Nov '21

Dear all, I thought I could find my way through the spreadsheet documentation to make my invoices. While it is simple to calculate the sum or the product of two cells if you know that they are A[2] and B[2] I can't find the solution to access cell A and B *on the same row*. Amount | Single | Sum 2 | 5 | 10 <-- A[currentrow] * B[currentrow] does not work 3 | 4 | 12 ==================== Sum 22 The rows come from a script and there might be several items. Any hints? juh -- Autoren-Homepage: ......... http://literatur.hasecke.com Satiren & Essays: ......... http://www.sudelbuch.de Privater Blog: ............ http://www.hasecke.eu Netzliteratur-Projekt: .... http://www.generationenprojekt.de

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Synonyms feature request
by Rik Kabel 12 Nov '21

12 Nov '21

Hello developers, Is it possible to get a mechanism to reset and setup synonyms by way (page, part, chapter, section, ...)? This is not a high-priority request. I currently accomplish this in the after key of chapter setuphead definitions. However, it seems cleaner to define it when the synonym list is defined instead of adding a resetshownsynonyms and setsynonyms to the chapter definition for every new synonym list. -- Rik

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Achieving the effect of \overset outside math mode
by kauśika 12 Nov '21

12 Nov '21

Dear list, I don't have a MWE per se, but as the title suggests, I want to be able to achieve the effect of \overset outside math mode. As I understand, \overset itself is implemented using \mathop and \limits. Currently to achieve this I have defined some macros using \offset thus : \define[1]\pabv{\dontleavehmode\offset[width=0em,y=-16pt,x=3pt]{#1}} Unfortunately, I have to hard code the x values. So I have define several such macros with different offsets. Not an elegant solution, but it is what I could muster. So, my objective is to place a smaller piece of text above another larger piece of text so that the text above is centered w.r.t the text below. Please advise. Thanks, kauśika

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Math font tips and tricks
by Alexandre Christe 11 Nov '21

11 Nov '21

Dear all, I'd like to know how best to work with font features regarding adaptations of math fonts. For example, let's assume I'd like to use Minion Pro also for math typesetting. I've referred myself to this page of the Wiki https://wiki.contextgarden.net/Command/definefontfallback. I have tried the following, but it fails for greek letters in math mode. \definefallbackfamily [mainface] [math] [Minion Pro] [range={math:lowercaseitalic,math:uppercaseitalic,math:lowercasenormal,math:uppercasenormal},force=yes] \definefallbackfamily [mainface] [math] [Minion Pro] [range={math:lowercasegreekitalic,math:uppercasegreekitalic,math:lowercasegreeknormal,math:uppercasegreeknormal},force=yes] \definefallbackfamily [mainface] [math] [Minion Pro] [range=math:digitsnormal,features=f:lining,force=yes] \definefontfamily [mainface] [math] [Libertinus Math] Thanks in advance for your support.

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adding module to ConTeXt basic installation
by A A 11 Nov '21

11 Nov '21

Dear All, I installed ConTeXt on my windows machine using the instructions provided here: - https://wiki.contextgarden.net/Installation I would like to now render some python code in my pdf. For this I need to install this module: https://github.com/adityam/filter How do I add this module to my current installation? Thanks for your consideration. Regards, Amine

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Re: [NTG-context] Font Problem
by skyhorse＠gmx.us 10 Nov '21

10 Nov '21

I'm using the linux version which is about a week to two weeks old. I've installed in in: /opt/context-lmtx Which now contains the directories: $ ls /opt/context-lmtx --> bin context-linux-64.zip installation.pdf install.sh tex Does this help in getting closer to solving the font problem for ubuntu that I'm using with the stand alone? -------- Wolfgang Schuster <wolfgang.schuster.lists(a)gmail.com> wrote: > skyhorse--- via ntg-context schrieb am 07.11.2021 um 22:06: > > I am a beginner and not well versed on font processing needs yet. > > > > I tried the following simple example, but get an error. > > I am using the standalone context: "txrun | ConTeXt TDS Runner Tool 1.32" > > Which one, there is one available from the ConTeXt wiki [1] and > another one from the Pragma website [2]. > > [1] https://wiki.contextgarden.net/Installation > [2] https://www.pragma-ade.nl/install.htm > > It helps also to tell us which system you're using (Windows, Linux etc.). > > Wolfgang >

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