August 2018 - ntg-context - NTG Mailing Lists

fontloader fails with "bad argument #1 to 'for iterator"
by Ulrike Fischer 18 Aug '18

18 Aug '18

On the luaotfload tracker was a bug report that the loading of a font failed if too many character variant were requested https://github.com/lualatex/luaotfload/issues/424 I wanted to check if the problem still exist with a current fontloader. Here (both context and latex) the loading of this fonts fails even if no character variants at all are requested: \starttext \font\x={file:iosevka-type-slab-regular.ttf} \x ablub \stoptext gives ...ext/tex/texmf-context/tex/context/base/mkiv/font-oup.lua:2137: bad argument #1 to 'for iterator' (table expected, got nil) The font can be get from https://github.com/be5invis/Iosevka/releases it is in the 07-iosevka-type-slab-2.0.0.zip. -- Ulrike Fischer https://www.troubleshooting-tex.de/

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The dimensions of the first page are not taken into account
by Fabrice Couvreur 17 Aug '18

17 Aug '18

Hello, I want to create a template with a header on the first page for student testing. If the document contains text that is on more than one page, it works perfectly. On the other hand, if the document has text on one page, it does not work. Thanks. Fabrice \setuppagenumbering[alternative=,location=] \showframe \definelayout [firstpage] [topspace=10mm, header=10mm, footer=10mm, height=middle, backspace=20mm, width=middle] \definelayout [first] [firstpage] \setuplayout [topspace=10mm, header=\zeropoint, footer=10mm, height=middle, backspace=20mm, width=middle] \setupbackgrounds [header] [text] [frame=off, topframe=on, bottomframe=on, framecolor=red, rulethickness=1pt] \setupheadertexts [First page] \starttext \dorecurse{8}{\input knuth} % ok % \dorecurse{8}{\input knuth} no ok \stoptext

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How can I remove a blank leading line from a buffer
by Rik Kabel 16 Aug '18

16 Aug '18

%% How can one remove blank lines at the start of a buffer so that %% commands that grab a buffer can be used in the same way as, for %% example, \startparagraph...\stopparagraph, which allow blank %% lines around the content? %% %% The problem appears when an optional argument is allowed but none %% is provided. Adding \relax does not help; adding empty brackets %% does. I see no way to distinguish between a buffer without %% leading blank lines and a buffer that was created when brackets %% are provided. %% %% \inlinebuffer handles the leading blank lines when there is %% nothing prepended, but I need to prepend. (It also handles the %% unwanted trailing line, but that is not an issue here). %% %% How can I unpack the buffer, apply the equivalent functions of %% ignorespaspaces and removeunwantedspaces to it, and repack it? %% The buffer may contain internal blank lines and macros, and %% those should be retained. Or, is there already a function to %% strip a buffer in the manner that string.strip does a string? \setupwhitespace[none] \setupindenting[none] \define\Mark{\color[middlegray]{\itb¿\ }} \define\First{nothing yet} \define\Arg{nothing yet} \setuplanguage[en][spacing=packed] \starttexdefinition unexpanded startBufTest \bgroup \dosingleempty\dostartBufTest \stoptexdefinition \starttexdefinition dostartBufTest [#SETUPS] \doifsomethingelse{#{SETUPS}} {\define\Arg{yes}} {\define\Arg{no}} \iffirstargument \define\First{yes} \else \define\First{no} \fi \relax \getrawparameters[BufTest][xx=yy,#SETUPS] \grabbufferdata[TestBuffer][startBufTest][stopBufTest] \stoptexdefinition \starttexdefinition stopBufTest \startparagraph \dontleavehmode\llap{\Mark}\inlinebuffer[TestBuffer] \ (first: \First, arg: \Arg) \stopparagraph \egroup \stoptexdefinition \starttext \startparagraph A starting paragraph. \stopparagraph \startBufTest Buffer without blank lines. \stopBufTest \startparagraph An intervening paragraph. \stopparagraph \startBufTest Buffer with blank lines. \stopBufTest \startparagraph An intervening paragraph. \stopparagraph \startBufTest\relax Buffer with \tex{relax}. \stopBufTest \startparagraph An intervening paragraph. \stopparagraph \startBufTest[] Buffer with \type{[]}. \stopBufTest \startparagraph An intervening paragraph. \stopparagraph \startBufTest[key=value] Buffer with \type{[key=value]}. \stopBufTest \startparagraph A closing paragraph. \stopparagraph \stoptext \stopmode %% -- %% Rik Kabel

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Logo in the margin at the bottom of the page
by Fabrice Couvreur 16 Aug '18

16 Aug '18

Hello, I wish to place a small logo at the bottom of the page. It works almost but it is not very well adjusted. How to cure it ? Thank you. fabrice \showframe \useMPlibrary[dum] \setuplayout [height=middle, width=middle, backspace=2cm, topspace=10mm, bottomspace=10mm, header=10mm, footer=10mm, footerdistance=10mm, headerdistance=10mm] \setupfootertexts [margin] [] [{\externalfigure[dummy][width=\marginwidth,height=\footerheight]}] [] [{\externalfigure[dummy][width=\marginwidth,height=\footerheight]}] \starttext \dorecurse{10}{\page[dummy]} \stoptext

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The dimensions of the first page are not taken into account Hello, I want to create a template with a header on the first page for student testing. If the document contains text that is on more than one page, it works perfectly. On the other hand, if the document has text on one page, it does not work.
by Fabrice Couvreur 16 Aug '18

16 Aug '18

Hello, I want to create a template with a header on the first page for student testing. If the document contains text that is on more than one page, it works perfectly. On the other hand, if the document has text on one page, it does not work. Thanks. Fabrice \setuppagenumbering[alternative=,location=] \showframe \definelayout [firstpage] [topspace=10mm, header=10mm, footer=10mm, height=middle, backspace=20mm, width=middle] \definelayout [first] [firstpage] \setuplayout [topspace=10mm, header=\zeropoint, footer=10mm, height=middle, backspace=20mm, width=middle] \setupbackgrounds [header] [text] [frame=off, topframe=on, bottomframe=on, framecolor=red, rulethickness=1pt] \setupheadertexts [First page] \starttext \dorecurse{8}{\input knuth} % ok % \dorecurse{8}{\input knuth} no ok \stoptext

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referencing is broken in version: 2018.08.15 18:45
by Rik Kabel 15 Aug '18

15 Aug '18

With this example code from the wiki (slightly modified for use here): \setuppapersize[A5] \starttext \placeformula[eq:pythagoras] \startformula a^2+b^2=c^2 \stopformula This is explained in \in{Equation}{.}[eq:pythagoras] \stoptext The following output is obtained: A good excuse to stop for the night, thank you. -- Rik

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embedded sounds aren’t played
by Pablo Rodriguez 15 Aug '18

15 Aug '18

Dear list, this is sounds-001.tex from the examples: \definerenderingwindow [example] [width=0pt,height=0pt,frame=off] \setupinteraction[state=start] \useexternalrendering [mysound] [audio/mpeg] % audio/x-mp3 [akkerman.mp3] [embed] \definereference [StartSoundTrack] [StartRendering{mysound}] \definereference [StopSoundTrack] [StopRendering{mysound}] \definelayer[resources][width=\paperwidth,height=\paperheight] \setupbackgrounds[page][background=resources] \starttext \setlayer[resources]{\placerenderingwindow[example][mysound]} \startTEXpage \button{start}[StartSoundTrack] \button{stop}[StopSoundTrack] \stopTEXpage \startTEXpage \button{start}[StartSoundTrack] \button{stop}[StopSoundTrack] \stopTEXpage \stoptext I added the option to embed the file. I’m attaching the result. As I cannot check it myself with Acrobat for Linux (it seems to lack a player for MP3 files), I asked at the Spanish TeX mailing list whether they can play the MP3 file embedded in the PDF file. A MacOS X user (with Acrobat 9.5) told me that the program reports that the file "akkerman.mp3" is missing. Although the file is indeed embedded, the /Filespec points to the external file. Decompressing the PDF file, I see that there are two similar objects: 8 0 obj << /EF << /F 7 0 R >> /F (akkerman.mp3) /Type /Filespec /UF (\376\377\000a\000k\000k\000e\000r\000m\000a\000n\000.\000m\000p\0003) >> endobj 10 0 obj << /EF 8 0 R /F (akkerman.mp3) /Type /Filespec >> endobj This object contains a strange dictionary (an indirect reference to the same object it contains it?): 13 0 obj << /Type /Annot /A << /AN 13 0 R /OP 0 /R 12 0 R /S /Rendition >> /Border [ 0 0 0 ] /P 14 0 R /Subtype /Screen /Rect [ 0 14.416 0 14.416 ] >> endobj I mean, the object already exists: 15 0 obj << /AN 13 0 R /OP 0 /R 12 0 R /S /Rendition >> endobj Could anyone tell me what I’m doing wrong so that the embedded file isn’t played? Many thanks for your help, Pablo -- http://www.ousia.tk

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latest beta (2018.110.14)
by Alan Bowen 15 Aug '18

15 Aug '18

When I run the latest standalone beta, the following \starttext Hello, world! \stoptext fails with the error message: lua error > lua error on line 5 in file /Users/bowen1/Desktop/TestTeX/test-01.tex: ...eXt/tex/texmf-context/tex/context/base/mkiv/cldf-ini.lua:1120: no string to print stack traceback: [C]: in function 'tex.sprint' ...eXt/tex/texmf-context/tex/context/base/mkiv/cldf-ini.lua:1120: in upvalue 'sprint' ...eXt/tex/texmf-context/tex/context/base/mkiv/cldf-bas.lua:180: in upvalue 'ctx_latelua' ...eXt/tex/texmf-context/tex/context/base/mkiv/anch-pos.lua:643: in function <...eXt/tex/texmf-context/tex/context/base/mkiv/anch-pos.lua:601> (...tail calls…) 1 2 3 \starttext 4 5 >> Hello, world! 6 7 \stoptext 8 Alan

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date calculated with currentdate plus n days
by Jan U. Hasecke 15 Aug '18

15 Aug '18

Hi all, I want to insert a due date for payments in my invoice and I would like to calculate it from \currentdate. Something like define \duedate = \currentdate plus 10 days Is this possible? juh

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how to put page X of N in header or top space?
by David Walther 14 Aug '18

14 Aug '18

Hi, I am slowly learning ConTeXt. I am generating tables and spreadsheets, and transforming them into ConTeXt, finally got it working after a lot of mysterious errors about missing } as macro arguments. I have read this page carefully: http://wiki.contextgarden.net/Layout How can I alter the page number? Is it in the header, or is it in the topspace? I want this to be at the top of each page of my spreadsheet: My Spreadsheet (centered) Page 1 of 3 (right justified) And on even pages, the other way around: Page 2 of 3 (left justified) My Spreadsheet (centered) What is the right way to do this? Is there an override and a blob of code I need to put into one of the boxes in the Layout? David

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