February 2016 - ntg-context - NTG Mailing Lists

Vim snippets
by David Nebauer 29 Feb '16

29 Feb '16

Hi, Newbie question: are there any vim snippets available for context? The context wiki vim page (<http://wiki.contextgarden.net/Vim>) makes no mention of any. I couldn't find anything on github (but there are hundreds of matches since "context" is such a generic word).

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new lua error (latest beta)
by Alan Bowen 29 Feb '16

29 Feb '16

I have a number of docs that have processed properly until the latest beta. Now I get this complaint in each very early in the processing: lua error > lua error on line 39 in file xxxxxxx: ...eXt/tex/texmf-context/tex/context/base/mkiv/strc-not.lua:324: attempt to index field '' (a nil value) stack traceback: ...eXt/tex/texmf-context/tex/context/base/mkiv/strc-not.lua:324: in function 'action1' [string "..."]:6: in function <[string "..."]:5> (...tail calls...) Is this a bug or has there been some change in ConTeXt coding that I need to address? Alan

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problem with page number on last page
by Alan Bowen 29 Feb '16

29 Feb '16

To prevent empty pages in a double-sided page environment, I have been using \setuppagenumbering[page=]. This does not work as it should, however, when there is no body text but only a continuing footnote on the last page. Then, though there are still no empty pages, the pagenumber on the last page is the same as that on the preceding page. Consider \setuppagenumbering[alternative=doublesided] \setuppagenumbering[page=] \starttext \dorecurse{3}{\input knuth}\footnote{\dorecurse{3}{\input knuth}} %\input knuth \stoptext with and without the line currently commented out. Any suggestions will be greatly appreciated. Alan

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math with Unicode characters
by Pablo Rodriguez 29 Feb '16

29 Feb '16

Dear list, I have the following sample: \definefallbackfamily[mainface][rm][TeX Gyre Pagella][range={⋀}] \definefontfamily[mainface][rm][EB Garamond] \starttext ⋀ \stoptext Is there any way to have the Unicode character on the final PDF document without having to edit the text? Many thanks for your help, Pablo -- http://www.ousia.tk

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Re: [NTG-context] \setupsectionblock and \setupbackgrounds page-break problem
by Robin.Kirkham＠csiro.au 29 Feb '16

29 Feb '16

> From: Wolfgang Schuster <schuster.wolfgang(a)gmail.com> > Subject: Re: [NTG-context] \setupsectionblock and \setupbackgrounds page-break problem > Date: 29 February 2016 8:11:01 AEDT > >> Robin.Kirkham(a)csiro.au 28. Februar 2016 um 14:49 >> Folks, >> >> I want \startfrontmatter to trigger a background image, but I can only get this to appear if I use page=yes (see example below). >> >> However, I don’t want any page break between the front-matter and body-matter. If I use page=no (as in the line commented out) this page break disappears — but so does the background image! >> >> How can I get the background behind the page where the front-matter text appears, but with no page break before the body-matter? > > Set the page background outside of the sectionblock. … and use \setlayer. Thanks Wolfgang, I think I’m piecing together how layers, backgrounds and the pagebreak mechanism fit together. Regards, Robin

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Customize grid layout
by Zhichu Chen 29 Feb '16

29 Feb '16

Dear TeXers, Is it possible to define the layout like: \setuplayout [grid=yes% ,lines=6% ,gridstyle={1,1,1,3.5,1,1}% ] so that I can have 6 lines per page, but the 4th line skips will be 3.5\baselineskip. For your information, the blank between the first 3 lines and the rest ones is used to display the page number (it's not a joke although April is close). I was thinking putting an invisible rule after each CJK glyph as a font feature, and the height of the rule changes every 6 lines starting from 4. But \linenumber seems to be an MKII-only counter. Any suggestions? -- Best regards, ℤhichu ℂhen Shanghai Institute of Applied Physics No. 2019, Jialuo Road Jiading, Shanghai, P.R.China Tel: +86-21-39194888

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Re: [NTG-context] Controlling \at output
by Aidan Nichol 28 Feb '16

28 Feb '16

Thanks for the reply. \thispage is producing no output in all the places it is being invoked Aidan > On 24 Feb 2016, at 15:35, ntg-context-request(a)ntg.nl wrote: > > startsetups[referenceformat:thispage] > \doifelse{\filterreference{page}}{\rawcountervalue[userpage]} > {{\tttf !?}} > {\filterreference{page}} > \stopsetups > > \definereferenceformat[thispage][setups=referenceformat:thispage] > > \starttext > > \chapter[one]{First chapter} > > First: \thispage[one] > > Second: \thispage[two] > > \chapter[two]{Second chapter} > > First: \thispage[one] > > Second: \thispage[two]

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\setupsectionblock and \setupbackgrounds page-break problem
by Robin.Kirkham＠csiro.au 28 Feb '16

28 Feb '16

Folks, I want \startfrontmatter to trigger a background image, but I can only get this to appear if I use page=yes (see example below). However, I don’t want any page break between the front-matter and body-matter. If I use page=no (as in the line commented out) this page break disappears — but so does the background image! How can I get the background behind the page where the front-matter text appears, but with no page break before the body-matter? Robin \setupexternalfigures[location=default] \definelayer[frontbackground] \setlayer[frontbackground]{% \externalfigure[mill.png] [width=\paperwidth,height=\paperheight] } \unexpanded\def\frontpartbefore{ \setupbackgrounds[page] [background=frontbackground] } \setupsectionblock[frontpart][page=yes,before=\frontpartbefore] %\setupsectionblock[frontpart][page=no,before=\frontpartbefore] \setupsectionblock[bodypart][page=no] \starttext \startfrontmatter Should be on a first page \stopfrontmatter \startbodymatter Should follow frontmatter with no page break \stopbodymatter \stoptext

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Math fractions
by Aditya Mahajan 28 Feb '16

28 Feb '16

Something is wrong in the current implmentation of \tfrac. If we take away all the bells and whistles provided by \definemathfraction, * \tfrac#1#2 should be equal to {\textstyle #2 \over #1} * \dfrac#1#2 should be equal to {\displaystyle #2 \over #1} * \frac should be equal to \tfrac in inline math and \dfrac in display math. In the current implmentation \frac works correctly, but \tfrac does not. For example: \startbuffer \frac 12 \tfrac 12 \dfrac 12 \stopbuffer \starttext $\getbuffer$ \startformula \getbuffer \stopformula \stoptext The output of \frac and \dfrac is correct in both inline and display mode. The output of \tfrac is wrong in both modes. In both modes, \tfrac should equal the current output of \frac in inline mode. Although I don't completely understand the code, my guess is that there is a bug in how mathstyle=text is implemented (really, mathstyle=text should be equivalent to mathstyle=empty in inline math mode). Thanks, Aditya

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Getting file name of \externalfigure in the header/footer (mkii)
by Gerben Wierda 28 Feb '16

28 Feb '16

Hi folks, I have a file that I use to combine PDF files in one bigger file. The pages are A4 or A3, rotated or not. This results in a mixed A4/A3 document that I can print and distribute. Example page: \page\setuppapersize[A4,portrait][A4,portrait] \setuplayout[backspace=10mm,topspace=10mm,width=277mm,height=190mm,header=5mm,footer=1mm] \rotate[rotation=90]{\externalfigure[Exercise-1a-B2B-web-site-Anna-A.pdf][width=\hsize]} I'd like to have the name of the external file in the header. Can I do that? G PS. I'm still using mkii for my production (only used mkiv for a transformation to EPUB 1.5 ears ago).

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