- ntg-context - NTG Mailing Lists

Usage of filename in document
by Martin Scholz 06 Nov '09

06 Nov '09

Hi List, is there a way in conTeXt how I can use a filename, so that I can write a text where I can refer to it for using it in the following scenario: I need 4 documents with nearly the same content. what I like to do is to switch in the document depending on the called filename. as I got a file called invoice.tex and create some links to this file called delivery.tex order.tex and so on and now call texexec invoice.tex or texexec order.tex I want the document to recognize in the first case that it is invoice and in the second case that it is order, so that I can use an if then else environment on the different parts where I can define the following if{filename==invoice} then{print this content} else{} if{filename==order} then{print this part of content} else{} Thanks for your help. Greetings Martin

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Re: [NTG-context] Setup itemize
by Wolfgang Schuster 06 Nov '09

06 Nov '09

Am 05.11.2009 um 23:27 schrieb Vyatcheslav Yatskovsky: > Unfortunatelly, no. :( >> >> Untested: \setupitemize[each][...][indenting={yes,first,big}] make a *small* example Wolfgang

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Allow indentation of typing environments
by Matthijs Kooijman 05 Nov '09

05 Nov '09

Hi all, I'm having the following problem (or rather, inconvenience). When typing my ConTeX, I tend to properly indent all of my text, following the section headings. This makes my source a bit more readable. However, when I apply the same tactic to typing environments, all of the indentation is preserved in the output. This is of course to be expected, but it requires me to break the indentation for every typing environment, making very ugly source. Anyone else who also finds this problematic? What I'd like to see, is an option for a typing environment (say, stripindent) that makes the pretty printing code remove a fixed amount of indentation from every line. I've implemented this for some of my custom prettyprinters, but that's a lot of duplicate code, and it won't help others. Ideally, this would look at the indent of the \starttyping command and strip that much, but I don't think this is possible in TeX (or is it?) Slightly less ideal would be to look at all the lines, decide what the smallest indent is, and strip that. This would of course require buffering all the lines and start processing only when the final one is in, which is not very efficient given the current pretty printer implementation. What will probably work well enough is to look at the first line, and strip that much whitespace from all lines. This could be implemented entirely in lua. Would there be any interest for something like this? I could whip up a patch if there is. Where would be the logical place to do this? I don't see any need to let individiual pretty printers keep control over this, so I guess it is best handled before the pretty printers get at the line (So in buffers.typeline, probably. I guess inline \type commands don't need this, so this should work out). This also needs some initialization in buffers.type and buffers.typefile so we can detect what the first line is. Ideally, there would also be some sort of manual override, like: \starttyping[stripindent=4] but, I don't think any options are supported there currently (and adding them is very much over my head, since that would involve serious TeX coding...). To reach a conclusion, if I managed to implement this properly, would there be any interest for using this and including this in ConTeXt? Gr. Matthijs

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spac-ver.lua:580: attempt to index field 'spec'
by Peter Münster 05 Nov '09

05 Nov '09

Hello, With this test-file: \starttext \blank[force] bla \stoptext I get the following error: error: ...text/tex/texmf-context/tex/context/base/spac-ver.lua:580: attempt to index field 'spec' (a nil value) Workaround: \starttext \strut\blank bla \stoptext Cheers, Peter -- Contact information: http://pmrb.free.fr/contact/

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Getting the width of an expression inside lua
by Matthijs Kooijman 05 Nov '09

05 Nov '09

Hi all, I'm wondering if there is any way to get the width of some TeX (or rather, ConTeXt) expression inside lua, to do some math with it and output it again. I've found the tex macro \setwidthof, which served me well at first, but I need to do some more complex things with this widths (like taking the maximum value of a bunch of widths and using that again in some other places). Doing this in TeX would be my fallback option, but that would be a lot more complex (I'd be generating the TeX code for it, but still...). So, I'm looking for a function that accepts a string (and possible catcodes) and returns the dimensions of that string as if it would be rendered directly with tex.sprint & friends. I've looked around the LuaTex manual a bit, and found the node.dimensions function. However, that function requires a node object, which I have no clue how to get at. Perhaps I could use \setwidthof and get at the value it assigned? Any suggestions? Gr. Matthijs

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horizontal position
by Wolfgang Schuster 05 Nov '09

05 Nov '09

Hi, whats the best method to determine the current horizontal position in the text because I want to write a commands which behaves different whether it appears at the begin, end or in the middle of the text. pdfTeX’s savepos information are not the best method because it could take (in the worst case) to many when i have many macros in a paragraph, display math mode can give me the information i want (in combination with savepos information) but i wan't to know if there a side effects. Example: \def\position {\bgroup \forgetdisplayskips \everymath{}% \everydisplay{}% $$\xdef\theposition{\the\predisplaysize}$$% \vskip-2\baselineskip \hskip\dimexpr\theposition-2em\relax \ifhmode\aftergroup\space\fi\aftergroup\theposition \egroup} \starttext text text \position{} text text text text text text text \position{} text \stoptext Wolfgang

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Re: [NTG-context] Setup itemize
by Wolfgang Schuster 05 Nov '09

05 Nov '09

Am 05.11.2009 um 17:18 schrieb Vyatcheslav Yatskovsky: > Thank you, Wolfgang, both work at last. > > But > 1) the very first item is not indented > > 2) the indent width is not equal to indent in body text. (I use > \setupindenting[yes, big]) > > What can I do with it, please? Untested: \setupitemize[each][...][indenting={yes,first,big}] Wolfgang

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Re: [NTG-context] Setup itemize
by Vyatcheslav Yatskovsky 05 Nov '09

05 Nov '09

Sorry, Wolfgang, this trick does not work too and breaks other settings. :( Do you have another idea, pls? >> Actually, this does not work. Adding this option only adds blank >> lines between items, that is, breaks other options. >> >> \setupitemize[1, indenting=yes, packed, nowhite, intext] > > \setupitemize[1,packed,nowhite,intext][indenting=yes] Vyatcheslav

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Re: [NTG-context] Setup itemize
by Vyatcheslav Yatskovsky 05 Nov '09

05 Nov '09

Hi Wolfgang, Actually, this does not work. Adding this option only adds blank lines between items, that is, breaks other options. \setupitemize[1, indenting=yes, packed, nowhite, intext] > \setupitemize[indenting=yes] > > Wolfgang Minimal example: \starttext \setupitemize[1, indenting=yes, packed, nowhite, intext] Some Text Some Text Some Text Some Text Some Text Some Text Some Text Some Text Some Text \startitemize \item {\it OpenGL }(Open Graphics Library) – найбільш розвитий і швидкий промисловий стандарт, \item {\it Direсt3D –} використовується як убудована мова в операційних системах Windows, \item {\it Heidi} – використовується в AutoCAD і інших програмах. використовується в AutoCAD і інших програмах. \stopitemize Some Text Some Text Some Text Some Text Some Text Some Text Some Text Some Text Some Text \stoptext Regards, Vyatcheslav

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Re: [NTG-context] Itemize setup
by Vyatcheslav Yatskovsky 05 Nov '09

05 Nov '09

Ooops, sorry! ) Wrong list ) Thank you, Wolfgang! > You should ask context related question on the context list. > > \setupitemize[indenting=yes] > > Wolfgang > > Vyatcheslav

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