September 2012 - ntg-context - NTG Mailing Lists

Lua conditionals fail inside \starttexdefinition
by Marco Patzer 05 Sep '12

05 Sep '12

Hi, I discovered strange behaviour concerning Lua conditionals within texdefinitions. ConTeXt complains: 'then' expected near 'thenelseend'. I guess it has something to do with how the content of a texdefinitions is grabbed. Seems like a bug or is this by design? % This works fine \def\mycmd{% \startluacode if true then else end \stopluacode} % This one fails % \starttexdefinition mycmd % \startluacode % if true then % else % end % \stopluacode % \stoptexdefinition \startluacode userdata = userdata or { } function userdata.myfun() if true then else end end \stopluacode % This also works fine \starttexdefinition mycmd \luacode{userdata.myfun()} \stoptexdefinition \mycmd Marco

6 16

Setting options for every n-th row in natural TABLEs
by Aditya Mahajan 05 Sep '12

05 Sep '12

Hi, On Edward Tufte's website, there is a discussion on zebra coloring in tables[1]. One of the suggestion is to add a horizontal rule after every third line or shade three lines with one background color and the remaining three with another background color. Is there an easy way to do this with natural TABLEs? I can do something like: \setupTABLE[row][1,2,3][background=color, backgroundcolor=gray] \setupTABLE[row][7,8,9][background=color, backgroundcolor=gray] but it requires knowing the number of lines in advance. Aditya [1]: http://www.edwardtufte.com/bboard/q-and-a-fetch-msg?msg_id=0001IV

6 11

\startluacode and macro names with underscores
by Marco Patzer 04 Sep '12

04 Sep '12

Hi, the luacode environment chokes on macro names with underscores. Example: \starttext \unprotect \def\number_two{two} \startluacode userdata = userdata or { } function userdata.number_one() context("one") end -- works userdata.number_one() -- fails -- context.number_two() -- workaround tex.print("\\number_two") \stopluacode \protect \stoptext Why is that and what can be done to access underscored macros in the usual way? I guess it's some catcode change from the function that prints into the TeX stream. Marco

3 2

Component: \product, \project
by Procházka Lukáš Ing. - Pontex s. r. o. 04 Sep '12

04 Sep '12

Hello, when looking at http://wiki.contextgarden.net/Project_structure - - why \product and/or \project specification is used in the COMPONENT in the example, or why is it supposed or even required to use in components? I imagined that component doesn't need to know in which project/product is used, even when in may be intended to more projects/products. So does it mean I would have to enumerate all projects/products in which the component is to be used? Or can be \product and/or \project specification omitted in the component? Best regards, Lukas -- Ing. Lukáš Procházka [mailto:LPr@pontex.cz] Pontex s. r. o. [mailto:pontex@pontex.cz] [http://www.pontex.cz] Bezová 1658 147 14 Praha 4 Tel: +420 244 062 238 Fax: +420 244 461 038

2 2

Re: [NTG-context] Include chapter number in figure numbering
by Robert Blackstone 04 Sep '12

04 Sep '12

On 4 Sep 2012, at 10:46 , 08:55:10 +0200 Marco Patzer <homerow(a)lavabit.com> wrot > > Hi Sietse, > >>> how do I include the chapter number in the figure numbering? >> >> Untested: >> \setupcaptions[prefixsegment=chapter] > > This works with beta 2011-11-29, but unfortunately not in a current > one. Does it work for you? Hi, This works (for me) in mkiv of 25-08-2012: \setupcaption[figure][number=yes,way=bychapter,prefix=yes,prefixsegments=chapter] Best regards, Robert Blackstone

1 0

Include chapter number in figure numbering
by Marco Patzer 04 Sep '12

04 Sep '12

Hi, how do I include the chapter number in the figure numbering? The following example used to produce (as of November 2011) “Figure 1.1”. A current beta yields merely “Figure 1”. \starttext \startchapter [title=Foo] \startplacefigure [title=Bar] \stopplacefigure \stopchapter \stoptext Marco

3 5

Stretching width in natural TABLEs
by Aditya Mahajan 04 Sep '12

04 Sep '12

Hi, Is it possible to stretch the widths of each column in natural TABLEs, so that the widths are in a certain propotion? For example, suppose I have a table with three columns and I want to set the width of the first column to a fixed amount, and split the remaining space between columns two and three in a 1:2 ratio. Extreme tables implement something similar using option={stretch, width}, but AFAIU, it is not possible to fix the width of a particular column. Aditya

4 6

ConTeXt color to text
by Peter Rolf 04 Sep '12

04 Sep '12

Hi, for a batch command (ImageMagick) I need to convert ConTeXt colors to a text representation (e.g. rgb 'red' -> 'rgb(255,0,0)'; same for color models cmyk and gray). What is the best way to get (read only) access to the color channels of a defined color? Peter

2 2

Re: [NTG-context] \startchapter[title=Test] is not working inside \startcomponent
by Jeong Dalyoung 04 Sep '12

04 Sep '12

Dear Marco, Aha, I missed to put the name of the component. With the component name, it works fine. I am sorry for the noise. Thank you. Best regards, Dalyoung

1 0

\startchapter[title=Test] is not working inside \startcomponent
by Jeong Dalyoung 04 Sep '12

04 Sep '12

Dear Listers, \startchapter[title=Test] is working inside \starttext and \stoptext. But it is not working inside \startcomponent and \stopcomponent. Is it a natural behavior? I am using iMac, OSX Mountain Lion. And the ConTeXt version is "ConTeXt ver: 2012.08.28 20:00 MKIV fmt: 2012.9.4 int: english/english" A short test file is: %\startcomponent \starttext \startchapter[title=Test] \input knuth \stopchapter \stoptext %\stopcomponent Thank you for reading. Best regards, Dalyoung

2 1