October 2011 - ntg-context - NTG Mailing Lists

processing style inside verbatim in XML
by Mojca Miklavec 24 Oct '11

24 Oct '11

Hello, Is there any simple way to typeset the following example properly in ConTeXt? I have an example of text that has to obey lines and spaces, but I would like to apply some color to make it more readable. The attachment contains an example of HTML which displays fine in my browser, and it should look similar with ConTeXt. I have problems with literal typesetting of <span class=...> (that should have applied style instead), but maybe I only have wrong settings in my parser. When I use \xmlsetfunction{main}{pre}{lxml.displayverbatim}, then I cannot color the numbers. When I use, according to Wolfgang's suggestion, \startxmlsetups pre \setuplines[style=mono,space=yes] \startlines \xmlflush{#1} \stoplines \stopxmlsetups then all the spaces are eaten up by XML parser (or somewhere else), so that I don't get the desired result. Any ideas about this? I'm also sending a self-contained example with \setuplines which doesn't really work in the desired way. Thank you very much, Mojca

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MetaFun: Confusion with `function()` and `xyscaled`
by Paul Menzel 23 Oct '11

23 Oct '11

Dear ConTeXt/MetaFun folks, looking at the example for grid and functions in the MetaFun manual [1] section 9.3 drawoptions(withpen pencircle scaled .25pt withcolor .5white) ; draw hlingrid(0, 20, .2, 20cm, 10cm) ; draw vloggrid(0, 10, .5, 10cm, 20cm) ; drawoptions(withpen pencircle scaled .50pt) ; draw hlingrid(0, 20, 1, 20cm, 10cm) ; draw vloggrid(0, 10, 1, 10cm, 20cm) ; fmt_pictures := false ; % use TeX as formatting engine textextoffset := ExHeight ; % a variable set by ConTeXt draw hlintext.lft(0, 20, 5, 20cm, "@3e") ; draw vlogtext.bot(0, 10, 9, 10cm, "@3e") ; draw function(1,"log(x)","x",1,10,1) xyscaled (10cm,2cm) withpen pencircle scaled 5mm withcolor transparent(1,.5,yellow) ; I am confused how the resulting function is scaled correctly. The resulting dimensions seem to be 10cm and 18 cm. So I guess the 2 cm mean to shift it up some how. Could someone please explain to me how `xyscaled` works in this case please. I though `xyscaled (αcm, ζcm)` would set the object/path to a width of α cm and a height of ζ cm. Thanks, Paul [1] http://www.pragma-ade.com/general/manuals/metafun-s.pdf

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Script to upload modules to context garden
by Aditya Mahajan 22 Oct '11

22 Oct '11

Hi all, I finally got tired of manually uploading new versions of modules to context garden. So, here is a ruby script that automates the task: <https://github.com/adityam/contextgarden-update/blob/master/update> This uses `mechanize` library for HTML scrapping and `highline` library for user interaction. To use the script, simply run update [modulename] The script will prompt you for username and password, then display a list of all the modules that you own, and you can select a module to update. Then, the script asks for a new version number and filename for the zip file and then uploads the module. If the optional modulename argument is provided, then that module is automatically selected for update. I don't try to parse the returned page, but simply dump it to the output. Hopefully, someone else might find this useful. Aditya

1 0

installing mkiv
by Wolfgang Werners-Lucchini 22 Oct '11

22 Oct '11

Hallo, I tried to install a mkiv-only context with: first-setup --context=luatex but there is no texmf-context folder. What I am doing wrong? Wolfgang

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Standardmakeup
by Willi Egger 22 Oct '11

22 Oct '11

Hi, When using the \startstandardmakeup ... \stopstandardmakeup the text gets vertically centered on the page. Normally \setupmakeup[standard][top=,bottom=] would produce the text vertically aligned normally. However in the beta of today \setupmakeup[standard][top=,bottom=] has no effect and the text is aligned vertically centered. - Do I miss something? Willi

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metapost question
by Hans van der Meer 21 Oct '11

21 Oct '11

I cannot find the answer to the following question in Knuth's Metafont book. The following definition with a trailing text argument: def mydef (expr a, b, c) text modifier = if <modifier = empty>: else: fi enddef; How can I do the switch on an empty or nonempty modifier argument? It is not a string because calling its length fails with an error. I must do the switch, because "fill modifier" with an empty "modifier" gives horrible results. Usage would be calls like: mydef(1,2,3) withcolor green; % with modifier text mydef(1,2,3); % without modifier text Thanks in advance. Hans van der Meer

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Error with anglebetween(…)
by Andreas Harder 21 Oct '11

21 Oct '11

Hello Hans, has something changed with the anglebetween definition in MetaPost? I’m sure this worked a couple of betas ago. \startMPpage path p,q ; p := origin -- (50,0) ; q := origin -- (50,50); drawarrow anglebetween(p,q,"somelabel") ; \stopMPpage ! Missing `)' has been inserted. Regards Andreas

1 0

[m-chart] Focus feature
by Marco 20 Oct '11

20 Oct '11

Hi, it's me with flow chars again. I didn't get the focus feature to work. The following example does not focus anything. Has the syntax changed or is the feature gone? %%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \usemodule [chart] \setupFLOWfocus [framecolor=yellow] \setupFLOWcharts [focus=bar] \startFLOWchart [mychart] \startFLOWcell \name {foo} \location {1,1} \shape {action} % mandatory, otherwise error \text {Foo} \stopFLOWcell \startFLOWcell \name {bar} \location {1,2} \shape {action} % mandatory, otherwise error \text {Bar} \connection [tb] {foo} \stopFLOWcell \stopFLOWchart \starttext \FLOWchart [mychart] \stoptext %%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Another issue: According to the manual, “action” should be the default shape. However, when no shape is specified, an error is raised. Is it a bug? Regards Marco Patzer

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Problem with MPpage
by Lutz Haseloff 20 Oct '11

20 Oct '11

Hi all, next Metapost problem. \starttext \startMPpage pickup pencircle scaled 2mm ; draw (0,0)--(5cm,5cm) withcolor red; \stopMPpage \stoptext The resulting pdf does not show the whole red line. The size of the pdf is right but it is shifted to the upper right. Thanks for any help Lutz

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Bug in latest beta
by Andreas Harder 20 Oct '11

20 Oct '11

Hi Hans, something is wrong with the \mathprime definition in math-pln.mkiv. The compilation of \starttext $f'(x)$ \stoptext Stopps with: \dodomathprime ->\normalprime \futurelet \nexttoken \dododomathprime Regards Andreas

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