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interesting link
by Hans Hagen 18 Sep '12

18 Sep '12

Hi, As Luigi hasn't posted a link in a while ... here is one that looks interesting http://www.nongnu.org/gsl-shell/doc/ (would fit nicely in luatex a library given that tex as system for typesetting is used for scientific publishing) Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------

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[.tuc] oddity when storing a table
by Philipp Gesang 17 Sep '12

17 Sep '12

Hi all, I can’t explain the following behavior of the .tuc writer. When passed a nested hash, context fails on the second pass if the array part of the first nesting depth is empty: ······································································· %% the commented lines work \startluacode job.variables.tobesaved.foo = { bar = { } } -- job.variables.tobesaved.foo = { "works now", bar = { } } -- job.variables.tobesaved.foo = { bar = "works too" } \stopluacode \starttext foo \stoptext ······································································· I get this error: ······································································· ! LuaTeX error ...text/tex/texmf-context/tex/context/base/cldf-ini.lua:410: no string to print stack traceback: [C]: in function 'flush' ...text/tex/texmf-context/tex/context/base/cldf-ini.lua:410: in function <...text/tex/texmf-context/tex/context/base/cldf-ini.lua:360> (tail call): ? ...text/tex/texmf-context/tex/context/base/core-uti.lua:112: in function 'initializer' ...text/tex/texmf-context/tex/context/base/core-uti.lua:200: in function 'load' ...text/tex/texmf-context/tex/context/base/core-uti.lua:66: in function 'initialize' <main ctx instance>:1: in main chunk. system > tex > error on line 1 in file /home/phg/context/tex/texmf-context/tex/context/base/cont-yes.mkiv: LuaTeX error ... ······································································· Bug? Regards Philipp

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Exploring the Lua innards of ConTeXt: showtable
by Sietse Brouwer 17 Sep '12

17 Sep '12

Hi all, ConTeXt mkiv stores all sorts of things in Lua tables, but 'what goes where' does not tend to be documented. So here is a function to print out a table's contents to get something like the following excerpt. The excerpt is from the output of `userdata.showtable(structures.lists)` in a document with three \placefigures and one \placeformula. Note the reference in T.cached.1.references.reference, and the caption in T.cached.1.titledata.title (T stands for the table yone passed to showtables); and note how the tables of figures 2 and 3 are not printed, because they follow the same pattern as table 1. (You can tell showtable to print everything, natch.) T.addto : function: 0xa4c8818 T.analyze : function: 0xb1c27b0 T.cached : table: 0xb1c2240 T.cached.1 : table: 0xc3f7b18 T.cached.1.metadata : table: 0xc3f7d58 T.cached.1.metadata.kind : float T.cached.1.metadata.name : figure T.cached.1.prefixdata : table: 0xc3f7c68 T.cached.1.prefixdata.connector : . T.cached.1.prefixdata.prefix : no T.cached.1.references : table: 0xc3f7ba8 T.cached.1.references.reference : ref:asdf T.cached.1.titledata : table: 0xc3f7b40 T.cached.1.titledata.title : caption 1 T.cached.2 : table: 0xc467bb8 (like T.cached.1) T.cached.3 : table: 0xc4731a8 (like T.cached.1) T.cached.4 : table: 0xc47c988 T.cached.4.metadata : table: 0xc47d628 T.cached.4.metadata.kind : formula T.cached.4.metadata.name : formula (You can't see it in this e-mail, but the colons of entries in the same subtable nicely line up with each other.) Usage: put showtable.lua in your working directory and run the following code: \starttext % \placefigure[][ref:asdf]{caption 1}{picture 1} \startluacode require('showtable') userdata.showtable(structures.lists) \stopluacode \stoptext Extra options can be passed as part of an options table. (This allows overriding one option without respecifying the others.) userdata.showtable( structures.lists, { everything=true, -- descend even into similar-looking siblings tablename='S.L' } ) Output is printed to the terminal, alas, because I couldn't discover how to print to the log. Anybody know anything about this? Hopefully this may be useful to someone, next time they they're hunting for something in the bowels of ConTeXt. Interesting tables to look at: * userdata.showtable(commands) contains a great miscellanea of helper commands * userdata.showtable(context) also contains a great miscellanea of commands * userdata.showtable(tex) seems to show lua access functions to some plain tex stuff * userdata.showtable(lxml) gives a list of lxml-related functions Cheers, Sietse

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Bug in xits font? No widehat shows up
by Otared Kavian 17 Sep '12

17 Sep '12

Dear Khaled, dear Hans, I noticed that when using xits fonts the command \widehat is ignored (though \hat gives the expected result). Minimal example %%% begin example \setupbodyfont[xits,11pt] \starttext By definition we set ${\widehat \phi}(\xi) := {\cal F}(\phi)(\xi)$ that is \startformula {\hat \phi}(\xi) = \widehat{\phi}(\xi) = {\widehat \phi}(\xi) := {\cal F}(\phi)(\xi) := (2\pi)^{-N/2}\int_{{\Bbb R}^N}{\rm e}^{-{\rm i}\xi\cdot x}\phi(x) dx. \stopformula \stoptext %%% end example This bug report concerns mkiv version ConTeXt ver: 2012.09.16 23:18 MKIV fmt: 2012.9.17. However in older versions the same problem exists. I don't know whether this is a bug in mkiv or in xits fonts. Best regards: OK

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international documents
by Pavel Dohnal 17 Sep '12

17 Sep '12

Hello, I am creating script which generates context source from database data. Then converts context to pdf and sends it to user. Problem is that users enter international texts into database and some characters are not present in final pdf. Here is my minimal example: %interface=en translate-file=utf-8 \enableregime[utf] \starttext This is in Japan: 日本, 神奈川県藤沢市藤沢７５ \stoptext Now I run: context file.tex But japaneese character are missing in final pdf. You can see in attached file. Is there a way how to create documents which can be writen in any international language? Thanks for your help Pavel Dohnal

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Formulas include chapter number
by Marco Patzer 17 Sep '12

17 Sep '12

Hi, the last beta includes the chapter number in formulas, former betas didn't. Example: \starttext \startchapter [title=Foo] \startplaceformula \startformula E=mc^2 \stopformula \stopplaceformula \stopchapter \stoptext ∙ Is this intended? ∙ How to remove the chapter number from the formula? Marco

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Problem with \useMPlibrary[txt]
by pol stra 17 Sep '12

17 Sep '12

Dear all, There is a problem with \useMPlibrary[txt] at compilation time (ConTeXt ver: 2012.09.11 20:36 MKIV): metapost > loaded: library 'txt' (/opt/context-minimals/texmf-context/tex/context/base/meta-imp-txt.mkiv ! Undefined control sequence. system > tex > error on line 149 in file /opt/context-minimals/texmf-context/tex/context/base/meta-imp-txt.mkiv: Undefined control sequence ... 139 \ht\scratchbox\parheight 140 \dp\scratchbox\zeropoint 141 \box\scratchbox 142 \getshapecharacteristics 143 \egroup} 144 145 \def\setupshapetexts% 146 {\dodoubleempty\getparameters[\??sh]} 147 148 \setupshapetexts% 149 >> [\c!bodyfont=] 150 151 %%%%%%% rotfont nog definieren 152 153 \doifundefined{RotFont}{\definefont[RotFont][RegularBold]} 154 155 \def\processfollowingtoken#1% strut toegevoegd 156 {\appendtoks#1\to\MPtoks 157 \setbox\MPbox=\hbox{\RotFont\setstrut\strut\the\MPtoks}% 158 \startMPdrawing 159 n := n + 1 ; len[n] := \the\wd\MPbox ; <argument> \??sh \setsomevalue #1#2->\expandafter \def \csname #1 #2\endcsname \syst_helpers_get_parameters_assign_indeed ...{#2} {#3} \syst_helpers_process_comma_item ...mpty \_e_o_p_ \doubleexpandafter \syst_h... \syst_helpers_get_parameters ...ss_comma_item #1,] ,\_e_o_p_ l.149 [\c!bodyfont=] The fact is I don’t realy know what it is for, I took it from the wiki (http://wiki.contextgarden.net/User-Defined_Enumerations) Maybe it is not compatible with Mkiv? Best regards

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Wrong spacing in \unit
by Marco Patzer 17 Sep '12

17 Sep '12

Hi, when \unit is used just with a unit, without a number, the spacing at the left is wrong. Example: \starttext % wrong spacing (\unit{micro mol per second}) % spacing OK (\unit{3 micro mol per second}) \stoptext Marco

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Strange bug with reversed itemize
by Aditya Mahajan 16 Sep '12

16 Sep '12

Hi, For some reason, the numbering in itemize is affected by the value of userpage! \setupuserpagenumber[start=12] \starttext \startitemize[n,reverse] \item One \item Two \stopitemize \stoptext With ConTeXt 2012.09.11 20:36 I get 13. One 12. Two Any ideas? Aditya

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MKII & MKIV difference between \textrule
by Alessandro Perucchi 16 Sep '12

16 Sep '12

Hello, In my experimentation, I've found that in mkii and mkiv the behavior of \textrule and \setuptextrule are different... What I did was quite simple: \textrule{Testing head} blah blah blah \textrule in mkii the text in well centered between the lines. But in mkiv the bottom line is too near the text, and I need to add something like \blank[halfline] to have a similar behavior as mkii. And apparently the command \starttextrule ... \stoptextrule doesn't work (this was explain in the cont-entp.pdf page 204) in either mkii & mkiv. Am I missing something? Sincerely yours, Alessandro

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