November 2020 - ntg-context - NTG Mailing Lists

Running mtxrun in a continuous batch mode
by Ramkumar KB 07 Nov '20

07 Nov '20

Hello, I am trying to run mtxrun in a batch process and read the available documentation here - https://wiki.contextgarden.net/Running_ConTeXt_without_a_shell My usecase is being able to create PDF docs based on the input data that comes in a JSON format (in a continuous batch process). In ConTeXt, thanks to the Lua engine, I am able to inject a JSON read from a file - and use the JSON in the tex file (here variable `tab` holds the JSON). How do I make this as a continuous webservice - in comes JSON and out comes the PDF ? \startluacode require("test-json") \stopluacode The name of the document is \ctxlua{tex.print(tab['documentName'])} Any tips or pointers would be much appreciated. Thank you, Ramkumar

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expansion and protrusion working again
by Pablo Rodriguez 06 Nov '20

06 Nov '20

Dear list, one of the features I noticed in current latest (from yesterday [2020.11.06]) is that hz and hanging are working again. Huge thanks to Hans and Wolfgang for enabling this again. Pablo -- http://www.ousia.tk

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messages on undefined control sequences
by Pablo Rodriguez 06 Nov '20

06 Nov '20

Hans, this is a standard eror message now: tex error > tex error on line 9 in file cont-yes.mkiv: Undefined control sequence <macro> \strc_sectioning_empty_correction \ifconditional \c_strc_sectioning_empty \penalty \plustenthousand \vskivskip -\lineheight \kern \zeropoint \prevdepth \strutdepth \fi <macro> \strc_sectioning_after_yes ...l \c_strc_sectioning_auto_break \spac_vspacing_same_page \currentheadlevel \plusone \fi \strc_sectioning_empty_correction \headparameter \c!after \strc_sectioning_depth_correction \fi <macro> \strc_sectioning_handle ...synchonization \let \getheadtitle \fullheadtitle \strc_rendering_place_head_text \dostoptagged \strc_sectioning_after_yes \orelse \ifconditional \c_strc_sectioning_hidden \strc_sectioning_register {#1}{#2}{#3}\strc_sectioning_report \let \gethe... <macro> \syst_modes_set_yes #1->\settrue \c_syst_modes_set_done #1 \doifelsenextoptionalcs \syst_modes_set_start \syst_modes_set_quit <macro> \CoverPageTitle \startmodeset [**en, **uk] {\hiddentitle {[Cover page]}}[**es] {\hiddentitle {[Portada]}} [**deo,**de,**de-de,**de-at,**de-ch] {\hiddentitle {[Bildtitelseite]}}\stopmodeset <macro> \22>:coverpage ...,**de,**de-de,**de-at,**de-ch] {\hiddentitle {[Bildtitelseite]}}\stopmodeset }\doifdefined {hiddentitle}{\CoverPageTitle } \setupbodyfont [svb]{\scale [width=.35\textwidth ]{\sc \getvariable {coverpage}{author}}}\vfill \scale [width=\textwidth]... \setuppapersize[A6] Would it be possible that LMTX adds the undefined command at the end of the tex error line? I mean something similar to: tex error > tex error on line 9 in file cont-yes.mkiv: Undefined control sequence (vskivskip) It would help a lot to detect wrong commands. Many thanks for your help, Pablo -- http://www.ousia.tk

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store data in the first run for later runs?
by Pablo Rodriguez 06 Nov '20

06 Nov '20

Dear list, I have the following sample: \starttext \startTEXpage[offset=1em] \startmode[*first] \startluacode io.write(" What’s your name? ") document.user_name = io.read() document_data = { "\\def\\UserName{" .. document.user_name .. "}" } io.savedata(tex.jobname.."_document-tmp-data.txt", document_data) \stopluacode \stopmode \input{\jobname_document-tmp-data.txt} \UserName, nice to meet you. \stopTEXpage \stoptext This prompts user input on the first run, but I have to save to an external file to be able to read it in next runs. Just in case you might wonder, the actual code requires "--purgeall". Is there no way to save that in the .tuc file for later runs? I have tried https://wiki.contextgarden.net/System_Macros/Key_Value_Assignments#Multi-pa… (as Aditya suggested to me), but runs after the first one see to empty the data in the Lua table. Adapting a sample from the wiki: \starttext \definedataset[somedataset] \startmode[*first] \setdataset[somedataset][wantscake=yes, wantsdeath=no] \stopmode Do you want cake? \datasetvariable{somedataset}{1}{wantscake}.\\ BTW, do you want death? \datasetvariable{somedataset}{1}{wantsdeath}. \stoptext I wonder whether there is no cleaner way to do this. Many thanks for your help, Pablo -- http://www.ousia.tk

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math symbol for "is an element of"
by type＠projectivespace.com 06 Nov '20

06 Nov '20

A quick question for the ConTeXt mailing list: Other than typing it directly (or cutting and pasting it), how does one get the character ∈ (in case this gets garbled in emailing, this is supposed to be the mathematical symbol that looks more or less like an epsilon, and which is the mathematical symbol for "is an element of" a set). \showmathfontcharacters gives the following information about it: U+02208: ∈ ∈ element of width: 524262, height: 426798, depth: 33798, italic: 0 mathclass: relation, mathname: in I'm not completely sure how to read this information, but if I read it correctly, perhaps this character should be gotten with \in. Also, the Basic Math page of the Wiki (https://wiki.contextgarden.net/Math/basic) states that you should be able to type this character with "\in". But that doesn't work (even inside a formula), since \in is used for references in ConTeXt. And in fact the link on the Basic Math page for \in takes you to the explanation of \in as used for ConTeXt references. This is a very common character in mathematics, so I wanted to ask: what is the recommended way to type this character? (I'm hoping to avoid having to cut and paste the character into the document every time I want to use it. And I don't have a utf enabled keyboard that would allow me to type this symbol readily from the keyboard.) Thanks in advance, Sciurus

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Re: [NTG-context] index issues
by Henning Hraban Ramm 06 Nov '20

06 Nov '20

> Am 06.11.2020 um 12:22 schrieb Henning Hraban Ramm <texml(a)fiee.net>: > > (2) > Page/column breaking is odd in that the preferred breaking point seems to be one entry too early, i.e. the last entry of one letter end up in the next column and the previous column is one line too short. > It doesn’t change with balance=yes/no. If one of the \index{D...} lines is commented in the following example, the last D entry goes into the second column, the columns get balanced, and the second line of the last K entry is broken to the next page. If you uncomment that line, it looks as intended (no balancing, full left column). What’s wrong? Can I influence this e.g. with penalties? (Screenshots were too big...) Hraban \setuppapersize[A6] \setupbodyfont[16pt] \setupregister[index][balance=no,indicator=no] \showframe \starttext %\setinjector[index][10][{\column}] %\showinjector[index] % ERROR! \index{Danold} \index{Drum} %\index{Dapper} % uncomment to test \index{Kankra} \index{Kookaburra} \placeregister[index][criterium=all] \page \startregister[index][test]{Knuth} \input tufte \index{Donald}\index{Drom}\index{Divine} \page\index{Dummy} \input knuth \index{Donald}\index{Dom}\index{Dunno} \page \stopregister[index][test] \input darwin\index{Darwin} \page \dorecurse{5}{ \input knuth \index{Knuth}\index{Donald}\index{Dixit} \page\index{Knothing} } \stoptext

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index issues
by Henning Hraban Ramm 06 Nov '20

06 Nov '20

Hello again, still struggling with indexes. (1) \setupregister’s before and after go around the indicator. e.g. \setupregister[][indicator=no,after={XX}] never shows that XX, since after is only used after the indicator, while before also works without. I was hoping for a hook at the end of a section (to add \testcolumn, \blank etc. to work around no.2). Is there any? (2) Page/column breaking is odd in that the preferred breaking point seems to be one entry too early, i.e. the last entry of one letter end up in the next column and the previous column is one line too short. It doesn’t change with balance=yes/no. E.g. p.1 A A A A A A B A B A B A <<<< !? p.2 B C B C B C C C C D C D (3) (How) can I otherwise influence page/column breaking? E.g. - always keep multi line entries together - break before or after some entry (4) Is it possible to combine entries from \index and \startregister[index]? If I use \start/stopregister and have the same index entry within the range or on the same page, I get duplicate pages or page ranges, like 10-12 from \startregister and additionally 11, 12-13 from \index entries, makes at the moment 10-12, 11, 12-13 instead of just 10-13. I’ll prepare MWEs, but maybe you can answer some of these without? Thank you in advance, Hraban

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lmt_axis
by thierry horsin 06 Nov '20

06 Nov '20

Dear list, I am currently trying to test the lmt_axis exemple in luametafont.pdf. I am working on linux/ubuntu. The exemple leads to compilation errors below. The current version of context that I am using is from last july. I have succeeded with other examples, e.g. surfaces or lmt_text Any insight about this issue ? Many thanks. Thierry metapost log > >> unknown path p metapost log > >> 0 metapost log > ! Equation cannot be performed (unknown path=numeric). metapost log > <to be read again> metapost log > (path) metapost log > <to be read again> metapost log > ; metapost log > <for(1)> ...nts"(getparameterdefault"close"false); metapost log > draw.p.withcolor.c;pushpar... metapost log > <argument> ...i;popparameters;popparameters;endfor metapost log > ;popparameters;fi;popparam... metapost log > metapost log > image->...ture;currentpicture:=nullpicture;(TEXT3) metapost log > ;currentpicture.if.str(SUF... metapost log > metapost log > lmt_do_axis->...r;popparameters;fi;popparameters;) metapost log > xyscaled(getparameter"axis... metapost log > <scantokens> lmt_do_axis metapost log > metapost log > <*> ...gment 1", "segment 2", "segment 3" } ] }, ] metapost log > ; ; metapost log > close source > level 2, order 3, name './CoursCSC214.tex' pages > flushing realpage 78, userpage 131, subpage 78 close source > level 1, order 3, name 'cont-yes.mkiv'

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specify column-width, with option=stretch
by Peter Münster 06 Nov '20

06 Nov '20

Hi, I would like to specify the column-width of the first column to 5mm: --8<---------------cut here---------------start------------->8--- \starttext \setupTABLE[textwidth=99mm, option=stretch] \setupTABLE[c][each][align={lohi, middle}] \setupTABLE[c][1][height=5mm, style=\tfxx] \framed[width=5mm, offset=0pt]{5} \bTABLE \bTR \bTD[nr=2] \setupinterlinespace[1.8ex] 1\\2\\3 \eTD \bTD bla \eTD \bTD blablabla \eTD \eTR \bTR \bTD[nc=2] blabla \eTD \eTR \eTABLE\par \framed[width=99mm, offset=0pt]{99} \stoptext --8<---------------cut here---------------end--------------->8--- How could I do that please? TIA for any hints, -- Peter

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Why is the textarea not centered by default?
by Sylvain Hubert 05 Nov '20

05 Nov '20

Dear List, \starttext \showframe \showsetups \stoptext This minimal example without further configuration shows that the default value for backspace, textwidth and paperwidth are 2.5cm, 15cm, 21cm resp., which means that the textarea is horizontally 0.5cm off the center by default, and one can indeed see a clear extra margin on the right side. This seems weird but I'm no expert of typesetting, so does anyone know why it has been set like that? Thanks. Best, Sylvain

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