October 2021 - ntg-context - NTG Mailing Lists

Generating HTML
by Hans Åberg 11 Oct '21

11 Oct '21

I would want to generate HTML, but in the example below, "html-test.tex", the index does not show in the file "html-test-export/html-test-div.html", and the source file \index{…}, gets in the HTML a black triangle. The index and links work fine in "html-test.pdf", though. — html-test.tex — \definefontfamily [mainface][math][stix] \setupbodyfont [mainface,10pt] \setupinteraction[state=start, click=yes, focus=standard, color=darkblue] \setupbackend[export=yes] % Exporting HTML/XML \defineregister [index] \setupregister [index] [indicator=no] \startchapter[title={Introduction}] Foobar\index{foobar} out of working order. \startbodymatter Foo\index{foo} or bar\index{bar}. \startbackmatter \completeindex \stopbackmatter \stoptext —

1 0

Re: [NTG-context] Making metafun pictures fainter (shading, uncolored clash)
by Gavin 11 Oct '21

11 Oct '21

Hi List, I made good progress producing fainter pictures in metafun. Here is a uniformly accelerated cow in the style of my book. I abandoned transparency, since I actually don’t want to see through anything. I am using uncolored to get the fade. It works great with a picture that is made with fill and draw, but it doesn’t work with shading. The example below has a flat disk and a round ball. The disk looks fine, but the shaded ball is not surviving the application of inverted / uncolored. \startMPinclusions picture disk, ball; disk := image( fill fullcircle scaled 1cm withcolor .4white; draw fullcircle scaled 1cm withpen pencircle scaled 0.8pt ;); ball := image( fill fullcircle scaled 1cm withshademethod "circular" withshadecenter (.25,.25) withshadecolors (.8white, black); draw fullcircle scaled 1cm withpen pencircle scaled 0.8pt ;); \stopMPinclusions \startMPpage draw inverted (disk uncolored .1white) ; draw inverted (disk uncolored .2white) shifted (0.25cm,0) ; draw inverted (disk uncolored .5white) shifted (1cm,0) ; draw disk shifted (2.25cm,0) ; draw inverted (ball uncolored .1white) shifted (0, -2cm) ; draw inverted (ball uncolored .2white) shifted (0.25cm, -2cm) ; draw inverted (ball uncolored .5white) shifted (1cm, -2cm) ; draw ball shifted (2.25cm, -2cm) ; \stopMPpage Same result in LMTX and MkIV. (ConTeXt ver: 2021.09.17 10:01 LMTX fmt: 2021.9.21 int: english/english) I’m pretty happy with this uncolored trick, and will be even happier if I can get it to work with the shadings. Any suggestions? Gavin

2 3

Acrobat doesn’t read imported metadata
by Pablo Rodriguez 11 Oct '21

11 Oct '21

Dear list, I have the following sample: \starttext \startluacode function document.transfer_metadata(name) local main_doc = lpdf.epdf.load(name) lpdf.addtoinfo("Title", lpdf.unicode(main_doc.Info.Title), lpdf.string(main_doc.Info.Title)) lpdf.addtoinfo("CreationDate", lpdf.string(main_doc.Info.CreationDate)) lpdf.addtoinfo("ModDate", lpdf.string(main_doc.Info.ModDate), main_doc.Info.ModDate) lpdf.epdf.unload(name) end \stopluacode \unexpanded\def\TransferMetadata#1% {\ctxlua{document.transfer_metadata("#1")}} \startTEXpage[offset=1em, align=center] \ssbf metadatos\\importados \TransferMetadata{metadata.pdf} \stopTEXpage \stoptext Being the sample file https://pdf.ousia.tk/metadata.pdf, Acrobat cannot display the imported title or either the creation or modification dates. What am I missing to make Acrobat display the imported metadata? Many thanks for your help, Pablo -- http://www.ousia.tk

2 2

Short forms and abbreviations in bibliography
by Joey McCollum 11 Oct '21

11 Oct '21

Hi, It is a common practice to use short forms of titles for bibliographic entries after they are cited the first time. Another practice is to use abbreviations for journal names and book series (generally for citations in the text, but possibly also in the references list), with a separate "List of Abbreviations" provided to cross-reference the abbreviations and full names. I think that these practices could be accommodated with multiple bibliographies that contain short and long forms for corresponding entries, but I wanted to ask: is there a simpler or preferred way to do this in ConTeXt? To illustrate what I mean, the biblatex-sbl package ( https://github.com/dcpurton/biblatex-sbl) which implements the SBL citation style for (Xe)LaTeX, handles this using additional fields like "shorttitle," "shortjournal," and "shortseries," so for the BibTeX-style bibliographic entry @book{Blau2010, author = {Joshua Blau}, title = {Phonology and Morphology of Biblical Hebrew}, shorttitle = {Phonology}, series = {Linguistic Studies in Ancient West Semitic}, shortseries = {LSAWS}, volume = {2}, location = {Winona Lake, IN}, publisher = {Eisenbrauns}, year = {2010} } the initial in-text citation (in SBL style) would look something like Joshua Blau, *Phonology and Morphology of Biblical Hebrew*, LSAWS 2 (Winona Lake, IN: Eisenbrauns, 2010), while subsequent in-text citations would look like Blau, *Phonology*. A separate list of abbreviations would then list "LSAWS" alongside "Linguistic Studies in Ancient West Semitic" (and likewise for other journal/series abbreviations). Thank you! Joey

4 11

composing commands
by Hans Hagen 11 Oct '21

11 Oct '21

Hi, As I'm going over the commands in lmtx, I wonder if we should keep \c \d \k \r \u \v \" \' \` \^ etc ... the ones that make 'composed characters'. I think that anyone who needs them uses utf . They can be in (say) m-oldschool.mkxl or so. Objections? Hurt feelings? Sentiments? Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------

8 19

SyncTeX does not work with Zathura
by Cezary Drożak 11 Oct '21

11 Oct '21

Hello, I have been trying to get SyncTeX to work with ConTeXt and Zathura, but nothing seems to work. I created a simple `hello.mklx` file and ran `context --synctex=-1 hello.mklx`. Then I launched Zathura with `zathura -x "nvr -cc \"call vimtex#view#reverse_goto(%{line}, '%{input}')\" --nostart" hello.pdf`. When I clicked "Hello, world!" while holding a control key it printed the following error to console: ``` (org.pwmt.zathura:80241): GLib-CRITICAL **: 15:49:12.359: g_variant_new_string: assertion 'string != NULL' failed warning: Failed to obtain data via SyncTeX or data is incomplete. ``` I am attaching the `hello.mklx`, `hello.pdf` files and the generated `hello.synctex` file. I am getting the same result with `--synctex=1`. Regards, Cezary Drożak

2 4

ConTeXt's equivalent of raisebox
by noib3 11 Oct '21

11 Oct '21

How can I make vertical microadjustments to individual characters in ConTeXt? In LaTeX I would do it with ``` \documentclass{article} \begin{document} \raisebox{-1pt}{f}oo \end{document} ``` however the following doesn't work ``` \starttext \raisebox{-1pt}{f}oo \stoptext ```

3 2

undefined command in current latest
by Alexandre Christe 11 Oct '21

11 Oct '21

Update: after updating Context again today the issue is gone.

1 0

undefined command in current latest
by Pablo Rodriguez 10 Oct '21

10 Oct '21

Dear list, I have the following sample: \setupheadertexts[{\getmarking[chapter]}] \starttext \chapter{Chapter} \stoptext It compiles perfectly fine with MkIV from 2021.10.08 20:18, but its LMTX version triggers the following error message: Undefined control sequence \??markingfilter Previous LMTX version compiled just fine. I think it might be a bug. Many thanks for your help, Pablo -- http://www.ousia.tk

1 0

Making metafun pictures fainter
by Gavin 10 Oct '21

10 Oct '21

Hi list, I’m trying to produce figures like this, showing motion as a series of snap-shots, with the earlier moments more faint. Here are three examples of metafun code using transparency and “decorated". \startMPinclusions picture ball; ball := image( draw fullcircle scaled 1cm withshademethod "circular" withshadecenter (.25,.25) withcolor "lightgray" shadedinto black; draw fullcircle scaled 1cm withpen pencircle scaled 0.8pt;); \stopMPinclusions \starttext \startMPpage draw decorated (draw ball) withtransparency (1,.2); draw decorated (draw ball shifted (1cm, 0cm)) withtransparency (1,.4); draw decorated (draw ball shifted (4cm, 0cm)) withtransparency (1,.6); draw ball shifted (9cm, 0cm); \stopMPpage \startMPpage draw decorated (draw ball) withtransparency (1,.2); draw decorated (draw ball shifted (0.25cm, 0cm)) withtransparency (1,.4); draw decorated (draw ball shifted (1cm, 0cm)) withtransparency (1,.6); draw ball shifted (2.25cm, 0cm); \stopMPpage \startMPpage draw decorated (draw ball) withtransparency (1,.2); filldraw fullcircle scaled 1cm withcolor white withpen pencircle scaled 0.8pt shifted (0.25cm, 0cm); draw decorated (draw ball shifted (0.25cm, 0cm)) withtransparency (1,.4); filldraw fullcircle scaled 1cm withcolor white withpen pencircle scaled 0.8pt shifted (1cm, 0cm); draw decorated (draw ball shifted (1cm, 0cm)) withtransparency (1,.6); draw ball shifted (2.25cm, 0cm); \stopMPpage \stoptext Transparency alone does a good job if the objects don’t overlap (first example). If they do overlap, it’s kind of a mess (second example). I get a much better result if I put a white circle behind each transparent ball so that they look lighter without showing the earlier objects through them (third example). However, that solution is going to be difficult for more complex shapes. I tried drawing the shape using “redecorated () withcolor white", to draw the white background object, but only the outline appears white. The circular shading disappears altogether, leaving the ball fill area transparent. I also tried to use something like “softened .8” but could not get that to produce any output. Any ideas? Thanks! Gavin

1 0