September 2019 - ntg-context - NTG Mailing Lists

mathring circle above a letter
by Otared Kavian 14 Sep '19

14 Sep '19

Hi all, The \mathring command puts a small circle above a letter, but in some fonts (namely Lucida OT) that circle is too small. So thanks to a hint by Hans and Wolfgang some years ago I use the following definition which works fine when used alone. But in maths, one needs sometimes to use it with the command \overline (or \overbar) and the result is not nice. Can someone tell me please whether it is possible to modify the \mathring command so that th ecircle is a little bit larger, or the one I define below as \interior in order to have a correct result (more clearly said: I would like the small circle to be put above the bar which is itself above the A in $\interior{\overline{A}}$). Thanks for any help: OK %%% begin mathring-interior.tex \setuppapersize[A5][A5] \definemathstackers[MySymbol] [voffset=-1.2\mathexheight, hoffset=\zeropoint, mathclass=ord, topoffset=.3\mathemwidth, % poor man's italic correction middlecommand=\mathematics] %\define[1]\interior{\mathover[MySymbol]{"2218}{#1}} %2218 U+00B0 \define[1]\interior{\mathover[MySymbol]{176}{#1}} %2218 U+00B0 \starttext The interior of a set $A$ is denoted by $\interior{A}$. The interior of a set $A$ is denoted by $\mathring{A}$. The closure of the interior is $\overline{\interior{A}}$. Beware $\overline{\interior{A}} \neq \interior{\overline{A}}$. (This is not nice\dots). Beware $\overline{\mathring{A}} \neq \mathring{\overline{A}}$ \stoptext %%% end mathring-interior.tex

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expansion problem: random location
by Henning Hraban Ramm 14 Sep '19

14 Sep '19

Hi, in an example document I’m trying to get pictures of random size and placement. Unfortunately the expansion is over my head: %%%%%%%%%%%%%%%%% \useMPlibrary[dum] \usemodule[visual] \startluacode local locations = { 'top', 'bottom', 'left', 'right', } function RandomLocation() context(locations[math.random(1,#locations)]) end \stopluacode \newdimen\PicWidth \PicWidth=\textwidth \define[1]\Blindbild{ \getrandomnumber\imgH{1}{9} \PicWidth=\textwidth \doif{#1}{left}{\PicWidth=.4\textwidth} \doif{#1}{right}{\PicWidth=.4\textwidth} \startplacefigure[location={#1},title={#1 \fakewords{3}{20}}] \externalfigure[place #1][width=\PicWidth,height=\dimexpr\textheight * \imgH / 10 \relax] \stopplacefigure } \starttext \dorecurse{3} {\chapter{\fakewords{5}{10}} \dorecurse{3} {\dorecurse{3}{\fakewords{50}{100}\endgraf} \Blindbild{\ctxlua{RandomLocation()}} % expansion!? \dorecurse{2}{\fakewords{50}{100}\endgraf}}} \stoptext %%%%%%%%%%%%%%%%%% So the parameter of \Blindbild should get generated at the time of calling the macro, so that #1 stays the same within the macro. In this state the Lua function gets called at every use of #1. Greetlings, Hraban --- https://www.fiee.net http://wiki.contextgarden.net https://www.dreiviertelhaus.de GPG Key ID 1C9B22FD

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variable fonts
by Ulrike Fischer 13 Sep '19

13 Sep '19

In https://mailman.ntg.nl/pipermail/ntg-context/2017/088343.html is some code to use variable fonts. I don't have the fonts but tried it (in a current context mkiv) with "bahnschrift" instead which as far as I could find out should be a variable font too, but can't see any effect. Is the code still meant to work? -- Ulrike Fischer https://www.troubleshooting-tex.de/

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Math \not
by Rogers, Michael K 12 Sep '19

12 Sep '19

In plain TeX you can get a slash through $\equiv$ with $\not\equiv$. When I do the same in ConTeXt, the slash next to the $\equiv$. Is there a way to get a not-equivalent sign in ConTeXt? Thanks, - Michael \starttext $\not\equiv$ \stoptext ________________________________ This e-mail message (including any attachments) is for the sole use of the intended recipient(s) and may contain confidential and privileged information. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this message (including any attachments) is strictly prohibited. If you have received this message in error, please contact the sender by reply e-mail message and destroy all copies of the original message (including attachments).

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doifsomething vs iffirstargument in TABLE?
by Jon Wong 12 Sep '19

12 Sep '19

Hi all, If I use iffirstargument, the optional (first argument) is always seen as false. If I use doifsomething, it works, but the “else” part is never executed when it should. MWE: \starttext % \def\MyRow{\dosingleempty\doMyRow} % \def\doMyRow[#1]#2#3#4#5{% % \bTR \bTD #2 \eTD % % \iffirstargument % \bTD Replaced! \eTD % % \else % \bTD #3 \eTD % % \fi % \bTD #4 \eTD \bTD #5 \eTD \eTR % } \def\MyRow{\dosingleempty\doMyRow} \def\doMyRow[#1]#2#3#4#5{% \bTR \bTD #2 \eTD % \doifsomething{#1} {\bTD Replaced! \eTD }% {\bTD #3 \eTD }% \bTD #4 \eTD \bTD #5 \eTD \eTR } \bTABLE \bTABLEbody \MyRow{A}{B}{C}{D} \MyRow[optional]{A}{B}{C}{D} \eTABLEbody \eTABLE \stoptext Regards Jon

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Loading OTF fonts?
by Jon Wong 12 Sep '19

12 Sep '19

Hi all, I tried following this tex.sx answer: https://tex.stackexchange.com/questions/453143/noto-cjk-font-not-usable-wit… <https://tex.stackexchange.com/questions/453143/noto-cjk-font-not-usable-wit…> Can someone give me an explanation of what I did wrong? Hit me with all the technical concepts. I’m competent with fontspec on XeTeX. Step 1: Copy NotoSerifCJKsc-Regular.otf to ~/context/tex/texmf-local/fonts Step 2: Run `mtxrun --script font --convert NotoSerifCJKsc-Regular.otf' Step 3: Run `mtxrun —script fonts --reload’ Step 4: Run `context test.tex’ The error: fonts > defining > unknown font 'NotoSerifCJKsc-Regular', loading aborted Regards Jon

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colors in MetaPost
by Henning Hraban Ramm 11 Sep '19

11 Sep '19

Hi, I’m trying to get a linear shade in the background of my presentation. But it seems like MetaPost can’t handle my self-defined colors: \definecolor[VerlaufVon][c=75,m=5,y=95,k=60] \definecolor[VerlaufNach][c=88,m=95,y=5,k=60] \startuniqueMPgraphic{Verlauf} % old method, also doesn’t work % path p ; % p := unitsquare xscaled \overlaywidth yscaled \overlayheight ; % linear_shade(p,6,\MPcolor{VerlaufVon},\MPcolor{VerlaufNach}) ; fill fullsquare xyscaled (\overlaywidth,\overlayheight) withshademethod "linear" withshadevector (0.5,2.5) %withshadedirection shadedup withshadecolors ("VerlaufVon", "VerlaufNach") ; \stopuniqueMPgraphic \defineoverlay[verlaufen][\useMPgraphic{Verlauf}] \setupbackgrounds[paper][background={verlaufen}] \starttext \strut \stoptext The background consists of a blue and a green area instead of a shade. While testing I sometimes got a few more stripes in the top and bottom area, can’t reproduce any more. I also tried RGB and hex (HTML) definitions. Predefined colors work. According to the MetaFun manual, either \MPcolor{name} or just "name" should work. What’s wrong? Greetlings, Hraban --- https://www.fiee.net http://wiki.contextgarden.net https://www.dreiviertelhaus.de GPG Key ID 1C9B22FD

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context (lmtx) segfaults on x86_64 linux
by Vladimir Lomov 11 Sep '19

11 Sep '19

Hello, today I updated lmtx and on simple $ context --version I get segfault (in the same time luametatex --version works fine). Running under gdb shows me that the problem might be in one of 'realloc' calls. The context from Context Suite (mkiv) works fine. P.S. I tested on two systems, both runs Archlinux x86_64. --- WBR, Vladimir Lomov -- Carelessly planned projects take three times longer to complete than expected. Carefully planned projects take four times longer to complete than expected, mostly because the planners expect their planning to reduce the time it takes.

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\date is calculated wrong
by Martin Althoff 11 Sep '19

11 Sep '19

Hi all, the \date is output wrong. Whatever value is given for d= I get the 11th. That is todays date. Not sure what would happen tomorrow Thanks for any fix suggestions. \starttext \date[d=16,m=9,y=2019][weekday, day,{. }, month, year] \stoptext

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Pb with tikz, \pdfsavepos and friends
by Jean-Philippe Rey 10 Sep '19

10 Sep '19

Dear all, I just downloaded the last ConTeXt beta (ConTeXt ver: 2019.09.09 13:44 MKIV beta) and encountered a problem with pgf/tikz. Here a minimum failing example : ================= \usemodule[tikz] \starttext \starttikzpicture[remember picture] \stoptikzpicture \stoptext ================= which produces the following error (excerpt from the log file, see complete log attached) ================= tex error > tex error on line 4 in file /Users/jprey/Projets/ConTeXt/bug-savepos.tex: ! Undefined control sequence \pgfsys@markposition #1->\pdfsavepos \edef \pgf@temp {#1}\expandafter \pgfut... \endpgfpicture ...ys@markposition {\pgfpictureid } }\fi \ifdim \pgf@picmaxx =... \stoptikzpicture ...st@from@global \endpgfpicture \endgroup l.4 \stoptikzpicture ================= My previous ConTeXt version from September 2018 works fine with the same example. I searched the mailing list archives and found a thread from January 2016 pertaining to the same problem. The workaround given by Hans works for me : \let \pdfsavepos \savepos \let \pdflastxpos \lastxpos \let \pdflastypos \lastypos I checked the pgf versions in my ConTeXt installations from 20180913 and 20190909, they are the same : 3.0.1. So I suppose that the change comes from ConTeXt itself, that’s why I report the problem here. Regards, -- Jean-Philippe Rey jean-philippe.rey(a)centralesupelec.fr 91192 Gif-sur-Yvette Cedex - France Empreinte PGP : 807A 5B2C 69E4 D4B5 783A 428A 1B5E E83E 261B BF51

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