May 2021 - ntg-context - NTG Mailing Lists

Double-sided layer
by Huseyin Özoguz 06 May '21

06 May '21

Hello context-community, I have an image as a layer and want it to place on every page of a book with some offset. My minexample: \setlayer[mybg] [hoffset=2cm, voffset=0.2cm, doublesided=yes] {\framed[frame=off, width=2cm, height=1cm]{\externalfigure[bilder_bearbeitet_png/32.png][width=\textwidth]}} That works in principle, but I want the hoffset to be relative to the cutspace/backspace: different on right and left page, such that the layer is set equally on every page relative to the textbody. In the example above I use "doublesided=yes", but that has no effect. How to achieve proper double-sided behavior? Thank you. Huseyin

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Bug in \framed and \inframed
by Johann Birnick 06 May '21

06 May '21

There is a bug with \framed and related commands: If this is the first object in a line, a linebreak is inserted! See the following example: \starttext This \inframed{works} fine. \inframed{But} this not. \stoptext Thank you, Johann

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A Bug in lmt_shade
by Keith McKay 06 May '21

06 May '21

Hi all, I think a bug has appeared in lmt_shade in the latest upload. MWE below. Thanks Keith McKay %%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \setuppapersize[A4,landscape][A4,landscape] \starttext \startMPpage StartPage; width := PaperWidth ; height := PaperHeight ; unit := cm ; definecolor [ name = "MyColor1", r = 0.781, g = 0.5, b = 0.5 ] ; definecolor [ name = "MyColor3", r = 1, g = 1, b = 0.7983 ] ; draw lmt_shade [ path = unitsquare xscaled width yscaled height, direction = "up", alternative = "linear", colors = { "MyColor1", "MyColor3" }, ] ; StopPage; \stopMPpage \stoptext %%%%%%%%%%%%%%%%%%%%%%%%%%% %%% Console Output %%% system > system > ConTeXt ver: 2021.05.05 19:29 LMTX fmt: 2021.5.6 int: english/english system > < snip > metapost > initializing instance 'metafun:1' using format 'metafun' and method 'default' metapost > loading 'metafun' as 'metafun.mpxl' using method 'default' metapost > initializing number mode 'scaled' metafun > log > metafun > log > error: An expression can't begin with 'right delimiter' metafun > log > metapost > log > <inserted text> metapost > log > 0 metapost > log > <to be read again> metapost > log > ) metapost > log > <argument> ...enter_b,alternative,s;string.color_a,color_b,alternative,s;pair.center_a,center_b;alternative:=getparameter"alternative";mfun_with_shade_method_analyze(getparameter"path") metapost > log > ;domain_min:... metapost > log > image->begingroup.save.currentpicture;picture.currentpicture;currentpicture:=nullpicture;(TEXT3) metapost > log > ;currentpicture.if.str(SUFFIX2)<>"":shifted(mfun_labxf(SUFFIX2)*lrcorner.p+mfun_labyf(SUFFIX2)*ulcorn... metapost > log > lmt_do_shade->...ve="circular":draw.fullcircle.scaled(radius_a)shifted.center_a.dashed.evenly;draw.fullcircle.scaled(factor*radius_b)shifted-center_b.dashed.evenly;fi.fi.popparameters;) metapost > log > endgroup metapost > log > <scantokens> lmt_do_shade metapost > log > metapost > log > <*> ...3", r = 1, g = 1, b = 0.7983 ] ; draw lmt_shade [ path = unitsquare xscaled width yscaled height, direction = "up", alternative = "linear", colors = { "MyColor1", "MyColor3" }, ] metafun > log > metafun > log > I'm afraid I need some sort of value in order to continue, so I've tentatively inserted '0'. metafun > log > metapost > log > ; StopPage; ; metapost > log >

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setupalign[line]/setupalign[height] break \testpage
by denis.maier＠ub.unibe.ch 06 May '21

06 May '21

Hi everyone, I've recently asked this question: https://www.mail-archive.com/ntg-context@ntg.nl/msg98293.html To reiterate: Is there any way to add a \vfill on a page immediately before a section heading? On the mailing list I then found a possible solution : \setuphead[section][aftersection=cmd] So, I thought \testpage or \checkpage here could be a solution. However, the vertical stretching algorithm seems to interfere with \testpage in some way as the example below tries to illustrate. Can anyone confirm this? Is this a bug or am I missing something? ======================== \setuppapersize[A5][A5] % Activate this and \testpage stops working %\setupalign[height] %\setuptolerance[vertical,stretch] %\setupinterlinespace[ % stretch=0.001, % shrink=0.001, % ] % \showframe \starttext \section{Section} \input knuth\par \input knuth\par \input knuth\par \input ward \input ward \testpage[20] % This stops working as soon as vertical stretching is active \input ward \section{Section} \input knuth\par \stoptext ======================== Best, Denis

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environments in texmf-local?
by jbf 06 May '21

06 May '21

Hi list, A query: since we can place private (or any) modules in the texmf-local subdirectory and call them from anywhere, would it be a misuse to also place some environment setups there as well? It certainly makes it easy to call them from wherever, and saves having to reorganize my file and directory structure. Julian

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new upload
by Hans Hagen 05 May '21

05 May '21

Hi, I uploaded a new lmtx version. The update mostly concerns part of the low level mp-tex interface, a side effect of updating some mechanisms (one of which MF currently is extending). Hopefully it won't break users code that uses low level mp-tex interface features but anyway, if needed, adapting is not hard and gives nicer code, as in: \startuseMPgraphic{foo1} fill fullcircle scaled \MPvar{size} withcolor \MPvar{color} ; \stopuseMPgraphic which now becomes: \startuseMPgraphic{foo2} fill fullcircle scaled mpvard("size") withcolor mpvars "color" ; \stopuseMPgraphic or even can be: \startuseMPgraphic{foo3} fill fullcircle scaled mpvar "size" withcolor mpvar "color" ; \stopuseMPgraphic where numerics, dimensions and strings are figured out automatically: \newdimen\mydimen \mydimen=1cm \useMPgraphic{foo1}{size=\mydimen,color=red} \useMPgraphic{foo2}{size=2\mydimen,color=green} \useMPgraphic{foo3}{size=3cm,color=blue} So it (still) works (even better) with registers and such. The fundamental difference is that \MPvar pushes the value of a variable from tex to mp (after some analysis) and that mpvar pulls the value from the mp end (with some help of the lua interface). New is that we have inheritance \setupMPvariables[foo3][size=1cm,color=yellow] \useMPgraphic{foo3} \setupMPvariables[foo1][foo3][size=2cm] \useMPgraphic{foo1} Another experiment, already active on my machine for a while, is this: \enabledirectives[metapost.text.fasttrack] which can be a bit more efficient wrt texts. Another pending change is getting rid of colorhack, which you can try with: \enableexperiments[disablecolorhack] Yet another (already mentioned) experiment users can (should) play with is \enableexperiments[simplegroups] And of course there are: \enableexperiments[fonts.compact] and the less fundamental (and more experimental too): \enabledirectives[fonts.injections.method=advance] At some point compact mode can become the default which then can trigger some low level code removal ... of course some sentimental issue because throwing away code that has been around for a long time, has evolved to be efficient and work well, can hurt but in the end nicer new code wins. Finally I want to remember overload protection: \enabledirectives[overloadmode=warning] or even \enabledirectives[overloadmode=error] just in case you want to check if your own macros clash or harm the system. 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 -----------------------------------------------------------------

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sqrt does not align properly
by Benny Schurig 05 May '21

05 May '21

Peak of the root ends at baseline, but only in some cases: \starttext $\sqrt{2}$ \qquad $\sqrt{a^2+b^2}$ \qquad $\sqrt{a^2-b^2}$ \stoptext In this example only \sqrt{a^2+b^2} works as expected [ConTeXt ver: 2021.04.29 23:09 LMTX fmt: 2021.5.4] Typesetting in ConTeXt live is correct. Benny

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issue with Public Sans
by Pablo Rodriguez 04 May '21

04 May '21

Dear listt, I have problems with current latest (from 2021.04.29 23:09) to get proper character spacing using Public Sans (https://public-sans.digital.gov/) \definefontfamily[mainface][rm] [Public Sans] \setupbodyfont[mainface] \starttext \doloopoverlist{\rm,\it,\bf,\bi} {\startpar\recursestring\input zapf\stoppar} \stoptext Could anyone confirm this? I wonder whether the typeface itself is missing something. Many thanks for your help, Pablo -- http://www.ousia.tk

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conditionally add \vfill before section if at end of page
by denis.maier＠ub.unibe.ch 04 May '21

04 May '21

Hi, I'm still playing/struggling with vertical glue to have pages of a constant height. The following settings give reasonable results: ============= \setuppapersize[A5][A5] \setupalign[line] \setuptolerance[vertical,stretch] \setupinterlinespace[ stretch=0.001, shrink=0.001, ] \showframe \starttext \section{Section} \input knuth\par \input knuth\par \input knuth\par \input ward \input ward \input ward %\vfill % can a \vfill be added automatically here? \section{Section} \input knuth\par % here we don't have a \vfill as this is on the middle of the page \section{Section} \input knuth\par \stoptext ====================== However, I don't want the stretching if the next page starts with a section heading. Is there any way to add a \vfill on a page immediately before a section heading? \doifatpageborder \doifatpagestart or something similar ? Thanks for you help, Denis

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Syriac (Estrangelo Edessa) query
by Alan Bowen 04 May '21

04 May '21

I am trying to set text in the Syriac font Estrangelo Edessa. Right now, I have the following (taken for the wiki): \definefontfeature[semitic-complete] [mode=node,analyze=yes,language=dflt,ccmp=yes, autoscript=position,autolanguage=position, init=yes,medi=yes,fina=yes,isol=yes, mark=yes,mkmk=yes,kern=yes,curs=yes, liga=yes,dlig=yes,rlig=yes,clig=yes,calt=yes] \definefontfeature[arabic] [semitic-complete] [script=arab] \definefontfeature[syriac] [arabic] [fin2=yes, fin3=yes, med2=yes] \definefallbackfamily[mainface][rm][estrangeloedessa] [range={syriac}, features=syriac] \definefontfamily[mainface][rm][STIX Two Text] [protrusion=quality, expansion=quality, mode=node, force=yes, features={default, f:oldstyle}] \setupbodyfont[mainface, 20pt] \starttext Hello world! { \setupalign[r2l] ܐܝܟ ܟܝܢܐ ܕܐܐܪܣ ܡܲܥܕܢܘܬܗܘܢ ܘܡܲܥܒܿܕܝܢ ܩܪܒ̈ܐ ܘܚܣܡܐ ܠܗܠܝܢ } \stoptext Though the file compiles, the Syriac text does not look the same as the source text (Estrangelo Edessa unicode). See attachment. Any guidance in fixing this will be gladly received. Alan Disclaimer: I do not know Syriac.

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