- ntg-context - Mailing Lists

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 >

2 1

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

1 0

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

2 1

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 -----------------------------------------------------------------

1 0

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

1 0

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

3 3

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

1 0

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.

2 1

installing luametatex query
by Alan Bowen 03 May '21

03 May '21

I have re-installed the latest luametatex (macOS) following the directions on the wiki ( https://wiki.contextgarden.net/Installing_ConTeXt_LMTX_on_MacOS) Though luametatex --version mtxrun --generate are successful, context --version context --make --all gets mtxrun | unknown script 'mtx-context.lua' or 'mtx-mtx-context.lua' and luatools --generate gets zsh: command not found: luatools Any suggestions will be gladly received. Alan

2 1

15th International ConTeXt Meeting
by Taco Hoekwater 03 May '21

03 May '21

TL;DR: See https://meeting.contextgarden.net/ for registration! Hi all, Registration for the next ConTeXt meeting is now open! 15th International ConTeXt Meeting ================================== The thirteenth ConTeXt meeting will take place in Bassenge, Belgium on September 20-25, 2021 You are cordially invited to join the 15th ConTeXt meeting. The meeting will host ConTeXt and Lua(Meta)TeX developers and users and gives you the opportunity to present your results, experiences and ideas on future development. The talks will be followed-up by tutorials on different ConTeXt and Lua(Meta)TeX techniques. Our meeting will take place in person since we assume vaccination levels will be high enough by then that travel restrictions will be lifted (yeah!). Alternatively, it is also possible to register for on-line attendance so you can listen to the talks from your home office. On-line attendance is free, but only open to ConTeXt Group members. Thematic context ================ The theme for this meeting is: expanding orbits You can interpret that any way you want. But, as in previous years, anything at all related to ConTeXt that you would like to share is an acceptable subject for a presentation, tutorial, discussion, Q&A session, demonstration, workshop, recital, sketch, or sermon. The programme committee is Hans Hagen and Taco Hoekwater. Social context ============== Registration opened today. We will be back in ’t Sjetootje in Bassenge-Boirs, the same location as the meetings in 2011, 2014 and 2019. There has been some remodelling (there is now an actual conference room with built-in wifi!) but the basic layout of the chateau has not changed so, as before, (single) rooms are very scarce. Note that the meeting starts on Monday evening and ends on Saturday morning. It is possible to stay on for another day (or even two, if you are OK with getting up early on Monday the 27th). Arriving early is not possible, though. Calendric context ================= • May 3, 2021, beginning of registration • July 1, 2021, deadline for early bird payment • September 20-25, 2021, 13th ConTeXt Meeting See https://meeting.contextgarden.net/ for more details. Hope to see you in September, Taco (your local organizer this year) — Taco Hoekwater E: taco(a)bittext.nl genderfluid (all pronouns)

1 0