March 2021 - ntg-context - NTG Mailing Lists

Issue with \handletokens\with and Lua-defined macros
by Jairo A. del Rio 29 Mar '21

29 Mar '21

Hi list! See the following example: \startluacode userdata = userdata or {} --Toy example --My actual function receives an argument, but the problem remains the same userdata.myfunction = function() return "343327959841638047651959775267761420323" .. "657838053757849835434002826851807933276" .. "324327913964298509889902373459201557839" .. "84828001486412574060553756854137069878601" end interfaces.implement{ name = "myfunction", public = true, actions = function () context(userdata.myfunction()) end } \stopluacode \def\colorfulnumbers#1{\colored[h=\luaexpr{40*#1},s=1,v=1]{#1}\ }% \starttext %It doesn't work %\handletokens{\myfunction}\with\colorfulnumbers \expandafter\handletokens\expandafter{\myfunction}\with\colorfulnumbers \stoptext As readily seen from my example, I want to color each figure of the numbers generated by a Lua function. However, the use of \expandafter's is cumbersome in this case. I don't want to loop over the result in Lua because I want to be able to apply \handletokens...\with... (or another macro with a similar purpose) with different macros at the TeX end once Lua has delivered results. How should I do it in ConTeXt? Thanks in advance. Cordially, Jairo

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Radial gradient stops in SVG images
by Thangalin 29 Mar '21

29 Mar '21

In the latest release, SVG radial gradients appear to apply colour stops as solid black. Removing the <stop> elements produces a solid colour, but without a radial gradient. Hans may be aware of the issue. Meanwhile, here's an MWE. Save as gradient.svg:  <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 215.9 279.4" height="1056" width="816"><defs><radialGradient r="153.278" fy="276.602" fx="101.83" cy="276.602" cx="101.83" gradientTransform="matrix(0.41308681,-4.1069042e-8,4.7549103e-8,0.47826553,59.765073,10.270449)" id="A" gradientUnits="userSpaceOnUse"><stop offset="0" stop-color="#f9f9f9" stop-opacity="0"/><stop offset="1" stop-color="#4c1300" stop-opacity=".26"/></radialGradient></defs><g fill-rule="evenodd"><path d="M.127.127h215.646v279.146H.127z" fill="#f8da95"/><path d="M10.54 38.525h182.579v208.07H10.54z" fill="url(#A)" opacity=".75"/></g></svg>  Save as gradient.tex: % SOF \starttext \placefigure{}{\externalfigure[gradient.svg][conversion=mp]} \stoptext % EOF Expected: A light-brown, translucent, radial gradient region appears on the page. Actual: A solid, opaque, black region appears on the page. Environment: Xubuntu Linux 5.8.0-48 (clean install on VirtualBox) ConTeXt version 2021.03.27 19:09 Cheers!

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issue field in bibliography
by Damien Thiriet 29 Mar '21

29 Mar '21

Hi, I have questions related with a journal named "Documentation photographque". Each issue is devoted to another theme. How should I declare this theme in bibliography fields when quoting articles? It is quite important to get it, because the main article is always named « Le point sur… » (I don't know exactly how to translate it in English. Something like "an overview of…") so quoting it makes only sense if the issue is named, at best after the title or the number. I thought issue may do it. Am I right? Or would be comment a better place? Best regards, Damien Thiriet

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Markdown module in LMTX
by Christoph Reller 28 Mar '21

28 Mar '21

Hi, In recent versions of ConTeXt LMTX, the builtin markdown module is missing. (Files m-markdown.[lua|mkiv]) Just copying this module from an earlier version shows that they don't work anymore. MWE: ConTeXt file: -- 8< ------------------------------------------ \usemodule[markdown] \starttext \processmarkdownfile{file.md} \stoptext -- 8< ------------------------------------------ file.md: -- 8< ------------------------------------------ Title ===== Here comes a paragraph text. -- 8< ------------------------------------------ Are there plans to add and update this module? Cheers, Christoph

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Re: [NTG-context] Table disappears in floatcombination
by Christoph Reller 28 Mar '21

28 Mar '21

On Mon, Jan 4, 2021 at 7:59 PM Christoph Reller <christoph.reller(a)gmail.com> wrote: > On Sat, Dec 26, 2020 at 3:01 PM Hans Hagen <j.hagen(a)xs4all.nl> wrote: > >> On 12/26/2020 2:56 PM, Christoph Reller wrote: >> > >> > On Sat, Dec 26, 2020 at 10:54 AM Hans Hagen <j.hagen(a)xs4all.nl >> > <mailto:j.hagen@xs4all.nl>> wrote: >> > >> > On 12/25/2020 9:47 PM, Christoph Reller wrote: >> > > Hi, >> > > >> > > Consider the following MWE: >> > > >> > > \definefloat[combination][figure] >> > > \setupcaptions[ >> > > number=no, %<- comment and table appears >> > > align=flushright] >> > > \starttext >> > > \startplacecombination[title=Combination] >> > > \startfloatcombination >> > > \startplacetable%[title=Table] %<- uncomment and table >> appears >> > > \bTABLE \bTR \bTD Cell \eTD \eTR \eTABLE >> > > \stopplacetable >> > > \stopfloatcombination >> > > \stopplacecombination >> > > \stoptext >> > > >> > > In the latest LMTX version of ConTeXt, the table is not shown. >> > (In MKIV >> > > it is present.) Either commenting line 3 or activating the table >> > title >> > > in line 8 makes the table appear. >> > >> > what version of mkiv did you test? >> > >> > >> > Okay, the MKIV version is a little bit dated: 2018.05.19_21.46. >> > Still: How can I get floats without captions within a >> > floatcombination environment? >> I (or Wolfgang) needs to look into it, maybe something got lost. >> > > I hope that you find the time to solve this issue. Disappearing tables are > not so nice :( > Your work is much appreciated! > Just a reminder that this issue still persists in the latest version of ConTeXt LMTX. A fix would be highly appreciated. Cheers, Christoph

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braces removed in url
by Pablo Rodriguez 26 Mar '21

26 Mar '21

Dear list, I have the following sample: \setupinteraction[state=start] \starttext \startTEXpage[offset=1em] \def\MyURL#1{\goto{\hyphenatedurl{#1}}[url(#1)]} \MyURL{a={b}}\\ \MyURL{a=\letterleftbrace b\letterrightbrace}\\ \asciimode\MyURL{a={b}}\\ \stopTEXpage \stoptext For all three options, destination is a=#b. Both with MkIV and MkXL. What am I missing to get the destination a={b}? Many thanks for your help, Pablo -- http://www.ousia.tk

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XML/MathML namespace handling bug
by Hugo Landau 26 Mar '21

26 Mar '21

Thanks for ConTeXt, it is an amazing system. The following test case demonstrates the bug. \usemodule[mathml] \starttext \xmlprocessdata{}{ <?xml version="1.0" encoding="utf-8"?> <foo xmlns="http://www.example.com/ns/foo" xmlns:m="http://www.w3.org/1998/Math/MathML"> <m:math version="2.0"> <m:apply><m:union/><m:ci>a</m:ci><m:ci>b</m:ci></m:apply> </m:math> <m:math version="2.0"> <m:apply><m:selector/><m:ci>a</m:ci><m:ci>b</m:ci></m:apply> </m:math> </foo> }{} \stoptext No output is produced. This has been verified with live.contextgarden.net. In order for output to be produced, <m:union/> must be changed to <union> and <m:selector/> must be changed to <selector/>, but these are in the wrong namespace in this context. In other words, this bug applies to the keyword element in an apply element. Hugo Landau

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metafun / patterns
by Hans Hagen 25 Mar '21

25 Mar '21

Hi, As I'm still in metafun (and svg) mode I decided to support patterns (that are already supported at the tex end) also in metafun. As there has never been demands I suppose it's not that interesting but it sort of fits in. There are some tricky aspectx involved so the interface might evolve a bit (some more control options) but here are some examples anyway: \starttext \startMPpage[offset=1cm] draw (fullcircle scaled 5cm shifted (0cm,0cm)) withpattern image (fill fullcircle scaled 1cm withcolor "darkblue" ;) withpatternscale (1/10,1/10) ; draw (fullcircle scaled 5cm shifted (5cm,0cm)) withpattern image (fill fullcircle scaled 5mm withcolor "darkred" ;) withpatternscale (1/20,1/20) ; draw (fullcircle scaled 5cm shifted (10cm,0cm)) withpattern image (fill fullcircle scaled 5mm withcolor "darkgreen" ;) withpatternscale (1/40,1/40) ; draw (fullcircle scaled 5cm shifted (0cm,5cm)) withpattern image (fill fullcircle scaled 1cm withcolor "darkcyan" ;) withpatternscale (1/10,1/20) ; draw (fullcircle scaled 5cm shifted (5cm,5cm)) withpattern image (fill fullcircle scaled 5mm withcolor "darkmagenta" ;) withpatternscale (1/20,1/40) ; draw (fullcircle scaled 5cm shifted (10cm,5cm)) withpattern image (fill fullcircle scaled 5mm withcolor "darkyellow" ;) withpatternscale (1/40,1/80) ; \stopMPpage \startMPpage[offset=1cm] fill fullcircle scaled 11cm withcolor "darkyellow" ; draw fullcircle scaled 10cm withpattern image (fill fullcircle scaled 1cm withcolor "darkblue" ;) ; draw fulldiamond scaled 8cm withpattern image (fill fulldiamond scaled 4mm withcolor "darkgreen" ;) rotated 15 ; draw fulltriangle scaled 9cm withpattern image (fill fulltriangle scaled 3mm withcolor "white" ;) rotated 45 ; draw fullcircle scaled 10cm withpattern image (draw textext("!") withcolor "middlegray" ;) rotated 45 ; draw fullcircle scaled 10cm withpen pencircle scaled 1mm withcolor "darkgray" ; \stopMPpage \startMPpage[instance=doublefun] draw closedcurve(unitsquare xyscaled (200,200) shifted (0,-200)) withpattern image (fill closedcurve((fullcircle scaled 40 shifted (25,-25))) withcolor "darkgray" withopacity .5) withpatternscale (1,1) ; draw closedcurve(unitsquare xyscaled (200,200) shifted (0,-200)) withpattern image (fill closedcurve((fullcircle scaled 40 shifted (25,-25))) withcolor "darkred" withopacity .5) withpatternscale (1/2,1/2) ; draw closedcurve(unitsquare xyscaled (200,200) shifted (0,-200)) withpattern image (fill closedcurve((fullcircle scaled 40 shifted (25,-25))) withcolor "darkgreen" withopacity .5) withpatternscale (1/3,1/3) ; draw closedcurve(unitsquare xyscaled (200,200) shifted (0,-200)) withpattern image (fill closedcurve((fullcircle scaled 40 shifted (25,-25))) withcolor "darkblue" withopacity .5) withpatternscale (1/4,1/4) ; \stopMPpage % \startTEXpage \page \startMPcode{doublefun} draw closedcurve(unitsquare xyscaled (200,200) shifted (0,-400)) withpattern image (fill closedcurve((fullcircle scaled 40 shifted (25,-25)))) withpatternscale (1/8,1/8) ; \stopMPcode \blank \startMPcode{doublefun} draw closedcurve(unitsquare xyscaled (200,200) shifted (0,-400)) withpattern image (fill closedcurve((fullcircle scaled 40 shifted (25,-25)))) withpatternfloat true withpatternscale (1/8,1/8) ; \stopMPcode \page % \stopTEXpage % \startMPpage[instance=doublefun] % draw closedcurve(unitsquare xyscaled (200,200) shifted (0,-200)) % withpattern image ( fill closedcurve(unitsquare xyscaled (50,50) shifted (0,-50)) withcolor svgcolor(0.529,0.808,0.922) ; fill closedcurve(unitsquare xyscaled (25,25) shifted (0,-25)) withshademethod "linear" % withshadecenteronefraction (0,1) % withshadecentertwofraction (0,0) % withshadestep ( withshadefraction 0.05 withshadecolors (svgcolor(1,0,0),svgcolor(1,0,0)) ) % withshadestep ( withshadefraction 0.95 withshadecolors (svgcolor(1,0,0),svgcolor(1,0.5,0)) ) ; fill closedcurve((fullcircle scaled 40 shifted (25,-25))) withshademethod "linear" % withshadestep ( withshadefraction 0.05 withshadecolors (svggray(1),svggray(1)) ) % withshadestep ( withshadefraction 0.95 withshadecolors (svggray(1),svgcolor(0,0,1)) ) withopacity 0.5 ; ) % withpatternscale(1/4,1/4) % ; % \stopMPpage % \startTEXpage % \externalfigure[test.svg][conversion=mp,xobject=no] % \stopTEXpage \stoptext ----------------------------------------------------------------- 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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injectors not working in LMTX?
by Pablo Rodriguez 25 Mar '21

25 Mar '21

Hans, the following sample (from https://pragma-ade.com/general/manuals/workflows-mkiv.pdf#search=resort) doesn’t get right output with LMTX (current latest from 2021.03.25 14:04): \showinjector \setinjector[register][3][\column] \setinjector[list][2][{\blank[3*big]}] \starttext \placelist[section][criterium=text] \blank[3*big] \placeregister[index][criterium=text] \page \startsection[title=Alpha] first \index{first} \startsection[title=Beta] second \index{second} \startsection[title=Gamma] third \index{third} \startsection[title=Delta] fourth \index{fourth} \stoptext MkIV compiles this source fine, so I think this might be a bug. Many thanks for your help, Pablo -- http://www.ousia.tk

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PDF custom properties
by Alan Bowen 25 Mar '21

25 Mar '21

I should like to set the PDf properties so that the Document Info panel has Editor ... Title ... Subtitle ... Subject ... Keyword .... The problem is that currently \setupinteraction[subtitle=text,] goes to Subject and that there are no keys to get output labelled Subject or Editor. I have experimented with \pdfbackendsetinfo{ key }{ Text } but, so far, unsuccessfully. If this is possible,any suggestions about how to do it will be most welcome. Alan

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