- ntg-context - Mailing Lists

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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Grid typesetting, blockquotes in smaller font across pagebreaks
by denis.maier＠ub.unibe.ch 25 Mar '21

25 Mar '21

Hi, I'm playing around with grid typesetting. Consider the following example: -------------------------------------- \setuppapersize[A5][A5] \setupbodyfont[10pt] \setuplayout[grid=yes] \showgrid \setupdelimitedtext[blockquote] [ style=\tfx, %style=\tfx\setupinterlinespace, % this breaks grid snapping spacebefore=halfline, indentnext=no, leftmargin=no, rightmargin=no, ] \starttext \dorecurse{5}{ \dorecurse{5}{Some text on a grid. } \startblockquote \dorecurse{10}{A quotation in a smaller font. } \stopblockquote \dorecurse{5}{This should be on the grid again. }} \stoptext -------------------------------------- With style=\tfx it kind of works as long as the quotations don't run over page boundaries. With style=\tfx\setupinterlinespace paragraphs after quotations don't snap back to the grid. Spacebefore=line is somewhat better, but also only if I use \tfx without \setupinterlinespace. Any hints? (But maybe I'm approaching the problem from the wrong direction anyway... I need the have pages end consistently at the same baseline, and I thought grid typesetting might be an option here. But maybe that was a wrong assumption in the first place... Or there are better solutions.) Best, Denis

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Summing up ligature prevention tests
by denis.maier＠ub.unibe.ch 25 Mar '21

25 Mar '21

Hi, Trying to sum up what we currently have regarding ligature prevention, it looks like we have three mechanisms available: 1. \replaceword[set][input][output] Ex.: \replaceword[ligs][Auflage][Au{fl}age] Replaces a word input with the corresponding output. Doesn't work at the moment with LMTX. Can be used for words with multiple wrong ligatures (Auflaufform). Does not take derived forms into account (e.g., replacements for Auflage and Auflagen must both be defined). 2. \blockligatures Works as a font feature to block certain ligatures Works also for derived forms of a given word (e.g., \blockligatures[Au:fl:age] will also block the fl-ligature in "Auflagen"). Currently, can't be used when multiple ligatures should be suppressed. \blockligatures[Au:fl:au:ff:orm] blocks the fl-ligature, but the ff-ligature still shows up. This here seems to works though: \blockligatures [ Au:fl:auf, au:ff:orm, ] Don't know if there are unwanted side-effects to that approach. 3. \startexceptions Works via hyphenation exceptions. To define exceptions for "Auflage" and "Auflaufform" use: \startexceptions[de] au{f-}{l}{fl}(f\zwnj l)age Au{f-}{l}{fl}(f\zwnj l)au{f-}{f}{ff}(f\zwnj f)orm \stopexceptions This does not work automatically for derived forms; you'll have to define plural and other forms as well. As this works with hyphenation exceptions you'll have to add legal hyphenation points as well, so for "Auflage", you will actually need: \startexceptions[de] au{f-}{l}{fl}(f\zwnj l)a-ge \stopexceptions IMO, the \blockligatures is the cleanest, both conceptually and syntax wise. Being able to implicitely disable derived forms is a big plus, but of course there may be drawbacks I don't see now. The only downsides I see currently is that you need workarounds to block multiple ligatures in a single words, of which there might not be too many. And, it's kind of an "all or nothing" approach as you cannot define sets of blocked ligatures. (But that may not be a relevant use case anyway.) Anything, I've missed? Other aspects to think about here? How about performance issues? (The blockligatures-mechanism resulted in this: with a word list of about 2200 words it took a bit more than five seconds to process 23 A5 pages than 2.5 seconds without the blocked ligatures. I'll test with the other methods later or tomorrow.) Denis

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Writing to .tuc directly from Lua
by Jairo A. del Rio 25 Mar '21

25 Mar '21

Hi, list. I read about this: https://www.mail-archive.com/ntg-context@ntg.nl/msg60217.html But I want to know how to pass data to the .tuc file directly from Lua. I think about some complex strings are calculations which are done in each pass and slow down the whole compilation process. Something like: local function factorial(n) if in_tuc then -- whatever in_tuc means return factorials[n] else ... factorials[n] = ... return ... end end Is that feasible? Should I use the CLD versions of the TeX macros instead? Best regards, Jairo

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Another bug with ligature-blocking?
by denis.maier＠ub.unibe.ch 24 Mar '21

24 Mar '21

Hi, I just ran into something strange with ligature blocking: --------------------------------------------------------------------------------------- \blockligatures[begrif:fl:ich] \definefontfeature[default][default][dlig=yes,liga=yes,] \definefontfeature[default:block][default][blockligatures=yes] \definefontfamily[times][rm][Times New Roman] \definefontfamily[termes[rm][TeX Gyre Termes] \starttext \switchtobodyfont[times] \definedfont[Serif*default] begrifflich \blank \definedfont[Serif*default:block] begrifflich \switchtobodyfont[termes] \definedfont[Serif*default] begrifflich \blank \definedfont[Serif*default:block] begrifflich \stoptext --------------------------------------------------------------------------------------- With <Times New Roman> I'm getting < begriff|lich> when blockligatures is activated. Does anyone know what's going on there? Best, Denis

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Re: [NTG-context] Writing to .tuc directly from Lua
by Jairo A. del Rio 24 Mar '21

24 Mar '21

No, no actually. I only put a toy example. What I need to solve is related with storing data in the .tuc file when processes take a long time. Memoization doesn't work as data is lost with each new run. Jairo El mié, 24 de mar. de 2021 a la(s) 15:36, Aditya Mahajan (adityam(a)umich.edu) escribió: > On Wed, 24 Mar 2021, Jairo A. del Rio wrote: > > > Hi, Hans. Here's my (miserably failing) attempt: > > > > \definedataset[nicedata] > > > > \starttext > > > > \startluacode > > > > local name = "nicedata" > > > > > > -- For exposition only > > > > local function dofactorial(n) > > > > local function inner(c,m) > > > > if m<2 then return c end > > > > return inner(c*m, m-1) > > > > end > > > > return inner(1,n) > > > > end > > Is this an example or your actual use case? In case you want to just > compute the factorial without doing tail recursion: > > function factorial(n) > local product = 1 > for i = 1,n do > product = product * i > end > return product > end > > is reasonable fast (for values of n for which factorial(n) doesn't > overflow anyways). > > Aditya >

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