April 2021 - ntg-context - NTG Mailing Lists

latest standalone—lua error
by Alan Bowen 30 Apr '21

30 Apr '21

With ConTeXt ver: 2021.04.28 18:39 LMTX fmt: 2021.4.29 int, I am now getting the following error on compiling with files that were OK previously. Is there something that I need to change? Alan lua error > lua error on line 232 in file ../../env_Aestimatio-00.tex: registered function call [1151]: ...TeX/tex/texmf-context/tex/context/base/mkiv/font-sel.lua:648: attempt to index a nil value (field 'tf') stack traceback: ...TeX/tex/texmf-context/tex/context/base/mkiv/font-sel.lua:648: in field 'filefallback' ...TeX/tex/texmf-context/tex/context/base/mkiv/font-sel.lua:666: in field 'mathfallback' ...TeX/tex/texmf-context/tex/context/base/mkiv/font-sel.lua:692: in field 'fallback' ...TeX/tex/texmf-context/tex/context/base/mkiv/font-sel.lua:782: in function <...TeX/tex/texmf-context/tex/context/base/mkiv/font-sel.lua:777> (...tail calls...) 222 expansion=quality, 223 mode=node, 224 force=yes, 225 ] 226 \definefallbackfamily[mainface] [mm] [STIX Two Text] 227 [range=digitsnormal, 228 force=yes, 229 features=f:oldstyle] 230 231 \definefontfamily[mainface][mm][STIX Two Math] 232 >> 233 \setupbodyfont[mainface, 10pt] 234 235 \setupalign[hanging, stretch, hz] 236 237 %%%%%%%%%% French 238 %At beginning insert: 239 % \mainlanguage[fr] 240 % \setcharacterspacing[frenchpunctuation] 241 % \startsetups[footnote:french] 242 %\setcharacterspacing[frenchpunctuation] mtx-context | fatal error: return code: 256

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custom zig zag sidebars
by mf 29 Apr '21

29 Apr '21

Hello, I made an experiment to add alternatives to sidebars (see attachment). I discovered the sidebar is drawn by anch_sidebars_draw in metapost/context/base/mpiv/mp-apos.mpiv. I've redefined it locally to add alternatives. To make fancy, zig zag bars I defined a macro, draw_pattern_bar, that draws a bar repeating a pattern which is a path connecting (0,0) and (1,0). The macro has 3 parameters (actually it has more params, but the remainder are anch_sidebars_draw params): - a pattern, which is a path from (0,0) to (1,0) that should have a vertical size = 1; it's a sort of waveform - a pattern length, by which the pattern is xsized - a pattern width, by which the pattern is ysized Then the pattern is rotated along the bar direction (so -90 degrees) and drawn many times until it covers the bar length. A proposal and a question: - patternlength and patternwidth could become \setupsidebar params; alternative (=2,3,4...) could be used to specify the pattern (a sort of waveform); currently alternative=0 is a solid bar and alternative=1 is a dashed one - in case of long patterns (a patternlength spanning more lines of text) the last replica of the pattern should be clipped not to exceed the last line of the sidebarred text (see the last example): how can that be done? Massi

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calculating optimal height of textblock
by denis.maier＠ub.unibe.ch 29 Apr '21

29 Apr '21

Hi, how do you usually calcultate your layouts? For example in this example, the third value for height is not really helpful as there will never be a complete line : ================= \setupbodyfont[10pt] \definepapersize[test][width=140mm,height=208mm] \setuppapersize[test][test] \setuplayout[reset] \setuplayout[backspace=17mm, topspace=19mm, header=0mm, footerdistance=4mm, footer=5mm, width=105mm, %height=174mm, height=178mm, %height=177mm, % does not suffice for a complete line rightmargin=0mm, leftmargin=0mm, ] \startsetups[mypenalties] \setdefaultpenalties \setpenalties\clubpenalties{2}{0} \setpenalties\widowpenalties{2}{0} \setpenalties\displaywidowpenalties{2}{0} \stopsetups \setuplayout[setups=mypenalties] %\showframe \showmakeup %\showsetups \starttext \dorecurse{5}{\input knuth\par} \stoptext ================= How do you do this usually? Any best-practices? Hints? Trial and error seems to work ok, but maybe there is a more efficient method... Best Denis

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\setupalign[height] and \setupalign[line] in LMTX
by denis.maier＠ub.unibe.ch 28 Apr '21

28 Apr '21

Hi, \setupalign[height] and \setupalign[line] seem to have no effect in a LMTX. Do I need to change something? Best, Denis ``` \setuppapersize[A5][A5] \showframe %\setupalign[line] \setupalign[height] \setupdelimitedtext[blockquote] [ before={\setupindenting[yes]\tfx\setupinterlinespace}, spacebefore=medium, indentnext=no, leftmargin=no, rightmargin=no, ] \starttext \dorecurse{10}{ \input knuth \startblockquote \input knuth \stopblockquote \input knuth } \stoptext ```

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wrong line break in recent LMTX
by Pablo Rodriguez 28 Apr '21

28 Apr '21

Dear list, I have the following sample: \starttext \startTEXpage[offset=1ex] \hsize\zeropoint b—.\footnote{} \stopTEXpage \stoptext For some strange reason, LMTX from 2021.04.18 18:12 introduce a line break between the emdash and the point. LMTX from 2021.04.14 22:58 doesn’t apply horizontal offset to the sample above. I’m afraid this might be a bug. Or I may be missing something. Many thanks for your help, Pablo -- http://www.ousia.tk

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layers x 2
by jbf 28 Apr '21

28 Apr '21

Hi list, Is it possible to place two layers on the same page? I have several pages where that would be necessary. On the first of those pages, it did actually work, but on the remaining other pages, the second layer, even though located at the bottom of the page, eliminates the first layer. I have simply set them up one after the other. As you can see, the 1st is towards the top left of the page, while the second is bottom right. \definelayer[blessings] % name of the layer [x=0mm, y=0mm, % from upper left corner of paper width=\paperwidth, height=.5\paperheight] % let the layer cover the full paper \setlayer[blessings] % name of the layer [hoffset=.09\textwidth, voffset=1.7cm] % placement (from upper left corner of the layer) {\externalfigure[bless.eps][width=3cm]} % the actual contents of the layer \setupbackgrounds[page][background=blessings] \definelayer[tree] % name of the layer [x=0mm, y=0mm, % from upper left corner of paper width=\paperwidth, height=\paperheight] % let the layer cover the full paper \setlayer[tree] % name of the layer [hoffset=.75\textwidth, voffset=15.1cm] % placement (from upper left corner of the layer) {\externalfigure[Pohutukawa.jpg][width=.5\textwidth]} % the actual contents of the layer \setupbackgrounds[page][background=tree] What am I doing wrong? Julian

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Re: [NTG-context] Conflict between MetaPost (LMTX) and cmarrows
by Hans Hagen 27 Apr '21

27 Apr '21

On 4/27/2021 6:31 PM, Jairo A. del Rio wrote: > Hi, Hans. I've attached the relevant files. > > Jairo > > El mar, 27 de abr. de 2021 a la(s) 07:35, Hans Hagen (j.hagen(a)xs4all.nl > <mailto:j.hagen@xs4all.nl>) escribió: > > On 4/27/2021 9:23 AM, Jairo A. del Rio wrote: > > So, should I share relevant files? AFAIK only cmarrows and .mf > files in > > the cm source folder are involved. I hope you can check it if a > solution > > is possible and not too demanding. Thanks beforehand. > you can make a minimal failure example but I gues sthat the solution > has > to be in the mf macros (as there is where some pair/numeric clash > happens) indeed, as i mentioned, some variable is not set up right you need to patch (probably in all these arrow files) save x,y,x_,y_; to save x,y,x_,y_,z_; and (in mapto) numeric x,x_[],y,y_[]; to numeric x,x_[],y,y_[]; pair z_[]; 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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Conflict between MetaPost (LMTX) and cmarrows
by Jairo A. del Rio 27 Apr '21

27 Apr '21

The following: \starttext \startMPinitializations input cmarrows; setup_cmarrows(arrow_name = "texarrow"; parameter_file = "cmr6.mf"; macro_name = "nicearrow"); \stopMPinitializations \startMPpage nicearrow (origin -- (1cm*left)); \stopMPpage \stoptext compiles perfectly with ConTeXt MkIV. With LMTX, however, the following happens: 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' metapost > message : Loading cmarrows 2006/12/18, v0.9 metafun > log > overloading immutable 'eps' metafun > log > metafun > log > error: Equation cannot be performed (numeric=pair) metafun > log > metapost > log > metapost > log > <to be read again> metapost > log > ; metapost > log > <for((6.58641,1.4944))> z_[incr.n]:=(EXPR0); metapost > log > ENDFOR metapost > log > <argument> ...nt(length(path))of(path),z2,point.ttt.of(path),z9-(0,3rule_thickness#),point.tt.of(path)-3rule_thickness#*(unitvector(direction.tt.of(path))rotated90):z_[incr.n]:=z;endfor metapost > log > ;transform.T... metapost > log > hide->exitif.numeric.begingroup(TEXT0) metapost > log > ;endgroup; metapost > log > mapto->begingroup.hide(numeric.n;n:=0;numeric.x,x_[],y,y_[];for.z=(TEXT2):z_[incr.n]:=z;endfor;transform.T;z_2=z_1transformed.T;z_4=z_3transformed.T;z_6=z_5transformed.T;) metapost > log > T.endgroup metapost > log > nicearrow__sgbxww->...(z0,point(length(EXPR2))of(EXPR2),z2,point.ttt.of(EXPR2),z9-(0,3rule_thickness#),point.tt.of(EXPR2)-3rule_thickness#*(unitvector(direction.tt.of(EXPR2))rotated90)) metapost > log > ;fi.save.f,s... metapost > log > <to be read again> metapost > log > ; metapost > log > <*> nicearrow (origin -- (1cm*left)); metafun > log > metafun > log > I'm sorry, but I don't know how to make such things equal. (See the two expressions just above the error message.) metafun > log > metapost > log > ; metapost > log > What's happening? Is that intended or a bug? Jairo

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Style options and setupinterlinespace
by denis.maier＠ub.unibe.ch 27 Apr '21

27 Apr '21

Hi, the wiki (https://wiki.contextgarden.net/Font_Switching) currently says: > These quick font switches are meant for changing the font style, alternative, or size of a few words: they do not change the bodyfont, so they don't affect interline spacing or math font sizes. So, if you want to change the font size of an entire paragraph, use \switchtobodyfont<https://wiki.contextgarden.net/Command/switchtobodyfont> described below in Complete Font Change<https://wiki.contextgarden.net/Font_Switching#Complete_font_change>. However, it is fine to use them as style directives in setup commands, that is, using them as an option for style=<https://wiki.contextgarden.net/Style_and_Color_Parameters>... in any setup command that accepts style option >From this, I'd infer that a <style=tfx> or <style=\tfx> should change the interline spacing as well. But it does not seem to be the case as the example below shows. Best, Denis ---------------------------------------------------------------------------------------------- \definedelimitedtext[blockquoteA] \setupdelimitedtext[blockquoteA] [ style=tfx, spacebefore=medium, ] \definedelimitedtext[blockquoteB] \setupdelimitedtext[blockquoteB] [ before={\tfx\setupinterlinespace}, spacebefore=medium, ] \starttext \input knuth \startblockquoteA \input knuth \stopblockquoteA \input knuth \startblockquoteB \input knuth \stopblockquoteB \input knuth \stoptext ----------------------------------------------------------------------------------------------

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clubs and widows in columns
by Jano Kula 27 Apr '21

27 Apr '21

Dear list, is there a way to avoid clubs and widows in columns? I don't know, how it would be implemented, if the task is splitting typeset vertical list. \setuppapersize[A7] \starttext \startcolumns[separator=rule, align={right,nothyphenated}] \dorecurse{12}{→ one two three four five\par} \stopcolumns \stoptext For a different task: are there some higher level commands in ctx than \vsplit primitive to play with vbox splitting? Thank you, Jano

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