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sunny friday afternoon update
by Hans Hagen 08 May '20

08 May '20

Hi, I uploaded a new version of lmtx and there are some experimental features that users cna play with so that we can think about related interfacing. (I won't mention soem in the lua department that I'm still exploring myself.) When you use a math symbol its class property determines the spacing. One can use \mathopen etc to wrap such a character an dmake it behave different. There is a new mechanism to overload that property in a different way: \startlines $x\mathopen {!}+123+\mathclose {!}x$ $x\tomathopen ! +123+\tomathclose ! x$ $x\mathclose {!}+123+\mathopen {!}x$ $x\tomathclose ! +123+\tomathopen ! x$ $x ! +123+ ! x$ \stoplines It uses a low level primitive, for the open case: \Umathclass 4 with the number being the desired class. A more experimental features concerns native prescripts. Consider the following input \blank \hbox{$ {\tf X}^1_2^^3__4 \quad {\tf X}^1 ^^3 \quad {\tf X} _1 __4 \quad {\tf X} ^^3 \quad {\tf X} __4 \quad {\tf X}^^3 __4 $} \blank or with the control sequence variants: \blank \hbox{ \ruledhbox{${\tf X}\Usuperscript{a} $} \ruledhbox{${\tf X} \Usubscript{b} $} \ruledhbox{${\tf X}\Usuperscript{a}\Usubscript{b} $} \ruledhbox{${\tf X}\Usuperscript{a} \Usuperprescript{c} $} \ruledhbox{${\tf X} \Usubscript{b} \Usubprescript{d}$} \ruledhbox{${\tf X}\Usuperscript{a}\Usubscript{b}\Usuperprescript{c}\Usubprescript{d}$} \ruledhbox{${\tf X} \Usuperprescript{c} $} \ruledhbox{${\tf X} \Usubprescript{d}$} \ruledhbox{${\tf X} \Usuperprescript{c}\Usubprescript{d}$} } \blank A few days ago there was a discussion about tweaking some math parameters, like the radical spacing. I made a macro that deals with it: $\mathopenupparameter\Umathradicalvgap{10.5}\sqrt[3]{x}$ (this one is also in mkiv, be it slightly less efficient because in lmtx we can use \Umathparameter to query the state of a variable) Already present was a variant on \over which normally is used like {{1}\over{2}} i.e. the only time when tex looks back and needs to tweak styles. The alternative is: $\Uover{1}{2}$ etc which looks forward but is otherwise compatible, apart from supporting an optional keyword $\Uover style \scriptscriptstyle{1}{2}$ etc $\Uover style \textstyle{1}{2}$ etc At some point I will adapt some context code to this. Anyway, these are things that low level math users might like to play with. There are few more things but those will probably go unnoticed. 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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Compile only one new component in a project
by Fabrice Couvreur 08 May '20

08 May '20

Hi, Here is part of a project that is starting to be heavy ; when i add a chapter i do context seconde.tex How do I compile only the chapter I just added ? Thank you. Fabrice \startproduct Seconde \environment modules \environment specialite-style \environment specialite-macros \startfrontmatter \component specialite-titlepage \component specialite-contents \stopfrontmatter \startbodymatter \component chapter-1-seconde \component chapter-2-seconde \component chapter-3-seconde \component chapter-4-seconde \stopbodymatter \stopproduct

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mkiv digits/units zero padding not working
by Benjamin Buchmuller 07 May '20

07 May '20

Hi, I’m trying to get \digits{15.0=}±\digits{1.00} \digits{_8.12}±\digits{0.34} horizontally aligned as 15.0 ±1.00 8.12±0.34 But I get 15.0±1.00 8.12±0.34 instead. From the source (phys-dim.mkiv), I can see that “=“ should expand to \hphantom{0}. (I think \zeropoint in the table is outdated, since \def\zeropoint\hphantom{0} does not solve the problem either.) I can’t use tabulate or alignment in math mode for this problem unfortunately. Any hints would be very welcome. Thanks Benjamin

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mkiv \digits{2.0=} zero padding feature request
by Benjamin Buchmuller 07 May '20

07 May '20

Hi, As Wolfgang has figured out, zero padding in \digits only works for trailing (and omitted) zeroes when immediately preceded by the decimal separator. It would be nice if this would work even if there is a number preceding, so that \digits{3.1=}x\crlf \digits{3.==}x\crlf \digits{3.14}x would align at the decimal separator when right aligned. This is useful in some circumstances, where the number of significant digits varies between sources, so that one needs to typset for example \digits{3.1=}±\digits{0.5}\crlf \digits{3.28}±\digits{0.12} Thanks! Benjamin

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\placetable[location=split] reference ??
by Benjamin Buchmuller 07 May '20

07 May '20

Hi, I would like to reference a table of the following structure. \starttext \startplacetable[reference=tab1,title={A table},location=split] \startxtable \startxrow \startxcell hi \stopxcell \stopxrow \stopxtable \stopplacetable In Table \in[tab1] \stoptext It has [location=split], which I need this because xtable doesn’t like to be placed without a split; and apparently neither does it accept the \placetable[ref]{...} syntax. However, the reference is now no longer detected. I can see that the split table’s caption is about to become "Table 1.a.", "Table 1.b" etc. and I appreciate that this is potentially a quite complex mechanism anyways, but if there was any chance to get a reference as “Table 1”, I would be helped a lot. On similar lines, is there a way to have “Table 1 (continued).” in the caption? Cheers Benjamin

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long caption in 2-page spread
by jbf 07 May '20

07 May '20

The following excellent solution (see below) to a 2-page spread of an image was given me by Hans (I had been completely unaware of the command \startspread. It appears to be recent and undocumented, but it certainly simplifies matters). But in my case the title is a lengthy sentence, rather than the 4-word 'This is a cow'. And even though I have been able to split the line, e.g. title={this is my very, very, very,\\ very etc. etc. long title}, what happens is that part of the caption still appears on the right-hand page of the spread. Is there a way that I can limit the appearance of the caption to just one (the left-hand) page? In other words, so the figure is spread but not the caption? Or alternatively, have the caption neatly split across the two pages with appropriate space inbetween? I tried various combinations, including an \hfill halfway through the title, but to no avail. Perhaps this is asking too much, but there may be a workaround. Julian \startpostponing \setuppagenumbering[state=stop] \startspread \startplacefigure[location=here,title={This is a cow!}] \externalfigure[cow.pdf][height=\textheight]% \stopplacefigure \stopspread \setuppagenumbering[state=start] \stoppostponing

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how to interrupt doublesided in particular instance
by jbf 06 May '20

06 May '20

Hi list, I have a document set up in a standard way (\setuppagenumbering[alternative=doublesided]) to ensure that new chapters always begin on a recto page, but in one particular instance only, I want the new chapter to start on the next (verso) page instead of creating a blank then starting on the recto side. I thought I might have been able to force that with \page[no] immediately after the previous chapter concluded or before \chapter{My new chapter}, but this command is ignored (and may well be the wrong command to achieve what I want). Is there a way to interrupt the setup so the new chapter in this case can start on the verso page? Julian

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conflict between colored emoji and save/restore
by Ulrike Fischer 06 May '20

06 May '20

When using a colored emoji font directly after a save/restore pair in context mkiv following text gets lost: \pdfvariable compresslevel=0 \font\fontB={file:seguiemj.ttf:mode=node;+colr;} \starttext \pdfextension save\relax \pdfextension restore\relax {\fontB \char"2603} xxxx %xxxx is not there \stoptext The problem is that the coordinate transformation from the restore ends inside the emoji code: /Span << /ActualText <feff2603> >> BDC q 0.000 g 1 0 0 1 -70.867 -714.33967 cm %<---- BT (Such an save/restore part is e.g. inserted with a scaled graphics: \externalfigure[tinypicture.pdf][width=1cm]) -- Ulrike Fischer http://www.troubleshooting-tex.de/

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Re: [NTG-context] Definition of \registerpagerange (Henning Hraban Ramm)
by Hynek, Stefan 06 May '20

06 May '20

Am Mittwoch, den 06.05.2020, 06:55 +0200 schrieb ntg-context- request(a)ntg.nl: > This doesn’t answer your question, but I found: > > \setupregister[index][compress=yes] % 14, 15 becomes 14-15 > \setupregister[index][compress=text] % 14, 15 becomes 14f. > > To change the "f."/"ff." text, you’d use: > > \setuplabeltext[de][following:singular=sq.,following:plural=sqq.] > > This is defined in tex/context/base/mkiv/lang-txt.lua > and addressed in context/base/mkiv/strc-reg.mkiv in the definition of > \registerpagerange: > > \unexpanded\def\registerpagerange#1#2#3#4#5#6#7#8% #1:class > #2:processor content, content todo: -- configurable > {\pushcurrentregister{#1}% > \edef\p_pagenumber{\registerparameter\c!pagenumber}% > \ifx\p_pagenumber\v!no\else > \registerpageseparator > \global\setconstant\c_strc_registers_page_state\plusone > \dostarttagged\t!registerpagerange\empty > \dostarttagged\t!registerfrompage\empty > \withregisterpagecommand{#2}{#3}{#4}{#5}% > \dostoptagged > \ifconditional\c_strc_registers_following > \ifnum#3=\numexpr#6-1\relax > \labeltext{following:\s!singular}% > \else > \labeltext{following:\s!plural}% > \fi > \else > \registeronepagerangeseparator > \dostarttagged\t!registertopage\empty > \withregisterpagecommand{#2}{#6}{#7}{#8}% > \fi > \dostoptagged > \dostoptagged > \fi > \popcurrentregister} > > (see > https://source.contextgarden.net/tex/context/base/mkiv/strc-reg.mkiv?search… > ) > > > You should be able to combine the two "else" branches. Thank you for answering. I have had looked into this source before and tried exactly the same approach you descrived but I am on TeXlive 2019 where this is defined differently: \unexpanded\def\registerpagerange#1#2#3#4#5#6#7#8% #1:class #2:processor content, content todo: -- configurable {\pushcurrentregister{#1}% \edef\p_pagenumber{\registerparameter\c!pagenumber}% \ifx\p_pagenumber\v!no\else \registerpageseparator \global\setconstant\c_strc_registers_page_state\plusone \dostarttagged\t!registerpagerange\empty \dostarttagged\t!registerfrompage\empty \withregisterpagecommand{#2}{#3}{#4}{#5}% \dostoptagged \registeronepagerangeseparator \dostarttagged\t!registertopage\empty \withregisterpagecommand{#2}{#6}{#7}{#8}% \dostoptagged \dostoptagged \fi \popcurrentregister} and, most importantly, does not work with this approach: \unexpanded\def\registerpagerange#1#2#3#4#5#6#7#8% #1:class #2:processor content, content todo: -- configurable { \pushcurrentregister{#1}% \edef\p_pagenumber{\registerparameter\c!pagenumber}% \ifx\p_pagenumber\v!no\else \registerpageseparator \global\setconstant\c_strc_registers_page_state\plusone \dostarttagged\t!registerpagerange\empty \dostarttagged\t!registerfrompage\empty \withregisterpagecommand{#2}{#3}{#4}{#5}% \dostoptagged \ifnum#3=\numexpr#6-1\relax f.% \else \registeronepagerangeseparator \dostarttagged\t!registertopage\empty \withregisterpagecommand{#2}{#6}{#7}{#8}% \fi \dostoptagged \dostoptagged \fi \popcurrentregister} May it be that parameters have changed since then? Best regards Stefan

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ConTeXt version stuck at 2020.01.30
by Marco Patzer 05 May '20

05 May '20

Hi! Has something changed regarding the installation/update procedure? ConTeXt seems to be stuck at 2020.01.30 and downloading the newest version results in that very version. Steps to reproduce: rsync -ptv rsync://contextgarden.net/minimals/setup/first-setup.sh . sh ./first-setup.sh . tex/setuptex context --version → current version: 2020.01.30 14:13 According to https://minimals.contextgarden.net/current/context/ the directory “latest” seems to contain the latest version, rather than the “beta”. first-setup.sh however uses the “beta” directory. Has something changed and first-setup.sh hasn't been updated to reflect that change? Or is something else going on? Adapting first-setup.sh to mirror from the “latest” directory seems to fetch the latest version: rsync -ptv rsync://contextgarden.net/minimals/setup/first-setup.sh . sed -s '/\/bin\/mtxrun/s/--context=beta/--context=latest/' first-setup.sh sh ./first-setup.sh . tex/setuptex context --version → current version: 2020.04.30 11:10 Marco

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