- ntg-context - NTG Mailing Lists

How to improve appearance of bars in frac, sqrt, etc. on screens?
by Ralph 07 Oct '24

07 Oct '24

Hello, I’m relatively new to ConTeXt (version 2024.05.31, LMTX, standalone) and really enjoy learning it so far, but I have one little problem with the appearance of horizontal bars in math mode. It seems the way ConTeXt displayed horizontal extensible bars in math mode some time ago (as used in \frac, \sqrt, \overbar, ...) was similar to the way LaTeX (PDFLaTeX and LuaLaTeX) and Plain TeX handled this, but it has changed since then. Instead of one bar there are now multiple characters attached to each other. This makes it look more consistent with the font, but unfortunately it doesn’t display well in any PDF viewer I’ve tried (on Linux, so I’ve not tried Adobe Acrobat Reader). The bars look dotted, I guess it’s due to anti-aliasing (the dots disappear when anti-aliasing is disabled, but then of course everything looks pixelated). Two screenshots are attached (different zoom levels in PDF viewer) so that you know what I’m talking about. Source: \setuppapersize[S3] \starttext \startformula \sqrt{a^2 + b^2} = \frac{1000 \cdot c}{1000} \stopformula \stoptext Is there a way to switch to the old bars for documents viewed mainly on screens, or is there any other way to improve their appearance? I couldn’t find any documentation on this, so I would be very thankful if somebody here could help out. Best, Ralph

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Draw leftframe to a description
by Gerion Entrup 07 Oct '24

07 Oct '24

Hi, I want to typeset an "excurses" description that is marked with a leftframe. The problem is that it spans about multiple pages and has footnotes. Here is an MWE: ``` %% -> mwe-framedtext.pdf \defineframedtext[excursusbg][ frame=off, leftframe=on, rulethickness=1mm, framecolor=blue, toffset=0mm, % there is an offset anyways ] %% -> mwe-textbackground.pdf % \definetextbackground[excursusbg] [ % location=text, % background=color, % backgroundcolor=lightblue, % frame=on, % loffset=10cm, % seems to have no impact % ] \definedescription[excursus][ text={Excursus:\ }, alternative=top, headstyle=bold, margin=1cm, width=broad, before={\startexcursusbg}, after={\stopexcursusbg}, ] \starttext \input ward \startexcursus[title={A Knuth extract}] \input knuth \stopexcursus \input ward \startexcursus[title={A much longer Knuth extract}] \input knuth Sometimes, sentences have footnotes\footnote{Some footnote}. \input knuth \input knuth \stopexcursus \stoptext ``` See the attached PDFs for the different results. In principal, I would like the excurses typesetted like to solution with \defineframedtext. However, this does not work with pagebreaks. Additionally, the leftframe is too long (it begins above the "Excursus" text). I tried toffset to let the leftframe begin exactly at the "Excurses" text without success. The solution with \textbackground looks somewhat promising. It supports pagebreaks, but draws above footnotes and prints a small rectangle at the end of the excursus. I also didn't found a way to specify a leftframe only. Also, loffset seems to have no effect, here. Do I use the false environments? Do you know a better solution? Gerion

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Issues with vim and lettrine modules
by Tommaso Gordini 06 Oct '24

06 Oct '24

Hi all, I'm trying to compile Axel Kielhorn's guide available here: https://github.com/AKielhorn/Context-Intro However, I get compilation errors regarding *vim *and *lettrine*. Both modules are loaded in the source files, so I typed in the terminal: mtxrun --script install-modules --install vim lettrine but the errors do not disappear. I ask you if these two modules produce known errors. In any case, the sources are available at the URL indicated above. If needed, I'll paste a MWE here in a future message. Thanks in advance Tommaso

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Vertical spacing in table of content
by Gerion Entrup 06 Oct '24

06 Oct '24

Hi, for my table of contents, I have set a style that makes sections and subsections smaller than chapters. However, in the rendering the vertical space seems not to adapt: It remains equal for all entities. Is there a possibility to reduce the vertical space between subsections and sections? I tried before and after but only get it to add additional space and not reducing it. Here is a MWE: ``` \setuplist[chapter][ style=bold, aligntitle=yes, ] \setuplist[section][ aligntitle=yes, style=\tfx, ] \setuplist[subsection][ aligntitle=yes, style=\tfxx, after={\blank[none]}, before={\blank[none]}, ] \starttext \placecontent \hairline \startchapter[title=foo] \startsection[title=foo] \startsubsection[title=foo] \stopsubsection \startsubsection[title=foo] \stopsubsection \startsubsection[title=foo] \stopsubsection \stopsection \startsection[title=foo] \startsubsection[title=foo] \stopsubsection \startsubsection[title=foo] \stopsubsection \stopsection \stopchapter \startchapter[title=foo] \stopchapter \stoptext ``` Gerion

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different type in footnote
by Pablo Rodriguez 05 Oct '24

05 Oct '24

Dear list, I have the following sample: \setuppapersize[A9] \starttext \type{\a.bc}\footnote{\type{\a.bc}} \stoptext Using current latest from 2024.09.25 11:53, I get an extra space after \a in the footnote. This happens both with LMTX and LuaTeX. Could anyone confirm this? (A patch would be greatly appreciated, if this were a reproducible issue.) Many thanks for your help, Pablo

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Re: Is there any way to automatically control the spacing between Chinese and non-Chinese characters?
by hf＠hongfeng.ch 04 Oct '24

04 Oct '24

thank you. I am trying to get some usable OpenType Chinese font for ConTeXt on GNU/Linux. Cheers, Hong October 3, 2024 at 7:45 AM, "黄复雄" <aahuaang(a)gmail.com> wrote: > I use \usetypescriptfile[mscore], which means using the font > > configuration that comes with ConTeXt, > > which is suitable for Windows systems. For details, see the > > installation file type-imp-mscore.mkiv. > > If you set the body font, both OpenType and TrueType are OK. > > On Thu, Oct 3, 2024 at 6:42 AM <hf(a)hongfeng.ch> wrote: > >> I'm curious what Chinese font(s) you are using with ConTeXt? Are they OpenType font, >> >> or TrueType? >> >> October 2, 2024 at 12:56 PM, "黄复雄" <aahuaang(a)gmail.com> wrote: >> >> This is a preliminary solution for inserting spaces between Chinese >> >> characters and non-Chinese characters >> >> ```ConTeXt >> >> \mainlanguage[cn] >> >> \language[cn] >> >> \setscript[hanzi] >> >> \usetypescriptfile[mscore] >> >> \usebodyfont [mschinese,12pt] >> >> \showglyphs >> >> \startluacode >> >> Thirddata = Thirddata or {} >> >> local glyph_id = nodes.nodecodes.glyph --node.id("glyph") >> >> local node_insertbefore = node.insertbefore >> >> local node_insertafter = node.insertafter >> >> local node_new = node.new >> >> local tex_sp = tex.sp >> >> local function ischinesechar(c) >> >> -- for more ranges: >> >> -- https://wiki.contextgarden.net/List_of_Unicode_blocks >> >> return (c >= 0x04E00 and c <= 0x09FFF) >> >> or (c >= 0x03400 and c <= 0x04DBF) >> >> or (c >= 0x20000 and c <= 0x2A6DF) >> >> end >> >> function Thirddata.processmystuff(head) >> >> local n = head >> >> while n do >> >> if n.id == glyph_id and ischinesechar(n.char) then >> >> local n_prev = n.prev >> >> if n_prev >> >> and n_prev.id == glyph_id >> >> and not ischinesechar(n_prev.char) >> >> then >> >> local glue = node_new("glue") >> >> glue.width = tex_sp("0.25em") >> >> glue.stretch = tex_sp("0.25em") >> >> print("insert space before:", utf8.char(n.char)) >> >> head, glue = node_insertbefore(head, n, glue) >> >> end >> >> local n_next = n.next >> >> if n_next >> >> and n_next.id == glyph_id >> >> and not ischinesechar(n_next.char) >> >> then >> >> local glue = node_new("glue") >> >> glue.width = tex_sp("0.25em") >> >> glue.stretch = tex_sp("0.25em") >> >> print("insert space after:", utf8.char(n.char)) >> >> head, glue = node_insertafter(head, n, glue) >> >> n = glue.next >> >> end >> >> end >> >> n = n.next >> >> end >> >> return head, done >> >> end >> >> nodes.tasks.appendaction("processors", "after", "Thirddata.processmystuff") >> >> \stopluacode >> >> \starttext >> >> 今天出去买菜花了5000元。 >> >> 新MacBook Pro有15\%的CPU性能提升。 >> >> \stoptext >> >> ``` >> >> On Tue, Oct 1, 2024 at 2:07 PM <ai2472206007(a)yeah.net> wrote: >> >> hi, >> >> Is there any way to automatically control the spacing between Chinese and non-Chinese characters? >> >> I noticed that there is a tracker that tracks character types and annotates them. >> >> But I don't know much about lua and the underlying tex. >> >> Any suggestions would be greatly appreciated. >> >> For example, glue is automatically added between Chinese characters and English or numbers. >> >> input: 今天出去买菜花了5000元。 >> >> will get: 今天出去买菜花了 5000 元。 >> >> ---------------------------------- >> >> input: 新MacBook Pro有15%的CPU性能提升。 >> >> will get: 新 MacBook Pro 有 15% 的 CPU 性能提升。 >> >> Muyik >> >> ___________________________________________________________________________________ >> >> If your question is of interest to others as well, please add an entry to the Wiki! >> >> maillist : ntg-context(a)ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl >> >> webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) >> >> archive : https://github.com/contextgarden/context >> >> wiki : https://wiki.contextgarden.net >> >> ___________________________________________________________________________________ >> >> ___________________________________________________________________________________ >> >> If your question is of interest to others as well, please add an entry to the Wiki! >> >> maillist : ntg-context(a)ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl >> >> webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) >> >> archive : https://github.com/contextgarden/context >> >> wiki : https://wiki.contextgarden.net >> >> ___________________________________________________________________________________ >> >> ___________________________________________________________________________________ >> >> If your question is of interest to others as well, please add an entry to the Wiki! >> >> maillist : ntg-context(a)ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl >> >> webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) >> >> archive : https://github.com/contextgarden/context >> >> wiki : https://wiki.contextgarden.net >> >> ___________________________________________________________________________________ > > ___________________________________________________________________________________ > > If your question is of interest to others as well, please add an entry to the Wiki! > > maillist : ntg-context(a)ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl > > webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) > > archive : https://github.com/contextgarden/context > > wiki : https://wiki.contextgarden.net > > ___________________________________________________________________________________

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Typescript font for math script and scriptscript
by juliusross＠gmail.com 04 Oct '24

04 Oct '24

Hi, I was wondering if there is a (good) way to have a specific font for sub/superscripts in mathematics that is different from the main font? I ask because I am working on a variable opentype math font, and it can be made to look a better if the superscripts are made a little bolder. Thanks in advance for any suggestions or examples. JR

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Typescript and Math fallback
by Alex 04 Oct '24

04 Oct '24

Dear list, I’m having some issues with my custom type-imp file. I saw in a previous exchange (https://www.mail-archive.com/ntg-context@ntg.nl/msg107516.html) that Hans suggested a way to define a fallback font for math. Based on this, I’ve adapted my custom type-imp: \starttypescriptcollection [alegreya_libertinus] \usetypescriptfile[libertinus] \loadfontgoodies[libertinus-with-alegreya-math] \definefontfeature[alefeatures][ mode=node, liga=yes, kern=yes, tlig=yes, ccmp=yes, language=dflt, protrusion=quality, expansion=quality ] \starttypescript [sans] [alegreya,alegreya-light,alegreya-medium] [name] \definefontsynonym [Sans] [name:alegreyasansregular] [features=alefeatures] \definefontsynonym [SansItalic] [name:alegreyasansitalic] [features=alefeatures] \definefontsynonym [SansSlanted] [name:alegreyasansitalic] [features=alefeatures] \definefontsynonym [SansBold] [name:alegreyasansbold] [features=alefeatures] \definefontsynonym [SansBoldItalic] [name:alegreyasansbolditalic] [features=alefeatures] \definefontsynonym [SansBoldSlanted] [name:alegreyasansbolditalic] [features=alefeatures] %\definefontsynonym [SansCaps] [AlegreyaSans-Caps] [features=alefeatures] \definefontsynonym [SansThin] [name:alegreyasansthin] [features=alefeatures] \definefontsynonym [SansThinItalic] [name:alegreyasansthinitalic] [features=alefeatures] \definefontsynonym [SansThinSlanted] [name:alegreyasansthinitalic] [features=alefeatures] %\definefontsynonym [SansThinCaps] [AlegreyaSans-ThinCaps] [features=alefeatures] \definefontsynonym [SansLight] [name:alegreyasanslight] [features=alefeatures] \definefontsynonym [SansLightItalic] [name:alegreyasanslightitalic] [features=alefeatures] \definefontsynonym [SansLightSlanted] [name:alegreyasanslightitalic] [features=alefeatures] %\definefontsynonym [SansLightCaps] [AlegreyaSans-LightCaps] [features=alefeatures] \definefontsynonym [SansMedium] [name:alegreyasansmedium] [features=alefeatures] \definefontsynonym [SansMediumItalic] [name:alegreyasansmediumitalic] [features=alefeatures] \definefontsynonym [SansMediumSlanted][name:alegreyasansmediumitalic] [features=alefeatures] \stoptypescript \starttypescript [sans] [alegreya-light] [name] \definefontsynonym [Sans] [AlegreyaSans-Light] [features=alefeatures] \definefontsynonym [SansItalic] [AlegreyaSans-LightItalic] [features=alefeatures] \definefontsynonym [SansSlanted] [AlegreyaSans-LightItalic] [features=alefeatures] %\definefontsynonym [SansCaps] [AlegreyaSans-LightCaps] [features=alefeatures] \definefontsynonym [SansBold] [AlegreyaSans-Medium] [features=alefeatures] \definefontsynonym [SansBoldItalic] [AlegreyaSans-MediumItalic] [features=alefeatures] \definefontsynonym [SansBoldSlanted][AlegreyaSans-MediumItalic] [features=alefeatures] \stoptypescript \starttypescript [sans] [alegreya-medium] [name] \definefontsynonym [Sans] [AlegreyaSans-Medium] [features=alefeatures] \definefontsynonym [SansItalic] [AlegreyaSans-MediumItalic] [features=alefeatures] \definefontsynonym [SansSlanted] [AlegreyaSans-MediumItalic] [features=alefeatures] %\definefontsynonym [SansCaps] [AlegreyaSans-MediumCaps] [features=alefeatures] \definefontsynonym [SansBold] [AlegreyaSans-ExtraBold] [features=alefeatures] \definefontsynonym [SansBoldItalic] [AlegreyaSans-ExtraBoldItalic] [features=alefeatures] \definefontsynonym [SansBoldSlanted][AlegreyaSans-ExtraBoldItalic] [features=alefeatures] \stoptypescript \starttypescript [serif] [alegreya] [name] \setups[font:fallback:serif] \definefontsynonym [Serif] [name:alegreyaregular] [features=alefeatures] \definefontsynonym [SerifItalic] [name:alegreyaitalic] [features=alefeatures] \definefontsynonym [SerifSlanted] [name:alegreyaitalic] [features=alefeatures] \definefontsynonym [SerifBold] [name:alegreyabold] [features=alefeatures] \definefontsynonym [SerifBoldItalic] [name:alegreyabolditalic] [features=alefeatures] \definefontsynonym [SerifBoldSlanted][name:alegreyabolditalic] [features=alefeatures] %\definefontsynonym [SerifCaps] [AlegreyaSerif-Caps] [features=alefeatures] \stoptypescript \starttypescript [math] [alegreya] [name] \loadfontgoodies[libertinus-with-alegreya-math] \definefontfallback [MathRomanFallBack] [name:alegreyaitalic] [lowercaseitalic,uppercaseitalic] [force=yes] \definefontfallback [MathRomanFallBack] [name:alegreyabolditalic] [lowercasebolditalic,uppercasebolditalic] [force=yes] \definefontfallback [MathRomanFallBack] [name:alegreyaregular] [lowercasenormal,uppercasenormal] [force=yes] \definefontfallback [MathRomanFallBack] [name:alegreyabold] [lowercasebold,uppercasebold] [force=yes] \definefontsynonym [MathRoman] [file:libertinusmath-regular.otf] [features={math\mathsizesuffix,libertinus:mathextra,mathextra},fallbacks=MathRomanFallBack,goodies=libertinus-math] \definefontsynonym [MathRomanBold] [file:libertinusmath-regular.otf] [features={math\mathsizesuffix,libertinus-math-bold,libertinus:mathextra,mathextra},fallbacks=MathRomanFallBack,goodies=libertinus-math] \stoptypescript \starttypescript [mono] [overpass] \definefontsynonym[OverpassMono-Regular] [file:overpass-mono-regular] \definefontsynonym[OverpassMono-Light] [file:overpass-mono-light] \stoptypescript \starttypescript [mono] [overpass] [name] \definefontsynonym [Mono] [OverpassMono-Regular] [features=] \stoptypescript \starttypescript [mono] [overpass-light] [name] \definefontsynonym [Mono] [OverpassMono-Light] [features=] \stoptypescript \starttypescript [alegreya] \definetypeface [alegreya] [rm] [serif] [alegreya] [default] \definetypeface [alegreya] [ss] [sans] [alegreya] [default] \definetypeface [alegreya] [mm] [math] [alegreya] [default] \definefontfamily [alegreya] [tt] [overpass] [scale=0.9] \stoptypescript \starttypescript [alegreya-light] \definetypeface [alegreya-light] [rm] [serif] [alegreya] [default] \definetypeface [alegreya-light] [ss] [sans] [alegreya-light] [default] \definetypeface [alegreya-light] [mm] [math] [alegreya] [default] \definefontfamily [alegreya-light] [tt] [overpass-light] [scale=0.9] \stoptypescript \starttypescript [alegreya-medium] \definetypeface [alegreya] [rm] [serif] [alegreya] [default] \definetypeface [alegreya] [ss] [sans] [alegreya-medium] [default] \definetypeface [alegreya] [mm] [math] [alegreya] [default] \definefontfamily [alegreya] [tt] [overpass] [scale=0.9] \stoptypescript \stoptypescriptcollection Also if needed I can share the custom goodie file, but not sure if it is the cause of my problems. Basically lowercaseitalic,uppercaseitalic are not replaced and libertinus is still used. The MWE: \starttext \setupbodyfont[alegreya,10pt] We use $X$, $Y$, $Z$ and $n$, $m$, etc. $\sin(x) \to \limsup x_n$ whatever. We use $\bf X$, $\bf Y$, $\bf Z$ and $\bf n$, $\bf m$, etc. $\bf \sin(x) \gets \limsup x_n$ whatever. \setupbodyfont[libertinus,10pt] We use $X$, $Y$, $Z$ and $n$, $m$, etc. $\sin(x) \to \limsup x_n$ whatever. We use $\bf X$, $\bf Y$, $\bf Z$ and $\bf n$, $\bf m$, etc. $\bf \sin(x) \gets \limsup x_n$ whatever. \stoptext Guidance much welcome. Alex

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how can I reset section counter when recursing buffers?
by damien＠thiriet.web4me.fr 03 Oct '24

03 Oct '24

Hello, When I call a buffer with sections several times, I would like to get the same headers numbers for each buffer call. (So, in my MWE twice 1 and 2, not 1, 2, 3, 4) How can I reset the section counter within a dorecurse run? I tried \resetcounter [section] but that is not the good way. I read about \headnumber and \namedheadnumber but could'nt go further. My MWE: \startbuffer \startsection[title={foo}] \input ward \stopsection \startsection[title={bar}] \input knuth \stopsection \stopbuffer \starttext \dorecurse{2}{ % how can I reset chapter number? \getbuffer } \stoptext Thanks, Damien

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Values from Lua back to ConTeXt
by Thomas Meyer 03 Oct '24

03 Oct '24

Hello, what do I have to do so that the values (d1, m1, y1) from the Lua block are returned with Return and the commented out line \date[d=d1,m=m1,y=y1][weekday,{,~},day,{.~},month,{~},year] works in ConTeXt. In other words: how do I do it right? Thank you in advance Greetings Thomas PS. Sorry, I'm a totally novice in Lua. \starttext \startluacode function ddate(s) i = 1 j = 4 y1 = string.sub(s,i,j) i = 5 j = 6 m1 = string.sub(s,i,j) i = 7 j = 8 d1 = string.sub(s,i,j) context("Geht das: %s.%s.%s", d1, m1, y1) -- that works! --return d1, m1, y1 -- that works not! Why? end \stopluacode \def\DDate#1{\ctxlua{ddate("#1")}} \DDate{20241005} %\date[d=d1,m=m1,y=y1][weekday,{,~},day,{.~},month,{~},year] \blank \date[dd,mm,yyyy][weekday,{,~},day,{.~},month,{~},year] \blank \date[d=11,m=7,y=2024][weekday,{,~},day,{.~},month,{~},year] \stoptext

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