May 2013 - ntg-context - NTG Mailing Lists

Re: [NTG-context] Formulas in ConTeXt are different from those in plain TeX
by Hans Hagen 11 May '13

11 May '13

On 5/11/2013 12:16 PM, Tim Li wrote: > Thanks, Hans, > > can you give me a small example or show me how to do that? I really > don't know how to do that. :-( see plain.tex and the tex book but you can bet on interference ... deep down, math in context is implemented in a rather special way and that might conflict with more traditional approaches Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------

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Formulas in ConTeXt are different from those in plain TeX
by Tim Li 11 May '13

11 May '13

Hi, I have asked this question on tex.stackexchange.com http://tex.stackexchange.com/questions/113592/formulas-in-context-are-diffe… as the title said, formulas typeset by ConTeXt are different from those by plain TeX. The minimal examples are here: % plain luatex in ConTeXt standalone $$\int_a^bf(x)dx=F(b)-F(a)$$ \bye % context \starttext \startformula \int\nolimits_a^bf(x)dx=F(b)-F(a) \stopformula \stoptext Marco said to me that that's because the fonts used by LuaTeX and ConTeXt are different. This can be seen from the pdf produced by them pdffonts context.pdf name type emb sub uni object ID ------------------------------------ ----------------- --- --- --- ---------OLAZTU+LMRoman12-Regular CID Type 0C yes yes yes 18 0 RXHAAY+LatinModernMath-Regular CID Type 0C yes yes yes 19 0JTHTZJ+LatinModernMath-Regular CID Type 0C yes yes yes 20 0 pdffonts plain.pdf name type emb sub uni object ID------------------------------------ ----------------- --- --- --- --------- APMHZE+LMMathExtension10-Regular Type 1 yes yes no 4 0 AWBTPY+LMMathItalic7-Regular Type 1 yes yes no 5 0 ITITNI+LMMathItalic10-Regular Type 1 yes yes no 6 0 DMNVHT+LMRoman10-Regular Type 1 yes yes no 7 0 MGKPYK+LMMathSymbols10-Regular Type 1 yes yes no 8 0 even if using the `modern-designsize-virtual` typescript(advice from Marco), I still get the different outputs. Now, I get confused about this qustion. If ConTeXt uses LuaTeX as its engine, how can I tune ConTeXt so that it can produce the same formulas with those in plain TeX? Tim

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[luatex-fonts] font cache behavior
by Philipp Gesang 10 May '13

10 May '13

Hi all, this document: \font\foo="file:LinLibertine_R.otf:+onum;mode=node;" \foo foo 12345 whatever \bye works correctly if the font is uncached but leads to garbled output in firefox’s pdf plugin if the font is loaded from cache. Afaics none of the other viewers are affected. Also I haven’t found another font that does this. Libertine fonts: http://sourceforge.net/projects/linuxlibertine/files/linuxlibertine/5.3.0/ (First observed by Luigi.) What is going on here? Philipp

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Re: [NTG-context] [luatex] font feature with new luaotfload
by Philipp Gesang 10 May '13

10 May '13

···<date: 2013-05-10, Friday>···<from: Hironori KITAGAWA>··· > I tried the following source with TeX Live 2013 pretest. > > --- > \documentclass{article} > \usepackage{fontspec} > \begin{document} > \fontspec[RawFeature=+pwid]{KozMinPr6N-Regular} > A…B > > \fontspec[RawFeature=+fwid]{KozMinPr6N-Regular} > A…B > > \end{document} > --- > > But I got unintentional result from LuaLaTeX with luaotfload v2.2. > In concrete terms, '…' in the second line should be replaced by > its fullwidth variants CID #668 (as in koz-xetex.pdf), > but it doesn't so ('…' is not replaced) in koz-luatex.pdf. Confirmed. This is the code translated to Context: \definefontfeature[pwid][mode=node,script=latn,language=dflt,pwid=yes] \definefontfeature[fwid][mode=node,script=latn,language=dflt,fwid=yes] \starttext {\definedfont[file:kozminpr6n_regular.otf*pwid]A…B} {\definedfont[file:kozminpr6n_regular.otf*fwid]A…B} \stoptext Below is the patch translated for font-otf.lua. Best Philipp --- font-otf.lua.orig 2013-05-10 13:24:16.252748027 +0200 +++ font-otf.lua 2013-05-10 13:25:00.830697179 +0200 @@ -644,6 +644,9 @@ if not unicode or unicode == -1 or unicode >= criterium then unicode = cidunicodes[index] end + if unicode and descriptions[unicode] then + unicode = -1 + end if not unicode or unicode == -1 or unicode >= criterium then if not name then name = format("u%06X",private)

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Re: [NTG-context] Installing an arabic font
by "H. Özoguz" 10 May '13

10 May '13

> I uploaded a beta that might fix it, but it needs more testing. The > issue might have been introduced when support was added for more complex > ligature building, compare for instance this: Thanks Hans! Indeed, it was a fix, but there are still problems I find in further testing, see attachment for this code: \definefont[amiri][file:UthmanTN1Ver10.ttf*arabic at 17 pt] \define[1]\Arab{\setupalign[r2l]\amiri#1} \starttext \Arab{ لرَّحْمَـٰنِ } \stoptext In context the two signs are set one upon the other ("sukun" and "fatha"), see the second attachment (word) for the correct setting. But now this has nothing todo with ligatures, deactivating them does not help now. Huseyin

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font-age vs. font-agl
by Philipp Gesang 10 May '13

10 May '13

Hi all, the glyph list is a bit of a conundrum. Context (font-enc.lua) will build its glyph list from font-agl.lua and char-def.lua. Luatex-Fonts reads a file named font-age.lua, which is, however, some 500 character definitions short of the canonical Glyph List from Adobe’s resources [1]. On the other hand, font-age contains these definitions table={ ["SF10000"]=9484, ["SF20000"]=9492, ["SF30000"]=9488, ["SF40000"]=9496, ["SF50000"]=9532, ["SF60000"]=9516, ["SF70000"]=9524, ["SF80000"]=9500, ["SF90000"]=9508, ["afii208"]=8213, } which Adobe denotes padded as SF010000;250C SF020000;2514 SF030000;2510 SF040000;2518 SF050000;253C SF060000;252C SF070000;2534 SF080000;251C SF090000;2524 afii00208;2015 I’m not sure what to make of these differences and how they came to pass except for some older posts in the list archive [2]. So I’m asking for practical reasons: Are the differences of any significance? Can I use either list or should I stick with font-age? Thanks for any advice Philipp [1] http://partners.adobe.com/public/developer/en/opentype/glyphlist.txt [2] http://www.ntg.nl/pipermail/ntg-context/2008/031575.html http://www.ntg.nl/pipermail/ntg-context/2008/029067.html

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Set layout for the first page of Chapters
by Tim Li 09 May '13

09 May '13

Hi, when designing some documents, I hope I can set a global layout and another layout for the first page of all chapters. I have defined two layouts as follows: \setuppagenumbering [alternative=doublesided, location=] % global layout for the whole document \setuplayout [backspace=2.5cm, width=16.5cm, topspace=2cm, height=25.2cm, header=\lineheight, headerdistance=\lineheight, footer=0cm] % layout for the first page of Chapters \definelayout [firstpage] [height=26.2cm, footerdistance=\lineheight, footer=\lineheight] \starttext \chapter{First Chapter} I am in the first page. \page I am in the second page. \stoptext my question is that how I can apply this `firstpage' layout to the first page of the chapter `First Chapter' and switch back to the global layout after the first page of this chapter? Best Regards,Tim

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Obtaining the current font
by Marco Patzer 09 May '13

09 May '13

Hi, in the gnuplot module the following macro is used for the TikZ terminal: \def\calculateGNUPLOTcharsize{% \global\GNUPLOThcharsize=1.05\fontcharwd\font`0% \global\GNUPLOTvcharsize=1.05\fontcharht\font`0% \global\advance\GNUPLOTvcharsize by 1.05\fontchardp\font`g% } What are \font`0 and font`g? AFAIK the backtick converts the character to the character code, which means it yields \font48 and \font103. The goal is to get the current font, right? Why is the current font width and height addressed with `0 and the depth with `g? And when do `0 and `g result in different values? In my tests they were always the same. Marco

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mpgraphics confusion
by Meer, H. van der 09 May '13

09 May '13

I am a bit confused about the metafum graphis. In the manual (2012) I read (screen version after page 203 section 3.3) the following. \startuseMPgraphic-\useMPgraphic "this graphic is calculated each time it is placed". \startreusableMPgraphic-\reuseMPgraphic "for graphics that don't change". \startuniqueMPgraphic-\uniqueMPgraphic "this graphic is calculated for each distinctive case". I fail to see in what respect startuseMPgraphic en startuniqueMPgraphic do differ? Can someone please explain? Hans van der Meer

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missing chars in cid-keyed font table
by Dohyun Kim 09 May '13

09 May '13

Hi, With AdobeMyungjoStd-Medium.otf, I cannot typeset some chinese characters. Here is a simple tex source: \starttext \definedfont[name:adobemyungjostdmedium] 黃金빛 \stoptext U+9EC3 黃 and U+91D1 金 are missing in the pdf. Incidentally, during font cache I get a bunch of warning messages as follows: otf loading > weird, unicode U+09EC3 points to U+02FC8 with index 0x01EF7 Regards, -- Dohyun Kim Seoul, Republic of Korea

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