August 2012 - ntg-context - NTG Mailing Lists

Re: [NTG-context] Questions apon Questions
by Hans Hagen 03 Aug '12

03 Aug '12

On 3-8-2012 13:31, Keith J. Schultz wrote: >> Afaik at the tex end we don't need information stored in GDEF tables. > O.K. I am confused! Polyglossia is being ported to LuaTeX. > I have be told that certain features are required. > Furthermore, as I understand the OT-Spec they are need > in certain fonts and without them proper glyph selection is not > possible. I don't know Polyglossia (and don't want to look into it either). So, what missing information are you talking of? > So, what then does LuaTeX/Context to support the glyph selection > process? I'm not sure what you refer to. Any information in GDEF that is referred to from GSUB or GPOS is merged into those already (like anchors etc). >>> 2) Is GPOS still not supported in font.loader >> >> GSUB and GPOS are supported as dropping any of them would render the whole machinery useless. > Again Confused. According to the OT-Spec. GSUB and GPOS may reference GDEF > So, what is done in such a case? The information is in the loaders gsub and gpos subtables already. >> The luatex manual is. > No Problem with that. Though, what I am looking for is also source code documention on the C-side. partial in cweb and partial in the original fontforge code >>> 6) Is the font.loader mainly in Lua or C? (I have not gotten that far yet?) >>> (only a couple hours of work done) >> >> C producing a lua table > I was hoping you would not have said that. No Problem just a little more work. the few hours you mentioned is neglectable compared to dealing with the full scope of otf > I will explain a little what I was up too. Over on the XeTeX list there was a discussions about Xe vs Lua. > One point was that the seems to be a lack for script support. Another, was the lack of Polyglossia. > Aurthur is working on porting it. It was mentioned that it might not work correctly with some indic scripts, due to the lack > of the missing support for GDEF. > > My idea, getting the tables into the font loader should be the first and easiest task! That is reading the font file data along with the other stuff keep in mind that in luatex we want to keep the tables lean and clean > and putting into the apropriate LuaTeX-datastructures(naturally, GDEF -table would match the other OTF-LuaTeX-Table programming style). > Then patching the others functions, if necessary, to use the GDEF during look-up! best first figure out *what* is is missing in the gsub/gpos luatex tables that is present in the otf GDEF > In other words, simplest first and bottom-up. Since LuaTeX says it is using the context code I decided to come to this list. > > Would you be so kind as to point me to Information how LuaTeX facilitates script handling? Or should I guess Fontforge? it doesn't handle scripts at all .. luatex only provides access to the font data on the one hand and access to the typesetter at the other end ... everything in between has to be done in lua concerning indic ... the fonts does not have all the info so additional code is needed (will be in context some day soon) 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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Adobe Source
by Philipp Gesang 03 Aug '12

03 Aug '12

Hi all, here’s the announcement: http://blogs.adobe.com/typblography/2012/08/source-sans-pro.html A typescript and a demo file can be found here: https://gist.github.com/3247112 Use as you like. Regards Philipp

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author-title cite command
by Daniel Schopper 03 Aug '12

03 Aug '12

Dear list, I'm trying to come to grips with creating a customized author-title cite command, based on this[1] thread. I was wondering how I can check on the value of the [artauthor] or [author] fields extracted by \getcitedata? Eventually I'd need a footnote citation style that prints a full citation for the first reference and then uses a author-title style for the subsequent ones: For @incollection only author and title of the article, for @book the author and title of the book. Which is why I'd need to for the existance of an artauthor… Or how can I just grab the bibtex-type? \getcitedata[bibtype] doesn’t seem to return anything. I guess this should be quite easy for someone more experienced. TIA, Daniel \setupbibtex [database=sample] \setuppublications[alternative=apa] \def\MYauthor#1#2#3#4#5{#3} \def\specialcite#1[#2]% {\bgroup \getcitedata[author1][#2] to \mauthors \getcitedata[artauthor1][#2] to \martauthors \getcitedata[arttitle][#2] to \marttitle \getcitedata[title][#2] to \mtitle \getcitedata[bibtype][#2] to \mbibtype \doifsomethingelse{\marttitle}{\marttitle}{\mtitle} % This works % % Pseudo-Code: \doifsomethingelse{\martauthors}{\martauthors}{\mauthors} % This, of course, doesn't \mbibtype % This neither \egroup} \starttext \cite[hh2010a] \cite[Eijkhout1991] \specialcite[hh2010a] \specialcite[Eijkhout1991] \stoptext [1] http://www.mail-archive.com/ntg-context@ntg.nl/msg55534.htm

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alternative command for lists
by Willi Egger 03 Aug '12

03 Aug '12

Hi all, At the moment I am busy to build a custom TOC. I stumble overt the fact, that ConTeXt seems to forget all parameters set in \setuplist once you issue alternative=command, command=… Could anyone of you enlighten me whether I miss something? Kind regards Willi P.S. Please refer to the attached minimal example.

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Questions apon Questions
by Keith J. Schultz 03 Aug '12

03 Aug '12

Hi Everybody, First off, my actual interest is in Lua(La)Tex. It seems that several key features of OpenType are not yet supported by otfload. My direct interest would be GDEF and GPOS. From my understanding of things is that such things are first developed on the Context side the pulled in by LuaTeX. I will be setting up a drive with a Mac OS, and the Context source distro, just to kept things safe. I already have the LuaTeX source distro. I have started into OT-Specifican 1.6. I have started going top down into the lua source in the normal MacTeX 2012 distro. Just to learn how things are getting done. So here are my Questions 1) Is GDEF still not supported in font.loader 2) Is GPOS still not supported in font.loader 3) Are there any Program Specifictions anywhere to be had and where 4) Any Class diagrams, flow charts, UML or similar documentation and where for font manager and even Context or LuaTeX 5) Any of 3 and 4 in the source distribution? 6) Is the font.loader mainly in Lua or C? (I have not gotten that far yet?) (only a couple hours of work done) 7) Can I safely assume that at that there enough modularization in the code sothat I can work bottom up? That is add thing needed to the font.loader{} and font{} 8) Is there any special natural language convention when discussing Context inorder to differentiate between OT-Font-Table and Lua-Tables and data structures? I have self-taught myself LUA form the online reference(far from proficient though, but the lua sources for Context and LuaTeX will get me there fast or i will just fake it. Been around programming since mid-eighties, Have learned some 20-30 programming languages( Pascal, Modula2, Cobol, PM-L, Prolog, LISP, Perl, C, C++, Objective-C) just to mention a few. I think this is enough for now. Thanx in advance for any help and pointers. regards Keith.

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linenotes: possible bug and feature request
by Pablo Rodríguez 02 Aug '12

02 Aug '12

Hi there, I have the following code: \mainlanguage[la] \definelinenote[linenote] \setuplinenote[linenote][rule=off,paragraph=yes,numbercommand=,inbetween=\qquad] \setupdescriptions[linenote][display=yes,location=serried,distance=1em]\starttext \startlinenumbering Sed \startlinenote[one]{entia: entitates W} entia \stoplinenote[one] non sunt multiplicanda \startlinenote[two]{praeter necessitatem: sine necessitate H} praeter necessitatem \stoplinenote[two]. \stoplinenumbering \stoptext And with latest beta I get an error, since blank spaces before \startlinenote...\stoplinenote are removed. So, the body contains “Sedentia” when it should read “Sed entia” (the same happens with praeter neccesitatem). I'm afraid this is a bug. The feature request is an option in linenotes that only number in the first linenote comming from the same line. You have this practice at line 7 from http://context.aanhet.net/epen2007/share/idris/cr-apparatus.pdf#page=46 and line 81 from http://context.aanhet.net/epen2007/share/idris/cr-apparatus.pdf#page=49. Could this feature be considered for future implementation? Many thanks for your help, Pablo -- http://www.ousia.tk

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Argument of \myheading has an extra }
by Jan Pohanka 02 Aug '12

02 Aug '12

Hello, this worked in recent versions, I think... \def\myheading#1#2{% #1 #2} \setuphead[section,subject] [command={\myheading}] \starttext \section{Hello} \stoptext but now I'm getting en error mtx-context | run 1: luatex --fmt="/home/honza/context/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/cont-en" --jobname="git_info2" --lua="/home/honza/context/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/cont-en.lui" --no-parse-first-line --c:currentrun=1 --c:input="./git_info2.tex" --c:kindofrun=1 "cont-yes.mkiv" This is LuaTeX, Version beta-0.70.2-2012052410 (TeX Live 2012) \write18 enabled. (/home/honza/context/tex/texmf-context/tex/context/base/cont-yes.mkiv ConTeXt ver: 2012.08.02 10:55 MKIV fmt: 2012.8.2 int: english/english system > cont-new.mkiv loaded (/home/honza/context/tex/texmf-context/tex/context/base/cont-new.mkiv system > beware: some patches loaded from cont-new.mkiv ) fonts > latin modern fonts are not preloaded languages > language en is active (git_info2.tex{/home/honza/context/tex/texmf-context/fonts/map/pdftex/context/mkiv-base.map} fonts > preloading latin modern fonts (second stage) fonts > typescripts > unknown: library 'loc' {/home/honza/context/tex/texmf/fonts/map/dvips/lm/lm-math.map}{/home/honza/context/tex/texmf/fonts/map/dvips/lm/lm-rm.map} fonts > virtual math > unable to resolve name mapsfromchar fonts > fallback modern rm 12pt is loaded structure > sectioning > section @ level 3 : 0.0.1 -> Hello ! Argument of \myheading has an extra }. system > tex > error on line 11 in file git_info2.tex: Argument of ... 1 2 \def\myheading#1#2{% 3 #1 #2} 4 5 \setuphead[section,subject] 6 [command={\myheading}] 7 8 9 \starttext 10 11 >> \section{Hello} 12 13 \stoptext 14 <inserted text> \par <to be read again> } \strc_rendering_inject_number_and_text ...ommand } \ifx \p_command \empty \di... \strc_rendering_place_head_number_and_text ...ext }\fi \strc_rendering_stop_... \strc_sectioning_handle ...e_head_number_and_text \else \strc_rendering_plac... l.11 \section{Hello} regards Jan -- Tato zpráva byla vytvořena převratným poštovním klientem Opery: http://www.opera.com/mail/

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problem with \setupalign[line]
by Peter Münster 02 Aug '12

02 Aug '12

Hi, How could I avoid please, that the lower part of the "g" gets cut: --8<---------------cut here---------------start------------->8--- \definepapersize[test][width=5cm, height=39mm] \setuppapersize[test] \setuplayout[page] \setupalign[line] \setupwhitespace[small] \starttext \dorecurse{10}{ba gla bla\par} \stoptext --8<---------------cut here---------------end--------------->8--- TIA for any help! -- Peter

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[OT] FontForge new release
by luigi scarso 02 Aug '12

02 Aug '12

A new release, 20120731, is now available for download. This time there is also a MS/Windows binary package available, thanks to Matthew Petroff who provided it. http://sourceforge.net/projects/fontforge/files/ -- luigi

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Left margin of vim module output
by Marco Patzer 01 Aug '12

01 Aug '12

Hi, how can I adjust the left margin of the output of the vim module? The core typing mechanism implements a “margin” key for this. The vim output also does not react to the “leftoffset” setting of the background mechanism. \usemodule [vim] \definetextbackground [code] [location=paragraph, %leftoffset=1cm, topoffset=5mm] \definevimtyping [C] [syntax=c, before={\starttextbackground[code]}, after=\stoptextbackground] \setuptyping [typing] [margin=1cm, before={\starttextbackground[code]}, after=\stoptextbackground] \starttext \startC /* This MEMB() definition defines a memory pool from * which we allocate neighbour entries. */ MEMB(neighbours_memb, struct neighbour, MAX_NEIGHBOURS); \stopC \blank \starttyping /* This MEMB() definition defines a memory pool from * which we allocate neighbour entries. */ MEMB(neighbours_memb, struct neighbour, MAX_NEIGHBOURS); \stoptyping \stoptext Marco

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