[NTG-context] Hyphenation patterns and adjusted kerning: ConTeXt vs. LuaTeX
Maybe the ConTeXt community can be of assistance to the LuaTeX bunch ...
As a new LuaTeX user, I came across the following problem: Using Lua(La)TeX,
customized kerning of letter pairs (via the FeatureFile capability of fontspec)
is ignored when it coincides with a possible hyphenation of a word (e.g.
between 'f' and 'h' in German words like 'aufhalten'; see first minimal example
below).
Ulrike Fischer was so kind to point out two things
(http://tug.org/pipermail/luatex/2011-February/002569.html): First, the problem
seems to be the break points between the adjusted kerning pairs. Second,
ConTeXt seems to handle this case correctly (see second minimal example below;
feature file bonum.fea from first example required).
I am no expert in neither LuaTeX nor context, but Ulrike suggested I post here
and ask if the (typographically correct) ConTeXt behavior or solution can be
reproduced with Lua(La)TeX.
Thanks,
- Till
1. Lua(La)TeX
\begin{filecontents*}{bonum.fea}
languagesystem DFLT dflt;
languagesystem latn dflt;
feature kern {
pos f h 100;
} kern;
\end{filecontents*}
\documentclass{article}
\usepackage[ngerman]{babel}
\usepackage{fontspec}
\setmainfont[FeatureFile=bonum.fea]{TeX Gyre Bonum}
\begin{document}
fh aufhalten
\end{document}
2. ConTeXt
\mainlanguage [de]
\definefontfeature[test][featurefile=bonum,kern=yes]
\definefont[test][name:texgyrebonum*test]
\starttext
\test fh aufhalten
\stoptext
___
If your question is of interest to others as well, please add an entry to the
Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
[NTG-context] Hyphenation patterns and adjusted kerning: ConTeXt vs. LuaTeX
Am Fri, 25 Feb 2011 14:41:10 +0100 schrieb Ulrike Fischer: In base mode kerning and and hyphenation happen in the traditional tex way, so there is not much extra trickery taking place. Well, as you mention base mode: This reminded me that I had to force base mode to get my reencoding to work in latex. So I tried in context + latex/luaotfload (with german hyphenation patterns): [...] And bingo: with mode=base it works in both formats, with mode=node the kern disappears. Without mode declaration the kern disappears in latex. Ah, yes, the transcript of my first example clearly shows fontspec operating in node mode. Please excuse my naive asking: Is there any way to continue using fontspec's setmainfont command (it is convenient for someone unexperienced like me) and at the same force luaotfload into using base mode? Thanks, - Till ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] Hyphenation patterns and adjusted kerning: ConTeXt vs. LuaTeX
Am Fri, 25 Feb 2011 16:45:31 +0100 schrieb Ulrike Fischer:
Please excuse my naive asking: Is there any way to continue using
fontspec's setmainfont command (it is convenient for someone
unexperienced like me) and at the same force luaotfload into
using base mode?
The following seems to work:
\documentclass{article}
\usepackage[ngerman]{babel}
\usepackage{fontspec}
\setmainfont[RawFeature={mode=base},FeatureFile=bonum.fea]{TeX Gyre
Bonum}
\begin{document}
fh aufhalten
\end{document}
Oh joy! Thank you all, once again, for your help. It is much appreciated.
(The downside: Now that I can, I have no choice but to actually fix all the
terrible kerning mistakes in TeX Gyre Bonum. Hours and hours of work. Sigh...)
- Till
___
If your question is of interest to others as well, please add an entry to the
Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
