Re: [NTG-context] old style nums

2 Jan 2008

      On Wed, 02 Jan 2008 07:40:33 -0700
"Idris Samawi Hamid"  wrote:
...
On Wed, 02 Jan 2008 01:37:08 -0700, Wolfgang Schuster  
 wrote:
...
...
You also have to define "oldstyle" :-)
No, you don't have to, because oldstyle is predefined in type-ini.tex,
two other predefined fontfeatures are "default" and "smallcaps" :-)
Did you try it? worketh not ;-)
It did work for me but I got a error message for the next line,

<errormessage>
error: ...2tex/share/texmf-local/tex/context/base/font-otf.lua:2018:
attempt to index field 'description' (a nil value)
.
l.12

?
</errormessage>

My testfile:

01 % engine=luatex
02
03 \definefontfeature
04   [oldstyle]
05   [liga=yes,kern=yes,tlig=yes,trep=yes,onum=yes] % texligatures=yes,texquotes=yes
06
07 \setfontfeature{oldstyle}
08
09 \starttext
10
11 123456789 
12
13 \stoptext

I could set "tlig=no" and the error message vanishes.
...
...
...
==========================================
% engine=luatex
\setfontfeature{oldstyle}
\starttext
test
1234567890
\stoptext
...
...
...
PS Note that tnum (tabular version) looks better than onum alone, but  
is a
function of onum in the font so cannot be invoked unless onum is invoked
first.
...
\definefontfeature[tnum][tnum=yes,onum=yes]
Hmm, I assumed the order would be [onum=yes,tnum=yes], or does the order  
not matter?
I think not in this case, but a few OpenType features disable other
(e.g. onum and lnum) and the order could be in souch a case.

Wolfgang