Am 13.03.10 17:09, schrieb Michael Saunders:
2. What keys and values are available for the third, and what they mean.
Thank you, but by "the first two arguments", I mean 1 and 2 of:
\definefontfeature [1][2][3]. For example, in
\definefontfeature[smallcaps][smallcaps][script=latn]
I don't know what "[smallcaps][smallcaps]" is doing.
Let's start with the normal version
\definefontfeature[default][liga=yes,kern=yes,tlig=yes,trep=yes]
creates a list with the name 'default' (predefined by context and used
by default
for all fonts if not specified otherwise) with the opentype features
liga (ligature),
kern (kerning) and the pseudo tex features tlig (-- -> –, --- -> —) and
trep (' -> ’).
This feature is now applied to font in a typescript (ConTeXt system map
font files
to commands, e.g. when you write \bf in your document your get Times New
Roman Bold).
In the extended version with three arguments you copy the list from the
second
argument to the new list which name is given in the first argument and
you can
add new opentype features to the list, e.g.
\definefontfeature[mine][default][onum=yes]
creates the new list mine which inherits all features from default and
adds onum
to the list, when the name in the first and second arguments are equal
you extend
a already created list with additional features.
Wolfgang
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