On 12/26/2019 08:40, Hans Hagen wrote:
On 12/26/2019 1:41 PM, Rik Kabel wrote:
Okay, I have progressed further but have run into something (else) I
cannot understand. Consider the following example:
\definefontfeature [myserif] [mode=node,kern=yes,xkern=yes]
\definefontfeature [mysans] [mode=node,kern=yes,xkern=no]
\definefontfeature [none] [mode=node]
\definefontfamily [mykerns] [serif] [Baskervaldx]
[features=myserif]
\definefontfamily [mykerns] [sans] [Dejavusans]
[features=mysans]
\definefontfamily [default] [serif] [Baskervaldx]
[features=default]
\definefontfamily [default] [sans] [Dejavusans]
[features=default]
\definefontfamily [nokerns] [serif] [Baskervaldx] [features=none]
\definefontfamily [nokerns] [sans] [Dejavusans] [features=none]
\definefontfamily [legends] [mono] [Dejavusansmono]
[features=default]
\startluacode
fonts.handlers.otf.addfeature {
name = "kern",
type = "kern",
data = {
["x"] = { ["x"] = -300 },
[" "] = { ["A"] = 1000 }
}
}
fonts.handlers.otf.addfeature {
name = "xkern",
type = "kern",
data = {
["x"] = { ["x"] = 500 },
[" "] = { ["J"] = 500 }
}
}
\stopluacode
\startbuffer[Sample]
g, Jaxxb AJon
\stopbuffer
\define[2]\Test{
{\switchtobodyfont[#1]#2\getbuffer[Sample]}}
\setupbodyfont[legends]
\starttext
\starttabulate[|l|l|l|]
\NC test \NC Serif \NC Sans
\NC \NR
\NC nokerns \NC \Test{nokerns}{\tf} \NC \Test{nokerns}{\ss}
\NC \NR
\NC default \NC \Test{default}{\tf} \NC \Test{default}{\ss}
\NC \NR
\NC mykerns \NC \Test{mykerns}{\tf} \NC \Test{mykerns}{\ss}
\NC \NR
\stoptabulate
\stoptext
It shows, as far as I see, that the kern feature type supports " ",
but only when it is named kern. When it is named xkern, as here, it
does not support spaces, but does support other characters.
Indeed it's currently bound to 'kern' (mostly for convenience and a
little for performance) but it's not that hard to make it a bit more
flexible (but not today).
Hans
Thank you for the confirmation. I look forward to the update.
--
Rik
___________________________________________________________________________________
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://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___________________________________________________________________________________
