Re: [NTG-context] new trickery

15 Mar 2013

      On Fri, Mar 15, 2013 at 4:35 AM, Hans Hagen  wrote:
...
On 3/15/2013 5:18 AM, Idris Samawi Hamid ادريس   سماوي حامد wrote:
...
On Thu, 14 Mar 2013 20:08:38 -0600, Idris Samawi Hamid ادريس   سماوي
حامد  wrote:
...
To round it off I guess we need a replacement for \subfs as well.
Hmm, it seems that \subfs functionality is built in through the same
mechanism. Will study this some more...
yes, but there in successive calls the last one counts
\addff{x} \addff{y} \addff{z}  -> z is used on top of the current font's set
\feature{x} \feature{y} \feature{y} -> all are used on top
we might end up with replacing \addff etc by one mechanisms
\feature{+someset} : add
\feature{-someset} : subtract
\feature{=someset} : replace
I like this proposal for its use of only a single command with the
add/remove/reset in the args. If \feature ends up being too generic,
maybe \fontfeature or \fontfeatureset instead?

To keep things more in-line with current ConTeXt syntax, you could do
something like the following:

\feature{add=foo}
\feature{subtract=bar}    (or sub, remove, etc.)
\feature{reset,add=baz}

Which would also allow, e.g.,

\feature{add=bar,remove=baz}

similar to how we're used to using key:value pairs in so many
arguments, and being able to combine them in one function call.

Jon
...
Hans
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Re: [NTG-context] new trickery

Jonathan Barchi