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Re: [ft-devel] GETVARIATION and GETDATA
From: |
Werner LEMBERG |
Subject: |
Re: [ft-devel] GETVARIATION and GETDATA |
Date: |
Mon, 18 Jul 2016 06:32:25 +0200 (CEST) |
>> 42 was my suggestion to use instead of 17 :-)
>
> There actually is a way to test this, if you want: under certain
> circumstances, OS X runs the hints. This is to make the Chinese
> fonts that draw the glyph in their hint instructions to work. So,
> you can grab one of those and modify to inspect the return value of
> this instruction.
(a) I don't know how OS X identifies such Chinese fonts. Is it based
on font names? Otherwise, if it is based on table checksums only,
we are out of luck.
(b) The really hard thing is the `inspect' stuff. Do you have access
to a TrueType bytecode debugger on OS X that uses the OS X
bytecode engine? Otherwise, it would be necessary to do the same
as my RasterInfo font, namely adding a special digit glyph that
displays a given value as a number.
Volunteers for (b) are welcome :-)
Werner