Re: [ft-devel] ttfautohint 0.4 has been released

[Werner LEMBERG]

>> Maybe Apple's interpreter resets this area while rendering a new
>> glyph?
> 
> I wonder what the difference is between the way the Apple
> interpreter (Quartz) deals with prep commands in iOS (shredded
> fonts) compared to the way Quartz interprets a prep table in OSX
> (not shredded fonts)?

I think we all do wonder :-)

>  And also, what's happening in the interpretation of a fonts prep
>  table under Adobe's OSX versions of inDesign, Illustrator etc, that
>  the Adobe app overrrides the OSX system interpreter.

The very problem is the creation process of the OpenType and TrueType
specifications.  First there were the implementations, then there were
the standards.  While Microsoft's implementation is directly derived
from the Apple code, they have changed in considerably in the last 15
years or so without actually documenting all of the changes...


    Werner