Re: [ft] Large delta_y for hinted vs unhinted "COMBINING CARON BELOW" glyph

[Werner LEMBERG]

>> It's a bug in the interpreter, as far as I can see.  I think it
>> wrongly sets the phantom points for composite glyphs.  This glyph
>> is the first time ever I've seen an alignment on a vertical phantom
>> point; this might be the reason that the problem hasn't been
>> discovered earlier.
> 
> Another clue: the ttx file lists an hmtx table but no vmtx table...

This is completely irrelevant to the problem.  Phantom points are four
virtual points added by the bytecode interpreter that represent a
glyph's width and height; this makes it possible to hint the glyph
height and width also.

The basic question is how to set phantom points for composite glyphs.


    Werner