Re: Strange hinting of precomposed character

[Werner LEMBERG]

>> I would expect that, if the diacritic is to be hinted as a
>> horizontal bar, that would occur only at the smallest sizes, and
>> would equally affect the combining diacritic too.
> 
> Somebody more knowledgeable can correct me, but I think combining
> diacritics happens with:
> 
> Outline1 -> hinted bitmap1
> Outline2 -> hinted bitmap2
> 
> Bitmap output = hinted bitmap1 + hinted bitmap2 positioned at
> grid-fitted (ie another "hinting") offsets
> 
> (Actually, I think it happens in the opposite order: the grid-fitted
> offsets are calculated first)
> 
> compared to a single glyph with two sets of outlines, where the
> outlines are hinted together.

Maybe this section from the ttfautohint manual helps.

  https://freetype.org/ttfautohint/doc/ttfautohint.html#composite-glyphs


    Werner