>> 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
