> [...] I have confirmed by commenting/uncommenting steps of the > hinting process that af_glyph_hints_align_edge_points is the > function that snaps the tilde back to flat, so if my understanding > is correct, the points at the top and bottom of the tilde are > forming edges and are being rounded towards each other, causing the > tilde to remain flat.
Yes, it seems so. In case you haven't read it already, this article gives a nice overview, but please be aware that it is 20(!) years old and thus partially outdated with respect to some details: https://www.tug.org/TUGboat/tb24-3/lemberg.pdf > How should I proceed? Perhaps you can try to remove the affected segments from the corresponding edges. If that fails there is still the possibility to apply the vertical distortion afterwards... Werner
