We weren't handling this at all. This implementation does not do some of the fancier stuff that we do for other mark attachment rules, since these lookups are less common and it seems much less likely that there will be overlapping lookups that apply rules to the same glyphs.
We weren't handling this at all. This implementation does not do some of the fancier stuff that we do for other mark attachment rules, since these lookups are less common and it seems much less likely that there will be overlapping lookups that apply rules to the same glyphs.