... and soon after posting, I found a solution :) I read @simoncozens’ article “Advanced Glyph Reordering” (https://simoncozens.github.io/advanced-glyph-reordering/) and indeed, just swapping the horncomb and macroncomb makes all following steps easier, and makes it work in CoreText.
=> View attached media | View attached media
=> More informations about this toot | View the thread | More toots from jenskutilek@typo.social
=> View simoncozens@typo.social profile
text/geminiThis content has been proxied by September (3851b).