Technically I see one, as bíj́na shound never break between í and j́, and they should remain ligated (or their kerning kept), even if interletter spacing is enabled (that's whay the letter is frequently rendered also as "ÿ". When converting to CAPITALS, they form a ligature looking more like Ü (with the left arm broken). Adding the accents, this looks like "y" plus a double acute, or like "U" with double acute and the broken left bar, no additional spacing should be inserted).
Without the joiner, there's nothing to prohibit the normal negative kerning to be removed and spacing to be inserted. When using monospaced fonts, both characters should also occupy the same cell (just like a "y" or "U"), not two (normal rendering without the joiner) 2016-09-28 20:36 GMT+02:00 Markus Scherer <markus....@gmail.com>: > On Wed, Sep 28, 2016 at 9:16 AM, Philippe Verdy <verd...@wanadoo.fr> > wrote: > >> My opinion is to put an accent on each letter and join them with a joiner >> > > I don't see a reason for the joiner. > > markus >