On 4/10/25 7:58 PM, Mark E. Shoulson via Unicode wrote:
These really are two separate issues, and maybe it were best not to
conflate or confuse them.
The "proposed solution", as I see it, is there is some character that
attaches to the previous character (or probably the previous base
character or grapheme cluster, if it comes to that), and flags it as
subject to BiDi mirroring. I imagine this wouldn't necessarily be
available for EVERY SINGLE CHARACTER in Unicode; we don't need to make
sure it's possible to write a mirror-reversed ネ or @ or whatever (I
mean, unless we do need those), but presumably some selected list of
characters, mainly arrows and things like directional math operators
and possibly some directional emoji.
Actually, does glyph-mirroring make sense for things that don't already
have a mirrored glyph at another codepoint? Sorry, might have missed that.
~mark