Yeah, I didn't see anything in the man pages.

For my purposes, a Unicode library that doesn't do string comparisons is, well ... incomplete. It's a fairly fundamental thing that you need to do: I would have thought well before you'd want eg. up/down-casing, for instance.

Illumos has one: https://src.illumos.org/source/xref/illumos-gate/usr/src/com...