curs_in_wchstr(3) on FreeBSD
The text 6b3e342f55dd, as FreeBSD 13.5-RELEASE, FreeBSD 13.4-RELEASE, FreeBSD 13.3-RELEASE, FreeBSD 13.2-RELEASE, FreeBSD 13.1-RELEASE, FreeBSD 13.0-RELEASE shipped it.
get an array of complex characters and renditions from a curses window