XmTextFieldInsertWcs(3) on Linux
The text cba4281d92de, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
A TextField function that inserts a wide character string into a TextField widget "XmTextFieldInsertWcs" "TextField functions" "XmTextFieldInsertWcs"