XmMapSegmentEncoding(3) on Linux
The text 2b3fc38e7716, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
A compound string function that returns the compound text encoding format associated with the specified font list tag "XmMapSegmentEncoding" "compound string functions" "XmMapSegmentEncoding"