XmFileSelectionDoSearch(3) on Linux
The text 9ce28df6038e, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
A FileSelectionBox function that initiates a directory search "XmFileSelectionDoSearch" "FileSelectionBox functions" "XmFileSelectionDoSearch"