Tcl_CreateThreadExitHandler(3tcl) on Linux
The text f19b246b9f8f, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch) shipped it. The page shows this text now.
end the application or thread (and invoke exit handlers)