To the surprise of approximately zero people, loadable builtins don't fully work on HP-UX.
I'll spare you any results from 10.20 because it's totally unsupported at this point. (It doesn't even use dlopen().) On HP-UX 11.11, things half work. This is with 4.4-beta, sitting in the .../examples/loadables/ directory, after a "make all": bash-4.4# enable -f ./finfo finfo bash: enable: cannot find finfo_struct in shared object ./finfo: Unresolved module for symbol: sh_optarg (data) from ./finfo bash-4.4# enable -f ./tty tty bash-4.4# type -a tty tty is a shell builtin tty is /usr/bin/tty bash-4.4# tty /usr/lib/dld.sl: Unresolved symbol: reset_internal_getopt (code) from ./tty /usr/lib/dld.sl: Unresolved symbol: reset_internal_getopt (code) from ./tty ABORT instruction (core dumped)
