I just could reproduce another case where pidof with the argument being
a full path to a binary doesn't return a pid. It is not related to the
argument being a symlink.
This time it seems to be related to the program having been started with
arguments but I don't see the unexpected behaviour with just any
arguments, just some.
For example, when having gdb running with "gdb --core=corefile" "pidof
$(which gdb)" does not return a pid but when I start gdb with "gdb
--quiet" "pidof $(which gdb)" behaves as expected.
