at line 3236 it says:
# remove any \: generated by a command that doesn't
# default to filenames or dirnames (e.g. sudo chown)
# FIXME: I'm pretty sure this does not work!
But it doesn't matter whether you say
chown or 'sudo chown' or 'sudo -s' and then chown.
I think problem is the file /etc/bash_ completion.
at line 3236 it says:
# remove any \: generated by a command that doesn't
# default to filenames or dirnames (e.g. sudo chown)
# FIXME: I'm pretty sure this does not work!
But it doesn't matter whether you say
chown or 'sudo chown' or 'sudo -s' and then chown.
Despite the FIXME I didn't find a bug report...