Before this patch, flags and arguments would complete using filenames
from the current directory;
docker inspect --type <TAB>
AUTHORS CONTRIBUTING.md docs/ Makefile SECURITY.md
...
docker inspect <TAB>
With this patch, no completion is provided;
docker inspect --type <TAB>
# no results
docker inspect <TAB>
# no results
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>