gecko-dev/third_party/python/Click/examples/bashcompletion
..
README
bashcompletion.py
setup.py

README

$ bashcompletion

  bashcompletion is a simple example of an application that
  tries to autocomplete commands, arguments and options.

  This example requires Click 2.0 or higher.

Usage:

  $ pip install --editable .
  $ eval "$(_BASHCOMPLETION_COMPLETE=source bashcompletion)"
  $ bashcompletion --help