add bash-it

dot_bash_it/completion/available/pip.completion.bash

@@ -0,0 +1,20 @@
+# shellcheck shell=bash
+
+# https://pip.pypa.io/en/stable/user_guide/#command-completion
+# Of course, you should first install pip, say on Debian:
+# sudo apt-get install python-pip
+# If the pip package is installed within virtual environments, say, python managed by pyenv,
+# you should first initialize the corresponding environment.
+# So that pip is in the system's path.
+_command_exists pip || return
+
+function __bash_it_complete_pip() {
+	if _command_exists _pip_completion; then
+		complete -o default -F _pip_completion pip
+		_pip_completion "$@"
+	else
+		eval "$(pip completion --bash)"
+		_pip_completion "$@"
+	fi
+}
+complete -o default -F __bash_it_complete_pip pip