bash_completion

#!/bin/bash

_umpf_completion()
{
	local cmd _umpf_cmd
	local -a completion_opts completion_cmds
	_umpf_cmd="${COMP_WORDS[0]}"
	completion_opts=( $(_parse_help umpf) )
	completion_cmds=( $("${_umpf_cmd}" --help | sed -n 's/^  \([^ -][^ ]*\) .*$/\1/p') )
	_init_completion -s || return

	case "${prev}" in
	--patchdir|-p)
		_filedir -d
		return 0
		;;
	--remote|-r)
		COMPREPLY+=($( compgen -W  "$(git remote) refs/heads" -- $cur ) )
		return 0
		;;
	*)
		;;
	esac
	for (( i=1 ; i<${cword}; i++ )); do
		local tmp="${words[i]}"
		case "${tmp}" in
		-p|-r)
			i=$[i+1]
			;;
		-*)
			;;
		*)
			cmd="${tmp}"
			;;
		esac
	done
	case ${cmd} in
	"")
		COMPREPLY=( $( compgen -W "${completion_cmds[*]} help" -- $cur ) )
		;;
	diff|show|tag|tig|build)
		local -a refs
		refs=( $( compgen -W "$( git for-each-ref --format='%(refname:short)' refs/tags refs/heads refs/remotes)" -- $cur ) )
		if [ ${#refs[@]} -eq 0 ]; then
			COMPREPLY=( $( compgen -f -- $cur ) )
			compopt -o filenames
		else
			COMPREPLY=( "${refs[@]}" )
		fi
		;;
	merge)
		COMPREPLY=( $( compgen -W "$( git for-each-ref --format='%(refname:short)' refs/heads refs/remotes)" -- $cur ) )
		;;
	format-patch)
		COMPREPLY=( $( compgen -W "$( git for-each-ref --format='%(refname:short)' refs/tags)" -- $cur ) )
		;;
	esac
	COMPREPLY+=( $( compgen -W "${completion_opts[*]}" -- $cur ) )
	[[ $COMPREPLY == *= ]] && compopt -o nospace
	return 0
} &&
complete -F _umpf_completion umpf