# (C) 2010 magicant

# Completion script for the "which" command.
# Supports GNU which 2.20, FreeBSD 8.1, OpenBSD 4.8, NetBSD 5.0,
# Mac OS X 10.6.4, SunOS 5.10, HP-UX 11i v3.

function completion/which {

	case $("${WORDS[1]}" --version 2>/dev/null) in
		(*'GNU'*) typeset type=GNU ;;
		(*)       typeset type="$(uname 2>/dev/null)" ;;
	esac
	case $type in
		(GNU) typeset long=true ;;
		(*)   typeset long= ;;
	esac

	typeset OPTIONS ARGOPT PREFIX
	OPTIONS=( #>#
	) #<#

	case $type in (GNU|Darwin|*BSD)
		OPTIONS=("$OPTIONS" #>#
		"a ${long:+--all}; print all matches, not just the first one"
		) #<#
		case $type in (Darwin|FreeBSD)
			OPTIONS=("$OPTIONS" #>#
			"s; print nothing"
			) #<#
		esac
		;;
	esac
	case $type in (GNU)
		OPTIONS=("$OPTIONS" #>#
		"i --read-alias; read alias definitions from the standard input"
		"--skip-alias; cancel the --read-alias option"
		"--read-functions; read function definitions from the standard input"
		"--skip-functions; cancel the --read-functions option"
		"--skip-dot; ignore directory names that start with a dot"
		"--skip-tilde; ignore directories under \$HOME"
		"--show-dot; print \"./program\" for programs in a dot directory"
		"--show-tilde; use ~ for programs under \$HOME"
		"V v --version; print version info"
		"--help"
		) #<#
		# --tty-only is not completed since it's meaningless in an
		# interactive shell session
	esac

	command -f completion//parseoptions ${long:+-es}
	case $ARGOPT in
	(-)
		command -f completion//completeoptions
		;;
	(*)
		complete -P "$PREFIX" --external-command
		;;
	esac

}


# vim: set ft=sh ts=8 sts=8 sw=8 noet:
