Add MacPorts completion

_port

@@ -0,0 +1,102 @@
+#compdef port
+# ------------------------------------------------------------------------------
+# Description
+# -----------
+#
+#  Completion script for MacPorts (http://www.macports.org).
+#
+# ------------------------------------------------------------------------------
+# Authors
+# -------
+#
+#  * Matt Cable <wozz@wookie.net>
+#  * Sorin Ionescu <sorin.ionescu@gmail.com>
+#
+# ------------------------------------------------------------------------------
+
+local subcmds
+
+# Cache the list of ports.
+if (( ! $+_port_list )); then
+	_port_list=($(port echo all; echo "all current active inactive installed uninstalled outdated"))
+fi
+
+subcmds=(
+  'activate'
+  'archive'
+  'build'
+  'cat'
+  'clean'
+  'configure'
+  'contents'
+  'deactivate'
+  'dependents'
+  'deps'
+  'destroot'
+  'dir'
+  'distcheck'
+  'distclean'
+  'dmg'
+  'echo'
+  'edit'
+  'extract'
+  'fetch'
+  'file'
+  'help'
+  'info'
+  'install'
+  'installed'
+  'list'
+  'livecheck'
+  'location'
+  'mpkg'
+  'outdated'
+  'patch'
+  'pkg'
+  'provides'
+  'rpmpackage'
+  'search'
+  'selfupdate'
+  'sync'
+  'test'
+  'unarchive'
+  'uninstall'
+  'upgrade'
+  'variants'
+  'version'
+)
+
+_arguments -C \
+  '-v[verbose mode (generate verbose messages)]' \
+  '-d[debug mode (generate debugging messages)]' \
+  '-q[quiet mode (suppress messages)]' \
+  '-D[specify portdir]' \
+  '-k[keep mode (do not autoclean after install)]' \
+  '-n[dont follow dependencies in upgrade (only for upgrading)]' \
+  '-a[upgrade all installed ports (only for upgrading)]' \
+  '-u[uninstall non-active ports when upgrading and uninstalling]' \
+  '-f[force mode (ignore state file)]' \
+  '-s[source-only mode]' \
+  '-b[binary-only mode]' \
+  '-o[honor state files older than Portfile]' \
+  '*::command:->command' \
+  && return 0
+
+case "$state" in
+	(command)
+  	if (( CURRENT == 1 )); then
+  		state='subcommands'
+  	else
+  		state='portname'
+  	fi
+	;;
+esac
+
+case "$state" in
+	(subcommands)
+  	_describe -t commands 'port commands' subcmds
+	;;
+	(portname)
+  	_describe -t commands 'available ports' _port_list
+	;;
+esac