Add zsh completion, remove compat hacks from bash

Ref #5

completion/_abra

@@ -0,0 +1,52 @@
+#compdef abra
+
+_abra () {
+	local context state line curcontext="$curcontext" ret=1
+	_arguments -n : \
+		{-h,--help}'[Help message]' \
+		'1:commands:(app server)' \
+		'*::arguments:->arguments' \
+		&& ret=0
+
+	case $state in
+		(arguments)
+			curcontext="${curcontext%:*:*}:abra-arguments-$words[1]:"
+			case $words[1] in
+				(app)
+					_arguments \
+						'1: :_abra_apps' \
+					&& ret=0
+				;;
+				(server)
+					_arguments \
+						'1:servers:_abra_servers' \
+					&& ret=0
+				;;
+			esac
+		;;
+	esac
+
+	return ret
+}
+
+_abra_servers() {
+	_path_files -/W $HOME/.abra/servers
+}
+
+_abra_apps()
+{
+	local newapps apps=($HOME/.abra/servers/*/*.env)
+	typeset -a apps
+	newapps=()
+	for app in $apps; do
+		newapps+=($(_abra_basename "${app}"))
+	done
+	_describe -t apps 'app' newapps
+}
+
+_abra_basename()
+{
+    printf -- "${1##*/}"
+}
+
+_abra "$@"

completion/abra.bash

@@ -40,13 +40,8 @@ _abra_complete_apps()
 
 _abra_complete()
 {
-    # https://github.com/andsens/homeshick/blob/master/completions/homeshick-completion.bash
+    compopt +o default +o nospace
-    if $_ABRA_HAS_COMPOPT; then
+    COMPREPLY=()
-        compopt +o default +o nospace
-        COMPREPLY=()
-    else
-        COMPREPLY=('')
-    fi
 
     local -r cmds='
         app
@@ -119,11 +114,4 @@ _abra_complete()
     fi
 }
 
-# https://github.com/andsens/homeshick/blob/master/completions/homeshick-completion.bash
-if type compopt &>/dev/null; then
-    _ABRA_HAS_COMPOPT=true
-else
-    _ABRA_HAS_COMPOPT=false
-fi
-
 complete -o default -F _abra_complete abra