omz tool to dynamically load plugins

tools/_omz.sh

@@ -0,0 +1,38 @@
+#compdef omz.sh
+#autoload
+
+_omz_all_plugins() {
+  plugins=(`ls $ZSH/plugins`)
+}
+
+local -a _1st_arguments
+_1st_arguments=(
+    'plugin:Enable plugin'
+    'theme:Choose theme'
+    'upgrade:Upgrade OH MY ZSH!'
+    'uninstall:Remove OH MY ZSH! :('
+)
+
+local expl
+local -a plugins all_plugins
+
+_arguments \
+  '*:: :->subcmds' && return 0
+
+if (( CURRENT == 1 )); then
+  _describe -t commands "omz.sh subcommand" _1st_arguments
+  return
+fi
+
+case "$words[1]" in
+  plugin )
+    _arguments \
+      '1: :->name' &&  return 0
+
+    if [[ "$state" == name ]]; then
+        _omz_all_plugins
+        _wanted plugins expl 'all plugins' compadd -a plugins
+    fi
+    ;;
+
+esac