Add comments for later dev

plugins/kernel_v2/config/trigger.rb

@@ -90,6 +90,7 @@ module VagrantPlugins
       end
 
       # Validate Trigger settings
+      # TODO: Validate not called if there are providers defined in vagrantfile
       def validate(machine)
         errors = _detected_errors
         @_before_triggers.each do |bt|

plugins/kernel_v2/config/vm_trigger.rb

@@ -114,12 +114,12 @@ module VagrantPlugins
         errors = _detected_errors
 
         commands = []
-        # TODO: Should this be cached...?
         Vagrant.plugin("2").manager.commands.each do |key,data|
           commands.push(key)
         end
 
         if !commands.include?(@command)
+          # does this make sense to print on this machine?
           machine.ui.warn(I18n.t("vagrant.config.triggers.bad_command_warning",
                                 cmd: @command))
         end