[XXE] debugging commands with 'execute'

[Manuel Collado]

I've recently discovered the 'execute' command that allows command test 
and debugging. It works quite well, but I have a couple of questions 
about it. I'm using the following code in 'customize.xxe'

   <command name="testCommand">
     <macro>
       <choice>
         <sequence>
           <command name="execute" />
           <command name="alert" parameter="Return: [%_]" />
         </sequence>
         <command name="alert" parameter="Failed" />
       </choice>
     </macro>
   </command>

   <binding>
     <keyPressed code="E" modifiers="ctrl" />
     <command name="testCommand" />
   </binding>

1.- If the command doesn't return a value, the alert message displays a 
literal '%_' instead of an empty string. Is that the intended behaviour?

2.- The "Failed" alert message is never got. Again, is that the intended 
behaviour? If so, is there a way to know if the command fails or not?

Thanks,
-- 
------------------------------------------------------------------------
Manuel Collado Machuca                    | Facultad de Informatica UPM
Universidad Politecnica de Madrid         | Campus de Montegancedo
Dep. LSIIS                                | Boadilla del Monte
Tel.+34-91-336.74.57 Fax.+34-91-336.74.12 | 28660  MADRID  -  SPAIN
------------------------------------------------------------------------