C2073   Result pattern contains nested clauses in #translate/#command

     Explanation:  You specified a #translate/#xtranslate or
     #command/#xcommand directive containing a nested repeating result clause
     (i.e., nested square brackets).  Nested clauses are not allowed in
     result patterns.  Attempting this usually means that you need two rules
     instead of one.

     Action:  Correct and recompile.