>> path
>> eps_p [ self.dispatch(&PD::builtin_cd,
boost::ref(self.context.path)) ]
- | keyword_p("ls")
+ | keyword_p("ls")
>> ! path
>> eps_p [ self.dispatch(&PD::builtin_ls,
boost::ref(self.context.path)) ]
| keyword_p("exit") [ self.dispatch(&PD::builtin_exit) ]
+
+ | keyword_p("help")
+ >> ! path
+ >> eps_p [ self.dispatch(&PD::builtin_help,
+ boost::ref(self.context.path)) ]
;
block