Change the default behavior when entering an empty string

[johnbrown-IF]

Instead of displaying Come again? when the player enters an empty string, display the location description or provide a customizable predicate so that the author can define the behavior themselves.

(parse commandline [] with choices $)
        (try [look])
        (tick) (stop)

[dstelzer]

Isn't (parse commandline [] with choices $) the customizable predicate you want, though? If you put that in your story file, I think it'll accomplish your goal.

The general intent with Dialog is that authors will customize the library to their liking, which is why it doesn't have an equivalent to I7's "rule for printing a parser error"—to change the parser error messages, the easiest way is to edit stdlib.dg. If there's a reason that doesn't work here, though, do let me know.