ENHANCED: format_//2 now evaluates arithmetic expressions for ~d, ~D, ~f, ~r and ~R
ENHANCED: format_//2 now evaluates arithmetic expressions for ~d, ~D, ~f, ~r and ~R

Example:

    ?- phrase(format_("~d", [1+2]), Cs).
       Cs = "3"
    ;  false.

mthom/rusty-wam