Mutually recursive functions

[julianhyde]

Morel should allow functions to refer to each other when declared using and. The following expression succeeds in Standard ML:

let
   fun half x = if x > 3 then (prev x) div 2 else x
   and prev x = if x > 10 then half (x - 3) else x
in
  half 14
end;                                                                                                                          =                           
val it = 1 : int

but in Morel it currently gives

unbound variable or constructor: prev

[julianhyde]

Fixed in 68b5221.