If I write foo.ML:
```` fun main() = PolyML.shell() ````
and compile this with polyc:
```` $ polyc foo.ML -o foo ````
the resulting executable doesn?t give me the usual acknowledgements of my declarations:
```` $ ./foo
3; 4; print "hello\n";
hello
3 + true;
poly: : error: Type error in function application. Function: + : int * int -> int Argument: (3, true) : int * bool Reason: Can't unify int (*In Basis*) with bool (*In Basis*) (Different type constructors) Found near 3 + true Static Errors
````
Here I?d have expected to see lines like `val it = 3 : int`. The behaviour after the compilation of the print call suggests that stdout is live, and that things really are being compiled. The error message after the last interaction is similarly reassuring.
If I call PolyML.main() inside a standard poly shell (a funny thing to do), it does work as expected.
I also tried to write code like that behind PolyML.shell by hand, and though I was providing a CPOutStream TextIO.print, I also failed to see any output from the compiler.
Is there something I should be doing differently?
Michael