How to 'fix' the SML/NJ interactive system to use Arrow Keys

Question

I\'m having some trouble using SML/NJ interactive system, namely, that when I try to use my arrow keys (either left or right to make a correction in the expression I\'ve typ

Answer 1

Another option is rlwrap.

rlwrap sml

Answer 2

Try this. You can use socat to add readline support to many things:

socat READLINE EXEC:sml

I just realized you're on OS X. socat does seem to be available for OS X, although I have not tested it (this does work on Linux).