Bruce Momjian <bruce(at)momjian(dot)us> writes:
> stdin makes it impossible to read a script from stdin and still prompt
> the user, but I think that is of limited usefulness.
You can always get around that by reading the script with -f instead.
On balance I can see a lot more uses for read-from-stdin than the other;
however, we do need to define what happens if the command appears when
commands are coming from stdin.
regards, tom lane