[plt-scheme] using mzscheme like DrScheme

On Sun, 7 Jan 2007, Prabhakar Ragde wrote:

> I'm sorry if this is an utterly basic question, but: as I understand mzscheme 
> -r myfile.ss, it will evaluate expressions in myfile.ss but won't print the 
> results in the way DrScheme does (when a program in the Definitions window is 
> run).

Yes, '-r' turns off the Read-Eval-Print Loop, and you're missing the 
'Print' part of the REPL.

> It will, however, print anything which is the result of explicit output 
> (display, printf, etc.). Is there any way to get it to behave like 
> DrScheme

Here's one way to do what you want:

#############################################################
mithril:~ dyoo$ cat foo.ss
42
(* 3 4)
"forty five"
mithril:~ dyoo$
mithril:~ dyoo$ mzscheme -mve '(with-input-from-file "foo.ss"
                                 read-eval-print-loop)'
> 42
> 12
> "forty five"
#############################################################

That is, we can explicitely call the REPL to run across our source file.