[plt-scheme] mzscheme -tm- ?

I conjecture that this is not the desired behavior for mzscheme with  
the "-tm" combination (load from a module, call the "main" function):

uccello:~/clements/financial clements$ cat > /tmp/foo.ss
#lang scheme/base
(provide main)
(define (main x) 3)
uccello:~/clements/financial clements$ mzscheme -tm- /tmp/foo.ss
compile: bad syntax; function application is not allowed, because no # 
%app syntax transformer is bound in: (main)


Naturally, I can work around this by splitting it into a top-level- 
style file that simply requires and calls the corresponding main in  
the module with the specified args, but I'm confident that one of two  
things is true here:

a) there's some useful way to use mzscheme -tm that I'm just not  
aware of, or
b) this is not the desired behavior.

I'm betting on (b), but I'd be happy to be wrong.

John
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