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[racket] Call racket from racket on MacOSX, no response

From: Niitsuma Hirotaka (hirotaka.niitsuma at gmail.com)
Date: Tue Jul 26 23:37:26 EDT 2011		 
more problem

It happen on linux

save as a.scm
---------
(display (+ 10 3))
---------
then call from shell

$ racket -f a.scm
13

It works OK

But

save as b.scm
-----
#lang racket
(require racket/system)
(display (port->string (car (process     "ls"))))
-----
$ racket -f b.scm

no response.
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