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Re: Guile's return value

From: Thien-Thi Nguyen
Subject: Re: Guile's return value
Date: Tue, 13 Sep 2005 10:10:01 -0400

   From: address@hidden (Ludovic =?iso-8859-1?Q?Court=E8s?=)
   Date: Tue, 13 Sep 2005 13:00:45 +0200

   However, is there a reason for Guile's return value to be independent
   of the expression evaluated?  I think it would make sense, especially
   for scripts, to have Guile behave according to the expression(s)

   Even uncaught exceptions yield a zero return value, which doesn't
   sound like a very good idea.

bash seems to agree as well:

$ sh -c false ; echo $?
$ echo false > bad ; sh bad ; echo $?

here is the excerpt from libguile/script.c that implements the current
behavior (along w/ the discarding of the -c expression's value):

      /* After doing all the other actions prescribed by the command
         line, quit.  */
      tail = scm_cons (scm_cons (sym_quit, SCM_EOL), tail);

i suppose whoever wrote that expected explicit `exit' or `quit' to be
used to communicate exit value w/ the caller, which is not unreasonable.


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