PATCH: Make subshells non-interactive

[Simon 'corecode' Schubert <corecode@fs.ei.tum.de>]

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[please cc: me on replies]

Hey,

I noticed that subshells of an interactive shell consider themself interactive as well.  I am not sure if this is desired, but making them non-interactive helps to solve my real issue:

when executing

	zsh% (cd .)

my chpwd function is executed.  In a subshell, I want to avoid that.  Making the subshell be non-interactive and checking [[ -o interactive ]] in my chpwd() does the trick, but maybe there is a better solution?

cheers
  simon

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--- Src/exec.c~	2005-04-27 12:01:39.000000000 +0200
+++ Src/exec.c	2006-07-31 13:28:15.000000000 +0200
@@ -2705,7 +2705,7 @@
     }
     if (!(sigtrapped[SIGQUIT] & ZSIG_IGNORED))
 	signal_default(SIGQUIT);
-    opts[MONITOR] = opts[USEZLE] = 0;
+    opts[MONITOR] = opts[USEZLE] = opts[INTERACTIVE] = 0;
     zleactive = 0;
     if (cl)
 	clearjobtab(monitor);

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