pass "xerrok" status across the execution call stack to more closely

match what both POSIX and ksh.1 already describe in regards to set
-e/errexit's behavior in determining when to exit from nonzero return
values.

specifically, the truth values tested as operands to `&&' and `||', as
well as the resulting compound expression itself, along with the truth
value resulting from a negated command (i.e. a pipeline prefixed `!'),
should not make the shell exit when -e is in effect.

issue reported by matthieu.
testing matthieu, naddy.
ok miod (earlier version), otto.
man page ok jmc.

1 files changed, 2 insertions, 2 deletions

diff --git a/bin/ksh/eval.c b/bin/ksh/eval.c
index 0af321366bb..e9b88066a22 100644
--- a/bin/ksh/eval.c
+++ b/bin/ksh/eval.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: eval.c,v 1.33 2007/08/02 11:05:54 fgsch Exp $	*/
+/*	$OpenBSD: eval.c,v 1.34 2009/01/29 23:27:26 jaredy Exp $	*/
 
 /*
  * Expansion - quoting, separation, substitution, globbing
@@ -868,7 +868,7 @@ comsub(Expand *xp, char *cp)
 			ksh_dup2(pv[1], 1, false);
 			close(pv[1]);
 		}
-		execute(t, XFORK|XXCOM|XPIPEO);
+		execute(t, XFORK|XXCOM|XPIPEO, NULL);
 		restfd(1, ofd1);
 		startlast();
 		xp->split = 1;	/* waitlast() */