--- exec.c.a	Mon Jan 29 10:02:13 2001
+++ exec.c	Mon Jan 29 10:06:57 2001
@@ -76,6 +76,7 @@
 {
 	int i;
 	volatile int rv = 0;
+	volatile int rv_prop = 0; /* rv being propogated or newly generated? */
 	int pv[2];
 	char ** volatile ap;
 	char *s, *cp;
@@ -157,6 +158,7 @@
 
 	  case TPAREN:
 		rv = execute(t->left, flags|XFORK);
+		rv_prop = 1;
 		break;
 
 	  case TPIPE:
@@ -275,6 +277,7 @@
 			rv = execute(t->right, flags & XERROK);
 		else
 			flags |= XERROK;
+		rv_prop = 1;
 		break;
 
 	  case TBANG:
@@ -323,6 +326,7 @@
 			}
 		}
 		rv = 0; /* in case of a continue */
+		rv_prop = 1;
 		if (t->type == TFOR) {
 			while (*ap != NULL) {
 				setstr(global(t->str), *ap++, KSH_SS_UNWIND_ERROR);
@@ -334,6 +338,7 @@
 			for (;;) {
 				if (!(cp = do_selectargs(ap, is_first))) {
 					rv = 1;
+					rv_prop = 0;
 					break;
 				}
 				is_first = FALSE;
@@ -365,6 +370,7 @@
 		rv = 0; /* in case of a continue */
 		while ((execute(t->left, XERROK) == 0) == (t->type == TWHILE))
 			rv = execute(t->right, flags & XERROK);
+		rv_prop = 1;
 		break;
 
 	  case TIF:
@@ -374,6 +380,7 @@
 		rv = execute(t->left, XERROK) == 0 ?
 			execute(t->right->left, flags & XERROK) :
 			execute(t->right->right, flags & XERROK);
+		rv_prop = 1;
 		break;
 
 	  case TCASE:
@@ -386,10 +393,12 @@
 		break;
 	  Found:
 		rv = execute(t->left, flags & XERROK);
+		rv_prop = 1;
 		break;
 
 	  case TBRACE:
 		rv = execute(t->left, flags & XERROK);
+		rv_prop = 1;
 		break;
 
 	  case TFUNCT:
@@ -401,6 +410,7 @@
 		 * (allows "ls -l | time grep foo").
 		 */
 		rv = timex(t, flags & ~XEXEC);
+		rv_prop = 1;
 		break;
 
 	  case TEXEC:		/* an eval'd TCOM */
@@ -428,7 +438,7 @@
 	quitenv();		/* restores IO */
 	if ((flags&XEXEC))
 		unwind(LEXIT);	/* exit child */
-	if (rv != 0 && !(flags & XERROK)) {
+	if (rv != 0 && !rv_prop && !(flags & XERROK)) {
 		if (Flag(FERREXIT))
 			unwind(LERROR);
 		trapsig(SIGERR_);