--- ray/src/px/pcompos.c	1992/07/13 15:04:15	2.8
+++ ray/src/px/pcompos.c	1992/08/11 18:40:57	2.10
@@ -116,6 +116,11 @@ char  *argv[];
 			goto userr;
 		}
 dofiles:
+	if (ysiz > 0 & ncolumns > 0) {
+		fprintf(stderr, "%s: -a option incompatible with -y\n",
+				progname);
+		quit(1);
+	}
 	for (nfile = 0; an < argc; nfile++) {
 		if (nfile >= MAXFILE)
 			goto toomany;
@@ -356,5 +361,11 @@ err:
 quit(code)		/* exit gracefully */
 int  code;
 {
+	int  status;
+
+	if (code == 0)			/* reap any children */
+		while (wait(&status) != -1)
+			if (code == 0)
+				code = status>>8 & 0xff;
 	exit(code);
 }