--- ray/src/px/pinterp.c	1992/03/23 16:50:26	2.3
+++ ray/src/px/pinterp.c	1992/05/26 15:23:09	2.6
@@ -34,7 +34,7 @@ static char SCCSid[] = "$SunId$ LBL";
 
 #define PACKSIZ		256		/* max. calculation packet size */
 
-#define RTCOM		"rtrace -h- -ovl -fff"
+#define RTCOM		"rtrace -h- -ovl -fff "
 
 #define ABS(x)		((x)>0?(x):-(x))
 
@@ -161,7 +161,9 @@ char	*argv[];
 			vresolu = atoi(argv[++i]);
 			break;
 		case 'p':				/* pixel aspect */
-			check(2,"f");
+			if (argv[i][2] != 'a')
+				goto badopt;
+			check(3,"f");
 			pixaspect = atof(argv[++i]);
 			break;
 		case 'v':				/* view file */
@@ -243,8 +245,6 @@ userr:
 headline(s)				/* process header string */
 char	*s;
 {
-	static char	*altname[] = {VIEWSTR,"rpict","rview","pinterp",NULL};
-	register char	**an;
 	char	fmt[32];
 
 	if (isformat(s)) {
@@ -259,12 +259,8 @@ char	*s;
 		theirexp *= exposval(s);
 		return;
 	}
-	for (an = altname; *an != NULL; an++)
-		if (!strncmp(*an, s, strlen(*an))) {
-			if (sscanview(&theirview, s+strlen(*an)) > 0)
-				gotview++;
-			break;
-		}
+	if (isview(s) && sscanview(&theirview, s) > 0)
+		gotview++;
 }