--- ray/src/util/findglare.c	1991/05/01 16:14:13	1.23
+++ ray/src/util/findglare.c	1992/05/12 09:36:14	2.2
@@ -12,11 +12,11 @@ static char SCCSid[] = "$SunId$ LBL";
 
 #include "glare.h"
 
-#define FEQ(a,b)	((a)-(b)<=FTINY&&(a)-(b)<=FTINY)
+#define FEQ(a,b)	((a)-(b)<=FTINY&&(b)-(a)<=FTINY)
 #define VEQ(v1,v2)	(FEQ((v1)[0],(v2)[0])&&FEQ((v1)[1],(v2)[1]) \
 				&&FEQ((v1)[2],(v2)[2]))
 
-char	*rtargv[32] = {"rtrace", "-h", "-ov", "-fff"};
+char	*rtargv[32] = {"rtrace", "-h-", "-ov", "-fff"};
 int	rtargc = 4;
 
 VIEW	ourview = STDVIEW;		/* our view */
@@ -106,6 +106,7 @@ char	*argv[];
 			break;
 		case 'd':
 		case 'l':
+		case 's':
 			rtargv[rtargc++] = argv[i];
 			rtargv[rtargc++] = argv[++i];
 			break;