--- ray/src/common/fixargv0.c	1992/10/09 10:27:41	2.1
+++ ray/src/common/fixargv0.c	2016/03/19 00:44:46	2.6
@@ -1,15 +1,18 @@
-/* Copyright (c) 1992 Regents of the University of California */
-
 #ifndef lint
-static char SCCSid[] = "$SunId$ LBL";
+static const char	RCSid[] = "$Id: fixargv0.c,v 2.6 2016/03/19 00:44:46 schorsch Exp $";
 #endif
-
 /*
  * Fix argv[0] for DOS environments
+ *
+ *  External symbols declared in paths.h
  */
 
+#include "copyright.h"
 
-char *
+#include <ctype.h>
+#include <string.h>
+
+extern char *
 fixargv0(av0)			/* extract command name from full path */
 char  *av0;
 {
@@ -22,7 +25,8 @@ char  *av0;
 			*cp = '\0';
 			continue;
 		case '\\':			/* remove directory */
-			return(cp+1);
+			strcpy(av0, cp+1);
+			break;
 		default:			/* convert to lower case */
 			*cp = tolower(*cp);
 			continue;