--- ray/src/util/do_file.tcl	1994/12/08 15:53:46	2.4
+++ ray/src/util/do_file.tcl	1995/02/15 14:12:05	2.6
@@ -242,6 +242,11 @@ proc newsave f {		# save a RIF
 			return 0
 		}
 	}
+	if {[file exists $f] && ! [file writable $f] && 
+			[catch {exec chmod u+w $f} curmess]} {
+		beep
+		return 0
+	}
 	if [save_vars $f] {
 		set rifname [pwd]/$f
 		set readonly 0