Index: eval.c
===================================================================
RCS file: /home/rubycvs/ruby/eval.c,v
retrieving revision 1.586
diff -u -r1.586 eval.c
--- eval.c	6 Nov 2003 16:08:26 -0000	1.586
+++ eval.c	26 Nov 2003 12:44:41 -0000
@@ -9233,7 +9233,7 @@
 
     rb_thread_critical = 0;
     if (curr_thread == curr_thread->next) {
-	rb_raise(rb_eThreadError, "stopping only thread\n\tnote: use sleep to stop forever");
+	rb_raise(rb_eThreadError, "attempt to stop the only thread in existence\n\tnote: use sleep to stop forever");
     }
     if (curr_thread->status == THREAD_TO_KILL)
 	last_status = THREAD_TO_KILL;