In %NOTICE-WINDOW-CHANGES!, handle cases where

GROUP-START-CHANGES-INDEX is #F.

diff --git a/v7/src/edwin/bufwiu.scm b/v7/src/edwin/bufwiu.scm
index a96933644540c18733dec662fe282f0585c3c700..75ee6ee19d4871ee75ef6185966b01ab157c6959 100644 (file)
--- a/v7/src/edwin/bufwiu.scm
+++ b/v7/src/edwin/bufwiu.scm
@@ -1,8 +1,8 @@
 ;;; -*-Scheme-*-
 ;;;
-;;;    $Id: bufwiu.scm,v 1.26 1993/10/27 01:59:35 cph Exp $
+;;;    $Id: bufwiu.scm,v 1.27 1994/08/25 00:59:18 cph Exp $
 ;;;
-;;;    Copyright (c) 1986, 1989-93 Massachusetts Institute of Technology
+;;;    Copyright (c) 1986, 1989-94 Massachusetts Institute of Technology
 ;;;
 ;;;    This material was developed by the Scheme project at the
 ;;;    Massachusetts Institute of Technology, Department of
@@ -66,7 +66,7 @@
                  ;; been updated to reflect these changes.
                  (%set-window-modified-tick! window
                                              (group-modified-tick group))))
-         (if (%window-start-line-mark window)
+         (if (and start (%window-start-line-mark window))
              (begin
                ;; If this change affects START-MARK, invalidate it
                ;; and request a display update.