window.c: suggested patch window_scroll_pixel_based

[Martin Fredriksson]

I suggest following patch to window.c (window_scroll_pixel_based), to 
make 'scroll-down' be able to reach the start of the buffer.  This 
patch partly backs out of 1.433 (rms, 2002/12/23).  I apologize if I 
have misunderstood the issue.  I have verified the patch on OpenBSD/X11 
and OSX/Carbon.

Should I have reported this as a bug (to emacs-pretest-bug) instead?

/m

Index: window.c
===================================================================
RCS file: /cvsroot/emacs/emacs/src/window.c,v
retrieving revision 1.433
diff -u -r1.433 window.c
--- window.c    23 Dec 2002 18:04:45 -0000      1.433
+++ window.c    29 Dec 2002 01:55:05 -0000
@@ -4149,7 +4149,7 @@

   /* End if we end up at ZV or BEGV.  */
   if ((n > 0 && IT_CHARPOS (it) == ZV)
-      || (n < 0 && IT_CHARPOS (it) == BEGV))
+      || (n < 0 && IT_CHARPOS (it) == CHARPOS (start)))
     {
       if (IT_CHARPOS (it) == ZV)
        {