(Fconstrain_to_field): Check carefully for field boundaries if either

OLD_POS or NEW_POS has a non-nil field property, even if they're the same.

src/ChangeLog

+2000-10-16  Miles Bader  <miles@lsi.nec.co.jp>
+
+	* editfns.c (Fconstrain_to_field): Check carefully for field
+	boundaries if either OLD_POS or NEW_POS has a non-nil field
+	property, even if they're the same.
+
 2000-10-16  Kenichi Handa  <handa@etl.go.jp>
 
 	* xterm.c (x_draw_box_rect): Fix the calculation of width and

src/editfns.c

@@ -612,7 +612,8 @@ Field boundaries are not noticed if `inhibit-field-text-motion' is non-nil.")
 
   if (NILP (Vinhibit_field_text_motion)
       && !EQ (new_pos, old_pos)
-      && !char_property_eq (Qfield, new_pos, old_pos)
+      && (!NILP (Fget_char_property (new_pos, Qfield, Qnil))
+	  || !NILP (Fget_char_property (old_pos, Qfield, Qnil)))
       && (NILP (inhibit_capture_property)
 	  || NILP (Fget_char_property(old_pos, inhibit_capture_property, Qnil))))
     /* NEW_POS is not within the same field as OLD_POS; try to