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bug#14780: Regression: C-n doesn't go to next line under simple circumst


From: Eli Zaretskii
Subject: bug#14780: Regression: C-n doesn't go to next line under simple circumstances
Date: Sat, 20 Jul 2013 12:09:32 +0300

> Date: Sat, 20 Jul 2013 11:33:07 +0300
> From: Eli Zaretskii <address@hidden>
> Cc: address@hidden
> 
> Does the following fix the problem for you?

Sorry, that change had a bug.  Please try this instead:

=== modified file 'src/xdisp.c'
--- src/xdisp.c 2013-07-16 21:35:45 +0000
+++ src/xdisp.c 2013-07-20 09:05:11 +0000
@@ -15608,10 +15608,11 @@ redisplay_window (Lisp_Object window, in
             the Y coordinate of the _next_ row, see the definition of
             MATRIX_ROW_BOTTOM_Y.  */
          if (w->cursor.vpos < margin + header_line)
-           new_vpos
-             = pixel_margin + (header_line
-                               ? CURRENT_HEADER_LINE_HEIGHT (w)
-                               : 0) + frame_line_height;
+           {
+             w->cursor.vpos = -1;
+             clear_glyph_matrix (w->desired_matrix);
+             goto try_to_scroll;
+           }
          else
            {
              int window_height = window_box_height (w);
@@ -15619,7 +15620,11 @@ redisplay_window (Lisp_Object window, in
              if (header_line)
                window_height += CURRENT_HEADER_LINE_HEIGHT (w);
              if (w->cursor.y >= window_height - pixel_margin)
-               new_vpos = window_height - pixel_margin;
+               {
+                 w->cursor.vpos = -1;
+                 clear_glyph_matrix (w->desired_matrix);
+                 goto try_to_scroll;
+               }
            }
        }
 






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