(make_cursor_line_fully_visible): Handle case of rows

taller than the window.

2 files changed, 17 insertions, 9 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 79798d69bcf..ecd00d15bed 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2000-04-28  Gerd Moellmann  <gerd@gnu.org>
+
+        * xdisp.c (make_cursor_line_fully_visible): Handle case of rows
+        taller than the window.
+
 2000-04-28  Kenichi Handa  <handa@etl.go.jp>
 
         * xfaces.c (realize_x_face): Fix the argument of the second
diff --git a/src/xdisp.c b/src/xdisp.c
index 0789230f010..2f766bf46e8 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -8148,21 +8148,24 @@ make_cursor_line_fully_visible (w)
   matrix = w->desired_matrix;
   row = MATRIX_ROW (matrix, w->cursor.vpos);
 
-  /* If row->y == top y of window display area, the window isn't tall
-     enough to display a single line.  There is nothing we can do
-     about it.  */
-  header_line_height = WINDOW_DISPLAY_HEADER_LINE_HEIGHT (w);
-  if (row->y == header_line_height)
-    return;
-
-  if (MATRIX_ROW_PARTIALLY_VISIBLE_AT_TOP_P (w, row))
+  if (MATRIX_ROW_PARTIALLY_VISIBLE_AT_TOP_P (w, row)
+      /* The row may be partially visible at the top because we
+         already have chosen a vscroll to align the bottom of the
+         row with the bottom of the window.  This happens for rows
+         taller than the window.  */
+      && row->y + row->height < window_box_height (w))
     {
       int dy = row->height - row->visible_height;
       w->vscroll = 0;
       w->cursor.y += dy;
       shift_glyph_matrix (w, matrix, 0, matrix->nrows, dy);
     }
-  else if (MATRIX_ROW_PARTIALLY_VISIBLE_AT_BOTTOM_P (w, row))
+  else if (MATRIX_ROW_PARTIALLY_VISIBLE_AT_BOTTOM_P (w, row)
+           /* The row may be partially visible at the bottom because
+              we chose a vscroll to align the row's top with the
+              window's top.  This happens for rows taller than the
+              window.  */
+           && row->y > WINDOW_DISPLAY_HEADER_LINE_HEIGHT (w))
     {
       int dy = - (row->height - row->visible_height);
       w->vscroll = dy;