(redisplay_window): Don't ever test just_this_one_p

before calling try_window.
(echo_area_display): If height has changed, update other windows.
(resize_mini_frame, resize_mini_initial_height): New.
(resize_mini_window): Save/restore window configuration
differently.

1 files changed, 70 insertions, 34 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index 45cbe13f977..742cd4c89f8 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -481,7 +481,16 @@ static Lisp_Object Vmax_mini_window_height;
 
 /* Window configuration saved in resize_mini_window.  */
 
-static Lisp_Object Vresize_mini_config;
+Lisp_Object Vresize_mini_config;
+
+/* Frmae of the mini-window being resized by resize_mini_window.  */
+
+struct frame *resize_mini_frame;
+
+/* Initial height of the mini-window having been resized
+   by resize_mini_window.  */
+
+int resize_mini_initial_height;
 
 /* A scratch glyph row with contents used for generating truncation
    glyphs.  Also used in direct_output_for_insert.  */
@@ -5456,28 +5465,51 @@ resize_mini_window (w)
       else
         SET_TEXT_POS (start, BEGV, BEGV_BYTE);
       SET_MARKER_FROM_TEXT_POS (w->start, start);
-      
-      /* Change window's height, if necessary.  */
-      if (height > XFASTINT (w->height)
-          || (height < XFASTINT (w->height)
-              && NILP (Vresize_mini_config)))
+
+      if (NILP (Vresize_mini_config))
         {
-          Lisp_Object old_selected_window;
+          if (height != XFASTINT (w->height))
+            {
+              Lisp_Object old_selected_window;
+              Lisp_Object config;
+              struct gcpro gcpro1;
+              
+              resize_mini_initial_height = XFASTINT (w->height);
+              config = Fcurrent_window_configuration (Qnil);
+              GCPRO1 (config);
+              
+              old_selected_window = selected_window;
+              XSETWINDOW (selected_window, w);
+              change_window_height (height - XFASTINT (w->height), 0);
+              selected_window = old_selected_window;
+              
+              window_height_changed_p = 1;
 
-          if (NILP (Vresize_mini_config))
-            Vresize_mini_config = Fcurrent_window_configuration (Qnil);
-          
-          old_selected_window = selected_window;
-          XSETWINDOW (selected_window, w);
-          change_window_height (height - XFASTINT (w->height), 0);
-          selected_window = old_selected_window;
-          window_height_changed_p = 1;
+              /* Set this after changing window sizes, or else
+                 Vresize_mini_config would be reset in
+                 adjust_frame_glyphs.  */
+              resize_mini_frame = XFRAME (w->frame);
+              Vresize_mini_config = config;
+              UNGCPRO;
+            }
         }
-      else if (height < XFASTINT (w->height)
-               && !NILP (Vresize_mini_config))
+      else if (height != XFASTINT (w->height))
         {
-          Fset_window_configuration (Vresize_mini_config);
-          Vresize_mini_config = Qnil;
+          if (height == resize_mini_initial_height)
+            {
+              Fset_window_configuration (Vresize_mini_config);
+              Vresize_mini_config = Qnil;
+              resize_mini_frame = NULL;
+            }
+          else
+            {
+              Lisp_Object old_selected_window;
+              old_selected_window = selected_window;
+              XSETWINDOW (selected_window, w);
+              change_window_height (height - XFASTINT (w->height), 0);
+              selected_window = old_selected_window;
+            }
+              
           window_height_changed_p = 1;
         }
     }
@@ -5799,12 +5831,20 @@ echo_area_display (update_frame_p)
       echo_area_window = mini_window;
       window_height_changed_p = display_echo_area (w);
       w->must_be_updated_p = 1;
-      
+
       if (update_frame_p)
         {
-          /* Calling update_single_window is faster when we can use
-             window-based redisplay.  */
-          if (FRAME_WINDOW_P (f))
+          /* Not called from redisplay_internal.  If we changed
+             window configuration, we must redisplay thoroughly.
+             Otherwise, we can do with updating what we displayed
+             above.  */
+          if (window_height_changed_p)
+            {
+              ++windows_or_buffers_changed;
+              ++update_mode_lines;
+              redisplay_internal (0);
+            }
+          else if (FRAME_WINDOW_P (f))
             {
               update_single_window (w, 1);
               rif->flush_display (f);
@@ -5815,7 +5855,8 @@ echo_area_display (update_frame_p)
     }
   else if (!EQ (mini_window, selected_window))
     windows_or_buffers_changed++;
-  
+
+  /* Last displayed message is now the current message.  */
   echo_area_buffer[1] = echo_area_buffer[0];
       
   /* Prevent redisplay optimization in redisplay_internal by resetting
@@ -8607,8 +8648,7 @@ redisplay_window (window, just_this_one_p)
            /* Window must be either use window-based redisplay or
               be full width.  */
            && (FRAME_WINDOW_P (f)
-               || ((line_ins_del_ok && WINDOW_FULL_WIDTH_P (w))
-                   && just_this_one_p))
+               || (line_ins_del_ok && WINDOW_FULL_WIDTH_P (w)))
            && !MINI_WINDOW_P (w)
            /* Point is not known NOT to appear in window.  */
            && PT >= CHARPOS (startp)
@@ -9495,14 +9535,10 @@ get_last_unchanged_at_beg_row (w)
 /* Find the first glyph row in the current matrix of W that is not
    affected by changes at the end of current_buffer since the last
    time the window was redisplayed.  Return in *DELTA the number of
-   bytes by which buffer positions in unchanged text at the end of
-   current_buffer must be adjusted.  Value is null if no such row
-   exists, i.e. all rows are affected by changes.
-
-   The global variable end_unchanged is assumed to contain the number
-   of unchanged bytes at the end of current_buffer.  The buffer
-   position of the last changed byte in current_buffer is then Z -
-   end_unchanged.  */
+   chars by which buffer positions in unchanged text at the end of
+   current_buffer must be adjusted.  Return in *DELTA_BYTES the
+   corresponding number of bytes.  Value is null if no such row
+   exists, i.e. all rows are affected by changes.  */
    
 static struct glyph_row *
 get_first_unchanged_at_end_row (w, delta, delta_bytes)