update adjustments after validating destination yrange; fixes #53918 (This

2001-09-07  Havoc Pennington  <hp@redhat.com>

	* gtk/gtktextview.c (gtk_text_view_flush_scroll): update
	adjustments after validating destination yrange; fixes #53918
	(This may cause other issues, but I hope it won't)

2001-09-05  Havoc Pennington  <hp@redhat.com>

	* gtk/gtktextbtree.c (_gtk_text_btree_delete): when merging end
	line into start line, update the character counts in parent nodes;
	caused a bug when end and start line had different parent nodes.

2001-08-30  Havoc Pennington  <hp@redhat.com>

	* gtk/gtktexttag.c (_gtk_text_attributes_fill_from_tags): add
	assertion that tag is in a table

ChangeLog

@@ -1,3 +1,20 @@
+2001-09-07  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktextview.c (gtk_text_view_flush_scroll): update
+	adjustments after validating destination yrange; fixes #53918
+	(This may cause other issues, but I hope it won't)
+	
+2001-09-05  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktextbtree.c (_gtk_text_btree_delete): when merging end
+	line into start line, update the character counts in parent nodes; 
+	caused a bug when end and start line had different parent nodes.
+
+2001-08-30  Havoc Pennington  <hp@redhat.com>
+	
+	* gtk/gtktexttag.c (_gtk_text_attributes_fill_from_tags): add
+	assertion that tag is in a table
+
 Fri Sep  7 12:48:56 2001  Matthias Clasen  <matthiasc@poet.de>
 
 	* gdk/x11/gdkkeys-x11.c (get_direction): Don't call
@@ -466,7 +483,7 @@ Tue Aug 21 12:43:29 2001  Owen Taylor  <otaylor@redhat.com>
 	* configure.in (all_loaders): Add tga loader, 
 	patch by Nicola Girardi. (#56067)
 
-Tue Aug 21 02:57:13 2001  Jonathan Blandford  <jrb@redhat.com>>
+Tue Aug 21 02:57:13 2001  Jonathan Blandford  <jrb@redhat.com>
 
 	* gtk/gtktreeview.c (gtk_tree_view_button_press): Fix up selection
 	a little.  More needs to be done tomorrow.

ChangeLog.pre-2-0

@@ -1,3 +1,20 @@
+2001-09-07  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktextview.c (gtk_text_view_flush_scroll): update
+	adjustments after validating destination yrange; fixes #53918
+	(This may cause other issues, but I hope it won't)
+	
+2001-09-05  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktextbtree.c (_gtk_text_btree_delete): when merging end
+	line into start line, update the character counts in parent nodes; 
+	caused a bug when end and start line had different parent nodes.
+
+2001-08-30  Havoc Pennington  <hp@redhat.com>
+	
+	* gtk/gtktexttag.c (_gtk_text_attributes_fill_from_tags): add
+	assertion that tag is in a table
+
 Fri Sep  7 12:48:56 2001  Matthias Clasen  <matthiasc@poet.de>
 
 	* gdk/x11/gdkkeys-x11.c (get_direction): Don't call
@@ -466,7 +483,7 @@ Tue Aug 21 12:43:29 2001  Owen Taylor  <otaylor@redhat.com>
 	* configure.in (all_loaders): Add tga loader, 
 	patch by Nicola Girardi. (#56067)
 
-Tue Aug 21 02:57:13 2001  Jonathan Blandford  <jrb@redhat.com>>
+Tue Aug 21 02:57:13 2001  Jonathan Blandford  <jrb@redhat.com>
 
 	* gtk/gtktreeview.c (gtk_tree_view_button_press): Fix up selection
 	a little.  More needs to be done tomorrow.

ChangeLog.pre-2-10

@@ -1,3 +1,20 @@
+2001-09-07  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktextview.c (gtk_text_view_flush_scroll): update
+	adjustments after validating destination yrange; fixes #53918
+	(This may cause other issues, but I hope it won't)
+	
+2001-09-05  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktextbtree.c (_gtk_text_btree_delete): when merging end
+	line into start line, update the character counts in parent nodes; 
+	caused a bug when end and start line had different parent nodes.
+
+2001-08-30  Havoc Pennington  <hp@redhat.com>
+	
+	* gtk/gtktexttag.c (_gtk_text_attributes_fill_from_tags): add
+	assertion that tag is in a table
+
 Fri Sep  7 12:48:56 2001  Matthias Clasen  <matthiasc@poet.de>
 
 	* gdk/x11/gdkkeys-x11.c (get_direction): Don't call
@@ -466,7 +483,7 @@ Tue Aug 21 12:43:29 2001  Owen Taylor  <otaylor@redhat.com>
 	* configure.in (all_loaders): Add tga loader, 
 	patch by Nicola Girardi. (#56067)
 
-Tue Aug 21 02:57:13 2001  Jonathan Blandford  <jrb@redhat.com>>
+Tue Aug 21 02:57:13 2001  Jonathan Blandford  <jrb@redhat.com>
 
 	* gtk/gtktreeview.c (gtk_tree_view_button_press): Fix up selection
 	a little.  More needs to be done tomorrow.

ChangeLog.pre-2-2

@@ -1,3 +1,20 @@
+2001-09-07  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktextview.c (gtk_text_view_flush_scroll): update
+	adjustments after validating destination yrange; fixes #53918
+	(This may cause other issues, but I hope it won't)
+	
+2001-09-05  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktextbtree.c (_gtk_text_btree_delete): when merging end
+	line into start line, update the character counts in parent nodes; 
+	caused a bug when end and start line had different parent nodes.
+
+2001-08-30  Havoc Pennington  <hp@redhat.com>
+	
+	* gtk/gtktexttag.c (_gtk_text_attributes_fill_from_tags): add
+	assertion that tag is in a table
+
 Fri Sep  7 12:48:56 2001  Matthias Clasen  <matthiasc@poet.de>
 
 	* gdk/x11/gdkkeys-x11.c (get_direction): Don't call
@@ -466,7 +483,7 @@ Tue Aug 21 12:43:29 2001  Owen Taylor  <otaylor@redhat.com>
 	* configure.in (all_loaders): Add tga loader, 
 	patch by Nicola Girardi. (#56067)
 
-Tue Aug 21 02:57:13 2001  Jonathan Blandford  <jrb@redhat.com>>
+Tue Aug 21 02:57:13 2001  Jonathan Blandford  <jrb@redhat.com>
 
 	* gtk/gtktreeview.c (gtk_tree_view_button_press): Fix up selection
 	a little.  More needs to be done tomorrow.

ChangeLog.pre-2-4

@@ -1,3 +1,20 @@
+2001-09-07  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktextview.c (gtk_text_view_flush_scroll): update
+	adjustments after validating destination yrange; fixes #53918
+	(This may cause other issues, but I hope it won't)
+	
+2001-09-05  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktextbtree.c (_gtk_text_btree_delete): when merging end
+	line into start line, update the character counts in parent nodes; 
+	caused a bug when end and start line had different parent nodes.
+
+2001-08-30  Havoc Pennington  <hp@redhat.com>
+	
+	* gtk/gtktexttag.c (_gtk_text_attributes_fill_from_tags): add
+	assertion that tag is in a table
+
 Fri Sep  7 12:48:56 2001  Matthias Clasen  <matthiasc@poet.de>
 
 	* gdk/x11/gdkkeys-x11.c (get_direction): Don't call
@@ -466,7 +483,7 @@ Tue Aug 21 12:43:29 2001  Owen Taylor  <otaylor@redhat.com>
 	* configure.in (all_loaders): Add tga loader, 
 	patch by Nicola Girardi. (#56067)
 
-Tue Aug 21 02:57:13 2001  Jonathan Blandford  <jrb@redhat.com>>
+Tue Aug 21 02:57:13 2001  Jonathan Blandford  <jrb@redhat.com>
 
 	* gtk/gtktreeview.c (gtk_tree_view_button_press): Fix up selection
 	a little.  More needs to be done tomorrow.

ChangeLog.pre-2-6

@@ -1,3 +1,20 @@
+2001-09-07  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktextview.c (gtk_text_view_flush_scroll): update
+	adjustments after validating destination yrange; fixes #53918
+	(This may cause other issues, but I hope it won't)
+	
+2001-09-05  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktextbtree.c (_gtk_text_btree_delete): when merging end
+	line into start line, update the character counts in parent nodes; 
+	caused a bug when end and start line had different parent nodes.
+
+2001-08-30  Havoc Pennington  <hp@redhat.com>
+	
+	* gtk/gtktexttag.c (_gtk_text_attributes_fill_from_tags): add
+	assertion that tag is in a table
+
 Fri Sep  7 12:48:56 2001  Matthias Clasen  <matthiasc@poet.de>
 
 	* gdk/x11/gdkkeys-x11.c (get_direction): Don't call
@@ -466,7 +483,7 @@ Tue Aug 21 12:43:29 2001  Owen Taylor  <otaylor@redhat.com>
 	* configure.in (all_loaders): Add tga loader, 
 	patch by Nicola Girardi. (#56067)
 
-Tue Aug 21 02:57:13 2001  Jonathan Blandford  <jrb@redhat.com>>
+Tue Aug 21 02:57:13 2001  Jonathan Blandford  <jrb@redhat.com>
 
 	* gtk/gtktreeview.c (gtk_tree_view_button_press): Fix up selection
 	a little.  More needs to be done tomorrow.

ChangeLog.pre-2-8

@@ -1,3 +1,20 @@
+2001-09-07  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktextview.c (gtk_text_view_flush_scroll): update
+	adjustments after validating destination yrange; fixes #53918
+	(This may cause other issues, but I hope it won't)
+	
+2001-09-05  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktextbtree.c (_gtk_text_btree_delete): when merging end
+	line into start line, update the character counts in parent nodes; 
+	caused a bug when end and start line had different parent nodes.
+
+2001-08-30  Havoc Pennington  <hp@redhat.com>
+	
+	* gtk/gtktexttag.c (_gtk_text_attributes_fill_from_tags): add
+	assertion that tag is in a table
+
 Fri Sep  7 12:48:56 2001  Matthias Clasen  <matthiasc@poet.de>
 
 	* gdk/x11/gdkkeys-x11.c (get_direction): Don't call
@@ -466,7 +483,7 @@ Tue Aug 21 12:43:29 2001  Owen Taylor  <otaylor@redhat.com>
 	* configure.in (all_loaders): Add tga loader, 
 	patch by Nicola Girardi. (#56067)
 
-Tue Aug 21 02:57:13 2001  Jonathan Blandford  <jrb@redhat.com>>
+Tue Aug 21 02:57:13 2001  Jonathan Blandford  <jrb@redhat.com>
 
 	* gtk/gtktreeview.c (gtk_tree_view_button_press): Fix up selection
 	a little.  More needs to be done tomorrow.

docs/reference/gtk/tmpl/gtk-unused.sgml

@@ -1646,13 +1646,6 @@ arrow.
 @show_toggle_indicator: unused
 @show_submenu_indicator: whether to show the arrow or not
 
-<!-- ##### MACRO gtk_notebook_set_page ##### -->
-<para>
-</para>
-
-@notebook: 
-@page_num: 
-
 <!-- ##### FUNCTION gtk_object_arg_get ##### -->
 <para>
 Private function to get an argument and argument info from an object.
@@ -2370,14 +2363,6 @@ fundamental type.
 @window: 
 @Returns: 
 
-<!-- ##### FUNCTION gtk_window_get_resizeable ##### -->
-<para>
-
-</para>
-
-@window: 
-@Returns: 
-
 <!-- ##### FUNCTION gtk_window_set_decorations_hint ##### -->
 <para>
 
@@ -2394,12 +2379,3 @@ fundamental type.
 @window: 
 @functions: 
 
-<!-- ##### FUNCTION gtk_window_set_resizeable ##### -->
-<para>
-
-</para>
-
-@window: 
-@setting: 
-@resizeable: 
-

docs/reference/gtk/tmpl/gtkmenu.sgml

@@ -96,9 +96,9 @@ Creates a new #GtkMenu.
 Adds a new #GtkMenuItem to the end of the menu's item list.
 </para>
 
+<!-- # Unused Parameters # -->
 @menu: a #GtkMenu.
 @child: The #GtkMenuItem to add.
-<!-- # Unused Parameters # -->
 @m: 
 @c: 
 
@@ -108,8 +108,8 @@ Adds a new #GtkMenuItem to the end of the menu's item list.
 Adds a new #GtkMenuItem to the beginning of the menu's item list.
 </para>
 
-@menu_child: 
 <!-- # Unused Parameters # -->
+@menu_child: 
 @m: 
 @c: 
 @menu: a #GtkMenu.
@@ -122,10 +122,10 @@ Adds a new #GtkMenuItem to the menu's item list at the position
 indicated by @position. 
 </para>
 
+<!-- # Unused Parameters # -->
 @menu: a #GtkMenu.
 @child: The #GtkMenuItem to add.
 @pos: 
-<!-- # Unused Parameters # -->
 @position: The position in the item list where @child is added.
 Positions are numbered from 0 to n-1.
 

docs/reference/gtk/tmpl/gtknotebook.sgml

@@ -132,6 +132,15 @@ Deprecated compatibility macro.
 @Returns: 
 
 
+<!-- ##### MACRO gtk_notebook_set_page ##### -->
+<para>
+</para>
+
+<!-- # Unused Parameters # -->
+@notebook: 
+@page_num: 
+
+
 <!-- ##### FUNCTION gtk_notebook_next_page ##### -->
 <para>
 </para>

docs/reference/gtk/tmpl/gtkwindow.sgml

@@ -128,6 +128,26 @@ the child gets a larger allocation than it requests.
 it's larger
 
 
+<!-- ##### FUNCTION gtk_window_set_resizeable ##### -->
+<para>
+
+</para>
+
+@window: 
+@setting: 
+<!-- # Unused Parameters # -->
+@resizeable: 
+
+
+<!-- ##### FUNCTION gtk_window_get_resizeable ##### -->
+<para>
+
+</para>
+
+@window: 
+@Returns: 
+
+
 <!-- ##### FUNCTION gtk_window_add_accel_group ##### -->
 <para>
 

gtk/gtktextbtree.c

@@ -102,7 +102,12 @@ struct _NodeData {
   gint height;
   gint width : 24;
 
-  /* boolean indicating whether the height/width need to be recomputed */
+  /* boolean indicating whether the lines below this node are in need of validation.
+   * However, width/height should always represent the current total width and
+   * max height for lines below this node; the valid flag indicates whether the
+   * width/height on the lines needs recomputing, not whether the totals
+   * need recomputing.
+   */
   gint valid : 8;
 };
 
@@ -573,6 +578,9 @@ _gtk_text_btree_delete (GtkTextIter *start,
 
   tree = _gtk_text_iter_get_btree (start);
  
+  if (gtk_debug_flags & GTK_DEBUG_TEXT)
+    _gtk_text_btree_check (tree);
+  
   {
     /*
      * The code below is ugly, but it's needed to make sure there
@@ -611,7 +619,7 @@ _gtk_text_btree_delete (GtkTextIter *start,
           }
 
         tags = _gtk_text_btree_get_tags (end,
-                                        &array_size);
+                                         &array_size);
 
         if (tags != NULL)
           {
@@ -701,6 +709,9 @@ _gtk_text_btree_delete (GtkTextIter *start,
               for (node = curnode; node != NULL;
                    node = node->parent)
                 {
+                  /* Don't update node->num_chars, because
+                   * that was done when we deleted the segments.
+                   */
                   node->num_lines -= 1;
                 }
 
@@ -791,21 +802,32 @@ _gtk_text_btree_delete (GtkTextIter *start,
     {
       BTreeView *view;
       GtkTextBTreeNode *ancestor_node;
-
       GtkTextLine *prevline;
+      int chars_moved;      
 
+      /* last_seg was appended to start_line up at the top of this function */
+      chars_moved = 0;
       for (seg = last_seg; seg != NULL;
            seg = seg->next)
         {
+          chars_moved += seg->char_count;
           if (seg->type->lineChangeFunc != NULL)
             {
               (*seg->type->lineChangeFunc)(seg, end_line);
             }
         }
+
+      for (node = start_line->parent; node != NULL;
+           node = node->parent)
+        {
+          node->num_chars += chars_moved;
+        }
+      
       curnode = end_line->parent;
       for (node = curnode; node != NULL;
            node = node->parent)
         {
+          node->num_chars -= chars_moved;
           node->num_lines--;
         }
       curnode->num_children--;
@@ -881,6 +903,9 @@ _gtk_text_btree_delete (GtkTextIter *start,
           view = view->next;
         }
 
+      /* avoid dangling pointer */
+      deleted_lines = NULL;
+      
       gtk_text_btree_rebalance (tree, curnode);
     }
 

gtk/gtktexttag.c

@@ -1945,6 +1945,7 @@ _gtk_text_attributes_fill_from_tags (GtkTextAttributes *dest,
       GtkTextTag *tag = tags[n];
       GtkTextAttributes *vals = tag->values;
 
+      g_assert (tag->table != NULL);
       if (n > 0)
         g_assert (tags[n]->priority > tags[n-1]->priority);
 

gtk/gtktextview.c

@@ -288,6 +288,7 @@ static void gtk_text_view_queue_scroll           (GtkTextView   *text_view,
                                                   gdouble        yalign);
 
 static gboolean gtk_text_view_flush_scroll       (GtkTextView *text_view);
+static void     gtk_text_view_update_adjustments (GtkTextView *text_view);
 
 /* Container methods */
 static void gtk_text_view_add    (GtkContainer *container,
@@ -1233,6 +1234,8 @@ gtk_text_view_get_line_at_y (GtkTextView *text_view,
 static gboolean
 set_adjustment_clamped (GtkAdjustment *adj, gdouble val)
 {
+  DV (g_print ("  Setting adj to raw value %g\n", val));
+  
   /* We don't really want to clamp to upper; we want to clamp to
      upper - page_size which is the highest value the scrollbar
      will let us reach. */
@@ -1244,6 +1247,7 @@ set_adjustment_clamped (GtkAdjustment *adj, gdouble val)
 
   if (val != adj->value)
     {
+      DV (g_print ("  Setting adj to clamped value %g\n", val));
       gtk_adjustment_set_value (adj, val);
       return TRUE;
     }
@@ -1306,7 +1310,7 @@ gtk_text_view_scroll_to_iter (GtkTextView   *text_view,
   
   if (!GTK_WIDGET_MAPPED (widget))
     {
-      g_warning ("%s: calling this function before mapping the GtkTextView doesn't make sense, maybe try gtk_text_view_scroll_to_mark() instead", G_STRLOC);
+      g_warning ("gtk_text_view_scroll_to_iter(): calling this function before showing the GtkTextView doesn't make sense, maybe try gtk_text_view_scroll_to_mark() instead");
       return FALSE;
     }
   
@@ -1314,6 +1318,8 @@ gtk_text_view_scroll_to_iter (GtkTextView   *text_view,
                                      iter,
                                      &rect);
 
+  DV (g_print (" target rect %d,%d  %d x %d\n", rect.x, rect.y, rect.width, rect.height));
+  
   current_x_scroll = text_view->xoffset;
   current_y_scroll = text_view->yoffset;
 
@@ -1380,6 +1386,8 @@ gtk_text_view_scroll_to_iter (GtkTextView   *text_view,
     {
       retval = set_adjustment_clamped (get_vadjustment (text_view),
                                        current_y_scroll + scroll_inc);
+
+      DV (g_print (" vert increment %d\n", scroll_inc));
     }
 
   /* Horizontal scroll */
@@ -1415,6 +1423,8 @@ gtk_text_view_scroll_to_iter (GtkTextView   *text_view,
     {
       retval = set_adjustment_clamped (get_hadjustment (text_view),
                                        current_x_scroll + scroll_inc);
+
+      DV (g_print (" horiz increment %d\n", scroll_inc));
     }
   
   if (retval)
@@ -1473,9 +1483,8 @@ gtk_text_view_queue_scroll (GtkTextView   *text_view,
 static gboolean
 gtk_text_view_flush_scroll (GtkTextView *text_view)
 {
-  GtkTextIter iter, start, end;
+  GtkTextIter iter;
   GtkTextPendingScroll *scroll;
-  gint y0, y1, height;
   gboolean retval;
   
   DV(g_print(G_STRLOC"\n"));
@@ -1490,23 +1499,17 @@ gtk_text_view_flush_scroll (GtkTextView *text_view)
   
   gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &iter, scroll->mark);
 
-  start = iter;
+  /* Validate arbitrary area around the scroll destination, so the adjustment
-  end = iter;
+   * can meaningfully point into that area
-
-  /* Force-validate the region around the iterator, at least the lines
-   * on either side, so that we can meaningfully get the iter location
    */
-  gtk_text_iter_backward_line (&start);
-  gtk_text_iter_forward_line (&end);
-  
-  gtk_text_layout_get_line_yrange (text_view->layout, &start, &y0, NULL);
-  gtk_text_layout_get_line_yrange (text_view->layout, &end, &y1, &height);
-
   DV(g_print (">Validating scroll destination ("G_STRLOC")\n"));
-  gtk_text_layout_validate_yrange (text_view->layout, &start, y0, y1 + height);
+  gtk_text_layout_validate_yrange (text_view->layout, &iter, -300, 300);
   
   DV(g_print (">Done validating scroll destination ("G_STRLOC")\n"));
 
+  /* Ensure we have updated width/height */
+  gtk_text_view_update_adjustments (text_view);
+  
   retval = gtk_text_view_scroll_to_iter (text_view,
                                          &iter,
                                          scroll->within_margin,
@@ -1524,7 +1527,7 @@ gtk_text_view_set_adjustment_upper (GtkAdjustment *adj, gdouble upper)
 {  
   if (upper != adj->upper)
     {
-      gdouble min = MAX (0., upper - adj->page_size);
+      gdouble min = MAX (0.0, upper - adj->page_size);
       gboolean value_changed = FALSE;
 
       adj->upper = upper;
@@ -1540,7 +1543,7 @@ gtk_text_view_set_adjustment_upper (GtkAdjustment *adj, gdouble upper)
       
       if (value_changed)
         {
-          DV(g_print(">Changed adj value because upper descreased ("G_STRLOC")\n"));
+          DV(g_print(">Changed adj value because upper decreased ("G_STRLOC")\n"));
           gtk_signal_emit_by_name (GTK_OBJECT (adj), "value_changed");
         }
     }
@@ -3709,6 +3712,10 @@ cursor_blinks (GtkTextView *text_view)
   GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (text_view));
   gboolean blink;
 
+#ifdef DEBUG_VALIDATION_AND_SCROLLING
+  return FALSE;
+#endif
+  
   g_object_get (G_OBJECT (settings), "gtk-cursor-blink", &blink, NULL);
   return blink;
 }
@@ -3776,10 +3783,6 @@ gtk_text_view_stop_cursor_blink (GtkTextView *text_view)
 static void
 gtk_text_view_check_cursor_blink (GtkTextView *text_view)
 {
-#ifdef DEBUG_VALIDATION_AND_SCROLLING
-  return;
-#endif
-
   if (text_view->layout != NULL &&
       text_view->cursor_visible &&
       GTK_WIDGET_HAS_FOCUS (text_view))
@@ -4001,6 +4004,7 @@ gtk_text_view_scroll_pages (GtkTextView *text_view,
     }
 
   gtk_text_layout_validate_yrange (text_view->layout, &anchor, y0, y1);
+  /* FIXME do we need to update the adjustment ranges here? */
   
   gtk_text_view_get_virtual_cursor_pos (text_view, &cursor_x_pos, &cursor_y_pos);
 

tests/testtext.c

@@ -191,6 +191,9 @@ msgbox_key_press_cb (GtkWidget *widget, GdkEventKey *event, gpointer data)
   return FALSE;
 }
 
+/* Don't copy this example, it's all crack-smoking - you can just use
+ * GtkMessageDialog now
+ */
 gint
 msgbox_run (GtkWindow  *parent,
 	    const char *message,
@@ -842,6 +845,35 @@ do_example (gpointer             callback_data,
   view_add_example_widgets (new_view);
 }
 
+
+static void
+do_insert_and_scroll (gpointer             callback_data,
+                      guint                callback_action,
+                      GtkWidget           *widget)
+{
+  View *view = view_from_widget (widget);
+  GtkTextBuffer *buffer;
+  GtkTextIter start, end;
+  GtkTextMark *mark;
+  
+  buffer = view->buffer->buffer;
+
+  gtk_text_buffer_get_bounds (buffer, &start, &end);
+  mark = gtk_text_buffer_create_mark (buffer, NULL, &end, /* right grav */ FALSE);
+
+  gtk_text_iter_backward_char (&end);
+  gtk_text_buffer_insert (buffer, &end,
+                          "Hello this is multiple lines of text\n"
+                          "Line 1\n"  "Line 2\n"
+                          "Line 3\n"  "Line 4\n"
+                          "Line 5\n",
+                          -1);
+
+  gtk_text_view_scroll_to_mark (GTK_TEXT_VIEW (view->text_view), mark,
+                                0, TRUE, 0.0, 1.0);
+  gtk_text_buffer_delete_mark (buffer, mark);
+}
+
 static void
 do_wrap_changed (gpointer             callback_data,
 		 guint                callback_action,
@@ -1268,6 +1300,7 @@ static GtkItemFactoryEntry menu_items[] =
   { "/Attributes/Properties",       NULL, do_properties, 0, NULL },
   { "/_Test",   	 NULL,         0,           0, "<Branch>" },
   { "/Test/_Example",  	 NULL,         do_example,  0, NULL },
+  { "/Test/_Insert and scroll", NULL,         do_insert_and_scroll,  0, NULL },
 };
 
 static gboolean