fix other typo

2001-06-14  Havoc Pennington  <hp@redhat.com>

	* gtk/gtkwindow.c (window_group_cleanup_grabs): fix other typo

	* gtk/gtkwidget.c (gtk_widget_propagate_state): fix typo

	* gtk/gtktextbtree.c: don't leak node data all over the place.

	* demos/gtk-demo/main.c (main): create fontify tags for the right
	buffer

	* gtk/gtktextbuffer.c, gtk/gtktexttagtable.c: enhance docs
	to mention tags in the same table can't have the same name,
	suggested by Skip Montanaro

2001-06-11  Havoc Pennington  <hp@redhat.com>

	* gtk/gtktexttagtable.c (gtk_text_tag_table_add): improve warning
	for trying to add two tags with same name to the tag table

	* demos/gtk-demo/main.c (main): fix colors ;-)

14 files changed, 285 insertions, 54 deletions

diff --git a/ChangeLog b/ChangeLog
index b1691e5119..bc79d01023 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,25 @@
+2001-06-14  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtkwindow.c (window_group_cleanup_grabs): fix other typo
+
+	* gtk/gtkwidget.c (gtk_widget_propagate_state): fix typo
+
+	* gtk/gtktextbtree.c: don't leak node data all over the place.
+
+	* demos/gtk-demo/main.c (main): create fontify tags for the right
+	buffer
+
+	* gtk/gtktextbuffer.c, gtk/gtktexttagtable.c: enhance docs
+	to mention tags in the same table can't have the same name,
+	suggested by Skip Montanaro
+
+2001-06-11  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktexttagtable.c (gtk_text_tag_table_add): improve warning 
+	for trying to add two tags with same name to the tag table
+
+	* demos/gtk-demo/main.c (main): fix colors ;-)
+
 Fri Jun  8 17:56:52 2001  Owen Taylor  <otaylor@redhat.com>
 
 	* gtk/gtkwindow.[ch] gtk/gtkmain.c: Add a GtkWindowGroup struct
diff --git a/ChangeLog.pre-2-0 b/ChangeLog.pre-2-0
index b1691e5119..bc79d01023 100644
--- a/ChangeLog.pre-2-0
+++ b/ChangeLog.pre-2-0
@@ -1,3 +1,25 @@
+2001-06-14  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtkwindow.c (window_group_cleanup_grabs): fix other typo
+
+	* gtk/gtkwidget.c (gtk_widget_propagate_state): fix typo
+
+	* gtk/gtktextbtree.c: don't leak node data all over the place.
+
+	* demos/gtk-demo/main.c (main): create fontify tags for the right
+	buffer
+
+	* gtk/gtktextbuffer.c, gtk/gtktexttagtable.c: enhance docs
+	to mention tags in the same table can't have the same name,
+	suggested by Skip Montanaro
+
+2001-06-11  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktexttagtable.c (gtk_text_tag_table_add): improve warning 
+	for trying to add two tags with same name to the tag table
+
+	* demos/gtk-demo/main.c (main): fix colors ;-)
+
 Fri Jun  8 17:56:52 2001  Owen Taylor  <otaylor@redhat.com>
 
 	* gtk/gtkwindow.[ch] gtk/gtkmain.c: Add a GtkWindowGroup struct
diff --git a/ChangeLog.pre-2-10 b/ChangeLog.pre-2-10
index b1691e5119..bc79d01023 100644
--- a/ChangeLog.pre-2-10
+++ b/ChangeLog.pre-2-10
@@ -1,3 +1,25 @@
+2001-06-14  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtkwindow.c (window_group_cleanup_grabs): fix other typo
+
+	* gtk/gtkwidget.c (gtk_widget_propagate_state): fix typo
+
+	* gtk/gtktextbtree.c: don't leak node data all over the place.
+
+	* demos/gtk-demo/main.c (main): create fontify tags for the right
+	buffer
+
+	* gtk/gtktextbuffer.c, gtk/gtktexttagtable.c: enhance docs
+	to mention tags in the same table can't have the same name,
+	suggested by Skip Montanaro
+
+2001-06-11  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktexttagtable.c (gtk_text_tag_table_add): improve warning 
+	for trying to add two tags with same name to the tag table
+
+	* demos/gtk-demo/main.c (main): fix colors ;-)
+
 Fri Jun  8 17:56:52 2001  Owen Taylor  <otaylor@redhat.com>
 
 	* gtk/gtkwindow.[ch] gtk/gtkmain.c: Add a GtkWindowGroup struct
diff --git a/ChangeLog.pre-2-2 b/ChangeLog.pre-2-2
index b1691e5119..bc79d01023 100644
--- a/ChangeLog.pre-2-2
+++ b/ChangeLog.pre-2-2
@@ -1,3 +1,25 @@
+2001-06-14  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtkwindow.c (window_group_cleanup_grabs): fix other typo
+
+	* gtk/gtkwidget.c (gtk_widget_propagate_state): fix typo
+
+	* gtk/gtktextbtree.c: don't leak node data all over the place.
+
+	* demos/gtk-demo/main.c (main): create fontify tags for the right
+	buffer
+
+	* gtk/gtktextbuffer.c, gtk/gtktexttagtable.c: enhance docs
+	to mention tags in the same table can't have the same name,
+	suggested by Skip Montanaro
+
+2001-06-11  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktexttagtable.c (gtk_text_tag_table_add): improve warning 
+	for trying to add two tags with same name to the tag table
+
+	* demos/gtk-demo/main.c (main): fix colors ;-)
+
 Fri Jun  8 17:56:52 2001  Owen Taylor  <otaylor@redhat.com>
 
 	* gtk/gtkwindow.[ch] gtk/gtkmain.c: Add a GtkWindowGroup struct
diff --git a/ChangeLog.pre-2-4 b/ChangeLog.pre-2-4
index b1691e5119..bc79d01023 100644
--- a/ChangeLog.pre-2-4
+++ b/ChangeLog.pre-2-4
@@ -1,3 +1,25 @@
+2001-06-14  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtkwindow.c (window_group_cleanup_grabs): fix other typo
+
+	* gtk/gtkwidget.c (gtk_widget_propagate_state): fix typo
+
+	* gtk/gtktextbtree.c: don't leak node data all over the place.
+
+	* demos/gtk-demo/main.c (main): create fontify tags for the right
+	buffer
+
+	* gtk/gtktextbuffer.c, gtk/gtktexttagtable.c: enhance docs
+	to mention tags in the same table can't have the same name,
+	suggested by Skip Montanaro
+
+2001-06-11  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktexttagtable.c (gtk_text_tag_table_add): improve warning 
+	for trying to add two tags with same name to the tag table
+
+	* demos/gtk-demo/main.c (main): fix colors ;-)
+
 Fri Jun  8 17:56:52 2001  Owen Taylor  <otaylor@redhat.com>
 
 	* gtk/gtkwindow.[ch] gtk/gtkmain.c: Add a GtkWindowGroup struct
diff --git a/ChangeLog.pre-2-6 b/ChangeLog.pre-2-6
index b1691e5119..bc79d01023 100644
--- a/ChangeLog.pre-2-6
+++ b/ChangeLog.pre-2-6
@@ -1,3 +1,25 @@
+2001-06-14  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtkwindow.c (window_group_cleanup_grabs): fix other typo
+
+	* gtk/gtkwidget.c (gtk_widget_propagate_state): fix typo
+
+	* gtk/gtktextbtree.c: don't leak node data all over the place.
+
+	* demos/gtk-demo/main.c (main): create fontify tags for the right
+	buffer
+
+	* gtk/gtktextbuffer.c, gtk/gtktexttagtable.c: enhance docs
+	to mention tags in the same table can't have the same name,
+	suggested by Skip Montanaro
+
+2001-06-11  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktexttagtable.c (gtk_text_tag_table_add): improve warning 
+	for trying to add two tags with same name to the tag table
+
+	* demos/gtk-demo/main.c (main): fix colors ;-)
+
 Fri Jun  8 17:56:52 2001  Owen Taylor  <otaylor@redhat.com>
 
 	* gtk/gtkwindow.[ch] gtk/gtkmain.c: Add a GtkWindowGroup struct
diff --git a/ChangeLog.pre-2-8 b/ChangeLog.pre-2-8
index b1691e5119..bc79d01023 100644
--- a/ChangeLog.pre-2-8
+++ b/ChangeLog.pre-2-8
@@ -1,3 +1,25 @@
+2001-06-14  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtkwindow.c (window_group_cleanup_grabs): fix other typo
+
+	* gtk/gtkwidget.c (gtk_widget_propagate_state): fix typo
+
+	* gtk/gtktextbtree.c: don't leak node data all over the place.
+
+	* demos/gtk-demo/main.c (main): create fontify tags for the right
+	buffer
+
+	* gtk/gtktextbuffer.c, gtk/gtktexttagtable.c: enhance docs
+	to mention tags in the same table can't have the same name,
+	suggested by Skip Montanaro
+
+2001-06-11  Havoc Pennington  <hp@redhat.com>
+
+	* gtk/gtktexttagtable.c (gtk_text_tag_table_add): improve warning 
+	for trying to add two tags with same name to the tag table
+
+	* demos/gtk-demo/main.c (main): fix colors ;-)
+
 Fri Jun  8 17:56:52 2001  Owen Taylor  <otaylor@redhat.com>
 
 	* gtk/gtkwindow.[ch] gtk/gtkmain.c: Add a GtkWindowGroup struct
diff --git a/demos/gtk-demo/main.c b/demos/gtk-demo/main.c
index cfa26e687f..c2d1ed4f55 100644
--- a/demos/gtk-demo/main.c
+++ b/demos/gtk-demo/main.c
@@ -347,7 +347,7 @@ fontify ()
 	      tmp_iter = next_iter;
 	    }
 	  if (tag)
-	    gtk_text_buffer_apply_tag_by_name (info_buffer, tag, &start_iter, &tmp_iter);
+	    gtk_text_buffer_apply_tag_by_name (source_buffer, tag, &start_iter, &tmp_iter);
 
 	  start_iter = tmp_iter;
 	  start_ptr = end_ptr;
@@ -637,13 +637,14 @@ create_text (GtkTextBuffer **buffer,
 				       GTK_SHADOW_IN);
   
   text_view = gtk_text_view_new ();
-  gtk_container_add (GTK_CONTAINER (scrolled_window), text_view);
   
   *buffer = gtk_text_buffer_new (NULL);
   gtk_text_view_set_buffer (GTK_TEXT_VIEW (text_view), *buffer);
   gtk_text_view_set_editable (GTK_TEXT_VIEW (text_view), FALSE);
   gtk_text_view_set_cursor_visible (GTK_TEXT_VIEW (text_view), FALSE);
 
+  gtk_container_add (GTK_CONTAINER (scrolled_window), text_view);
+  
   if (is_source)
     {
       font_desc = pango_font_description_from_string ("Courier 12");
@@ -770,28 +771,28 @@ main (int argc, char **argv)
                                     "font", "Sans 18",
                                     NULL);
 
-  tag = gtk_text_buffer_create_tag (info_buffer, "comment",
-				    "foreground", "blue",
-                                    NULL);
-  tag = gtk_text_buffer_create_tag (info_buffer, "type",
+  tag = gtk_text_buffer_create_tag (source_buffer, "comment",
 				    "foreground", "red",
                                     NULL);
-  tag = gtk_text_buffer_create_tag (info_buffer, "string",
-				    "foreground", "SpringGreen3",
+  tag = gtk_text_buffer_create_tag (source_buffer, "type",
+				    "foreground", "ForestGreen",
+                                    NULL);
+  tag = gtk_text_buffer_create_tag (source_buffer, "string",
+				    "foreground", "RosyBrown",
 				    "weight", PANGO_WEIGHT_BOLD,
                                     NULL);
-  tag = gtk_text_buffer_create_tag (info_buffer, "control",
+  tag = gtk_text_buffer_create_tag (source_buffer, "control",
 				    "foreground", "purple",
                                     NULL);
-  tag = gtk_text_buffer_create_tag (info_buffer, "preprocessor",
+  tag = gtk_text_buffer_create_tag (source_buffer, "preprocessor",
 				    "style", PANGO_STYLE_OBLIQUE,
  				    "foreground", "burlywood4",
                                     NULL);
-  tag = gtk_text_buffer_create_tag (info_buffer, "function",
+  tag = gtk_text_buffer_create_tag (source_buffer, "function",
 				    "weight", PANGO_WEIGHT_BOLD,
  				    "foreground", "DarkGoldenrod4",
                                     NULL);
-
+  
   gtk_window_set_default_size (GTK_WINDOW (window), 600, 400);
   gtk_widget_show_all (window);
   
diff --git a/docs/reference/gtk/tmpl/gtkwidget.sgml b/docs/reference/gtk/tmpl/gtkwidget.sgml
index 8d5161e332..b581073286 100644
--- a/docs/reference/gtk/tmpl/gtkwidget.sgml
+++ b/docs/reference/gtk/tmpl/gtkwidget.sgml
@@ -1564,6 +1564,14 @@ GtkWidget
 
 @widget: the object which received the signal.
 
+<!-- ##### SIGNAL GtkWidget::grab-notify ##### -->
+<para>
+
+</para>
+
+@widget: the object which received the signal.
+@arg1: 
+
 <!-- ##### SIGNAL GtkWidget::hide ##### -->
 <para>
 
diff --git a/gtk/gtktextbtree.c b/gtk/gtktextbtree.c
index a10baa9481..40e6ca022c 100644
--- a/gtk/gtktextbtree.c
+++ b/gtk/gtktextbtree.c
@@ -280,6 +280,8 @@ static void                  gtk_text_btree_node_remove_view         (BTreeView
                                                                       gpointer          view_id);
 static void                  gtk_text_btree_node_destroy             (GtkTextBTree     *tree,
                                                                       GtkTextBTreeNode *node);
+static void                  gtk_text_btree_node_free_empty          (GtkTextBTree *tree,
+                                                                      GtkTextBTreeNode *node);
 static NodeData         *    gtk_text_btree_node_ensure_data         (GtkTextBTreeNode *node,
                                                                       gpointer          view_id);
 static void                  gtk_text_btree_node_remove_data         (GtkTextBTreeNode *node,
@@ -736,7 +738,7 @@ _gtk_text_btree_delete (GtkTextIter *start,
                   prevnode->next = curnode->next;
                 }
               parent->num_children--;
-              g_free (curnode);
+              gtk_text_btree_node_free_empty (tree, curnode);
               curnode = parent;
             }
           curnode = curline->parent;
@@ -1361,7 +1363,7 @@ _gtk_text_btree_add_view (GtkTextBTree *tree,
   GtkTextLineData *line_data;
 
   g_return_if_fail (tree != NULL);
-
+  
   view = g_new (BTreeView, 1);
 
   view->view_id = layout;
@@ -1390,14 +1392,14 @@ _gtk_text_btree_add_view (GtkTextBTree *tree,
 
 void
 _gtk_text_btree_remove_view (GtkTextBTree *tree,
-                            gpointer view_id)
+                             gpointer      view_id)
 {
   BTreeView *view;
   GtkTextLine *last_line;
   GtkTextLineData *line_data;
 
   g_return_if_fail (tree != NULL);
-
+  
   view = tree->views;
 
   while (view != NULL)
@@ -1557,9 +1559,9 @@ queue_tag_redisplay (GtkTextBTree      *tree,
 
 void
 _gtk_text_btree_tag (const GtkTextIter *start_orig,
-                    const GtkTextIter *end_orig,
-                    GtkTextTag *tag,
-                    gboolean add)
+                     const GtkTextIter *end_orig,
+                     GtkTextTag        *tag,
+                     gboolean           add)
 {
   GtkTextLineSegment *seg, *prev;
   GtkTextLine *cleanupline;
@@ -1577,7 +1579,8 @@ _gtk_text_btree_tag (const GtkTextIter *start_orig,
   g_return_if_fail (GTK_IS_TEXT_TAG (tag));
   g_return_if_fail (_gtk_text_iter_get_btree (start_orig) ==
                     _gtk_text_iter_get_btree (end_orig));
-
+  g_return_if_fail (tag->table == _gtk_text_iter_get_btree (start_orig)->table);
+  
 #if 0
   printf ("%s tag %s from %d to %d\n",
           add ? "Adding" : "Removing",
@@ -4408,7 +4411,7 @@ static NodeData*
 node_data_new (gpointer view_id)
 {
   NodeData *nd;
-
+  
   nd = g_new (NodeData, 1);
 
   nd->view_id = view_id;
@@ -4423,7 +4426,6 @@ node_data_new (gpointer view_id)
 static void
 node_data_destroy (NodeData *nd)
 {
-
   g_free (nd);
 }
 
@@ -5113,6 +5115,16 @@ gtk_text_btree_node_destroy (GtkTextBTree *tree, GtkTextBTreeNode *node)
         }
     }
 
+  gtk_text_btree_node_free_empty (tree, node);
+}
+
+static void
+gtk_text_btree_node_free_empty (GtkTextBTree *tree,
+                                GtkTextBTreeNode *node)
+{
+  g_return_if_fail ((node->level > 0 && node->children.node == NULL) ||
+                    (node->level == 0 && node->children.line == NULL));
+
   summary_list_destroy (node->summary);
   node_data_list_destroy (node->node_data);
   g_free (node);
@@ -5410,8 +5422,9 @@ gtk_text_btree_rebalance (GtkTextBTree *tree,
                 {
                   tree->root_node = node->children.node;
                   tree->root_node->parent = NULL;
-                  summary_list_destroy (node->summary);
-                  g_free (node);
+
+                  node->children.node = NULL;
+                  gtk_text_btree_node_free_empty (tree, node);
                 }
               return;
             }
@@ -5515,8 +5528,10 @@ gtk_text_btree_rebalance (GtkTextBTree *tree,
               recompute_node_counts (tree, node);
               node->next = other->next;
               node->parent->num_children--;
-              summary_list_destroy (other->summary);
-              g_free (other);
+
+              other->children.node = NULL;
+              other->children.line = NULL;
+              gtk_text_btree_node_free_empty (tree, other);
               continue;
             }
 
diff --git a/gtk/gtktextbuffer.c b/gtk/gtktextbuffer.c
index 3a0a3d3f38..8606a08f44 100644
--- a/gtk/gtktextbuffer.c
+++ b/gtk/gtktextbuffer.c
@@ -458,7 +458,7 @@ gtk_text_buffer_real_insert_text (GtkTextBuffer *buffer,
 {
   g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
   g_return_if_fail (iter != NULL);
-
+  
   _gtk_text_btree_insert (iter, text, len);
 
   g_signal_emit (G_OBJECT (buffer), signals[CHANGED], 0);
@@ -511,7 +511,8 @@ gtk_text_buffer_insert (GtkTextBuffer *buffer,
   g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
   g_return_if_fail (iter != NULL);
   g_return_if_fail (text != NULL);
-
+  g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
+  
   gtk_text_buffer_emit_insert (buffer, iter, text, len);
 }
 
@@ -569,6 +570,7 @@ gtk_text_buffer_insert_interactive (GtkTextBuffer *buffer,
 {
   g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
   g_return_val_if_fail (text != NULL, FALSE);
+  g_return_val_if_fail (gtk_text_iter_get_buffer (iter) == buffer, FALSE);
 
   if (gtk_text_iter_editable (iter, default_editable))
     {
@@ -936,7 +938,8 @@ gtk_text_buffer_insert_range (GtkTextBuffer     *buffer,
                     gtk_text_iter_get_buffer (end));
   g_return_if_fail (gtk_text_iter_get_buffer (start)->tag_table ==
                     buffer->tag_table);  
-
+  g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
+  
   gtk_text_buffer_real_insert_range (buffer, iter, start, end, FALSE);
 }
 
@@ -1013,7 +1016,8 @@ gtk_text_buffer_insert_with_tags (GtkTextBuffer *buffer,
   g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
   g_return_if_fail (iter != NULL);
   g_return_if_fail (text != NULL);
-
+  g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
+  
   start_offset = gtk_text_iter_get_offset (iter);
 
   gtk_text_buffer_insert (buffer, iter, text, len);
@@ -1063,7 +1067,8 @@ gtk_text_buffer_insert_with_tags_by_name  (GtkTextBuffer *buffer,
   g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
   g_return_if_fail (iter != NULL);
   g_return_if_fail (text != NULL);
-
+  g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
+  
   start_offset = gtk_text_iter_get_offset (iter);
 
   gtk_text_buffer_insert (buffer, iter, text, len);
@@ -1174,7 +1179,9 @@ gtk_text_buffer_delete (GtkTextBuffer *buffer,
   g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
   g_return_if_fail (start != NULL);
   g_return_if_fail (end != NULL);
-
+  g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
+  g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
+  
   gtk_text_buffer_emit_delete (buffer, start, end);
 }
 
@@ -1210,7 +1217,10 @@ gtk_text_buffer_delete_interactive (GtkTextBuffer *buffer,
   g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
   g_return_val_if_fail (start_iter != NULL, FALSE);
   g_return_val_if_fail (end_iter != NULL, FALSE);
+  g_return_val_if_fail (gtk_text_iter_get_buffer (start_iter) == buffer, FALSE);
+  g_return_val_if_fail (gtk_text_iter_get_buffer (end_iter) == buffer, FALSE);
 
+  
   gtk_text_buffer_begin_user_action (buffer);
   
   gtk_text_iter_order (start_iter, end_iter);
@@ -1341,7 +1351,9 @@ gtk_text_buffer_get_text (GtkTextBuffer      *buffer,
   g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
   g_return_val_if_fail (start != NULL, NULL);
   g_return_val_if_fail (end != NULL, NULL);
-
+  g_return_val_if_fail (gtk_text_iter_get_buffer (start) == buffer, NULL);
+  g_return_val_if_fail (gtk_text_iter_get_buffer (end) == buffer, NULL);
+  
   if (include_hidden_chars)
     return gtk_text_iter_get_text (start, end);
   else
@@ -1377,7 +1389,9 @@ gtk_text_buffer_get_slice (GtkTextBuffer      *buffer,
   g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
   g_return_val_if_fail (start != NULL, NULL);
   g_return_val_if_fail (end != NULL, NULL);
-
+  g_return_val_if_fail (gtk_text_iter_get_buffer (start) == buffer, NULL);
+  g_return_val_if_fail (gtk_text_iter_get_buffer (end) == buffer, NULL);
+  
   if (include_hidden_chars)
     return gtk_text_iter_get_slice (start, end);
   else
@@ -1392,7 +1406,7 @@ static void
 gtk_text_buffer_real_insert_pixbuf (GtkTextBuffer     *buffer,
                                     GtkTextIter       *iter,
                                     GdkPixbuf         *pixbuf)
-{
+{ 
   _gtk_text_btree_insert_pixbuf (iter, pixbuf);
 
   g_signal_emit (G_OBJECT (buffer), signals[CHANGED], 0);
@@ -1422,7 +1436,8 @@ gtk_text_buffer_insert_pixbuf         (GtkTextBuffer      *buffer,
   g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
   g_return_if_fail (iter != NULL);
   g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
-
+  g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
+  
   g_signal_emit (G_OBJECT (buffer), signals[INSERT_PIXBUF], 0,
                  iter, pixbuf);
 }
@@ -1469,6 +1484,7 @@ gtk_text_buffer_insert_child_anchor (GtkTextBuffer      *buffer,
   g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
   g_return_if_fail (iter != NULL);
   g_return_if_fail (GTK_IS_TEXT_CHILD_ANCHOR (anchor));
+  g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer);
   
   g_signal_emit (G_OBJECT (buffer), signals[INSERT_CHILD_ANCHOR], 0,
                  iter, anchor);
@@ -1494,7 +1510,8 @@ gtk_text_buffer_create_child_anchor (GtkTextBuffer *buffer,
   
   g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
   g_return_val_if_fail (iter != NULL, NULL);
-
+  g_return_val_if_fail (gtk_text_iter_get_buffer (iter) == buffer, NULL);
+  
   anchor = gtk_text_child_anchor_new ();
 
   gtk_text_buffer_insert_child_anchor (buffer, iter, anchor);
@@ -1559,13 +1576,15 @@ gtk_text_buffer_set_mark (GtkTextBuffer *buffer,
   GtkTextIter location;
   GtkTextMark *mark;
 
+  g_return_val_if_fail (gtk_text_iter_get_buffer (iter) == buffer, NULL);
+  
   mark = _gtk_text_btree_set_mark (get_btree (buffer),
-                                  existing_mark,
-                                  mark_name,
-                                  left_gravity,
-                                  iter,
-                                  should_exist);
-
+                                   existing_mark,
+                                   mark_name,
+                                   left_gravity,
+                                   iter,
+                                   should_exist);
+  
   if (_gtk_text_btree_mark_is_insert (get_btree (buffer), mark) ||
       _gtk_text_btree_mark_is_selection_bound (get_btree (buffer), mark))
     {
@@ -1659,8 +1678,8 @@ gtk_text_buffer_get_iter_at_mark (GtkTextBuffer *buffer,
   g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
 
   _gtk_text_btree_get_iter_at_mark (get_btree (buffer),
-                                   iter,
-                                   mark);
+                                    iter,
+                                    mark);
 }
 
 /**
@@ -1900,6 +1919,9 @@ gtk_text_buffer_place_cursor (GtkTextBuffer     *buffer,
  *
  * If @tag_name is %NULL, the tag is anonymous.
  *
+ * If @tag_name is non-%NULL, a tag called @tag_name must not already
+ * exist in the tag table for this buffer.
+ *
  * The @first_property_name argument and subsequent arguments are a list
  * of properties to set on the tag, as with g_object_set().
  *
@@ -1936,6 +1958,12 @@ gtk_text_buffer_real_apply_tag (GtkTextBuffer *buffer,
                                 const GtkTextIter *start,
                                 const GtkTextIter *end)
 {
+  if (tag->table != buffer->tag_table)
+    {
+      g_warning ("Can only apply tags that are in the tag table for the buffer");
+      return;
+    }
+  
   _gtk_text_btree_tag (start, end, tag, TRUE);
 }
 
@@ -1945,6 +1973,12 @@ gtk_text_buffer_real_remove_tag (GtkTextBuffer *buffer,
                                  const GtkTextIter *start,
                                  const GtkTextIter *end)
 {
+  if (tag->table != buffer->tag_table)
+    {
+      g_warning ("Can only remove tags that are in the tag table for the buffer");
+      return;
+    }
+  
   _gtk_text_btree_tag (start, end, tag, FALSE);
 }
 
@@ -2001,7 +2035,10 @@ gtk_text_buffer_apply_tag (GtkTextBuffer *buffer,
   g_return_if_fail (GTK_IS_TEXT_TAG (tag));
   g_return_if_fail (start != NULL);
   g_return_if_fail (end != NULL);
-
+  g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
+  g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
+  g_return_if_fail (tag->table == buffer->tag_table);
+  
   gtk_text_buffer_emit_tag (buffer, tag, TRUE, start, end);
 }
 
@@ -2028,7 +2065,10 @@ gtk_text_buffer_remove_tag (GtkTextBuffer *buffer,
   g_return_if_fail (GTK_IS_TEXT_TAG (tag));
   g_return_if_fail (start != NULL);
   g_return_if_fail (end != NULL);
-
+  g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
+  g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
+  g_return_if_fail (tag->table == buffer->tag_table);
+  
   gtk_text_buffer_emit_tag (buffer, tag, FALSE, start, end);
 }
 
@@ -2056,6 +2096,8 @@ gtk_text_buffer_apply_tag_by_name (GtkTextBuffer *buffer,
   g_return_if_fail (name != NULL);
   g_return_if_fail (start != NULL);
   g_return_if_fail (end != NULL);
+  g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
+  g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
 
   tag = gtk_text_tag_table_lookup (get_table (buffer),
                                    name);
@@ -2093,7 +2135,9 @@ gtk_text_buffer_remove_tag_by_name (GtkTextBuffer *buffer,
   g_return_if_fail (name != NULL);
   g_return_if_fail (start != NULL);
   g_return_if_fail (end != NULL);
-
+  g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
+  g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
+  
   tag = gtk_text_tag_table_lookup (get_table (buffer),
                                    name);
 
@@ -2144,6 +2188,8 @@ gtk_text_buffer_remove_all_tags (GtkTextBuffer     *buffer,
   g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
   g_return_if_fail (start != NULL);
   g_return_if_fail (end != NULL);
+  g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer);
+  g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer);
   
   first = *start;
   second = *end;
diff --git a/gtk/gtktexttagtable.c b/gtk/gtktexttagtable.c
index 710ac8dfa6..c85fbcd8a8 100644
--- a/gtk/gtktexttagtable.c
+++ b/gtk/gtktexttagtable.c
@@ -201,7 +201,9 @@ gtk_text_tag_table_get_property (GObject      *object,
  *
  * Add a tag to the table. The tag is assigned the highest priority
  * in the table.
- * 
+ *
+ * @tag must not be in a tag table already, and may not have
+ * the same name as an already-added tag.
  **/
 void
 gtk_text_tag_table_add (GtkTextTagTable *table,
@@ -211,10 +213,15 @@ gtk_text_tag_table_add (GtkTextTagTable *table,
 
   g_return_if_fail (GTK_IS_TEXT_TAG_TABLE (table));
   g_return_if_fail (GTK_IS_TEXT_TAG (tag));
-  g_return_if_fail (tag->name == NULL ||
-                    g_hash_table_lookup (table->hash, tag->name) == NULL);
   g_return_if_fail (tag->table == NULL);
 
+  if (tag->name && g_hash_table_lookup (table->hash, tag->name))
+    {
+      g_warning ("A tag named '%s' is already in the tag table.",
+                 tag->name);
+      return;
+    }
+  
   g_object_ref (G_OBJECT (tag));
 
   if (tag->name)
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 880d9e3159..262ff6deca 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -5293,7 +5293,7 @@ gtk_widget_propagate_state (GtkWidget           *widget,
     {
       gtk_widget_ref (widget);
       
-      if (!GTK_WIDGET_IS_SENSITIVE (widget) && GTK_HAS_GRAB (widget))
+      if (!GTK_WIDGET_IS_SENSITIVE (widget) && GTK_WIDGET_HAS_GRAB (widget))
 	gtk_grab_remove (widget);
       
       gtk_signal_emit (GTK_OBJECT (widget), widget_signals[STATE_CHANGED], old_state);
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index 197933d783..a9824890d7 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -3663,10 +3663,10 @@ window_group_cleanup_grabs (GtkWindowGroup *group,
   GSList *tmp_list;
   GSList *to_remove = NULL;
 
-  tmp_list = window_group->grabs;
+  tmp_list = group->grabs;
   while (tmp_list)
     {
-      if (gtk_widget_get_toplevel (tmp_list->data) == window)
+      if (gtk_widget_get_toplevel (tmp_list->data) == (GtkWidget*) window)
 	to_remove = g_slist_prepend (to_remove, g_object_ref (tmp_list->data));
       tmp_list = tmp_list->next;
     }