+void _gtk_text_buffer_get_text_before (GtkTextBuffer *buffer,
+ AtkTextBoundary boundary_type,
+ GtkTextIter *position,
+ GtkTextIter *start,
+ GtkTextIter *end);
+void _gtk_text_buffer_get_text_at (GtkTextBuffer *buffer,
+ AtkTextBoundary boundary_type,
+ GtkTextIter *position,
+ GtkTextIter *start,
+ GtkTextIter *end);
+void _gtk_text_buffer_get_text_after (GtkTextBuffer *buffer,
+ AtkTextBoundary boundary_type,
+ GtkTextIter *position,
+ GtkTextIter *start,
+ GtkTextIter *end);
+