2003-01-07  Matthias Clasen  <maclas@gmx.de>

	* gtk/gtktextview.h (struct _GtkTextView): Add a comment that
	the just_selected_element is unused.

	* gtk/gtktextview.c (extend_selection): New helper function to
	find the range that should be added to the selection.
	(selection_motion_event_handler):
	(gtk_text_view_start_selection_drag):
	(gtk_text_view_end_selection_drag):
	(selection_motion_event_handler):
	(selection_scan_timeout): Support select-by-words/lines.
	(gtk_text_view_button_press_event): Start a selection drag on
	double/triple clicks.  (#78599)