GtkSourceView @sourceview: the object which received the signal. @sourceview: the object which received the signal. @Returns: @buffer: @Returns: @view: @show: @view: @Returns: @view: @show: @view: @Returns: @view: @width: @view: @Returns: @view: @enable: @view: @Returns: @view: @enable: @view: @Returns: @view: @enable: @view: @Returns: @view: @show: @view: @Returns: @view: @margin: @view: @Returns: @view: @show: @view: @Returns: @view: @marker_type: @pixbuf: @view: @marker_type: @Returns: @view: @enable: @view: @Returns: