Granularity types that extend the text selection. Use the "extend-selection" signal to customize the selection.

(define-g-enum "GtkTextExtendSelection" gtk-text-extend-selection
  (:export t
   :type-initializer "gtk_text_extend_selection_get_type")
  (:word 0)
  (:line 1))  

:word

Selects the current word. It is triggered by a double click for example.

:line

Selects the current line. It is triggered by a triple click for example.