pub unsafe extern "C" fn gtk_text_view_set_gutter(
text_view: *mut GtkTextView,
win: GtkTextWindowType,
widget: *mut GtkWidget,
)
pub unsafe extern "C" fn gtk_text_view_set_gutter(
text_view: *mut GtkTextView,
win: GtkTextWindowType,
widget: *mut GtkWidget,
)