pub unsafe extern "C" fn gtk_text_buffer_create_mark(
buffer: *mut GtkTextBuffer,
mark_name: *const c_char,
where_: *const GtkTextIter,
left_gravity: gboolean,
) -> *mut GtkTextMark
pub unsafe extern "C" fn gtk_text_buffer_create_mark(
buffer: *mut GtkTextBuffer,
mark_name: *const c_char,
where_: *const GtkTextIter,
left_gravity: gboolean,
) -> *mut GtkTextMark