* @ink_rect: ink rectangle to assign to each character
* @logical_rect: logical rectangle to assign to each character
* @data: user data pointer
- * @copy_func: function to copy @data when the attribute
- * is copied. If %NULL, @data is simply copied
- * as a pointer.
- * @destroy_func: function to free @data when the attribute
- * is freed, or %NULL
+ * @copy_func: (allow-none): function to copy @data when the
+ * attribute is copied. If %NULL, @data is simply
+ * copied as a pointer.
+ * @destroy_func: (allow-none): function to free @data when the
+ * attribute is freed, or %NULL
*
* Like pango_attr_shape_new(), but a user data pointer is also
* provided; this pointer can be accessed when later