* any such possibility, MODE_DUPLICATE should be used
* such that HarfBuzz makes a copy immediately,
*
- * - Use MODE_READONLY otherse, unless you really really
+ * - Use MODE_READONLY otherwise, unless you really really
* really know what you are doing,
*
* - MODE_WRITABLE is appropriate if you really made a
unsigned int length);
HB_EXTERN hb_blob_t *
+hb_blob_copy_writable_or_fail (hb_blob_t *blob);
+
+HB_EXTERN hb_blob_t *
hb_blob_get_empty (void);
HB_EXTERN hb_blob_t *