+/* wprintf callback, may be defined prior to include
+ or undefined and redefined later
+*/
+#ifndef wprintf_callback
+#define wprintf_callback(...) do { \
+ } while (0)
+#endif
+/* eprintf callback, may be defined prior to include
+ or undefined and redefined later
+*/
+#ifndef eprintf_callback
+#define eprintf_callback(...) do { \
+ } while (0)
+#endif
+
+/* Print a unicode string */