* indicates a failure on entry, the function will immediately return.
* On exit the value will indicate the success of the operation.
* Error: U_TRUNCATED_CHAR_FOUND
- * @return Pointer to the internal buffer
+ * @return Pointer to the internal buffer, NULL if EOF
*/
U_CAPI const UChar* U_EXPORT2
ucbuf_readline(UCHARBUF* buf,int32_t* len, UErrorCode* err);