/**
* is_continuation - multibyte check
* @c: byte to check
+ * @tty: terminal device
*
* Returns true if the utf8 character 'c' is a multibyte continuation
* character and the terminal is in unicode mode.
* @cp: input chars
* @fp: flags for each char (if NULL, all chars are TTY_NORMAL)
* @count: number of input chars in @cp
+ * @flow: enable flow control
*
* Called by the terminal driver when a block of characters has
* been received. This function must be called from soft contexts