If it is valid, set the register `r0' to 1, else set it to 0.")
(defun string-utf-8-p (string)
- "Return non-nil iff STRING is a unibyte string of valid UTF-8 sequence."
+ "Return non-nil if STRING is a unibyte string of valid UTF-8 sequence."
(if (or (not (stringp string))
(multibyte-string-p string))
(error "Not a unibyte string: %s" string))