;; (memq (char-charset char) safe-charsets))
;; ;; We must find the encoded string of CHAR. But, just encoding
;; ;; CHAR will put extra control sequences (usually to designate
-;; ;; ASCII charaset) at the tail if type of CODING is ISO 2022.
+;; ;; ASCII charset) at the tail if type of CODING is ISO 2022.
;; ;; To exclude such tailing bytes, we at first encode one-char
;; ;; string and two-char string, then check how many bytes at the
;; ;; tail of both encoded strings are the same.