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(char-bytes 2248) ⇒ 2 (char-bytes 65) ⇒ 1 (char-bytes 192) ⇒ 1
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(split-char 2248) ⇒ (latin-iso8859-1 72) (split-char 65) ⇒ (ascii 65)
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(make-char 'latin-iso8859-1) ⇒ 2176 (char-valid-p 2176) ⇒ nil (split-char 2176) ⇒ (latin-iso8859-1 0)