(info "(coreutils) tr invocation") says Currently ‘tr’ fully supports only single-byte characters. Eventually it will support multibyte characters; when it does, the ‘-C’
And the man page has no warning at all. #BUG. Please add one. BTW, $ echo 哇|tr 哇 123 123 It works fine! (People will think.) Therefore be sure to mention just when it will start failing, with real examples, $ echo 哇|tr 哇 1 111 $ echo 哇|tr 哇 1234 123 $ echo 哇哇|tr 哇 1234 123123 $ echo 哇哇姑五湖|tr 哇 1234 1231231__五湖 $ echo "22°56'52.2\"N 121°14'09.3\"E" | tr ° d 22dd56'52.2"N 121dd14'09.3"E Also on the INFO page, give examples of, for the same input, what to expect now, and what to expect in the future.
