GNU bug report logs - #27785
doc: tr: mention parsing of 4 digits octal escape values

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From: =?utf-8?B?56mN5Li55bC8?= Dan Jacobson <jidanni@HIDDEN>
To: bug-coreutils@HIDDEN
Subject: tr: mention that leading zeros are a no-no in e.g., \0377
Date: Sat, 22 Jul 2017 08:44:31 +0800
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In (info "(coreutils) Character sets")

     =E2=80=98\OOO=E2=80=99
          The 8-bit character with the value given by OOO, which is 1 to
          3 octal digits.  Note that =E2=80=98\400=E2=80=99 is interprete=
d as the
          two-byte sequence, =E2=80=98\040=E2=80=99 =E2=80=980=E2=80=99.

It is very important to also add here:

          and \0377 is interpreted as \037 and 7.

(You add the quotes. I can't with my keyboard.)