GNU bug report logs - #75046
tr not convert UTF-8 characters

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Subject: tr not convert UTF-8 characters
From: Andrey Voronov <a.voronov@HIDDEN>
To: bug-coreutils@HIDDEN
Date: Mon, 23 Dec 2024 13:14:41 +0300
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Hello,

The tr utility can't to convert UTF-8 non-ASCII letters to the
uppercase. Particulare cyrillic word:

$ echo =D0=B7=D0=B5=D0=BB=D0=B5=D0=BD=D0=BE|tr '[:lower:]' '[:upper:]'
=D0=B7=D0=B5=D0=BB=D0=B5=D0=BD=D0=BE

While english lesson translation is correctly do the same:
$ echo green|tr '[:lower:]' '[:upper:]'
GREEN


God bless you