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Date:      Tue, 08 Jun 2021 07:52:07 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 256473] FreeBSD shells are case insensitive for character ranges
Message-ID:  <bug-256473-227-XUwaRVJGDl@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-256473-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-256473-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D256473

Stefan E=C3=9Fer <se@FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|New                         |Open
                 CC|                            |se@FreeBSD.org

--- Comment #1 from Stefan E=C3=9Fer <se@FreeBSD.org> ---
Please check your LANG (and possibly LC_CTYPE) setting.

There are many locales that do not follow the ASCII collating sequence A ..=
 Z
followed by a .. z. Very common is a sequence of: A a B b ... Z z - and that
includes all lower case letters except z within the range [A-Z].

Try with LANG set to "C" whether this gives the expected result.

Shell scripts that depend on a specific collating sequence should always re=
set
LANG and LC_CTYPE to default values (e.g. LANG=3DC and LC_CTYPE unset).

Interactive shells should be able to support LC_CTYPE=3DC to set the collat=
ing
sequence independently of LANG, but in my tests this is implemented to
different degrees in different shells.

Some shells do not even respect the collating sequence specified by LANG, a=
nd
bash is the one that appears to ignore both LANG and LC_CTYPE and to always=
 use
the ASCII collating sequence (or rather pure bytewise string comparison?).

The tcsh in FreeBSD uses only LANG and ignores LC_CTYPE to select the colla=
ting
sequence, btw.

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