Everyone should be using a UTF-8 locale nowadays. Not using one causes
issues like `brew doctor` failing while checking symbolic links that
point at file names with non-ASCII characters, since OS X always uses
Unicode for the file system.
Rely on `locale charmap` to detect the currently selected encoding and
if that's not UTF-8, override the user's choice (if any) by setting
`LC_ALL` to `en_US.UTF-8`, the assumption being that every system has a
usable `en_US.UTF-8` locale installed.
FixesHomebrew/homebrew#44744.
ClosesHomebrew/homebrew#47247.
Signed-off-by: Martin Afanasjew <martin@afanasjew.de>
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