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Date: Thu, 2 Jun 2016 17:40:54 +0200
From: Remko Tronçon <>
To: Rich Felker <>
Subject: Re: How to set UTF-8 as default

Hi Rich,

Thanks for your explanation.

Just call setlocale(LC_CTYPE, ""). This is the only way a correct
> program should ever use setlocale.

So, if I understand correctly, any program that expects `nl_langinfo`
to return the locale set through environment variables (or other
platform-specific ways) should call setlocale(LC_*, "") before
querying the locale; libc/musl/... will not trigger this registration

NULL is not the same thing as "". Passing NULL as the second argument
> to setlocale simply queries the current locale name. It does not setup
> the locale.

Right, I was just pointing out that the locale I tried to set in env
variables wasn't
being reported as the current locale by setlocale().


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