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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: A target that's even more bootstrap?
Date: Thu, 20 Jun 2019 19:46:38 +0300
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To: Lars Ingebrigtsen <larsi@gnus.org>
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In-reply-to: <m31rzoz0g3.fsf@gnus.org> (message from Lars Ingebrigtsen on Thu, 
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> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: emacs-devel@gnu.org
> Date: Thu, 20 Jun 2019 18:27:40 +0200
> 
> 	[ -d info ] && rmdir --ignore-fail-on-non-empty info
> 
> If that's non-supported syntax, we can just delete the line and let the
> directory live on.

I don't think it's portable enough.  AFAIK, it's specific to GNU
rmdir.