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Date:      Fri, 20 Jan 2023 23:24:12 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 268547] /bin/sh 'cd' should get user's home directory from password database if HOME is unset
Message-ID:  <bug-268547-227-L8rf8tt544@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-268547-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-268547-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D268547

--- Comment #3 from jschauma@netmeister.org ---
> The code looks reasonable, but I don't really understand the point. What =
use=20
> case is helped by this?=20

I had a scenario where a process had cleared its ENV
before changing eUID, and then did a 'cd'.

Yes, "well, don't do that", but it still took me by
surprise.

> Also note that this might use an unexpected directory=20
> if there are multiple /etc/passwd lines for the same UID.=20

True. Not much that can be done about that, I
suppose.=20

> Apart from that, if you want this fallback here, you'll also want it for =
tilde=20
> expansion without a user name (the tilde is currently left unchanged if H=
OME is=20
> not set or empty).

If there's interest in merging this change, then I can
take a look and update the diff. Otherwise, if folks
think it's not useful, no big deal.

--=20
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