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From: Bart Schaefer <schaefer@brasslantern.com>
Message-Id: <160305083558.ZM9594@torch.brasslantern.com>
Date: Sat, 5 Mar 2016 08:35:57 -0800
In-Reply-To: <20160304121435.0d07611f@pwslap01u.europe.root.pri>
Comments: In reply to Peter Stephenson <p.stephenson@samsung.com>
        "Re: Empty $''" (Mar  4, 12:14pm)
References: <1533e4d3e82.cbf3800a134118.3897690426664036468@enosys.org> 
	<160303153436.ZM31948@torch.brasslantern.com> 
	<160303153647.ZM31964@torch.brasslantern.com> 
	<20160304103502.531f6bb9@pwslap01u.europe.root.pri> 
	<20160304121435.0d07611f@pwslap01u.europe.root.pri>
X-Mailer: OpenZMail Classic (0.9.2 24April2005)
To: zsh-workers@zsh.org
Subject: Re: Empty $''
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On Mar 4, 12:14pm, Peter Stephenson wrote:
} Subject: Re: Empty $''
}
} -    else
} +    else if (*strsub)
}  	strret = strsub;
} +    else {
} +	/* This ensures a $'' doesn't get elided. */
} +	strret = dupstring(nulstring);
} +    }

This looks fine; I wasn't sure whether (*strsub) was ever nonzero in
this case but it should be harmless to append a Nulstring to another
string (happens with e.g. foo"" already I think) so I took a shortcut.