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Date: Sun, 23 Oct 2016 10:27:52 +0000
From: Daniel Shahaf <d.s@daniel.shahaf.name>
To: zsh-workers@zsh.org
Cc: Alex George <xzeroknightx@gmail.com>
Subject: Re: [BUG] _expand completer's all-expansions tag format style does
 not expand %o
Message-ID: <20161023102752.GA18933@fujitsu.shahaf.local2>
References: <CANKG6XqAmBFKHbmWjCGyNyXhU129p7eHLaF0oV9Ebk-a7=tmjw@mail.gmail.com>
 <161022214628.ZM7665@torch.brasslantern.com>
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Bart Schaefer wrote on Sat, Oct 22, 2016 at 21:46:28 -0700:
> As mentioned in users/21955, I don't understand why a single match was
> being excluded from the expansions tag but included in all-expansions?

To avoid redundancy?  When there's one match, without that condition
the [expansions] and [all-expansions] group would have exactly the same
matches.