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Date: Fri, 3 Feb 2006 11:45:01 -0800
From: Danek Duvall <duvall@comfychair.org>
To: Peter Stephenson <pws@csr.com>
Cc: Zsh hackers list <zsh-workers@sunsite.dk>
Subject: Re: PATCH: _hosts
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	Peter Stephenson <pws@csr.com>,
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On Fri, Feb 03, 2006 at 03:46:08PM +0000, Peter Stephenson wrote:

> I've also made the function search ~/.ssh/known_hosts for host names
> (and strip out IPv4 dot addresses).
>
> [ ... ]
>
>     sed -e '/^[0-9]*\.[0-9]*\.[0-9]*\.[0-9]/d' -e 's/[ ,].*//p' ~/.ssh/known_hosts

Might want to strip out IPv6 addresses as well:

  -e '/^[0-9a-f]\{0,4\}:/d'

And I'm not sure I see what the "/p" is doing there, other than doubling
each entry.  Would

    ${${${(u)${(f)"$(<~/.ssh/known_hosts)"}%%[ ,]*}:#(#s)[0-9]##.[0-9]##.[0-9]##.[0-9]##(#e)}:#(#s)[0-9a-f:]##(#e)}

be any better (if more arcane)?

Danek