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Date: Mon, 10 Aug 2015 12:33:55 +0200
From: Moritz Bunkus <moritz@bunkus.org>
To: zsh-workers@zsh.org
Subject: ssh host completion: ~/.ssh/config vs /etc/hosts
Message-ID: <20150810103355.GH4077@bunkus.org>
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Hey,

zsh 5.0.8

I just noticed this interesting thing: if certain hosts are listed in
/etc/hosts then the ssh completion will complete _but not list_ hosts in
~/.ssh/config that have the same prefix.

For example, let's take the following entries from /etc/hosts:

172.16.1.2 testme-backup
172.16.1.3 testme-vcenter

Let's assume further that I also have the following in my ~/.ssh/config:

Host testme-nagios
  HostName 172.16.1.4

Host other-master
  HostName 172.16.2.1

Host other-backup
  HostName 162.16.2.2

Now typing =C2=BBssh testme-<TAB>=C2=AB will list testme-backup and
testme-vcenter but not testme-nagios. Typing =C2=BBssh testme-n<TAB>=C2=AB,
however, will compelte to =C2=BBssh testme-nagios=C2=AB.

On the other hand typing =C2=BBssh other-<TAB>=C2=AB will list both entries=
 from
~/.ssh/config, other-master and other-backup. There are no entries in
/etc/hosts that start with other-.

Here's how to reproduce it:

1. Create the appropriate entries in /etc/hosts and ~/.ssh/config.

2. Start a shell and initialize the completion system:

zsh -f
autoload -Uz compinit
compinit

3. Try to complete =C2=BBssh testme-=C2=AB and observe the bug.

Kind regards,
mosu

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