From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <zsh-users-return-21505-mason-zsh=primenet.com.au@zsh.org>
Received: (qmail 929 invoked by alias); 29 Apr 2016 15:35:12 -0000
Mailing-List: contact zsh-users-help@zsh.org; run by ezmlm
Precedence: bulk
X-No-Archive: yes
List-Id: Zsh Users List <zsh-users.zsh.org>
List-Post: <mailto:zsh-users@zsh.org>
List-Help: <mailto:zsh-users-help@zsh.org>
X-Seq: 21505
Received: (qmail 27664 invoked from network); 29 Apr 2016 15:35:09 -0000
X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on f.primenet.com.au
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham
	autolearn_force=no version=3.4.1
To: Zsh Users <zsh-users@zsh.org>
From: Paul Seyfert <pseyfert@mathphys.fsk.uni-heidelberg.de>
Subject: how to revert tab completion order in _arguments or _describe
X-Enigmail-Draft-Status: N1110
Message-ID: <572375FD.80200@mathphys.fsk.uni-heidelberg.de>
Date: Fri, 29 Apr 2016 16:55:57 +0200
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101
 Icedove/38.7.0
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit

Hi,

I wrote a small tab completion function
(https://github.com/pseyfert/lb-zsh/blob/master/_lb-run) to complete the
command
```
lb-run Bender <some_version_number> <some executable command>
```

I defined this with
```
_arguments '-l[list versions]' '1:project:($projects)' '2:version:->listversions' '3:command:->runnablestuff'
case $state in
  (runnablestuff)
    ### essentially _command_names -e
  (listversions)
    local -a versionlist
    # lb-dev -l querries for existing version numbers
    versionlist=($(lb-dev -l $line[1] | sed "s/ .*//" ))
    # versionlist is now a list of existing version numbers
    _describe 'project versions' versionlist
    ;;
esac
```

It reasonably works:
```
pseyfert@computer ~ > lb-run Bender v2<tab>
project versions:
v25r5p1  v25r7p3  v26r0    v26r2p1  v26r3p1  v27r0p1
v25r7p2  v25r7p4  v26r1    v26r3    v27r0    v28r0
```

One drawback though is that I'm usually most interested in the latest
version number but the menu completion starts with the oldest version
number (i think it's alphabetically ordered). Is there a way to tell the
_describe in the (listversions) state to cycle through the options in a
specific order? (actually i'm not bound to stick to _describe there, any
other function would be fine, too)

Thanks in advance,

Paul