From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <zsh-workers-return-11225-mason-zsh=primenet.com.au@sunsite.auc.dk>
Received: (qmail 15459 invoked from network); 6 May 2000 08:13:08 -0000
Received: from sunsite.auc.dk (130.225.51.30)
  by ns1.primenet.com.au with SMTP; 6 May 2000 08:13:08 -0000
Received: (qmail 5344 invoked by alias); 6 May 2000 08:13:00 -0000
Mailing-List: contact zsh-workers-help@sunsite.auc.dk; run by ezmlm
Precedence: bulk
X-No-Archive: yes
X-Seq: 11225
Received: (qmail 5332 invoked from network); 6 May 2000 08:13:00 -0000
To: zsh-workers@sunsite.auc.dk
Subject: another optional argument problem?
MIME-Version: 1.0 (generated by SEMI 1.13.7 - "Awazu")
Content-Type: text/plain; charset=US-ASCII
From: Tanaka Akira <akr@m17n.org>
Date: 06 May 2000 17:14:01 +0900
Message-ID: <hvoaei4nliu.fsf@serein.m17n.org>
User-Agent: T-gnus/6.14.1 (based on Gnus v5.8.3) (revision 16) SEMI/1.13.7 (Awazu) FLIM/1.13.2 (Kasanui) Emacs/20.6 (i686-pc-linux-gnu) MULE/4.0 (HANANOEN)

Z(5):akr@serein% Src/zsh -f  
serein% bindkey -e; autoload -U compinit; compinit -D; compdef _tst tst
serein% _tst () { _arguments -s '-o::o:(o)' ':a:(a)' }
serein% tst -o<TAB>

It should inseart a space, I think.
-- 
Tanaka Akira