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_arguments -s and mutually exclusive options

X-seq: zsh-users 5623
From: Doug Kearns <djkea2@xxxxxxxxxxxxxxxxxxxxxxx>
To: zsh-users@xxxxxxxxxx
Subject: _arguments -s and mutually exclusive options
Date: Thu, 2 Jan 2003 23:59:51 +1100
Mailing-list: contact zsh-users-help@xxxxxxxxxx; run by ezmlm

Hello all,

It appears that options specified as being mutually exclusive are not
honoured as such by _arguments if -s is used.

For example,

_arguments -s \
  '( -b )-a[option a]' \
  '( -a )-b[option b]' \
  '-c[option c]'

will, incorrectly, offer option 'b' as an available completion here

% blah -a<TAB>

but correctly, will not offer option 'b' here

% blah -a -<TAB>

Is this a bug or have I missed something relevant in the docs?

Thanks,
Doug

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