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From: dana <dana@dana.is>
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Subject: [BUG] Issue with _arguments !-x !+x
Message-Id: <BED65A01-95AA-473E-BCF8-3E5E19A66C7E@dana.is>
Date: Wed, 12 Feb 2020 16:57:33 -0600
To: Zsh hackers list <zsh-workers@zsh.org>
X-Mailer: Apple Mail (2.3445.104.11)

I noticed something unexpected when i have both !-x and !+x type option specs
and then i try to complete stacked options containing the -x ones:

  # Only !-x
  % _foo() { _arguments -s -S : -{a,b,c} \!-{d,e,f} }
  % compdef _foo foo
  % foo -ad<TAB>
  completing option:
  -b  -c
  % foo -da<TAB>
  completing option:
  -b  -c
  % foo -def<TAB>
  completing option:
  -a  -b  -c

  # Both !-x and !+x
  % _foo() { _arguments -s -S : -{a,b,c} \!-{d,e,f} \!+{d,e,f} }
  % compdef _foo foo
  % foo -ad<TAB>
  completing no arguments:
  % foo -da<TAB>
  completing option:
  -b  -c
  % foo -def<TAB>
  completing no arguments:

All i can figure out so far is that comparguments doesn't think there's
anything to complete. But i'm not sure why. Something to do with how ca_doff
is calculated, i think?

dana