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Re: completion but extra options allowed
- X-seq: zsh-workers 9719
- From: Sven Wischnowsky <wischnow@xxxxxxxxxxxxxxxxxxxxxxx>
- To: zsh-workers@xxxxxxxxxxxxxx
- Subject: Re: completion but extra options allowed
- Date: Mon, 14 Feb 2000 12:56:23 +0100 (MET)
- In-reply-to: "Bart Schaefer"'s message of Fri, 11 Feb 2000 17:55:55 +0000
- Mailing-list: contact zsh-workers-help@xxxxxxxxxxxxxx; run by ezmlm
[ moved to zsh-workers ]
Bart Schaefer wrote:
> ...
>
> Yes, I noticed just after posting that this isn't actually handled by
> _mutt and _mailboxes. In attempting to do something with this, I found
> some rather strange things going on in the guts of the completion.
>
> _mutt calls _arguments in the expected way.
>
> _arguments calls "_description arguments expl mailbox" which sets expl
> to (-J -default-).
>
> _arguments then calls "_mailboxes -J -default-" which (after setting up
> the cache) calls "_wanted files expl 'mailbox specification'" which again
> sets expl to (-J -default-).
>
> _mailboxes then calls "compadd -J -default- -J -default- - ..." which
> seems a bit odd. The first -J -default- is from "$@" and the second is
> of course "$expl[@]". Is that really doing the right thing?
1) Depending of the setting of the group-name style you may have gotten
different names.
2) Yes, that's ok. The _description in _mailboxes sets up a default
description that may be overridden by a calling function.
3) Depending on the implementors preferences, he may or may not change
the '-f+:mailbox:_mailboxes' to '-f+:mailbox: _mailboxes', which will
make _arguments *not* give a description to _mailboxes (i.e., then you
only get the second one).
In another message:
> ...
>
> One thing that makes this difficult is that _path_files does not accept
> the -i option of compadd, only the -P option.
All completion I can think of are written so that they work nicely
when PREFIX/IPREFIX (and SUFFIX/ISUFFIX) are set up appropriately.
> However, even calling
>
> compadd -i + -f -W ~/Mail
>
> directly does not accomplish what I expected it to. Is this a bug, or am
> I missing something? What IS the compadd equivalent of
>
> compctl -x 's[+] c[-1,-f],s[-f+]' -W ~/Mail -f ...
-i just *adds* some string to IPREFIX. It is really only useful when
used with -U, i.e. by functions that have to do all the matching
themselves (because then IPREFIX isn't used by the completion code and
-i can be used to tell it about an ignored prefix).
So, the right way to do the same as that compctl would be:
if compset -P '+|-f+' || [[ $words[CURRENT-1] = -f ]]; then
_files -W ~/Mail
else
...
fi
where the compset sets up PREFIX/IPREFIX for us.
Bye
Sven
--
Sven Wischnowsky wischnow@xxxxxxxxxxxxxxxxxxxxxxx
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