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How to disable certain completion tags?
- X-seq: zsh-users 22468
- From: Martin Vaeth <martin@xxxxxxxx>
- To: zsh-users@xxxxxxx
- Subject: How to disable certain completion tags?
- Date: Thu, 16 Feb 2017 10:13:32 +0000 (UTC)
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- List-id: Zsh Users List <zsh-users.zsh.org>
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- Reply-to: martin@xxxxxxxx
I have written a completion for a complex command; calculating
completions for some options of this command needs a long time
(and produces a huge list).
Some of these options should share a common tag, and I want that the
user has a way to disable the completion of that tag so that the
long time is not required when the user presses tab accidentally
or if he uses something like https://github.com/hchbaw/auto-fu.zsh/
To my knowledge, it should be possible to use the tag mechanism
to achieve this, but it does not seem to work as I had understood it.
Here is a minimal example of a completion file demonstrating how
I attempt to achieve the goal with the tag name "foos" for the
command "dummy"; the "sleep" should indicate where the command
used in my actual code takes a long time.
#compdef dummy
local curcontext="$curcontext" state state_descr line expl
typeset -A opt_args
_arguments -C : '--foo=[desc]:some foo:->foo'
ret=$?
case $state in
(foo)
_tags foos
_tags && {
_description foos expl 'available foo'
compadd "$expl[@]" - $(sleep 5; echo foo1 foo2)
} && ret=0;;
esac
return ret
My understanding is that the second "_tags" should end with nonzero
state if the user has disabled all tags from the list (and the list
should consist only of "foos" due to the first "_tags foos" command).
However, if I (as user) attempt to disable the "foos" tag for the
"dummy" completion with something like
zstyle ':completion:*:*:dummy:*' tag-order ''
it does not show any effect. I think once (some years ago, I was now not
able to reproduce) I had found some zstyle command which disabled the
completion, but nevertheless "dummy foo=<tab>" had taken a long time
to complete (to nothing) with the above code.
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