Small function to improve and extend original zsh _hosts completion function.
The original zsh hosts completion is not extendable. And when you replace it with zstyle -e ':completion:*:hosts' hosts 'reply=(...)', all original completions should be represented too.
On the other hand, _hosts caches all hosts for autocompletion only once, and then uses it. And it's not so obvious how to reset it.
The hoco.zsh solves both _hosts flaws:
$HOCO_CACHE_AGE period, the default is 10 minutes$HOCO_FUNCTIONS array is executed asynchronously. The list of hosts for completion is updated on readiness.The only thing you need to do is:
source hoco.zsh
some-function() {
echo host1 host2 # it does not matter if hosts are separated by spaces
echo host3 host4 # or by new lines (LF), or by tabs
}
HOCO_FUNCTIONS=(some-function)
ssh <tab>
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