[BUG]: completions not working

[JamesBrosy]

Version v0.5.4 OS Linux

Describe the bug I use yum package manager and I find the rpm package has some problems which cause completion not working.

Well, bash completion should be found in folder /usr/share/bash-completion/completions and zsh version should be in /usr/share/zsh/site-functions/ and the scripts in the folder vendor-completions usually are not executed because it's not in the environment variable fpath.

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