Initialize Zsh completions
Follow the instructions for your preferred Zsh plugin manager to install as a plugin.
To install manually, first clone the repo:
git clone https://github.com/zshzoo/completion ${ZDOTDIR:-~}/.zplugins/completion
Then, in your .zshrc, add the following line:
source ${ZDOTDIR:-~}/.zplugins/completion/completion.zsh