TL;DR one-liner
echo 'autoload -Uz compinit && compinit' >> ~/.zshrc && . ~/.zshrc
this will enable completion in .zshrc and apply the setting to your current terminal session.
Explanation:
Actually, ZSH does know how to do git completion out of the box, but you need to turn on the completion feature itself (which from the steps you described I guess you haven’t done)
Adding this to your .zshrc should be enough:
autoload -Uz compinit && compinit
After you put the line .zshrc file, don’t forget to restart the shell for ZSH to pick up the new config (alternatively, you can execute the line in your current session, that’ll enable autocompletion for that one session)
the zsh compinit: insecure directories warning
Thanks to @FranMorzoa for suggesting to use compinit -u to skip the security checks for completion scripts
While this will get rid of the warning/confirmation, the warning is there for a reason and it shouldn’t happen normally.
It is a sign that something is wrong with ownership of the completion scripts, and it can (and should) be fixed with one of these:
-
brew.sh version:
chmod -R go-w "$(brew --prefix)/share" -
another one, will probably work for non-brew zsh, credits to pvinis on GitHub:
compaudit | xargs chmod g-w
More info
- https://git-scm.com/book/en/v2/Appendix-A:-Git-in-Other-Environments-Git-in-Zsh
- https://docs.brew.sh/Shell-Completion#configuring-completions-in-zsh
PS Another answer here suggests installing the hub tool instead: although the tool is handy, it’s merely a 3rd party (github community) wrapper around git. Hence, it has nothing to do with the topic of “Git completion in ZSH”