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Document how to configure zsh completions on MacOS (#1285)

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Nick Kocharhook 2022-07-27 09:33:41 +01:00 committed by GitHub
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@ -2139,6 +2139,23 @@ The `just` binary can also generate the same completion scripts at runtime, usin
$ just --completions zsh > just.zsh
```
*macOS Note:* Recent versions of macOS use zsh as the default shell. If you use Homebrew to install `just`, it will automatically install the most recent copy of the zsh completion script in the Homebrew zsh directory, which the built-in version of zsh doesn't know about by default. It's best to use this copy of the script if possible, since it will be updated whenever you update `just` via Homebrew. Also, many other Homebrew packages use the same location for completion scripts, and the built-in zsh doesn't know about those either. To take advantage of `just` completion in zsh in this scenario, you can set `fpath` to the Homebrew location before calling `compinit`. Note also that Oh My Zsh runs `compinit` by default. So your `.zshrc` file could look like this:
```zsh
# Init Homebrew, which adds environment variables
eval "$(/opt/homebrew/bin/brew shellenv)"
fpath=($HOMEBREW_PREFIX/share/zsh/site-functions $fpath)
# Then choose one of these options:
# 1. If you're using Oh My Zsh, you can initialize it here
# source $ZSH/oh-my-zsh.sh
# 2. Otherwise, run compinit yourself
# autoload -U compinit
# compinit
```
### Grammar
A non-normative grammar of `justfile`s can be found in [GRAMMAR.md](https://github.com/casey/just/blob/master/GRAMMAR.md).