79 lines
3.2 KiB
Markdown
79 lines
3.2 KiB
Markdown
# Homebrew Shell Completion
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Homebrew comes with completion definitions for the `brew` command. Some packages also provide completion definitions for their own programs.
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`zsh`, `bash` and `fish` are currently supported.
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You must then configure your shell to enable its completion support. This is because the Homebrew-managed completions are stored under `HOMEBREW_PREFIX` which your system shell may not be aware of, and since it is difficult to automatically configure `bash` and `zsh` completions in a robust manner, the Homebrew installer does not do it for you.
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Shell completions for external Homebrew commands are not automatically installed. To opt-in to using completions for external commands (if provided), they need to be linked to `HOMEBREW_PREFIX` by running `brew completions link`.
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## Configuring Completions in `bash`
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To make Homebrew's completions available in `bash`, you must source the definitions as part of your shell's startup. Add the following to your `~/.bash_profile` (or, if it doesn't exist, `~/.profile`):
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```sh
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if type brew &>/dev/null; then
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HOMEBREW_PREFIX="$(brew --prefix)"
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if [[ -r "${HOMEBREW_PREFIX}/etc/profile.d/bash_completion.sh" ]]; then
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source "${HOMEBREW_PREFIX}/etc/profile.d/bash_completion.sh"
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else
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for COMPLETION in "${HOMEBREW_PREFIX}/etc/bash_completion.d/"*; do
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[[ -r "$COMPLETION" ]] && source "$COMPLETION"
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done
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fi
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fi
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```
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If you install the `bash-completion` formula, this will automatically source the completions' initialisation script (so you do not need to follow the instructions in the caveats).
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If you are using the `bash` formula as your shell (i.e. `bash` >= v4) you should use the `bash-completion@2` formula instead.
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## Configuring Completions in `zsh`
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To make Homebrew's completions available in `zsh`, you must get the Homebrew-managed zsh site-functions on your `FPATH` before initialising `zsh`'s completion facility. Add the following to your `~/.zshrc` file:
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```sh
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if type brew &>/dev/null; then
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FPATH=$(brew --prefix)/share/zsh/site-functions:$FPATH
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autoload -Uz compinit
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compinit
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fi
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```
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This must be done before `compinit` is called. Note that if you are using Oh My Zsh, it will call `compinit` for you, so this must be done before you call `oh-my-zsh.sh`. This may be done by appending the following line to your `~/.zprofile` after Homebrew's initialization, instead of modifying your `~/.zshrc` as above:
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```sh
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FPATH=$(brew --prefix)/share/zsh/site-functions:$FPATH
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```
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You may also need to forcibly rebuild `zcompdump`:
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```sh
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rm -f ~/.zcompdump; compinit
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```
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Additionally, if you receive "zsh compinit: insecure directories" warnings when attempting to load these completions, you may need to run this:
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```sh
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chmod -R go-w "$(brew --prefix)/share"
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```
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## Configuring Completions in `fish`
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No configuration is needed if you're using Homebrew's `fish`. Friendly!
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If your `fish` is from somewhere else, add the following to your `~/.config/fish/config.fish`:
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```sh
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if test -d (brew --prefix)"/share/fish/completions"
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set -gx fish_complete_path $fish_complete_path (brew --prefix)/share/fish/completions
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end
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if test -d (brew --prefix)"/share/fish/vendor_completions.d"
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set -gx fish_complete_path $fish_complete_path (brew --prefix)/share/fish/vendor_completions.d
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end
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```
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