Mac系统按tab键git自动补齐

如果你用的是zsh

curl https://raw.githubusercontent.com/git/git/master/contrib/completion/git-completion.zsh -o ~/.git-completion.zsh
curl https://raw.githubusercontent.com/git/git/master/contrib/completion/git-completion.bash -o ~/.git-completion.bash
mkdir -p ~/.zsh/functions && cp ~/.git-completion.zsh ~/.zsh/functions/_git

在~/.zshrc中添加：

zstyle ':completion:*:*:git:*' script ~/.git-completion.bash
# `compinit` scans $fpath, so do this before calling it.
fpath=(~/.zsh/functions $fpath)
autoload -Uz compinit && compinit

参考：
https://stackoverflow.com/questions/28028740/git-tab-completion-in-zsh-throwing-errors

如果你用的是bash：

curl https://raw.githubusercontent.com/git/git/master/contrib/completion/git-completion.bash -o ~/.git-completion.bash

在~/.bash_profile中添加：

if [ -f ~/.git-completion.bash ]; then
    . ~/.git-completion.bash
fi

source ~/.bash_profile