bash bash别名中的Git自动完成？

Git autocomplete in bash aliases?

提问by Claudio

I'm using goas a simple bash alias for git checkout branchname. The thing that I miss is the autocomplete feature that works with the full git checkout branchna...command, but not in the alias.

我go用作 .bash 的简单 bash 别名git checkout branchname。我想念的是与完整git checkout branchna...命令一起使用但不在别名中的自动完成功能。

Is there a way to instruct Bash to "inherit" the autocomplete "driver" for another command?

有没有办法指示 Bash 为另一个命令“继承”自动完成“驱动程序”？

采纳答案by Shawn Chin

If you can find out the completion function used by the original command, you can assign it to the alias using complete -F.

如果你能找出原命令使用的补全函数，你可以使用complete -F.

For example, on my ubuntu box, the completion function used by git checkoutis _git_checkout(found in /etc/bash_complete.d/git).

例如，在我的 ubuntu 盒子上，使用的完成函数git checkout是_git_checkout（在 中找到/etc/bash_complete.d/git）。

Example

例子

Before running complete -F:

运行前complete -F：

[me@home]$ git checkout <TAB><TAB>
HEAD            master          origin/HEAD     origin/master

[me@home]$ alias go="git checkout"

[me@home]$$ go <TAB><TAB>
.git/                precommit_config.py  README.md            SvnSentinel/         
.gitignore           precommit.py         startcommit.py       tests/ 

After:

后：

[me@home]$$ complete -F _git_checkout go

[me@home]$$ go <TAB><TAB>
HEAD            master          origin/HEAD     origin/master 

回答by theprogrammerin

After using complete -F:

使用后complete -F：

complete -F _git_checkout go

Tabbing after gomay result in:

在之后的选项卡go可能会导致：

bash: [: 1: unary operator expected

Instead of complete, use __git_complete

而不是complete，使用__git_complete

This is git bash completion's built-in function for this purpose.

这是用于此目的的 git bash 完成的内置函数。

After declaring your alias, bind the correct auto-complete function to it:

声明别名后，将正确的自动完成功能绑定到它：

alias g="git"
__git_complete g _git

alias go="git checkout"
__git_complete go _git_checkout

alias gp="git push"
__git_complete gp _git_push

回答by SeamusJ

In Ubuntu 16.04.3 LTS, the file I needed to source was /usr/share/bash-completion/completions/git. So in .bash_custom(or .bashrc, whatever):

在 Ubuntu 16.04.3 LTS 中，我需要获取的文件是/usr/share/bash-completion/completions/git. 所以在.bash_custom（或 .bashrc，无论如何）中：

[ -f /usr/share/bash-completion/completions/git ] && . /usr/share/bash-completion/completions/git
__git_complete g __git_main

回答by adamnfish

On Ubuntu 18.04 (Bionic) the following works. Add something like this snippet (with your aliases) to your preferred bash configuration file e.g. .bashrc, .bash_aliases.bash_profile.

在 Ubuntu 18.04 (Bionic) 上，以下工作正常。将类似此代码段的内容（使用您的别名）添加到您首选的 bash 配置文件中，例如.bashrc, .bash_aliases.bash_profile.

# define aliases
alias gc='git checkout'
alias gp='git pull'

# setup autocompletion
if [ -f "/usr/share/bash-completion/completions/git" ]; then
  source /usr/share/bash-completion/completions/git
  __git_complete gc _git_checkout
  __git_complete gp _git_pull
else
  echo "Error loading git completions"
fi

In general the format of the __git_completedirective is the following:

一般来说，__git_complete指令的格式如下：

__git_complete <YOUR ALIAS> _git_<GIT COMMAND NAME>

This combines wisdom from the existing answers in a single up-to-date answer, thank you all.

这将现有答案的智慧结合在一个最新的答案中，谢谢大家。

回答by yugr

To add to other excellent answers: normally you have a lot of Git aliases and it may be tedious to manually forward completions for all of them. Here's a small trick to do this automatically:

添加其他优秀答案：通常您有很多 Git 别名，手动转发所有这些别名可能很乏味。这是自动执行此操作的一个小技巧：

if [ -f "/usr/share/bash-completion/completions/git" ]; then
  # Enable Git completions for aliases
  . /usr/share/bash-completion/completions/git
  for a in $(alias | sed -n 's/^alias \(g[^=]*\)=.git .*//p'); do
    c=$(alias $a | sed 's/^[^=]*=.git \([a-z0-9\-]\+\).*//' | tr '-' '_')
    if set | grep -q "^_git_$c *()"; then
      eval "__git_complete $a _git_$c"
    fi
  done
fi

回答by Anthony Kong

For macOS, run the following to install bash completion

对于macOS，运行以下命令来安装 bash 完成

 brew install bash-completion

Then add the following

然后添加以下内容

[[ -r "/usr/local/etc/profile.d/bash_completion.sh" ]] && . "/usr/local/etc/profile.d/bash_completion.sh" 

to your .bashrc or .bash_profile

到您的 .bashrc 或 .bash_profile

回答by Mario Olivio Flores

On Linux Mint, this didn't work for me. I was getting bash: [: 1: unary operator expected .

在 Linux Mint 上，这对我不起作用。我得到了bash: [: 1: unary operator expected 。

I found the following response worked quite well - with the troubleshooting section the user provided to be quite helpful. https://superuser.com/questions/436314/how-can-i-get-bash-to-perform-tab-completion-for-my-aliases

我发现以下响应效果很好 - 用户提供的故障排除部分非常有帮助。 https://superuser.com/questions/436314/how-can-i-get-bash-to-perform-tab-completion-for-my-aliases