您还可以尝试使用Git别名。例如，在我的~/。gitconfig文件，我有一个看起来像这样的部分:

[alias]
        co = checkout

所以你可以输入git com <TAB>，这应该扩展到git co master，这是git checkout命令。

我也遇到了这个问题，并提出了这个代码片段。这将自动为您提供所有别名的补全。在声明所有(或任何)别名后运行它。

# wrap_alias takes three arguments:
# $1: The name of the alias
# $2: The command used in the alias
# $3: The arguments in the alias all in one string
# Generate a wrapper completion function (completer) for an alias
# based on the command and the given arguments, if there is a
# completer for the command, and set the wrapper as the completer for
# the alias.
function wrap_alias() {
  [[ "$#" == 3 ]] || return 1

  local alias_name="$1"
  local aliased_command="$2"
  local alias_arguments="$3"
  local num_alias_arguments=$(echo "$alias_arguments" | wc -w)

  # The completion currently being used for the aliased command.
  local completion=$(complete -p $aliased_command 2> /dev/null)

  # Only a completer based on a function can be wrapped so look for -F
  # in the current completion. This check will also catch commands
  # with no completer for which $completion will be empty.
  echo $completion | grep -q -- -F || return 0

  local namespace=alias_completion::

  # Extract the name of the completion function from a string that
  # looks like: something -F function_name something
  # First strip the beginning of the string up to the function name by
  # removing "* -F " from the front.
  local completion_function=${completion##* -F }
  # Then strip " *" from the end, leaving only the function name.
  completion_function=${completion_function%% *}

  # Try to prevent an infinite loop by not wrapping a function
  # generated by this function. This can happen when the user runs
  # this twice for an alias like ls='ls --color=auto' or alias l='ls'
  # and alias ls='l foo'
  [[ "${completion_function#$namespace}" != $completion_function ]] && return 0

  local wrapper_name="${namespace}${alias_name}"

  eval "
function ${wrapper_name}() {
  let COMP_CWORD+=$num_alias_arguments
  args=( \"${alias_arguments}\" )
  COMP_WORDS=( $aliased_command \${args[@]} \${COMP_WORDS[@]:1} )
  $completion_function
  }
"

  # To create the new completion we use the old one with two
  # replacements:
  # 1) Replace the function with the wrapper.
  local new_completion=${completion/-F * /-F $wrapper_name }
  # 2) Replace the command being completed with the alias.
  new_completion="${new_completion% *} $alias_name"

  eval "$new_completion"
}

# For each defined alias, extract the necessary elements and use them
# to call wrap_alias.
eval "$(alias -p | sed -e 's/alias \([^=][^=]*\)='\''\([^ ][^ ]*\) *\(.*\)'\''/wrap_alias \1 \2 '\''\3'\'' /')"

unset wrap_alias

另一个选项是使用~/。bash_completion文件。要创建git checkout的gco别名，只需输入以下内容:

_xfunc git __git_complete gco _git_checkout

然后在~/。Bashrc你只需要输入别名本身:

alias gco='git checkout'

两行。就是这样。

解释:

~/bash_completion在主bash_completion脚本的末尾被引用。在gentoo中，我在/usr/share/bash-completion/bash_completion中找到了主脚本。

_xfunc git位负责为您获取git完成文件，因此您不需要在~/.bashrc中放入任何其他内容。

接受的答案要求您复制.git- complete .sh并从~/中获取它。bashrc文件，我发现蹩脚。

PS:我仍在努力弄清楚如何不将整个git-completion脚本源到我的bash环境中。如果你找到了方法，请评论或编辑。

如果你使用别名g='git'，我将这行代码添加到.bash_aliases中

complete -o default -o nospace -F _git g

首先，查找原始的补全命令。例子:

$ complete | grep git

complete -o bashdefault -o default -o nospace -F __git_wrap__git_main git

现在将这些添加到你的启动脚本(例如~/.bashrc):

# copy the original statement, but replace the last command (git) with your alias (g)
complete -o bashdefault -o default -o nospace -F __git_wrap__git_main g

# load dynamically loaded completion functions (may not be required)
_completion_loader git

可能不需要_completion_loader行。但是对于某些情况，补全函数只在您第一次键入命令并按下TAB之后才会动态加载。因此，如果你没有使用原始命令，并尝试alias + TAB，你可能会得到一个错误，如“bash: completion: function '_docker' not found”。

您还可以尝试使用Git别名。例如，在我的~/。gitconfig文件，我有一个看起来像这样的部分:

[alias]
        co = checkout

所以你可以输入git com <TAB>，这应该扩展到git co master，这是git checkout命令。