破折号在“ git开关”中是什么意思 - ？

Question

进行结帐时，我收到了此消息：

$ git checkout HEAD~2
Note: switching to 'HEAD~2'.

You are in a 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits that you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

git Switch中的破折号是什么意思 -？它总是以前的分支吗？

Answer 1

git switch 表示以下内容：

您可以使用@{ - n}语法来参考n-th-th-then branch/commits切换到使用“ git switch”或“ > git Checkout“操作。您也可以指定-，它代表@{ - 1}。这通常用于在两个分支之间快速切换，或者错误地撤消分支开关。

因此，-等效于@{ - 1}，它代表使用git Switch选择的最后一个提交或git Checkout >。