在PowerShell中为Windows使用Git时使用插入符号(^) [英] Using a caret(^) when using Git for Windows in PowerShell

问题描述

我正在使用PowerShell在命令行中使用git，而我正在尝试使用类似的东西

I'm using git at the command line with PowerShell, and I'm trying to use something like

git difftool HEAD^

Powershell似乎将其视为我键入的内容

Powershell seems to treat this as if I typed

git difftool HEAD

所以插入符号不见了.如果我使用插入符号的多个副本，则会收到一个奇怪的错误:

so the caret symbol is gone. If I use multiple copies of the caret, I get a weird error:

git difftool HEAD^^
fatal: ambiguous argument 'HEAD@set': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions

有趣的是，连续使用四个插入符号似乎可以减少到一个，因此git difftool HEAD^^^^的工作与我期望的git difftool HEAD^一样.

Interestingly, using four carets in a row seems to escape down to one, so git difftool HEAD^^^^ works as I expect git difftool HEAD^ to work.

我尝试用单引号，双引号，重音符号转义插入符号，似乎无济于事.

I've tried escaping the caret with single quotes, double quotes, grave accents, nothing seems to help.

这是PowerShell的功能，还是我的设置在某处错误?

Is this a feature of PowerShell, or is my setup wrong somewhere?

推荐答案

我发现了问题，这与我的设置有关:(

I found the problem, and it was with my setup :(

我正在使用Windows的Git，它在/bin文件夹中提供git.exe在/cmd文件夹中提供git.cmd. git.cmd是一个批处理脚本，其中包装了git.exe并执行其他一些操作.

I'm using Git for Windows, which provides git.exe in a /bin folder and git.cmd in a /cmd folder. git.cmd is a batch script which wraps git.exe and does some other stuff.

这两个目录都在我的PATH中，/cmd首先出现，因此当我键入git时，正在运行git.cmd.因为这是一个批处理脚本，所以不能使用插入号.在cmd世界中，通过键入两个(^^)可以使插入符号转义.

Both of these directories were in my PATH, with /cmd coming first, so when I typed git, git.cmd was being run. Because this was a batch script the caret could not be used. In the cmd world a caret is escaped by typing two of them (^^).

我猜想这是需要两次的，所以将四个插入号转义为两个，然后是一个(我不太了解).使用两个或三个插入符号时，我也看不懂错误消息.

I guess that this was somehow being required twice, so four carets would be escaped down to two, then one (I don't really understand this bit). I also don't understand the error message when two or three carets are used.

仅将Git for Windows与PowerShell一起使用时，才使用git.exe！

Only use git.exe when using Git for Windows with PowerShell!

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