git diff的/a/b前缀是什么原因 [英] What is the reason for the /a /b prefixes of git diff

问题描述

我已经使用git几年了，一直想知道为什么git diff在修饰文件的名称前加上a/和b/.我希望最终会偶然发现一个有用的用例，但是直到现在，它总是很烦人，从来没有帮助.

I've been using git for some years now and always wondered why git diff prefixes the names of modified files with a/ and b/. I expected to eventually stumble upon a use-case where it is useful, but until now it was always annoying and never helpful.

这有什么用?为什么默认情况下启用此功能?在什么情况下有用?

What is it good for? Why is this enabled by default? In which situations is it useful?

推荐答案

如 diff man中所述页，a/et b/代表区分来源和目的地的前缀.

As mentioned in the diff man page, a/ et b/ represent the prefix to differentiate source and destination.

实际上，您可以选择:

--no-prefix

不显示任何源或目标前缀.

Do not show any source or destination prefix.

--src-prefix=<prefix>

显示给定的源前缀，而不是"a/".

Show the given source prefix instead of "a/".

--dst-prefix=<prefix>

显示给定的目标前缀，而不是"b/"

Show the given destination prefix instead of "b/"

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