Diff folders inside the same commit

I'd like to do something like this with libgit2sharp:

git diff --no-index folderA/src folderB/src  > diffBetweenAandB.diff

which gets the diff between folderA and folderB regardless of its branch or tag. Just diff what is on disk.

Currently it is only possible to show changes between the working directory and the index.

v libgit2sharp.0.27.0-preview-0175

首先检查 libgit2sharp 现有的用于比较工作目录与索引的 API，以及它表示 diff 结果的方式。定义一个用于比较磁盘上两个文件夹的入口点，使其独立于分支或标签，然后验证它是否为 folderA/src 和 folderB/src 生成所请求的 diff。