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

先檢查 libgit2sharp 現有用於比較工作目錄與索引的 API，以及它表示 diff 結果的方式。定義一個用於比較磁碟上兩個資料夾的進入點，使其獨立於分支或標籤，然後驗證它是否為 folderA/src 和 folderB/src 產生所要求的 diff。