是否有可能针对标准输入对文件进行git-diff？ [英] Is it possible to git-diff a file against standard input?

问题描述

假设我正在编辑一个文件。如果我保存该文件， git-diff 会给我它相对于索引的改变。我希望在不保存文件的情况下获得相对于索引的更改 - 对于实时差异。

一种解决方案是将未保存的更改写入临时文件（即将文件保存到别处），将暂存文件写入另一个临时文件（ git show：file> tempfile2 ），然后 git-diff tempfile tempfile2 。然而，这似乎不雅。

有没有更好的方法？

解决方案

改进Ash Berlin的答案。

这可以让你使用git-diff的漂亮功能。

  git show：file | git diff --no-index  -   -  temp_saved_pa​​th 
  

请注意，这仍然可能不如你会喜欢，因为你仍然需要写入临时文件。在保存文件之前，所做的更改要么不在磁盘上（仅在内存中），要么在某种类型的临时文件中，这些文件是依赖于编辑器的。 Vim可能可以一步完成这项工作，但我还不够熟悉。

Let's say I'm editing a file. If I save the file, git-diff will give me its changes relative to the index. I'd like to get the changes relative to the index without saving the file first – for a "realtime" diff.

One solution is to write the unsaved changes to a temporary file (i.e. save the file elsewhere), write the staged file to another temporary file (git show :file > tempfile2) then git-diff tempfile tempfile2. However that seems inelegant.

Is there a better way?

解决方案

Improving upon Ash Berlin's answer.

This allows you to use the nice features of git-diff.

git show :file | git diff --no-index -- - temp_saved_path

Note that this still might not be as convenient as you'd like, because you still have to write to a temp file. Until you save the file, the changes are either not on disk at all (in-memory only), or in some kind of temporary file that is editor-dependent. It's possible that Vim could do this seamlessly in one step, but I'm not familiar enough to say.

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