git - git diff HEAD 与 git diff --staged 之间有什么区别？

Question

git diff HEAD 和 git diff --staged 有什么区别？我都试过了，但都给出了相同的输出。

Answer 1

假设 git status 的输出:

$ git status
# On branch master
# Changes to be committed:
#   (use "git reset HEAD <file>..." to unstage)
#
#   new file:   y
#
# Changes not staged for commit:
#   (use "git add <file>..." to update what will be committed)
#   (use "git checkout -- <file>..." to discard changes in working directory)
#
#   modified:   x
#

如您所见，有一个文件已修改但尚未暂存提交，并且添加了一个准备提交的新文件。

git diff --staged 将仅显示对“暂存”区域中文件的更改。

git diff HEAD 将显示对跟踪文件的所有更改。如果您已暂存所有更改以供提交，那么这两个命令将输出相同的内容。