git add。，git add之间的区别
这个问题在这里已经有了答案：
git help add
-A, --all, --no-ignore-removal
Update the index not only where the working tree has a file matching <pathspec> but also where the index already has an
entry. This adds, modifies, and removes index entries to match the working tree.
If no <pathspec> is given, the current version of Git defaults to "."; in other words, update all files in the current
directory and its subdirectories. This default will change in a future version of Git, hence the form without <pathspec>
should not be used.
-u, --update
Update the index just where it already has an entry matching <pathspec>. This removes as well as modifies index entries to
match the working tree, but adds no new files.
If no <pathspec> is given, the current version of Git defaults to "."; in other words, update all tracked files in the
current directory and its subdirectories. This default will change in a future version of Git, hence the form without
<pathspec> should not be used.
. 如果没有给出<pathspec> （这是你的问题的情况），则由-A和-u暗示。 -A将暂存更改，删除文件和添加文件。 -u将暂存更改并删除文件，但不添加文件。 上一篇: Difference between git add ., git add
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