git pull / stash 与 git 过滤器冲突

Question

这个问题是关于将 git 与nbstripout过滤器一起使用，它会在将 jupyter notebook（一个 JSON 文件）存储在 git 下之前从其中删除一些字段。当多个开发人员使用同一个笔记本时，剥离过滤器用于最小化冲突。

所以repo配置开始：

$ cat .git/config
[core]
        repositoryformatversion = 0
        filemode = true
        bare = false
        logallrefupdates = true
[remote "origin"]
        url = git@github.com:stas00/fastai_v1.git
        fetch = +refs/heads/*:refs/remotes/origin/*
[branch "master"]
        remote = origin
        merge = refs/heads/master
[include]
        path = ../.gitconfig

$ cat .gitconfig
[filter "nbstripout"]
        clean = nbstripout
        smudge = cat
        required = true
[diff "ipynb"]
        textconv = nbstripout -t

$ cat .gitattributes
*.ipynb filter=nbstripout

*.ipynb diff=ipynb

在使用此配置期间git diff或git commit笔记本通过过滤器运行时，该过滤器会删除本地的 json 字段（如单元格的execution_count），并且会因开发人员而异。

现在考虑一个正常情况，即同一笔记本在上游和本地发生变化。尝试将本地存储库与上游同步失败：

$ git pull origin master
From github.com:stas00/fastai_v1
 * branch            master     -> FETCH_HEAD
Updating 1ea49ad..ae0ba93
error: Your local changes to the following files would be overwritten by merge:
        dev_nb/004_callbacks.ipynb
Please commit your changes or stash them before you merge.
Aborting

$ git diff dev_nb/004_callbacks.ipynb | wc -l
60

$ git stash
Saved working directory and index state WIP on pull-merge: 1ea49ad Console progress bar

$ git diff dev_nb/004_callbacks.ipynb | wc -l
0

$ git pull origin master
From github.com:stas00/fastai_v1
 * branch            master     -> FETCH_HEAD
Updating 1ea49ad..ae0ba93
error: Your local changes to the following files would be overwritten by merge:
        dev_nb/004_callbacks.ipynb
Please commit your changes or stash them before you merge.
Aborting

这不应该发生，因为git stash应该隐藏所有本地更改。我不太确定到底发生了什么，但我认为git stash也可以通过过滤器运行，它只隐藏通过 nbstripout 过滤器显示的更改。所以也许git stash并没有完全将文件带到修改前的状态？然而，在我禁用过滤器之后，git diff什么也没有显示（在禁用它之前也没有）。

换句话说，为什么会git pull看到潜在的冲突并且不会合并，即使git diff显示不存在本地更改（但实际上确实存在，它们只是通过过滤器剥离的更改）。

至少我希望git diff在禁用剥离过滤器后显示更改，但事实并非如此。

为了完成这项git stash; gist pull工作，我必须在运行之前禁用过滤器git stash。

$ nbstripout --uninstall

$ git stash
Saved working directory and index state WIP on pull-merge: 1ea49ad Console progress bar

$ git pull origin master
remote: Counting objects: 3, done.
remote: Compressing objects: 100% (1/1), done.
remote: Total 3 (delta 2), reused 3 (delta 2), pack-reused 0
Unpacking objects: 100% (3/3), done.
From github.com:stas00/fastai_v1
 * branch            master     -> FETCH_HEAD
   1ea49ad..ae0ba93  master     -> origin/master
Updating 1ea49ad..ae0ba93
Fast-forward
 dev_nb/004_callbacks.ipynb | 1268 ----------------------------------------------------------------------------------------------------------------------------------------
 1 file changed, 1268 deletions(-)

现在我必须记住重新启用过滤器：

$ nbstripout --install

是否有更好的工作流程不需要禁用/启用过滤器即可工作？