How to split every commit by file?

Question

I know how to manually split a commit using git rebase -i, but how can I automatically split every commit in a branch by file?

For instance, commit

Answer 1

For every commit, you would need

• first to list all files in that commit

  git diff-tree --no-commit-id --name-only -r 
  

• then for each file, extract that file

  git show :/path/within/repo/to/file
  

Do that in a working tree of a dedicated branch, and for every file extracted, add and commit.

Then you can reset your current branch by that new one built commit-file by commit-file.