Homebrew Rewrite git history

script.sh

## extract Formula
git filter-branch -f --prune-empty \
  --subdirectory-filter 'Library' \
  -- --all
git filter-branch -f --prune-empty \
  --index-filter \
  'git rm --cached --ignore-unmatch -r -q -- . ; git reset -q $GIT_COMMIT -- Formula Aliases;' \
  -- --al
  
## extract core
git filter-branch -f --prune-empty \
  --index-filter \
  'git rm --cached --ignore-unmatch -r -q -- Library/Formula Library/Aliases ;' \
  -- --all

## rewrite commit history
git filter-branch -f \
  --msg-filter 'sed -E -e "s/ (#[0-9]+)/ Homebrew\/homebrew\1/g"' \
  -- --all