extract component as new repository with full history

COMPONENT_NAME=timepicker
GREP_E_MATCHER="(timepicker|other_string)"

TMP_BRANCH=$COMPONENT_NAME-tmp

git checkout -b $TMP_BRANCH

git filter-branch -f --prune-empty --index-filter 'git ls-files | grep -v -E "$GREP_E_MATCHER" | xargs git rm --cached --ignore-unmatch --quiet' HEAD

git checkout --orphan $COMPONENT_NAME

git rm --cached -r .
rm -f .gitignore
git clean -fd

for GIT_HASH in $(git log --reverse --pretty=format:"%H" --no-merges $TMP_BRANCH);
do
    DIFF=$(git diff $GIT_HASH)
    if [[ ! -z  $DIFF ]]; then
        echo
        echo "cherry-pick: $GIT_HASH"
        git log $GIT_HASH -n 1 --oneline
        git cherry-pick $GIT_HASH
    fi
done

git filter-branch -f --env-filter 'export GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"'