Mutli-email replacement for git commits.

git-author-rewrite.sh

#!/bin/sh

git filter-branch -f --env-filter $'
OLD_EMAILS="
oldaddress1@gmail.com
oldaddress2@gmail.com
"
CORRECT_NAME="New Name"
CORRECT_EMAIL="newname@gmail.com"
for EMAIL in ${OLD_EMAILS}; do
    if [ "$GIT_COMMITTER_EMAIL" = "$EMAIL" ]; then
        export GIT_COMMITTER_NAME="$CORRECT_NAME"
        export GIT_COMMITTER_EMAIL="$CORRECT_EMAIL"
    fi
    if [ "$GIT_AUTHOR_EMAIL" = "$EMAIL" ]; then
        export GIT_AUTHOR_NAME="$CORRECT_NAME"
        export GIT_AUTHOR_EMAIL="$CORRECT_EMAIL"
    fi
done
' --tag-name-filter cat -- --branches --tags

#git push --force --tags origin 'refs/heads/*'
#from https://help.github.com/articles/changing-author-info/