Autoremove deleted and merged branches, locally and remotely.

.gitconfig

[alias]
    autoremove = "!f() { \
        whitelist=\"master|dev|legacy\"; \
        git fetch --prune; \
        if [ -z \"$1\" ]; then \
            list=$(git branch --merged | egrep -v \"(^\\*|$whitelist)\") && \
            cmd='echo \"$list\" | xargs -n 1 git branch -d'; \
        else \
            list=$(git branch -r --merged | grep \"$1\" | egrep -v \"(>|$whitelist)\") && \
            cmd='echo \"$list\" | cut -d'/' -f2- | xargs -n 1 git push \"$1\" --delete'; \
        fi; \
        echo \"On branch $(git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \\(.*\\)/\\1/'). \"; echo \"\"; \
        if [ -z \"$list\" ]; then \
            echo \"No branches to remove.\"; \
        else \
            echo \"Branches to remove:\"; echo \"$list\"; echo \"\"; \
            read -p 'Press enter to continue'; echo \" \"; \
            eval $cmd; \
        fi \
    }; f"
    autoremoveall = "!git remote | xargs -n 1 git autoremove; git autoremove"

Git autoremove

Git alias to remove deleted and merged branches. It works locally, with any specific remote or both.

It should be added to your .gitconfig aliases. You can inline as displayed above, or create a git-autoremove.sh script, add it to your path, and call it like so: autoremove = "!sh git-autoremove.sh".

Usage

First of all, make sure to edit the whitelist to match your own protected branches. Afterwards, go forth and clean up.

To delete local branches that have been deleted or merged:
git autoremove

To delete branches from a specific remote that have been deleted or merged:
git autoremove origin # or any other remote

Most often than not, you'll want to delete all deleted / merged branches, regardless if local or belonging to any remote:
git autoremoveall

Demo