Clean up merged branches with git branch --delete-merged

Git 2.56 adds git branch --delete-merged, so you can stop using this:

git branch --merged | grep -v "^\*\|main\|master" | xargs git branch -d

It deletes local branches whose work has already landed on the upstream they track:

git branch --dry-run --delete-merged origin  # preview
git branch --delete-merged origin

It’s also safer than the one-liner: it skips branches checked out in any worktree and any branch with branch.<name>.deleteMerged set to false. Docs