A quick script to clean up Gerrit branches. I tend to have 1 branch per commit for Gerrit reviews, which means that after some time there are a ton of stale branches sitting around. This script examines all your branches, looking for ones which have a change-id that also exists in the current branch. If it has found such a commit, it prompts you…

gistfile1.sh

function git-branch-current() {
  printf "%s\n" $(git branch 2> /dev/null | grep -e ^* | tr -d "\* ")
}

function git-branch-cleanup() {                                                                                                             
  local currentBranch=$(git-branch-current)                                                                                                
  local otherBranch=                                                                                                                       
  for otherBranch in $(git branch | grep -v $currentBranch) ; do
    printf "Branch %s:\n" "$otherBranch"
    printf "  HEAD commit is: %s\n" "$(git log --oneline -n 1 $otherBranch)"
    local gerritChangeId=$(git log --format=full -n 1 $otherBranch | tail -1 | cut -d ':' -f 2)
    if ! [ "$gerritChangeId" ] ; then
      printf "  HEAD of %s does not have a Gerrit Change-Id\n" "$otherBranch"
      continue
    fi
    local mergedCommit=$(git log --oneline -n 1 --grep="$gerritChangeId" $currentBranch)
    if [ "$mergedCommit" ] ; then
      printf "  Commit merged to %s: %s\n" "$currentBranch" "$mergedCommit"
      local reply="n"
      read -p "  Delete branch? " reply
      if [ $reply = "y" ] ; then
        git branch -D $otherBranch
      fi
    else
      echo "  Branch unmerged, moving on"
    fi
  done
}