Prune merged git branches from local and remote

gprune.sh

# Prune merged git branches from local and remote
# example usage: gprune 8.x-1.x
gprune() {

  DEFAULT_BRANCH=master
  PROTECTED_BRANCH_PATTERN='|master|releases|7.x.*|8.x.*'


  # Allow the base branch to be passed in as 1st param.
  base_branch=${1-$DEFAULT_BRANCH}
  echo "Base branch:              $base_branch"
  
  # Regex for protected branches.
  protected_branches=$base_branch$PROTECTED_BRANCH_PATTERN
  echo "Protected branches regex: $protected_branches"

  # This has to be run from base branch
  git checkout $base_branch

  # Update our list of remotes
  git fetch
  git remote prune origin

  # Remove local fully merged branches
  git branch --merged $base_branch | grep -vE "$protected_branches" | xargs git branch -d

  # Show remote fully merged branches
  echo "The following remote branches are fully merged and will be removed:"
  git branch -r --merged $base_branch \
    | sed 's/ *origin\///' \
    | grep -vE "$protected_branches"

  read -p "Continue (y/n)? "
  if [ "$REPLY" == "y" ]
  then
     # Remove remote fully merged branches
     git branch -r --merged $base_branch \
       | sed 's/ *origin\///' \
       | grep -vE "$protected_branches" \
       | xargs -I% git push origin :%
     echo "Done!"
     echo "Obsolete branches are removed"
  fi
}