Deletes all merged branches with an option to edit the list

git-clean-merged.zsh

#!/usr/bin/env zsh

setopt EXTENDED_GLOB

# get list of all merged branches
branches=(${(f)"$(git branch --format '%(refname:short)' --merged)"})
# remove current branch
current=("$(git branch --show-current)")
branches=(${branches:|current})
# remove master|develop branches
branches=(${branches:#(master|dev*)})

if ((${#branches} == 0)) {
  print 'No merged branches'
  exit
}

print -- "${(F)branches}\n"
read '?Delete these merged branches? '

integer dodelete=0
case $REPLY in
  'e')
    # edit branches
    branches=(${(f)$(vipe <<< ${(F)branches})})
    if ((? == 0 && ${#branches} > 0)) {
      dodelete=1
    }
    ;;
  'y')
    dodelete=1
    ;;
esac

if ! ((dodelete)) {
  print 'No branches deleted'
  exit
}

git branch -d "$branches[@]"