prezto/modules/git/functions/git-stash-clear-interactive

#
# Asks for confirmation before clearing the Git stash.
#
# Authors:
#   Sorin Ionescu <sorin.ionescu@gmail.com>
#

if ! is-true "$(command git rev-parse --is-inside-work-tree 2> /dev/null)"; then
  print "$0: not a repository work tree: $PWD" >&2
  return 1
fi

local stashed

if [[ -f "$(git-dir)/refs/stash" ]]; then
  stashed="$(command git stash list 2> /dev/null | wc -l | awk '{print $1}')"
  if (( $stashed > 0 )); then
    if read -q "?Clear $stashed stashed state(s) [y/N]? "; then
      command git stash clear
    fi
  fi
fi