Mark empty dirs in a git repo with .gitignore files

git-mark-empty-dirs

#!/usr/bin/env bash
# git-mark-empty-dirs -- Mark empty dirs in a git repo with .gitignore files
# Author: Jaeho Shin <netj@sparcs.org>
# Created: 2009-12-03
set -e

remove-or-mark() {
    local d=$1; shift
    interact() {
        echo "Found empty dir: \`$d'"
        echo " (R)emove all empty parents"
        echo " (r)emove only itself"
        echo " (m)ark with .gitignore"
        echo " (s)kip"
        echo " (q)uit"
        read -n1 -p"Choose action [Rrmsq]: " r
        echo
        case "$r" in
            r) rmdir "$d" ;;
            R) rmdir -p "$d" || true ;;
            m) touch "$d"/.gitignore ;;
            s) ;;
            q) break ;;
            *) interact ;;
        esac
    }
    interact
}

# find empty dirs and remove or mark
{
find "$@" -type d |
while read d
do [ -n "`ls -A "$d"`" ] || remove-or-mark "$d" 0<&3
done
} 3<&0-