pre-commit hook to alert if a certain string found in code

gistfile1.sh

#!/bin/sh
RED="\033[0;31m"
WHITE="\033[1;37m"

if git diff-index -p -M --cached HEAD | grep '#debug' > /dev/null; then
  #echo 'debug lines found in commit.  Aborting' >&2
  #exit 1
  echo "\n\t${RED}You left a debug comment in the code!${WHITE}\n" >&2
fi