Pre-commit hook to prevent debug code from being committed

pre-commit

# 
# Paste this script in your .git/hooks/pre-commit file (create one if it doesn't exist yet)
# To prevent debug code from being accidentally committed, simply add a comment near your
# debug code containing the keyword !nocommit and this script will abort the commit.
#

if git commit -v --dry-run | grep '!nocommit' >/dev/null 2>&1
then
  echo "Trying to commit non-committable code."
  echo "Remove the !nocommit string and try again."
  exit 1
else
  exit 0
fi

After I forgot to add sign ! (and pushed it...) I tuned first line to if git diff --staged | grep -E -i -w '(!)?no(-| )?commit' >/dev/null 2>&1
This will allow combinations like !nocommit, nocommit, NOCOMMIT, !No-Commit, No Commit etc.

Total script (which I use on Windows):

#!/bin/bash

#
# To prevent debug code from being accidentally committed, simply add a comment near your
# debug code containing the keyword "// NOCOMMIT" or "// !nocommit" (case insensitive) or "// !no-commit" or "// !no commit"
# and this script will abort the commit.
#
echo "Checking non-committable code..."
if git diff --staged | grep -E -i -w '(!)?no(-| )?commit' >/dev/null 2>&1
then
  echo "You are trying to commit non-committable code."
  echo "Remove the NOCOMMIT string and try again."
  exit 1
else
  # Run local pre-commit hook if exists
  if [ -e ./.git/hooks/pre-commit ]; then
    ./.git/hooks/pre-commit "$@"
  else
    exit 0
  fi
fi