Git pre-commit hook for debug code

#!/bin/bash

# IMPORTANT!
# On Ubuntu, /bin/sh does not point to Bash, but instead to "Dash", a highly
# stripped down version that doesn't allow certain more complex behaviours
# such as the brace expansion that you will see both in the DEBUG_GREP regex
# and in the -exec subroutine in FUSE_FIND.

# Allow input from the keyboard.
exec < /dev/tty

MODULE_PATH="/company/projects/company/www/sites/all/modules/custom/"

# Find all .fuse_hidden files in the module path.
FUSE_FIND=$(find $MODULE_PATH -name ".fuse_hidden*")

# If there are results, prompt the user for whether the files should be automatically deleted.
if [[ ${#FUSE_FIND} > 0 ]]; then
  echo -e "\n > \033[1mGit Police Warning!\033[0m Odd .fuse_hidden files were found:\n"
  echo -e "\033[1m\033[31m$FUSE_FIND\033[0m" | sed 's/\/company\/projects\/company\/www\//   - /'
  echo
  read -e -p " > Would you like me to delete them? [Y/n] " -n 1 -r
  if [[ $REPLY =~ ^[Yy]$ ]]; then
    # Run the find command again, but exec "rm -rf" on them.
    find $MODULE_PATH -name ".fuse_hidden*" -exec rm -rf {} \;
    echo -e " > Successfully deleted .fuse_hidden files."
  else
    echo -e " > Ignored the existence of .fuse_hidden files."
  fi
fi

# Find all diff/merge detritus.
MERGE_FIND=$(find $MODULE_PATH -regextype awk -regex ".*\.(orig|local|remote)")

# If there are results, prompt the user for whether the files should be automatically deleted.
if [[ ${MERGE_FIND} > 0 ]]; then
  echo -e "\n > \033[1mGit Police Warning!\033[0m Mergetool backup detritus files were found:\n"
  echo -e "\033[1m\033[31m$MERGE_FIND\033[0m" | sed 's/\/company\/projects\/company\/www\//   - /'
  echo
  read -e -p " > Would you like me to delete them? [Y/n] " -n 1 -r
  if [[ $REPLY =~ ^[Yy]$ ]]; then
    # Run the find command again, but exec "rm -rf" on them.
    find $MODULE_PATH -regextype awk -regex ".*\.(orig|local|remote)" -exec rm -rf {} \;
    echo -e " > Successfully deleted mergetool files."
  else
    echo -e " > Ignored the existence of mergetool files."
  fi
fi

# Experimental: looking into checking only staged files...
# CHANGED_FILES=$(git diff --cached --name-only --diff-filter=ACM)

# Grep for dpm, dsm and console.log(). Ignores commented lines, but doesn't work with multi-line comments yet (false positives).
DEBUG_GREP=$(grep -IiRn --exclude-dir={node_modules,vendor,lib,contrib,components,bower_components,dist,.tmp,.tmp-dist} --exclude={app,vendor}.js --include=\*.{module,inc,install,php,js} -P '^(?!.*\/\/).*(dpm\(|dsm\(|console.log\(|dkm\()' $MODULE_PATH)

# Check that there are results or exit 0 (continue operations).
# Then print the info and prompt the user, exiting 1 if they cancel and exiting 0 otherwise.
if [[ ${#DEBUG_GREP} > 0 ]]; then
  echo -e "\n > \033[1mGit Police Warning!\033[0m There are illegal debugging lines in the following files:\n"
  echo -e "$DEBUG_GREP" | sed 's/^\/company\/projects\/company\/www\//   - /' | awk -F: '{print "\033[1m"$1" \033[34m+"$2": \033[31m"$3"\033[0m"}'
  echo
  read -e -p " > Do you wish to continue? [y/N] " -n 1 -r
  if [[ $REPLY =~ ^[Yy]$ ]]; then
    echo -e " > Okey dokey, but I did warn you!"
    exit 0
  else
    echo -e " > Cancelled the commit."
    exit 1
  fi
else
  exit 0
fi

# Nothing should go wrong, but if so, it's probably best to abort the script!
exit 1