Git pre-commit hook for Ansible Vault

pre-commit.example

#!/bin/sh
#
# Pre-commit hook that verifies if all files containing 'vault' in the name
# are encrypted.
# If not, commit will fail with an error message
#
# File should be .git/hooks/pre-commit and executable
FILES_PATTERN='.*vault.*\.yml$'
REQUIRED='ANSIBLE_VAULT'

EXIT_STATUS=0
wipe="\033[1m\033[0m"
yellow='\033[1;33m'
# carriage return hack. Leave it on 2 lines.
cr='
'
for f in $(git diff --cached --name-only --diff-filter=d | grep -E $FILES_PATTERN)
do
  MATCH=`grep --invert-match --no-messages $REQUIRED $f | head -n1`
  if [ -z $MATCH ] ; then
    UNENCRYPTED_FILES="$f$cr$UNENCRYPTED_FILES"
    EXIT_STATUS=1
  fi
done
if [ $EXIT_STATUS = 0 ] ; then
  exit 0
else
  echo '# COMMIT REJECTED'
  echo '# Looks like unencrypted ansible-vault files are part of the commit:'
  echo '#'
  while read -r line; do
    if [ -n "$line" ]; then
      echo "#\t${yellow}unencrypted:   $line${wipe}"
    fi
  done <<< "$UNENCRYPTED_FILES"
  echo '#'
  echo "# Please encrypt them with 'ansible-vault encrypt <file>'"
  echo "#   (or force the commit with '--no-verify')."
  exit $EXIT_STATUS
fi

With the previous version of the script if wouldn't let me commit deleted .vault files. Adding --diff-filter=d to the git diff call excludes any deleted files from the list of files to be checked for the magic header text and works great. Just wanting to add this in case it helps anyone.

Helped. Thanks!