pre-commit hook

#!/bin/sh

# put this in file 'pre-commit' in .git/hooks
# file has to be marked as executable (+x) 

#don't commit if FIXME was found in diff
exec 1>&2
DONT_COMMIT_MARKER="FIXME"
if [ $(git diff --cached -G "$DONT_COMMIT_MARKER"|wc -l) != 0 ]; then
  git --no-pager diff --cached -G "$DONT_COMMIT_MARKER"
  echo
  echo "ERROR: You're trying to commit a line containing $DONT_COMMIT_MARKER"
  exit 1
fi

#disable comitting in detached HEAD
if ! git symbolic-ref HEAD &> /dev/null; then
  echo "You are in a detached head state! Commit has been blocked. (Use --no-verify to bypass this check.)"
  exit 1

fi