pre-commit

#!/bin/bash

if git rev-parse --verify HEAD >/dev/null 2>&1
then
        against=HEAD
else
        # Initial commit: diff against an empty tree object
        against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
fi

ws_errors=$(git diff-index --check --cached $against -- 2>/dev/null | sed '/^[+-]/d' | grep '\.\(cpp\|h\|lua\):')
if [ -n "$ws_errors" ]; then
        printf "$ws_errors"
        echo
        echo "ABORTING, whitespace errors"
        exit 1
fi