Remove whitespace from git diffs

ws.sh

#!/bin/sh
# set -x verbose #echo on

# Find files with trailing whitespace
for file in `git diff --check --cached | grep '^[^+-]' | grep -o '^.*[0-9]\+:'` ; do
    file_name=`echo ${file} | grep -o '^[^:]\+'`
    line_number=`echo ${file} | grep -oP '(?<=:)[0-9]+(?=:)'`
    sed -i '' "${line_number}s/[[:space:]]*$//" ${file_name}
    git add ${file_name}
done

exit