colorful and paged wdiff output

wdiff.sh

function wwdiff () {
  if [[ -f $1 && -f $2 ]]; then
    wdiff -n\
    -w $'\033[30;31m\033[4m' -x $'\033[0m'\
    -y $'\033[30;32m' -z $'\033[0m'\
    $1 $2 | less -R
  fi
}