WAAAAAAAAAAAAAAAAAAAAAAAGH! for bash

waaagh!

type old_command_not_found_handle 2>/dev/null | grep -q 'is a function' > /dev/null
if [ $? -ne 0 ]; then
    eval "$(echo "old_command_not_found_handle()"; declare -f command_not_found_handle | tail -n +2)"
fi

command_not_found_handle () {
    if [[ ! "$1" ]] ; then
        old_command_not_found_handle $@
        return $?
    fi

    n=$1

    if echo $n| perl -ne 'exit(/^waa+gh!?$/i ? 0:1)' ; then
        if which lolcat > /dev/null; then
            n=$(echo $n | lolcat -f)
        fi
        echo $n
        return 0
    else
        old_command_not_found_handle $@
        return $?
    fi
}