ihincks

def general_query(question, validator, default=None):
    """
    Asks the given question, returning the (possibly modified) result if validator
    allows it, and keeps asking until a valid answer is given.

    :param str question: The question to ask.
    :param validator: A function that acts on user response strings, and returns
        `(success, modified_response, message)`. The loop ends if `success` is `True`,
        in which case `modified_response` is returned. `message` is printed in
        any case.

ihincks

#!/bin/bash

timestamp() {
    date +"%Y-%m-%d_%H:%M:%S"
}

pushd "$PWD" > /dev/null
SHA="$(git rev-parse --short HEAD)"
FILENAME="$HOME/Dropbox/diff/${PWD##*/}_$(timestamp)_$SHA.diff"
git diff > $FILENAME