Finds all of the files which match (used for completion).

def find_macthing_files(match):
    """Finds all of the files which match (used for completion)."""
    last_slash = match.rfind('/')
    if last_slash == -1:
        dirname = '.'
        match_prefix = match
        result_prefix = ''
    else:
        dirname = match[0:last_slash]
        match_prefix = match[last_slash + 1:]
        result_prefix = dirname + '/'
    return [result_prefix + filename for filename in os.listdir(dirname) if filename.startswith(match_prefix)]