# Issue #148 on 2.7
# Bug is in handling CONTINUE like JUMP_BACK
# Similar code is probably found in a 2.7 stdlib. mapurl?
def reduce_url(url):
    atoms = []
    for atom in url:
        if atom == '.':
            pass  # JUMP_BACK is patched as CONTINUE here
        elif atom == '..':
            atoms.push()
    return atoms