Loom switch pain

[Jonathan Lange]

On Fri, Dec 12, 2008 at 12:39 PM, Robert Collins
<robertc at robertcollins.net> wrote:
> On Fri, 2008-12-12 at 12:06 +1100, Jonathan Lange wrote:
>>
>> Oh... I see that down-thread takes a thread option. And can be used to
>> go up. Hmmm!
>
> Using it to go up is equivalent to switch - it should likely check and
> say 'no' :).

Right, it's the equivalent of check for changes + switch.

jml