I would like to be able to do the following:
  darcs changes --context >foo

Then, at any possible later date/time do this:
  darcs changes --from-context="foo" >bar

To get a changelist between the two times no matter what the context changes
were (it should be fully reflective, even unpulls should show, probably
similarly to, 'they have'/'we have' as in the other commands (not sure if
bi-directional change info is actually really relative to the 'changes' command,
but it would be nice)).

On Tue, Jan 03, 2006 at 03:46:55AM +0000, Clive Crous wrote:
> I would like to be able to do the following:
>   darcs changes --context >foo
> 
> Then, at any possible later date/time do this:
>   darcs changes --from-context="foo" >bar
> 
> To get a changelist between the two times no matter what the context
> changes were (it should be fully reflective, even unpulls should show,
> probably similarly to, 'they have'/'we have' as in the other commands
> (not sure if bi-directional change info is actually really relative to
> the 'changes' command, but it would be nice)).

When unpulls have been done, this would be tricky, but apart from that it
sounds like a good idea, and not too hard to implement, as I think it'd be
pretty similar to --from-tag in terms of implementation.

What you might want for bi-directional change info would be some sort of a
"darcs query comparison" command, which would accept either two
repositories or one repository and a context (or a repo and a tag, or
whatever).
-- 
David Roundy
http://www.darcs.net