[darcs-users] Context equivalent to tag

[Aaron Kaplan]

On Sat, Oct 01, 2005 at 01:50:42PM +0200, Aaron Kaplan wrote:
> I'm looking for a way to get a context file that describes a tagged
> version.  I could do it with "darcs get --tag=foo" and then "darcs
> changes --context", but that seems like a rather wasteful way to get at
> information [that], in principle, could be read directly from the
> original repository.  Is there a more direct way?

On Mon, 3 Oct 2005 06:46:04 -0400, "David Roundy" <droundy at darcs.net>
replied:
> 
> darcs changes --context --tags=foo

That lists just one patch, namely the one that applies the tag "foo" (at
least in 1.0.3).  (Ah, come to think of it, so does the wasteful method
I suggested.)  This is perfectly logical, but it's not what I was
looking for.  I wanted a list of the patches on which the tag depends.

But I think --reorder-patches may give me what I need, so this might be
a moot point.  I'm modifying tailor so that it will sync tags from darcs
to cvs.  Ordinarily, tailor simply applies darcs patches to the cvs
working directory in the order that they're listed in the darcs change
history, but this isn't necessarily correct if there are tags involved:
it's possible that tag P2 follows patch P1 in the darcs history, yet
doesn't depend on P1.  In that case, if I apply P1 and then P2 in cvs, I
will have tagged the wrong version.  By doing --reorder-patches after
each time I pull a tag into the darcs repo, will I ensure that the
change history is in the right order to be applied in cvs?  Obviously if
P1 has already been checked into cvs before P2 is pulled into darcs,
then I'll have to do something more complicated, but at least this is a
condition I can detect.

Thanks
-Aaron