Releasing from Mercurial repo -- procedures?

[Stephen J. Turnbull]

Michael Sperber writes:

 > No, you do.  The question is where you're putting the label itself.  You
 > want to put it in the mainline so you can see it from the mainline.  It
 > would still point into the branch.

This doesn't make any sense.  Tags live outside of the revision DAG
and point at a single revision, which will not be on the "principal
branch" containing the tip of default.

This means that to figure out the difference between tip and any given
revision, you need to compute the DAG back to the most recent common
node.