How to get the diff between two arbitrary remote revisions?

[Aaron Bentley]

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Robey Pointer wrote:
| All I really meant was:
|
| I don't think -r should let you shunt across to a different branch  from
| the branch currently in context.
|
| AIUI, "-r revid:bar" will only look up the revision in the current-
| context branch

No, revid is completely context-independent.  It's a universally unique
identifier.  You can specify any revision id you like.  Of course, if
it's not stored in your branch, the operation isn't likely to succeed.
But it's quite common for a branch to store revisions that aren't
ancestors of the latest revision.  Happens every time you merge.

Aaron
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