How to setup public location?

[Gordon Tyler]

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On 1/29/2010 10:10 AM, Martin Pool wrote:
> [/home/mbp/tribunal]
> push_location = bzr+ssh://bazaar.launchpad.net/~mbp/tribunal
> push_location:policy = appendpath
> public_location = lp:~mbp/tribunal
> public_location:policy = appendpath

What does the :policy line do?

Ciao,
Gordon
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