[Buildbot] #3205: Property interpolation

[Buildbot trac]

#3205: Property interpolation
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Reporter:  pedersen  |       Owner:
    Type:  defect    |      Status:  new
Priority:  major     |   Milestone:  0.8.x
 Version:  0.8.10    |  Resolution:
Keywords:            |
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Comment (by dustin):

 That `Interpolate` syntax is wrong (missing a `(`).  And both *should*
 work.  Are you sure that `foo` was set in both cases?

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Ticket URL: <http://trac.buildbot.net/ticket/3205#comment:1>
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