[Buildbot-devel] Incorrect string formatting with properties (regression?)

[ddcc]

Hello,

Has anyone experienced any incorrect string formatting on the lastest Git master of Buildbot? In my configuration
file, I have the following defined as a build step:
f.addStep(Configure(command=['./configure', WithProperties('--with-llvm=%(workdir)s/../llvm-3_2/build')]))

In previous versions such as 0.8.6p1 (Fedora), I get the expected call with:
['./configure', "--with-llvm=/home/ddcc/slave/llvm-2_9/../llvm-2_9/build"]

But on the latest master, I receive the following, which screws up the build:
['./configure', "--with-llvm=('/home/ddcc/slave/llvm-2_9',)/../llvm-2_9/build"]

I've tried using Interpolate instead of WithProperties, but I still experience the same behavior. Any suggestions?

Thanks,

Dominic