spamfilter-0.3.2 fails with not enough arguments

Add IP address to fix

Add IP address to fix

Thanks. As I'm trying to keep the plugin code compatible with both 0.11 and 0.12, I can't quite use the patch as is. I don't have the spamfilter plugin installed myself for any version, but as the change is restricted to just the method signature, here is how I'd write it:

from trac.util import arity
...
if arity(FilterSystem.test) == 4:
    # 0.11 compatible method signature
    FilterSystem(self.env).test(req, author, changes)
else:
    # 0.12+ compatible that adds an 'ip' argument
    FilterSystem(self.env).test(req, author, changes, req.remote_addr)
...

The implicity argument self is part of the argument count for the method, which makes the count 4 and 5 for old and new versions.

If the patch can be updated and confirmed to work with both 0.11 and 0.12 versions, I'll be happy to apply it.

I've just gone ahead and applied this in [8253]. Hope it works for all. Reopen if not.