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I've started doing some work on RDT to allow us to start detecting ruby code warnings in the same vein as checkR, Lint, or the JDT.

The current nightly build has the functionailty enabled (in a very hacked up way), and I'd like to try and extend this to include more semantic checks of ruby code to mark as warnings.

So that's where you, handy subscriber, come in. What kind of semantic checks would you like to see RDT run against your code (while it does the normal syntax checking)?

I've found some ideas on the CheckR site and via the Ruby-lang mailing list archives. But I'm looking for some more, and possibly others that aren't specifically semantically found (such as variables whose names are very close matches which could mean mis-spellings, or common mis-spellings of initialize).