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Simon Peyton Jones authored
Trac #13381 showed that we were losing track of a wanted constraint when simplifying the LHS constraints for a RULE. This patch fixes it, makes the code a bit simpler, and better documented.
af6ed4a6
Trac #13381 showed that we were losing track of a wanted constraint when simplifying the LHS constraints for a RULE. This patch fixes it, makes the code a bit simpler, and better documented.