cp0: combine dropping a binding and begin rotation
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Er... looking one more time, the new example suggests that the updated cp0 order is worse, not better! I'll take this from the top on the Racket test-suite side and figure out where I got confused. |
A follow-up to c081296, this commit adjusts the cp0 change to avoid skipping the variable-dropping rewrite when the `begin` rotation applies. This combination passes the new test, passes old tests with small adjustments, and allows Racket to pass some tests that are similar to "cp0.ms" tests. Meanwhile, c081296 should have noted the PR (cisco#789) it squashes and some author information that was lost in the squash: Co-authored-by: R. Kent Dybvig <dyb@scheme.com>
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Trying again, this time with @owaddell's repair, a test that reflects the original issue for Racket, and a corrected version of the broken test that showed why my first attempt was bad. |
mflatt
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begin rotationbegin rotation
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A follow-up to c081296, this commit adjusts the cp0 change to prefer an existing case instead of the new one. This order still passes the new test, it passes old ones with a small adjustment, and it passes Racket tests that are similar to "cp0.ms" tests.