I tried to whip this into shape, but there were a few areas I didn't feel I had the necessary understanding to feel comfortable taking on the committer role for it. I've cleaned it up the best I could, fixing whitespace and typos, eliminating an unnecessary addition of an include, improving C comments (at least to my eye), and adding an Assert where it seemed like a good idea to me.
My own tests and those of others show performance improvements (up to 10x for some tests) and no significant performance degradation, even with attempts to create "worst case" scenarios. The only changes to the regression tests are to change an "out" file to eliminate re-checking the index predicate against the heap on every matching row, which seems like a good thing. I'm taking my name off as committer and marking it "Ready for Committer". If someone else wants to comment on the issues where Tom and Kyotaro-san still seem unsatisfied to the point where I can get my head around it, I could maybe take it back on as committer -- if anyone feels that could be a net win. -- Kevin Grittner EDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
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