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You're right. I think it is included: https://github.com/golang/go/commit/b902a63ade47cf69218c9b38... (see the end of the commit message)

That's what I call a comprehensive commit comment.

For what appears to be a three line code change. Which also includes dozens of lines of new comments explaining the bug and the temporary fix.

That's obviously a bug that really...umm...bugged somebody.