Jonathan Turner f28be450e3 revert v7 API breaking changes %!s(int64=6) %!d(string=hai) anos
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error.go f28be450e3 revert v7 API breaking changes %!s(int64=6) %!d(string=hai) anos
error_test.go c00b90f331 fix handling of varargs in Errorf() %!s(int64=7) %!d(string=hai) anos