Github user jpeach commented on the pull request: https://github.com/apache/trafficserver/pull/206#issuecomment-107628793 The ``REC_SRC`` constants scan poorly, I think I'd prefer ``REC_SOURCE``. ``REC_SRC_NONE`` should be called ``REC_SOURCE_NULL`` to be consistent with other naming. There's some semantic confusion about what ``REC_SRC_DEFAULT`` means. When ``traffic_manager`` sets variables, I don't think they should be considered defaults. I am sympathetic to @sudheerv's concerns about how useful this is. The distinction between "hard-coded default" and "everything else" is clear, but this change is attempting to track various nuances that are much murkier. Does ``DiagsConfig::RegisterDiagConfig`` really have to register everything? I expect that that superfluous now?
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