FWIW, I use XXX, and I've never come across an instance where XXX was anything but a FIXME/TODO. It doesn't show up in any project I've worked on, in the ways t

FWIW, I use XXX, and I've never come across an instance where XXX was anything but a FIXME/TODO. It doesn't show up in any project I've worked on, in the ways the author exhibited. e.g. IP addresses usually use lowercase xxx, if they use letters at all. I see a lot of network-related code, and XXX is just not a thing I see, outside of comments. But, really, I don't have strong opinions. My editor can highlight anything I want to use for this purpose, and I think they're all (XXX, FIXME, TODO) pretty universally recognized as meaning "This code is kinda ugly, and we ought to do something about it." which is maybe enough granularity in the code itself when we already have ticket trackers, source control, unit tests, etc.