A few seconds ago a first time user of AU asked a question (on AU), which was promptly and correctly answered by @terdon. That question had an exact dupe, equally well answered by @Guss, earlier on Unix & Linux, a SE communities with some overlap with AU and a few other SE communities.
Initially I was actually real surprised that said question was not already answered on AU; on second thought it actually made sense since it already had at least one excellent answer on Unix & Linux.
It made sense, but I would not go as far as saying that before making a query on AU, one should first check whether there is an answer for it in a different SE community. Rather one should learn to post in the right community to begin with. Right, but sometimes it's not so easy to decide as in this case.
- So, how should one treat a query in a community A, which was already posted in unequivocal terms in community B, both on SE ?
- Should one call that a dupe or a "cross-dupe", without meaning that the two communities are one but somehow closely related ? I am not sure that sounds completely right.
- Should flair be awarded per usual, either through upvotes or automatic increment upon acceptance of such an answer to a cross-dupe ?
- Or should the query echoing another identical query in another community of StackExchange be treated differently in terms of flair accrual, categorisation as dupe, removal, etc. ?
--is hard. If you're not using Google which keeps track of your favorite webpages, or if you're not one of us geeks who hang out on technical sites, searching for what does "--" mean in the command line doesn't immediately bring the right results.