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Something odd happened to the tags of this question: http://stackoverflow.com/questions/3044795

Here's a screenshot in case it gets edited or something:

screenshot

The tag in question is "-server" if you click edit.

Is this a feature, or a bug? If it's a feature, what does it do?

Edit: Just tried tagging this question with "-testing" and it stripped the "-". So I guess this is a bug.

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It's been fixed since you posted this, indeed, but you can see the "not" in the revision history. Looks like tag search logic leaked out! –  Grace Note Jun 15 '10 at 11:56
    
Hah! Just as expected with a bug like this, if a question is tagged "not X", then it will basically count as not having that tag. So this question doesn't show up with a search for [server], but it will show up in [tagging] -[server]! –  Grace Note Jun 15 '10 at 13:42
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Because @George edited it, the question now shows up on a [server] search and no longer shows up on [tagging] -[server]. It's basically a glorified empty space tag, it seems. –  Grace Note Jun 15 '10 at 14:21

1 Answer 1

up vote 3 down vote accepted

ah, I think I finally see how this is happening.. $_SERVER

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If you make it idiotproof, someone will build a better idiot. I guess that applies to Regexes as well. –  George Stocker Jun 15 '10 at 14:15
    
This still isn't working. –  Jon Seigel Jun 15 '10 at 22:14
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@george that wasn't the regex, actually, it was the fact that we silently convert _ to - in tags whenever we see it. Good old String.Replace() –  Jeff Atwood Jun 16 '10 at 6:30
    
Fix confirmed now. –  Jon Seigel Jun 16 '10 at 13:32

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