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Why is it that when I want to mention in a comment or an answer a user, sometimes it displays the name, and other it just doesn't? I'm not sure if that is supposed to happen? Is it because some of them have a space in their user names? Why?

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    Can you give us an example where the user name is not shown?
    – Cody Gray
    Aug 9, 2013 at 13:53
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    The @ sign has no special meaning in answers, only in comments, and subject to constraints. Aug 9, 2013 at 13:55
  • stackoverflow.com/questions/17931073/dynamodb-vs-mongodb-nosql/…, for example I'd like to mention @derick Aug 9, 2013 at 13:56
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    You mean in your comment to Derick's answer? There the message will always go to the author of the answer. So no @reply is necessary. It would become available (afaik) if another user were to comment on the same post.
    – Bart
    Aug 9, 2013 at 13:57
  • Your question is surprisingly lacking in free hand circles.
    – Cole Tobin
    Aug 9, 2013 at 13:59
  • @Gilles can you specify some constraints? Aug 9, 2013 at 14:01
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    Just read through the post he linked @Pedro.
    – Bart
    Aug 9, 2013 at 14:01
  • @Bart add a cooment to derick's answer Aug 9, 2013 at 14:02
  • So yes, the author of the post will always be notified of the comment. The @reply is not necessary in that case.
    – Bart
    Aug 9, 2013 at 14:03
  • For the linked duplicate How do comment @replies work?, see a possible answer to your question in item #10: "If only you and the author have been commenting on the post so far, the @name will be automatically removed from the beginning of the comment..."`
    – apsillers
    Aug 9, 2013 at 14:06
  • ok guys! thanks for the quick support, I totally appreciate that! Aug 9, 2013 at 14:09

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