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I noticed it just now with the comments on this answer (fourth comment down, addressed to @Stian and @AnthonyPegram on 2011-11-18 14:51) and I verified in my comment responses that I could indeed mention multiple people in the comments.

But according to the second point in the FAQ ("How do comment @replies work?"):

You can explicitly notify one (1) other commenter or editor, by using @name, where name is the username with all spaces removed.

There used to be a dialog that informed us that we couldn't do this, which leads to the following questions:

  • Are multiple notifications allowed again? If not, then
  • Was the error dialog removed? If so, then
  • Doesn't this give the user a false impression that their notification will be delivered?

Additionally, the rule is still enforced in meta:

Single comment notification warning

It seems that the behavior is enforced again.

So what happened, was it a blip in the system?

share|improve this question
Here's a comment for you to test this. – NullUserException อ_อ Nov 22 '11 at 15:02
@NullUserExceptionอ_อ: The commenting here is not the issue, it was the commenting on SO that is the issue. Testing it here doesn't prove anything. Updated title and question appropriately. – casperOne Nov 22 '11 at 15:07
up vote 2 down vote accepted

No, nothing has changed there. Shortly after this popup was introduced, there was a complaint here on Meta (I can't find it right now) where somebody tried to post code that contained several "@" characters (or something like that) in a comment, which failed with this popup being the reason.

Since that's a valid issue, and the "only one additional @user" popup is mainly a nice-to-have, what was done was the simplest thing someone could come up with: Just don't show the popup if the comment text contains a backtick. (Additionally, when someone knows how to format code in comments, chances are pretty good that they know about other comment rules as well.)

and I verified in my comment responses that I could indeed mention multiple people in the comments.

I have no idea what you verified and how, but rest assured that the "only one additional user" thing is still in place.

share|improve this answer
See the link to the question which I commented on (the link and the position of the comment, as well as the date are in the first line of the question). It mentions the specific comment. I was able to get two notifications in. That's the verification. – casperOne Nov 22 '11 at 16:37
Read my answer. You were able to get the comment through, because the comment contains backticks. That doesn't mean Anthony was notified of your comment. – balpha Nov 22 '11 at 16:47
I see it now. An odd quirk, to say the least. – casperOne Nov 22 '11 at 16:49

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