You can reference another user using their name, and optionally by linking to a relevant question or answer that they wrote, or to their profile page (probably not useful/helpful).
This isn't the same as the @ reply used in comments, which actually isn't a reference to a user, but a reply to them. See How do comment @replies work? for more information about ...
I've been meaning to make this change for a while, so this was a good nudge to finally do it:
From the next build on, if a comment thread contains a comment by a user whose name starts with a non-ASCII letter, then just typing @ will bring the tab completer up with that name:
If all reply candidates start with "normal" letters (or numbers), then the tab ...
Since this is about me, I will answer.
Is there a ping etiquette?
Not that I know of.
Ping etiquette should follow what would be socially acceptable in real life situations. If you would jump into a conversation in real life, you should feel free to do so in comments. I believe comments are fair game.
Bonus question: if A and C are having an ...
After experimentation within this question the current behaviour* has been found to be as follows:
If at any point @yourname was in a comment you will get a notification in your inbox.
But you will only get a red(1) notification if @yourname is currently in the comment (either originally or by edit), i.e. if @yourname is edited out and you haven't seen ...
I want to reply to the mod commenting on it after deletion. How can I do this?
Mods can comment on deleted posts so that they can explain why the post was deleted or otherwise assist the author in better using the site.
If a moderator comments on a post either after deletion or immediately before, consider it a courtesy and pay attention to the ...
For the sake of documenting the official response for later visitors, the reasoning behind the decline appears to be Jeff's comment on Pekka's answer:
there's no valid case for "I need to notify a large number of people" -- at least not one I will support by writing software for it. – Jeff Atwood♦
By "large number of people" Jeff apparently means 3+, as ...
To quote two specific bullet points from the "How do the names get matched?" section of the FAQ you linked:
Matching is performed in reverse chronological order, so if five people named John are participating, @john will match the most recent John. (Use the next rule to differentiate.)
Spaces are removed from the display names for matching ...
I followed your link to Lawrence's profile and from there to an answer of his. I clicked Add Comment and typed @l whereupon the autocomplete offered me his whole name.
For Ωmega I couldn't find a letter to type that triggered the autocomplete - I expect copy and paste would work.
After a recent change, the autocomplete feature suggests your name immediately when typing just the @ at symbol:
because your name starts with a non-ASCII character.
If I then add charaters, other auto-completes are suggested instead:
When you comment on a post (question or answer) the poster (asker or answerer) is always pinged automatically. Therefore there is no assistance needed to include their name in order for them to be alerted to your comment.
For more about how pinging works see How do comment @replies work?.
I trust the now deleted comment of @Catija posted to this answer
Probably only one user got notified.
That comment is from mid '10. That question and Jeff's answer is from early '12. It's probable that the check for multiple pings in a comment didn't exist yet. From Jeff's answer:
Bear in mind this was specifically added because people complained "but I can type as many @usernames as I want in a comment, clearly it ...
This whole do not ping me affair is new to me, to be honest. However, I have recently seen a few occurrences of this matter, (roughly) declined in two categories:
The user does not wish to be pinged because the flashing UI causes them discomfort or otherwise breaks their concentration. In that situation, recommendations were made to employ user scripts in ...
Having handled ... a lot of flags and comments over the past few days, I suspect that its a disconnect with how folks see comments to be used.
Comments are, especially now, used as ersatz discussion boards by some folks, and they get a bit attached and grouchy about them being deleted.
Comments are also by design transient artifacts supposed to be used ...
Yes, it is really hard to type the username in comment box in Stack Exchange app. However showing username in a auto-complete dropdown menu is good for web-view whereas in app it may not look good(because no-where in app they used auto-complete dropdown).
Here is simple free-hand sketch of its look
Instead can we have add Reply option within Comment ...
I'm wondering about the reliability of the feature that allows to
address other users in comments using the @user syntax.
"Wondering" means you don't really know enough about it to propose it's wrong or could be improved.
You really should do some reading and once you know more about the system you will be able to identify problems and think of possible ...
They can ask, but I'd just ignore that request.
If the OP has a problem with a comment he or she can flag your comment for mod attention. In this specific case, the mod would decline the flag though, there is nothing wrong with your request for more details.
You can do the same with that comment; I can understand it if someone were to flag it as non-...
I think you've got a good idea that might suffer from wandering too close to an established minefield.
Threaded/nested/hierarchical comments have been brought up and shot down repeatedly. Attempt no landing there.
Allowing comment dependency without any visual difference is potentially a new and useful idea that sounds like the heart of your request.
You can respond to a user who edited your post using the @reply syntax. Quoting from How do comment @replies work?:
Notifications apply to the author, users with active bounties, commenters (associated to current non-deleted comments), and editors of the question or answer that you are commenting on
It just doesn't include their name in ...
You probably tried to ping the author of that answer. That is superfluous - the author always gets notified if somebody posts a comment on his/her answer.
You can try this with my answer (as long as nobody else comments on it).
If you want to cite a user's comment, I've found its best to type their user name and then make this a link to their comment.
Get the URL for the link by clicking on the time next to their comment, as documented here.
Comment replies are meant to notify the user you reply to.
To limit this being used for spamming everyone, comment replies only work for a limited set of people; only those that already are part of the conversation (users that have replied, the author, editors to the post) can be replied to in this manner.
This means that the chances for any conflicts ...
Starting with the next build (rev. 2014.7.9.2360 here on meta, 2014.7.9.1696 elsewhere), we will ignore multiple periods at the end of a user mention when determining whether a notification should be generated.