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 ...
Treat the element as a single unit when deleting and copying it.
If you type @Mar and then press tab to auto complete then immediately press the delete button (or backspace on windows) it should delete the entire UI element and not just the ] at the end of the text version. The same should go for copying; when it's highlighted I don't really want to see the ...
Is this a good idea at all? Why/why not?
Yes, even a great idea. Main reason is frustrated Mat's and Dan's who keep being pinged while it was actually intended for other users. And it's more elegant than the current way. (and yes, it even happened with a @Dro in a rather small room)
Should there be a transitioning phase during which the old @...
This is gonna really hurt for a while. I'm very, very used to just typing first-names and partial-names without breaking my rhythm; auto-complete is nice when I don't remember someone's name (or they use funky characters that I can't easily type), but otherwise I don't much use it right now.
I like this idea:
As a shortcut, if the autocompleter only shows a ...
Remove shortened name chat pinging has 20 upvotes at the time of writing. As you can see, this problem is still very real, and should be addressed.
In my case, the name that is being matched, is "nick".
The issue is also not just when I'm in chat, but I also get ...
If it's easy to fix, this probably makes sense. But there might exist too many different ways to break chat pings in this way. Suspending people abusing this is likely easier than fixing every corner case.
Users intentionally annoying other users with hidden pings are breaking the rules and making them stop by suspending them is certainly appropriate.
I think this is behavior carried over from the rest of the site. Most of the SE network is static, or relatively so. It is designed to be read days, even years after it was written as well as seconds. Chat, on the other hand, is usually live. Not always, but at the very least far more often.
Therefore, I don't need to be pinged if you've changed something ...
Is this a good idea at all? Why/why not?
Yes, it is. This is a problem for a long time already and finally it is going to be fixed! Yay! I think the current proposal is quite intuitive, so let's get this implemented.
Should there be a transitioning phase during which the old @plaintext mention still works, maybe with something like a deprecation warning?
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
No, it doesn't. Since September 2014, autocompletion shows exactly the users who can be pinged.
What follows describes the situation at the time the question was posted.
You can sometimes ping a user even if their name isn't autocompleted, and conversely sometimes the name of unpingable users is completed. This is because your browser decides whether to ...
Should we allow pinging users who can't talk in chat?
It is kind of pointless, specially if the user you pinged isn't going to reach the chat threshold anywhere soon. But as users can join the chatroom while they can't talk yet I don't see why we would need to limit the features any further.
Since a user with less rep cannot reply to the ping, is it OK ...
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 ...
If I recall correctly, you can be @pinged for a week since your last visit to the room (even if you're not currently present among the room visitors), supposing that you ever posted in that room. Note that replying to your message (with the special reply button) would ping you anyway, even you haven't visited for a year.
E.g., I haven't been in Shadow's Den ...
Can you work with this? Does it break the way that you're used to chatting? If so, how so?
Oh, yes. It works very nicely. I don't like it flashing all text the entire time if you click anywhere near a user name, but I can live with that for now.
What should happen when you click a mention?
I would like to see single elements you can delete at once. Also,...
We had the same question over on the Bridge awhile back and tested this for science. It turns out that the first 10 people will be pinged with a notification, however everyone afterwards will only have the message highlighted in chat, but receive no notification. Interestingly enough, duplicate pings (pinging the same person multiple times in the same ...
Something small but cool, aka nice to have, would be a tooltip suggesting a closest match when trying to ping a non-existent user, e.g.:
Doesn't have to be complicated algorithm, just a simple characters match. I'm used to Chrome auto correct suggestions when typing (hey, got one even now, typed "existant" by mistake) and having such suggestion(s) would ...
Moderators have the power to super-ping any user on any site anywhere in the network.
But mortals like us are left powerless behind a sound-proof glass window to stare at the person we want to reach soooooooo badly.
I'm going to focus only on the third question. The first two, while important, are well answered by others.
With this change, it would be theoretically feasible to allow pinging any chat user, regardless of whether they have ever interacted with the room in question. Is that something we'd want? Or should there still be restrictions similar to today's 7-...
[Note: This is an answer to the generic question as stated. It does not apply to the concrete situation which has been described in detail in another answer.]
This particular case is easy:
A: [...] Do X and don't do Y again.
A: I already told you not to do Y.
Asking people to do something is fine, commanding them to do something is unfriendly. ...
I'm not sure if we really need a warning, just a way to show that they probably aren't awake (since it'll probably be only power users using this anyway). For users that we have enough information on to make this (insanely creepy) prediction on, how about this?
This image has been... slightly altered (yay chrome dev tools), but you get the idea. I would ...
This is already partially implemented.
If the ping phrase is an exact match to the full name or one of the words in the name, a ping won't be issued (A ping highlight next to the name however will )
So for example, if we have Mad Scientist and Madara Uchiha in the same room, when someone pings @Mad, only Mad Scientist will be pinged.
Still, when a full match ...
Fixed now, sorry about that. The fix for this issue involved treating the chat message as HTML before processing @mentions. This resulted in mentions of your display name being encoded as @El'endia Starman. Since an ampersand is not a legal character in a display name (and, by extension, in a mention), only the @El part was considered valid. And ...
Are we supposed to be able to ping ourselves or not?
What would be the benefit of that? None. So no, it should not be possible.
Please make this consistent.
It is. Pinging yourself or another user is something else than replying to a message. There is no need for consistency since they are two separate things.
There are some benefits of being able to ...
Based on this discussion, the following feature request and personal experience—no, notifications do not carry over from chat. The created chat room has no direct association with the post it was migrated from so OP (or anyone else) will not be notified unless they were a part of the conversation and are @pinged.
As soon as the comments are migrated to chat,...
Once you join a chat room, you can be pinged as long as you are in the room. It only gets complicated when you leave the room:
If you never post in that room, you won't be pingable
If you do ever post something in the room, you will be pingable for 7 days after leaving.
Leaving means either you manually click "leave", or when the system detects you're no ...