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After changing my user name to D B Lim, it seems whenever someone does @D or @D B Lim, I don't get a notification. Is this some kind of glitch? Should I change my username to one that is just one word?

Thanks.

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    $\begingroup$ To help with the diagnostics: did Srivatsan's comment here reach you or not? Note that @D definitely doesn't work, as three characters from the username are at least required. $\endgroup$ – J. M. isn't a mathematician Sep 5 '11 at 12:15
  • $\begingroup$ @J.M. No it did not work. $\endgroup$ – user5783 Sep 5 '11 at 13:07
  • $\begingroup$ @DB: There's an exception if there are spaces in your user name. I just tested that one can notify you with @DB, although this has only 2 characters. $\endgroup$ – Hendrik Vogt Sep 5 '11 at 15:16
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You need to remove the spaces to get the notification working if the first part of your username is only one letter, so @dbl or @dblim should work.

See How do comment @replies work? for much more details about the comment notifications.

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  • $\begingroup$ Personally, I find it quite confusing when I find names that had spaces or dots in between. This post seems very useful. Thanks! $\endgroup$ – Srivatsan Sep 5 '11 at 15:00
  • $\begingroup$ It is interesting to note that @DB (or @db) also works. $\endgroup$ – Hendrik Vogt Sep 5 '11 at 15:15
  • $\begingroup$ @Srivatsan: You may want to have a look at this userscript or that one $\endgroup$ – t.b. Sep 5 '11 at 15:35
  • $\begingroup$ @Theo Wow, that should be really useful. Thanks! (A separate thanks for pointing me to stackapps. I hadn't known about this...) $\endgroup$ – Srivatsan Sep 5 '11 at 15:39
  • $\begingroup$ @Hen Do those two-char names work per doc or per actual confirmed use? $\endgroup$ – Bill Dubuque Sep 6 '11 at 5:54
  • $\begingroup$ @Bill: Well, you know what "documentation" means here - most of it is written by the community itself, after actual confirmed use. However, in this case it's documented in an answer by a developer, namely balpha. (That @DB will work is not really documented there; this I tested myself.) $\endgroup$ – Hendrik Vogt Sep 6 '11 at 7:46
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Click the "help" link underneath the Add Comment button:

The post author will always be notified of your comment. To also notify a previous commenter, mention their user name: @peter or @PeterSmith will both work. Learn moreā€¦

The implication is that the user's name is "Peter Smith" so the lack of space is indicated there.

Additionally the Learn More link to https://math.meta.stackexchange.com/editing-help#comment-formatting is HIGHLY recommended.

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  • $\begingroup$ I find it quite strange that the software does not somehow warn you when you type in an invalid at-name. Can't you simply highlight invalid at-names somehow? i.e. names which will not be pinged. I suppose my prior suggestion was too much work (i.e. also highlighting valid at-names and their targeted comment in matching colors - to achieve WYSIWYG adressing). $\endgroup$ – Bill Dubuque Sep 6 '11 at 0:32
  • $\begingroup$ @BillDubuque Your post here has not given me any notifications. Aren't I supposed to get one? $\endgroup$ – user5783 Sep 6 '11 at 2:10
  • $\begingroup$ @DBL Iirc only the author of the parent of the comment thread is defaultly notified (here Jeff). I don't know if it works to ping the questioner in a comment thread they are not in. Jeff? But I think this DBL ping should work. Did it? $\endgroup$ – Bill Dubuque Sep 6 '11 at 2:14
  • $\begingroup$ @BillDubuque How come (at)DBL gives me a notification? $\endgroup$ – user5783 Sep 6 '11 at 2:51
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    $\begingroup$ @DBL See Fabian's answer. $\endgroup$ – Bill Dubuque Sep 6 '11 at 2:52
  • $\begingroup$ @DB, I can confirm what Bill wrote: if no @ syntax is used, then you'll only be notified of comments to your posts, and this is Jeff's post. Thus, I used @DB to notify you of this comment, and it only works because you already participated in the comments here. Bill in his first comment had no way of notifying you. $\endgroup$ – Hendrik Vogt Sep 6 '11 at 11:07

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