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In How do comment @replies work? we learn that the @ syntax can be used to notify "authors, commenters, and editors" (and additionally mods who closed a question).

Does the list of "commenters" extend to "all those who've ever commented on the post" or just to "those whose comments are visible, i.e. not deleted"?

In other words, if I comment on a post and subsequently delete it (it being the only comment I have made on that post, and I am neither the author nor an editor of the post), and another user types @Willie in his comment, will I be notified?

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If they can, I'd say this is a bug. – Cody Gray May 22 '12 at 7:57
@Tim ManishEarth hello! as requested. – tombull89 May 22 '12 at 8:02

1 Answer 1

up vote 5 down vote accepted

Nope. This didn't work.

Makes sense, since I recall reading that deleted comments leave no trace (unlike posts). They disappear. So any record of you having commented disappears as well--then the @reply won't work.

Looks like comments do leave a diamond-visible trace, so I guess that they are stored in the database. But the SE people have already thought of this and made sure that @replies don't work.

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Technically, they leave some kind of trace, because diamond moderators can [now] see deleted comments. But they can't be "undeleted", so they are still very different from deleted answers. – Cody Gray May 22 '12 at 8:07
The comment by @TheEstablishment explains why I asked the question in the first place. (I mod Math.SE.) Good to know that the coding is "sensible". :) Ideally I would like to see this (minor) point added to the faq. – Willie Wong May 22 '12 at 8:09
Well that's easy to do, @Willie. The FAQ is a community wiki (as all Meta FAQ are), and people who have interesting tidbits to add are encouraged to edit it. – Cody Gray May 22 '12 at 8:12
@TheEstablishment of course. It just feels a bit awkward since I am the one who asked this question and am a bit unsteady with the state of my knowledge; since this is something that is in the code, presumably someone with access to it can give a more definitive answer (than I can based on experimental inferences). – Willie Wong May 22 '12 at 8:18
@WillieWong I can confirm that the code only considers current comments for @reply candidates; deleted comments are not considered. Tim has the truth of it. – Marc Gravell May 22 '12 at 9:03
@Willie: You'll be surprised at how much of that faq answer is based on experiments. I should know, look at the edit history :-) So go ahead and edit, please! – Hendrik Vogt May 22 '12 at 10:17
@all okay. Done! – Willie Wong May 22 '12 at 11:05
Ironically, @all does not do anything. :-) – Cody Gray May 22 '12 at 11:07
@TheEstablishment: Except summon ME – Manishearth May 22 '12 at 11:07

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