all is in the title... but also related to Unanswered and abandoned questions So : is it good to give "clues" in comments as this will lead (probably) to unanswered questions ?
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3$\begingroup$ Well, speaking for myself at least, some times am not sure of the answer I am providing (like right now my stance is not at all "official") so I comment instead, either expecting further info from the user, or to encourage others to give full answers as well. Most often though I just do it because the solution is either so obviously simple or common that either I fear I am missing something fundamental or it doesn't even warrant a full featured answer. Maybe someone else cares to take the time to elaborate a full answer bellow. I'd also like to hear more opinions from other users. $\endgroup$– Duarte Farrajota Ramos ModCommented Jun 23, 2016 at 0:15
1 Answer
I cant speak for why everybody does it, but this is what I've seen, and done myself.
I leave an "answer" as a comment when I don't want to write a full answer, simple as that. There can be many reasons why I don't want to write a full answer: I don't have time, or don't feel like writing a full answer; I may not be 100% sure that what I'm saying is correct; I may not be sure of what the OP is asking and on and on.
Now "simple" questions may get answered in the comments because (people like me) don't want to take the time to write a proper answer when we can just say in one line what the OP needs to do. Yes I know we would be forfeiting the easy rep. (That may sound crazy to you now, but after you have used SE for a few years you'll see what I mean.)
Along those same lines, people may answer in the comments because it is so simple, they can't think of what more to write to make it a full answer.
It is completely up to you whether you leave "clues" in the comments.
Do bear in mind even if you "answered" in the comments and are coming back later to write a full answer your comment does not "reserve your spot." It is perfectly ok to write an answer off of somebody else's comment. (there is a lot on the SE metas on that topic)
The super short of it:
A comment is different then an answer, as such it is a courtesy to wait for the other user to come back and answer. When you answer it would be nice to mention the comment.
I would highly recommend that you do mention the comment if you wrote your answer based off of that comment. (but that is a different issue, count all that last part a bonus.)
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$\begingroup$ Considering the main interest of all these Q/A is to provide a way to find an answer in the future, maybe my question is not so important if the future user notices the comments. But there is the "avoid to answer a question in the comments". Of course I understand nobody will keep interested or will have time to do that for years... A solution could be to have the ability to tag a comment as "short answer" (or to tag an answer as short answer) ? $\endgroup$– lemonCommented Jun 23, 2016 at 14:19