When I answer a question, I prefer to make the answer extensive - with a good MWE, a screenshot, some code comments, links to other questions, a solution that possibly goes a bit further than asked for. It takes some time to write an answer like this, and often it happens that somebody else posts an answer before I am fully finished and happy with the result.
If the other answer has the same solution or a better one (shorter/easier/better results) then I discard my own answer. When my solution is different but equally good or perhaps better, or possibly interesting for showing some general techniques, etc., I post it as a second answer. However, when I do discard my answer, I feel like my effort has been for nothing (except for learning something new myself).
Therefore, I would like to have some kind of "I am working on an answer"-button, so potential answerers can see that there is somebody who is, well, working on an answer, and decide not to start an answer of their own at this point - or to speed up :)
Alternatives would be to leave a comment (seems like the wrong place), to post an incomplete answer (seems wrong in general), or to announce in chat (will reach only chatroom regulars). Any thoughts on this?
Still editing/updating later on
, but it might be not seen by others.