The following just happened:
@nixeagle was writing an answer to this question, while the inquirer found out how to do it by himself, and began editing his question.
I was waiting for nixeagle's answer to be posted, and refreshing the page. I saw both the edit and the answer appear at once, containing the same information. What a coincidence.
What should be done in such a (albeit rare) case? Should the inquirer remove his/her edit and post it as an answer?
Note that there had been 16 minutes between the original question and its edit.