Since many questions usually do not have the body, I would like to change the meta description, so search engines give something meaningful. As for now, they display the first content of the sidebar.
Basically, in the description I would like to have the following:
if the question has body, display it
if there is no body, display the best answer
if there is no best answer yet, display some text (something like "this question is about:") and the list of tags
Where can I find the placeholder for the best answer?