It was accepted, but I note that the
[tag:tag-name] functionality does not work in the excerpt as it does on other places. Namely, it just displays in plain text.
I consider this to be
a bug suboptimal, because at any place, the phrase "the tag 'logic'" is less useful than "the tag logic".
Thoughts, references and solutions are all welcome.
Therefore this may now be considered a feature request. It is not a request to enable full MarkDown in excerpts; only the tag links.