I was looking at the
suggested tab of the tag synonyms page to see if I needed to vote on anything, and noticed a synonym that the system says I created for user-defined-functions, but it was a synonym to itself.
I remember dealing with the category and creating synonyms for it, but would never have made a synonym to itself. I figure there had been retagging going on that made it end up that way. I'd appreciated it if someone could delete that suggested tag synonym.