;;; enumerates the entire questions database in Stack Overflow. I assume that this happens in other stack exchange sites. Other searches like ... or
%%% do not have such a problem.
This query is also presumably expensive since it takes 5.09 s to respond.
Matt shows in the comments that searching for
****** is even more problematic. (Please do not test this on SO itself, it takes a long time to complete and likely loads the server a lot, you can test on a smaller site).
A possible fix would be to check the length of the query after stripping characters such as
; and verifying that it is non zero.
That's what I get for talking about LISP :(