Friends

I'm struggling with GitLab search. 

eg I was looking for #22200

I wen to https://gitlab.haskell.org/ghc/ghc/-/issues, and put "-DEEBUG" and "slow" in the search box.  No #22200.  Yet both of those strings appear in the title of the ticket.

Looking for DEBUG or *DEBUG also fails. I find that DDEBUG succeeds.  What are the rules?

Thanks

Simon