With this patch, the test runner can be customized some more.

It accepts things like this:

/jquery/test/?core&event
/jquery/test/?!ajax&!selector
/jquery/test/?core&!makeArray

The logic behind is like this:

If no restriction is found then
   execute all.
Else if(when) there's a match, then
  If it's a not(!)
     dont execute this test
  Else
     execute this test
Else if it's a not
  Signal this as ok, but keep checking

This logic allows multiple nots, it seemed to me like the expected behavior.

I consider this very useful to run only a couple of tests, or specially a !ajax tests (it nearly hangs for me).

Additionally, I added a test that fails until the patch is accepted (by Jörn's request at #2619).

We could have some kind of name agreement that this kind of tests, include an "experimental:" or something like that.

Then you can run test/?!experimental: to avoid seeing useless failures.

I hope this is useful.