Use better matching

[AeliusSaionji]

I have a tab named "The last ring bearer"

:buffer last
switches to that tab, as expected.

:tabgroupbuffer last
throws an error "no matching Buffer for last" (tabgroupedbuffer has the same error).

It looks like it only matches from the start of a line- so I'd have to type "the last" in order to match.