[TxMt] Quick find and open last closed file

[Steve Lianoglou]

> FWIW, this appears to work only if the file was closed by using  
> ⌘W or clicking the "X" in the active tab. If you close a  
> file by clicking the "X" in an inactive tab, then hit ⌘T,  
> you don't get the file you just closed, you get the last file that  
> was closed using one of the aforementioned methods...

Or, to put it more simply, you get the last file that was "in front"/ 
active/in view/had-focus and was closed.

... though I suppose the multi-slash at the end of that sentence  
isn't all that simple :-)

-steve