Some of them makes sense (and will be implemented), some of them does not make much sense (like Ctrl+Shirt+F for contextual search)
I don't see why *Abc* should work currently, it has never worked and it is not listed in the tooltip: https://www.dropbox.com/s/p9qccjg48i9j1 ... s.png?dl=02. problem with the search syntax ... *Abc* doesn't work ... ie. *beefheart* doesn't find Captain Beefheart ... neither does *Beefheart*
To find Captain Beefheart you can write just Beefheart (without the stars).
If anything, then the *Abc* is mostly used as infix syntax AFAIK.
i.e. I would expect that *bc* finds abcd (as bc is word infix).