Minor bug with Author -> Author Sort

I'm not sure where Calibre bug reports go, and if this is even a fixable bug, but I noticed the Author to Author Sort conversion can't handle some circumstances. "The Dalai Lama" gets converted to "Lama, The Dalai" when it should be "Dalai Lama, The", and "Ursula K. Le Guin" gets converted to "Guin, Ursula K. Le" when it should be "Le Guin, Ursula K."

Maybe the former can be fixed by implementing a rule for moving only the indefinite article when the field says "The XXXXX XXXX" or something. I have no idea how the latter could be fixed for only those cases, maybe someone else does.