Add T as an alias for *STANDARD-WINDOW* #38

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@sjl
sjl commented Jan 6, 2017

Fixes #34

This is a little verbose. An alternative would be to make a defun-window macro to hide the resolving, but I'm not sure I like that magicness.

Something else to consider: instead of a simple if, we could implement resolve-window like this:

(defun resolve-window (window-designator)
  (etypecase window-designator
    ((eql t) *standard-window*)
    (window window-designator)))

This would give a nicer error message if a user passes in something that's not either a window or t, but would be a bit more expensive in every single call. I have no strong feelings either way.

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