bug#24030: 25.0.95; mouse-drag-region regression

[Stefan Monnier]

>> Looks fine to me, tho I don't think we should use with-selected-window
>> here, but only with-current-buffer.
> How is the latter different in this particular context?

The end result will probably be very similar in practice, but if you
look at the definition of with-selected-window and of all the functions
it calls, you'll see that with-current-buffer is super-extra lean
in comparison.  And in the current situation all we care about is to set
the buffer-local value of a variable, so the window is of no importance
(other than to find the relevant buffer).


        Stefan