Re: The order input events are processed.

[Richard Stallman]

The whole point of unread-post-input-method-events is to be processed
first.  Changing it to operate last will break it.  When an input method
runs and generates a sequence of several events, those events must
be processed before whatever is in unread-command-events.

We need to fix the bug, but not by changing the meaning of this feature.

One way to fix it is for sit_for to test these variables directly
so that it doesn't need to change them.  Does anyone see a problem
with that?  Would someone like to implement that?