bug#10539: 24.0.92; low display-time-interval makes Emacs slow

[martin rudalics]

>>  >> Can you tell me which flag (with-current-buffer (other-buffer)) sets?
>>  >
>>  > windows_or_buffers_changed, AFAIR.
>>
>> (with-current-buffer (other-buffer)) does neither change the contents of
>> a window nor those of a buffer (unless it recreates *scratch*).
>
> Sorry, I don't understand what you are trying to convey.

If I understand windows_or_buffers_changed correctly, it is only set
when either a window changes (resized, another buffer displayed in it,
...) or a buffer is changed (text inserted, `point' changes, ...).
Neither `with-current-buffer' nor `other-buffer' change a window or a
buffer.  What am I missing?

martin