Re: Emacs design and architecture. How about copy-on-write?

[Ihor Radchenko]

Eli Zaretskii <eliz@gnu.org> writes:

>> What about "quick-and-dirty" layout being "empty" window that is also
>> blocked for user interaction. (I am assuming that redisplay is
>> asynchronous here). Then, the user will be blocked from interacting
>> with a single problematic window being redisplayed, but could still work
>> with other windows/buffers without waiting for Emacs to "unhang".
>
> You will need to describe in more detail what you mean by "user
> interaction with a window".  In Emacs, users don't interact with
> windows, they interact with Emacs.  Did you mean that such a window
> should not be the selected one?

I meant that such a window can be selected, but attempting to do
anything that interacts with the window should cause user-error while
the window is being processed by redisplay.

I imagine that users will be allowed to, at least, C-x o away from the
window or switch buffer. But not enter text or run arbitrary commands.

-- 
Ihor Radchenko // yantar92,
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