Any way to prevent window splits for a window or a major-mode

[Robert Weiner <rsw@gnu.org>]

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I have looked through the Windows sections of the Elisp manual but did not
see an option that would do this specifically, though I imagine it must be
there.

For a window, I would like to be able to mark it so it is never split.
For a major mode, I would like to say for any windows displaying buffers in
this major mode, don't split them.

Is there a simple way to program that?

Thanks,

Bob

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