next-error insists on split windows

[Dan Jacobson]

Often we do M-x compile or M-x grep, and then a lot of next-error (C-x `).
Well, if during those lots of next-error, we do delete-other-windows (C-x 1)
to get a nice big full window, upon the next next-error, we are forced
to accept having to share our window with the *grep* or *compilation*
buffer again, for no good reason.  Then best we can do is use
enlarge-window, but not to the max, else the *grep* or *compile*
window will come back for its 50% next time we do next-error.
emacs-version "21.4.1"