(display_buffer): Do not set split_height_threshold to twice the
value of window_min_height to avoid changing the value of a
customizable variable. Rather explicitly check whether the
- height of the window that shall be splitted is at least as large
+ height of the window that shall be split is at least as large
as split_height_threshold.
(Fwindow_full_width_p): New defun.
(syms_of_window): Defsubr it.