Variable: even-window-sizes
even-window-sizes is a customizable variable defined in window.el.gz.
Value
t
Documentation
If non-nil display-buffer will try to even window sizes.
Otherwise display-buffer will leave the window configuration
alone. Special values are height-only to even heights only and
width-only to even widths only. Any other value means to even
any of them.
This variable was added, or its default value changed, in Emacs 25.1.
Probably introduced at or before Emacs version 25.1.
Aliases
Source Code
;; Defined in /usr/src/emacs/lisp/window.el.gz
(defcustom even-window-sizes t
"If non-nil `display-buffer' will try to even window sizes.
Otherwise `display-buffer' will leave the window configuration
alone. Special values are `height-only' to even heights only and
`width-only' to even widths only. Any other value means to even
any of them."
:type '(choice
(const :tag "Never" nil)
(const :tag "Side-by-side windows only" width-only)
(const :tag "Windows above or below only" height-only)
(const :tag "Always" t))
:version "25.1"
:group 'windows)