Variable: window-min-width
window-min-width is a customizable variable defined in window.el.gz.
Value
10
Documentation
The minimum total width, in columns, of any window.
The value has to accommodate two text columns as well as margins,
fringes, a scroll bar and a right divider, if present. A value
less than window-safe-min-width is ignored. The value of this
variable is honored when windows are resized or split.
Applications should never rebind this variable. To resize a
window to a width less than the one specified here, an
application should instead call window-resize with a non-nil
IGNORE argument. In order to have split-window make a window
narrower, explicitly specify the SIZE argument of that function.
This variable was added, or its default value changed, in Emacs 24.1.
Source Code
;; Defined in /usr/src/emacs/lisp/window.el.gz
(defcustom window-min-width 10
"The minimum total width, in columns, of any window.
The value has to accommodate two text columns as well as margins,
fringes, a scroll bar and a right divider, if present. A value
less than `window-safe-min-width' is ignored. The value of this
variable is honored when windows are resized or split.
Applications should never rebind this variable. To resize a
window to a width less than the one specified here, an
application should instead call `window-resize' with a non-nil
IGNORE argument. In order to have `split-window' make a window
narrower, explicitly specify the SIZE argument of that function."
:type 'integer
:version "24.1"
:group 'windows)