Variable: mouse-buffer-menu-maxlen
mouse-buffer-menu-maxlen is a customizable variable defined in
mouse.el.gz.
Value
20
Documentation
Number of buffers in one pane (submenu) of the buffer menu.
If we have lots of buffers, divide them into groups of
mouse-buffer-menu-maxlen and make a pane (or submenu) for each one.
Probably introduced at or before Emacs version 20.3.
Source Code
;; Defined in /usr/src/emacs/lisp/mouse.el.gz
(defcustom mouse-buffer-menu-maxlen 20
"Number of buffers in one pane (submenu) of the buffer menu.
If we have lots of buffers, divide them into groups of
`mouse-buffer-menu-maxlen' and make a pane (or submenu) for each one."
:type 'integer)