ibuffer-sorting-functions-alist

ibuffer-sorting-functions-alist is a variable defined in `ibuffer.el'.
Its value is shown below.

Documentation:
An alist of functions which describe how to sort buffers.

Note: You most likely do not want to modify this variable directly;
use `define-ibuffer-sorter' instead.

The alist elements are constructed like (NAME DESCRIPTION FUNCTION)
Where NAME is a symbol describing the sorting method, DESCRIPTION is a
short string which will be displayed in the minibuffer and menu, and
FUNCTION is a function of two arguments, which will be the buffers to
compare.

Value:

((filename/process "file name" #[514 "\300@!\206\301@!\302!\205\303!\262\300@!\206,\301@!\302!\205*\303!\262\231\207" [buffer-file-name get-buffer-process processp process-name] 6 "\n\n(fn A B)"]) (size "size" #[514 "r@q\210\300 )r@q\210\300 )W\207" [buffer-size] 4 "\n\n(fn A B)"]) (alphabetic "buffer name" #[514 "\300@!\300@!\231\207" [buffer-name] 5 "\n\n(fn A B)"]) (mode-name "major mode name" #[514 "r@q\210\301!)\227r@q\210\301!)\227\231\207" [mode-name format-mode-line] 5 "\n\n(fn A B)"]) (major-mode "major mode" #[514 "\300\301\302@\"!\227\300\301\302@\"!\227\231\207" [symbol-name buffer-local-value major-mode] 7 "\n\n(fn A B)"]))