/etc/X11/sawfish/site-init.d/00menu.jl is in sawfish 1:1.11-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | ; load the debian menu
(require 'debian-menu)
; install it
(setq apps-menu debian-menu)
|