Variable: semantic-imenu-bucketize-file
semantic-imenu-bucketize-file is a customizable and buffer-local
variable defined in imenu.el.gz.
Documentation
Non-nil if tags in a file are to be grouped into buckets.
Source Code
;; Defined in /usr/src/emacs/lisp/cedet/semantic/imenu.el.gz
;;;###autoload
(defcustom semantic-imenu-bucketize-file t
"Non-nil if tags in a file are to be grouped into buckets."
:type 'boolean)