Variable: subword-backward-function
subword-backward-function is a variable defined in subword.el.gz.
Value
subword-backward-internal
Documentation
Function to call for backward subword movement.
Source Code
;; Defined in /usr/src/emacs/lisp/progmodes/subword.el.gz
(defvar subword-backward-function 'subword-backward-internal
"Function to call for backward subword movement.")