Variable: c-modified-constant
c-modified-constant is a buffer-local variable defined in
cc-engine.el.gz.
Documentation
Regexp that matches a “modified” constant literal such as "L\\='a\\='",
a “long character”. In particular, this recognizes forms of constant
which c-backward-sexp needs to be called twice to move backwards over.
Source Code
;; Defined in /usr/src/emacs/lisp/progmodes/cc-engine.el.gz
(c-declare-lang-variables)