Variable: c-symbol-start
c-symbol-start is a buffer-local variable defined in cc-engine.el.gz.
Documentation
Regexp that matches the start of a symbol, i.e. any identifier or keyword. It's unspecified how far it matches. Does not contain a \| operator at the top level.
Source Code
;; Defined in /usr/src/emacs/lisp/progmodes/cc-engine.el.gz
(c-declare-lang-variables)