Variable: copyright-regexp
copyright-regexp is a customizable variable defined in
copyright.el.gz.
Value
"\\(©\\|@copyright{}\\|[Cc]opyright\\s *:?\\s *\\(?:(C)\\)?\\|[Cc]opyright\\s *:?\\s *©\\)\\s *[^0-9\n]*\\s *\\([1-9]\\([-0-9, ';/*%#\n –]\\|\\s<\\|\\s>\\)*[0-9]+\\)"
Documentation
What your copyright notice looks like.
The second \( \) construct must match the years.
Source Code
;; Defined in /usr/src/emacs/lisp/emacs-lisp/copyright.el.gz
;;;###autoload(put 'copyright-at-end-flag 'safe-local-variable 'booleanp)
(defcustom copyright-regexp
"\\(©\\|@copyright{}\\|[Cc]opyright\\s *:?\\s *\\(?:(C)\\)?\
\\|[Cc]opyright\\s *:?\\s *©\\)\
\\s *[^0-9\n]*\\s *\
\\([1-9]\\([-0-9, ';/*%#\n\t–]\\|\\s<\\|\\s>\\)*[0-9]+\\)"
"What your copyright notice looks like.
The second \\( \\) construct must match the years."
:type 'regexp)