define-lex-sexp-type-analyzer
define-lex-sexp-type-analyzer is a Lisp macro in `lex.el
'.
(define-lex-sexp-type-analyzer NAME DOC SYNTAX TOKEN)
Define a sexp type analyzer NAME with DOC string.
SYNTAX is the regexp that matches the beginning of the s-expression.
TOKEN is the lexical token returned when SYNTAX matches.