semantic-lex-newline

semantic-lex-newline is a variable defined in `lex.el'.
Its value is

((looking-at "\\s-*\\(\n\\|\\s>\\)")
 (semantic-lex-push-token
  (semantic-lex-token 'newline
		      (match-beginning 1)
		      (match-end 1))))

Documentation:
Detect and create newline tokens.