possible Errors in Emacs.el ?

[Henry.Helm@t-online.de (Henry Helm)]

Hello dear developers,
I have downloaded the Emacs 21.1-Version and compared some syntax of commands.
I found the following parts, which may be errors in the *.el - Files:

case-fold-search 	against case-fold-serch
	(setq case-fold-search (cdr case-fold)))
	(case-fold-serch t))

C_FILLPATTERN 		against C_FILL_PATTERN (in idlw-rinfo.el)
	"C_COLOR" "C_FILLPATTERN" "C_LINESTYLE"
	("C_COLOR") ("C_FILL_PATTERN") ("C_LINESTYLE")

redraw-mode-line 	against redraw-modeline 
	(if (boundp 'redraw-mode-line)
	(if (fboundp 'redraw-modeline)

WORLDTITLE 		against WOLRDTITLE
	"WORLDINFO" "WORLDTITLE" "IDLGRVRMLBOTTOM")
	("UVALUE") ("WOLRDTITLE") ("WORLDINFO")))

SUPPRESS_VALUE		against SUPRESS_VALUE
	("SENSITIVE") ("SUPPRESS_VALUE") ("TITLE")
	("SCROLL") ("SUPRESS_VALUE") ("TITLE")

prefered-coding-system	against preferred-coding-system
	(or (get-charset-property charset 'prefered-coding-system)
	(put-charset-property (car (car l)) 'preferred-coding-system (cdr (car 
l)))

I'am don't know all about with lisp-syntax, I have compared these parts only.
I hope, this possible errors can help You to correct the emacs-source-code.
Is this a apropriate way to check for errors ?

Henry Helm,
Dresden