;; call only with (label (label value dispval [#t]) ...)
;; NB// sadly this block is redundantly almost identical to the s:select
;; fix that later ...
(define (s:optgroup dat)
  (let ((label (car dat))
	(rem   (cdr dat)))
    (if (null? rem)
	(s:common-tag "OPTGROUP" 'label label)
	(s:common-tag "OPTGROUP" `('label ,label))
	(let loop ((hed (car rem))
		   (tal (cdr rem))
		   (res (list (conc "<OPTGROUP label=" label))))
	  ;; (print "hed: " hed " tal: " tal " res: " res)
	  (let ((new (append res (list (if (list? (cadr hed))
					   (s:optgroup hed)
					   (s:option hed))))))

;; return (dat remdat)
(define (formdat:read-dat dat key)
  (let ((index (substring-index key dat))) ;; (string-search-positions key dat)))
    (if (or (not index)
	    (null? index)) ;; the key was not found
	#f
	(let* ((datstr (open-input-string dat))
	       (result (read-string (caar index) datstr))
	       ;; (result (read-string (caar index) datstr))
	       (result (read-string index datstr))
	       (remdat (read-string #f datstr)))
	  (close-input-port datstr)
	  (list result remdat)))))

 ;; inp is port to read data from, maxsize is max data allowed to read (total)
(define (formdat:dat->list inp maxsize #!key (debug-port #f))
  ;; read 1Meg chunks from the input port. If a block is not complete

(define (s:set! key val)
  (session:curr-page-set! s:session key val))

(define (s:del! key)
  (session:page-var-del! s:session key))

(define (s:get-n-del! key)
#;(define (s:get-n-del! key)
  (let ((val (session:page-get s:session key)))
    (session:del! s:session key)
    (session:del! s:session val key)
    val))

;; these are session wide
(define (s:session-var-get key . params) 
  (session:get s:session "*sessionvars*" key params))

(define (s:session-var-set! key val)