The SRFI document gives,

   string-filter s char/char-set/pred [start end] -> string
   string-delete s char/char-set/pred [start end] -> string

Yet the reference implementation switches the order giving,

   ;;; string-delete char/char-set/pred string [start end]
   ;;; string-filter char/char-set/pred string [start end]
   ...
   (define (string-delete criterion s . maybe-start+end)
   ...
   (define (string-filter criterion s . maybe-start+end)

I reviewed the SRFI-13 mailing list and c.l.scheme, but found no mention of
this issue.  Apologies if I've missed something.

-d

--
dvanhorn at cs dot uvm dot edu