# $Id$
# Matches the header part
  (?:Content-					# start of content header
  (?:Type: (?>\s*)				# rest of c/t header
    [\w-]+/[\w-]+				# content-type (any)
    |Disposition: (?>\s*)			# content-disposition hdr
    attachment)					# content-disposition
  ;(?>\s*)					# ; space or newline
  (?:file)?name=				# filename=/name= 
  |begin (?>\s+) [0-7]{3,4} (?>\s+)) 		# begin octal-mode