text: from httpolice.citation import RFC
  from httpolice.parse import (auto, fill_names, many, octet, octet_range, pivot,
                               skip, string1)
  from httpolice.syntax.common import SP
  from httpolice.syntax.rfc3986 import URI_reference
  
  
  NQSCHAR = (octet_range(0x20, 0x21) | octet_range(0x23, 0x5B) |
             octet_range(0x5D, 0x7E))                                     > auto
  NQCHAR = (octet(0x21) | octet_range(0x23, 0x5B) |
            octet_range(0x5D, 0x7E))                                      > auto
  
  scope_token = string1(NQCHAR)                                           > pivot
  scope = scope_token % many(skip(SP) * scope_token)                      > pivot
  
  error = string1(NQSCHAR)                                                > pivot
  error_description = string1(NQSCHAR)                                    > pivot
  error_uri = URI_reference                                               > pivot
  
  
  fill_names(globals(), RFC(6749))
  