the ordinary cases
  the tag alone                          fast=blat         ra=blat         
  with other tags around it              fast=blat         ra=blat         
  no trailing newline                    fast=blat         ra=blat         
  a tab after the tag                    fast=blat         ra=blat         
  extra blanks after the tag             fast=blat         ra=blat         

the cases that must NOT match
  a longer tag that starts the same      fast=(none)       ra=(none)       
  the tag as a value                     fast=(none)       ra=(none)       
  no such tag                            fast=(none)       ra=(none)       
  the tag with nothing after it          fast=(none)       ra=(none)       

the edges
  empty settings                         fast=(none)       ra=(none)       
  only a newline                         fast=(none)       ra=(none)       
  leading blank lines                    fast=blat         ra=blat         
  leading spaces on the line             fast=blat         ra=blat         
  two of them: walk takes the first, ra the last fast=blat         ra=view         differ, known

NULL settings: fast=(none)

0 disagreements
