git-svn-id: https://jules.scsys.co.uk/repository/shadowcat-code/scratchpad/matthewt/sig/lib@2466
8a6f57db-631f-0410-b083-dc7c4259d016
-( $#_ & 0b11111110 ) .. -1 ]; # get even number of array
elements from the rear to populate hash
< Grinnz> found the assembly programmer
+%
+< huf> the web is a posterchild for a situation where unexpected data can't
+ ever get into unexpected places - it deals with well defined,
+ unchanging apis and clients, everyone is highly competent, etc
+< huf> it's also not user-facing in any way so we're all safe