git-svn-id: https://jules.scsys.co.uk/repository/shadowcat-code/scratchpad/matthewt/sig/lib@1146
8a6f57db-631f-0410-b083-dc7c4259d016
<@rjbs> forgetting++
<@rjbs> drinking++
<@rjbs> huh?
+%
+< anno> map /arse/ ? $_ : (), @array; # find arse with map