From: "Peña, Botp" <botp@...>
Date: 2008-07-29T16:58:42+09:00
Subject: Re: and and or in case

From: Peña, Botp [mailto:botp@delmonte-phil.com] 
# if 1==1 and 2==2
#   p "ok"
# end
# "ok"
# #=> nil
# 
# case
# when 1==1 and 2==2
#   p "ok"
# end
# SyntaxError: compile error

note, when i use parens (to override), it works

case
when (1==1 and 2==2)
  p "ok"
end
"ok"
#=> nil


but still it does not answer the difference in behaviour to that of ordinary if-elsif clause...