From: Good Night Moon <no.email.here@...>
Date: 2007-07-22T16:35:05+09:00
Subject: Syntax bug, in 1.8.5?  return not (some expr) <-- syntax error vs return (not (some expr)) <-- fine

Well, it's all in the subject, to me it looks like a parsing bug: 

class MyRect
  def intersects_good(other)
    return (not ((other.x1 < self.x0 or self.x1 < other.x0) and
                 (other.y1 < self.y0 or self.y1 < other.y0)))
  end            

  def intersects_bad(other)
    return  not ((other.x1 < self.x0 or self.x1 < other.x0) and
                 (other.y1 < self.y0 or self.y1 < other.y0))
  end
end

  foo> ruby -c myrect.rb
  myrect.rb:8: syntax error, unexpected kNOT, expecting kEND
      return  not ((other.x1 < self.x0 or self.x1 < other.x0) and
                 ^

Any comment? Is this known? Or just some hair in the Ruby grammar?