From: Bil Kleb <Bil.Kleb@...>
Date: 2007-07-22T16:54:59+09:00
Subject: Re: Syntax bug, in 1.8.5?  return not (some expr) <-- syntax error vs return (not (some expr)) <-- fine

Good Night Moon wrote:
> 
>   myrect.rb:8: syntax error, unexpected kNOT, expecting kEND
>       return  not ((other.x1 < self.x0 or self.x1 < other.x0) and

You need to use the '!' operator instead of the 'not' "conjunction".
It's a precedence thing -- the parser is seeing 'return not' -- see
parse.y in the source.

Regards,
--
Bil Kleb
http://fun3d.larc.nasa.gov