From: Gavin Kistner <gavin.kistner@...>
Date: 2007-12-22T05:04:49+09:00
Subject: Re: Matrix can't be subclassed

From: Trans [mailto:transfire@gmail.com] 
> Matrix can't be subclassed b/c of definitions like this:
> 
>   #
>   # Creates an +n+ by +n+ identity matrix.
>   #   Matrix.identity(2)
>   #     => 1 0
>   #        0 1
>   #
>   def Matrix.identity(n)
>     Matrix.scalar(n, 1)
>   end
>   class << Matrix
>     alias unit identity
>     alias I identity
>   end
> 
> It should be:
> 
>   def Matrix.identity(n)
>     scalar(n, 1)
>   end
>   class << Matrix
>     alias unit identity
>     alias I identity
>   end
> 
> There are a number of other definitions like this.

File a bug, then file a patch. It's easy enough to fix, right?

Also, did you intend to write "class << self"? If not, I'm uncertain why
you included that second section.