From: nobu.nokada@...
Date: 2003-07-16T05:23:59+09:00
Subject: Re: Adding Information to Exceptions

Hi,

At Tue, 15 Jul 2003 22:17:11 +0900,
Tim Hunter wrote:
> def read_file(name)
>     raise MyError.new("line 1"), "Unable to read file: #{name}"

Kernel#raise calls #exception method of the first argument with
the rest, and throws the result.

In 1.6, Exception#exception creates new instance of the class
of self, but in 1.8 just sets mesg and backtrace to a clone.

revision 1.34
date: 2001/11/13 08:19:51;  author: matz;  state: Exp;  lines: +2 -2
* error.c (exc_exception): set "mesg" directly to the clone.  it
  might be better to set mesg via some method for flexibility.

-- 
Nobu Nakada