From: nobu.nokada@...
Date: 2003-06-24T17:08:31+09:00
Subject: Re: [REXML] ParseExtension

Hi,

At Tue, 24 Jun 2003 10:22:14 +0900,
Sean Russell wrote:
> > Furthermore, sorry if I'm missing something, you seem to mix
> > bare Exception, ParseException and RuntimeError inconsistently.
> 
> Do I?  I don't remember conciously generating a RuntimeError; I *may*
> generate plain Exceptions, although I tried to be consistent in using
> ParseExceptions in the parser... I don't use ParseExceptions anywhere
> else in REXML, I hope.

Raising with just message sends RuntimeError, not Exception.
Ruby itself never raise raw Exception.  You use such
RuntimeError, Exception and ParseException.

> > And, in parsers/baseparser.rb, "raise $!" hides further
> > backtrace.  This might make debug harder.
> 
> Oh, reraising an exception doesn't preserve the backtrace?  That
> surprises me, and it's not very helpful.  I'll check on that.

You can do just `raise' without arguments.  Then the backtrace
is preserved.

-- 
Nobu Nakada