From: Ryan Davis <ryand-ruby@...>
Date: 2010-09-09T06:07:59+09:00
Subject: Re: Portable method of launching another Ruby interpreter


On Sep 8, 2010, at 10:56 , Tony Arcieri wrote:

> I'm working on a project that requires a "clean", newly launched Ruby
> interpreter to perform a little magic.
> 
> I'm looking for a portable way to determine the path to the Ruby interpreter
> being used by the current environment. At the very least I'd like for this
> to work across Ruby 1.8.7, Ruby 1.9.2, JRuby, and Rubinius.
> 
> I've seen people suggest using Config::CONFIG for this, however from what I
> can tell this doesn't work on JRuby.
> 
> Are there any portable solutions to this problem?

I always use Gem.ruby

I'm not sure if the jruby team has patched that to work for jars or not (or if it even needs patching for that matter--I don't use jruby, sorry).