From: Joel VanderWerf <joelvanderwerf@...>
Date: 2010-09-09T03:58:45+09:00
Subject: Re: Portable method of launching another Ruby interpreter

On 09/08/2010 10:56 AM, 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?
>

Doesn't it work on jruby?

$ jruby -v -rrbconfig -e 'p 
File.join(*Config::CONFIG.values_at("bindir", "ruby_install_name"))'
jruby 1.5.0 (ruby 1.8.7 patchlevel 249) (2010-05-12 6769999) (Java 
HotSpot(TM) 64-Bit Server VM 1.6.0_20) [amd64-java]
"/usr/local/jruby/bin/jruby"