From: Jeremy Hinegardner <jeremy@...>
Date: 2007-05-23T04:16:37+09:00
Subject: behavior of -rsomegem differs from require 'somegem'

I just encountered something today and I'm not sure if this should be
the expected behaviour.  Most likely I'm doing something odd here. I
believe this only affects items require'd as gems.

    > ruby -v
    ruby 1.8.6 (2007-03-13 patchlevel 0) [i686-darwin8.9.1]

    > cat j.rb
    require 'rubygems'
    require 'fastercsv'
    
    puts $:.sort.join("\n")
  
    > ruby j.rb
    .
    /opt/local/lib/ruby/1.8
    /opt/local/lib/ruby/1.8/i686-darwin8.9.1
    /opt/local/lib/ruby/gems/1.8/gems/fastercsv-1.2.0/bin
    /opt/local/lib/ruby/gems/1.8/gems/fastercsv-1.2.0/lib
    /opt/local/lib/ruby/site_ruby
    /opt/local/lib/ruby/site_ruby/1.8
    /opt/local/lib/ruby/site_ruby/1.8/i686-darwin8.9.1
    /opt/local/lib/ruby/vendor_ruby
    /opt/local/lib/ruby/vendor_ruby/1.8
    /opt/local/lib/ruby/vendor_ruby/1.8/i686-darwin8.9.1

Okay, that is all well and good, but how about if we put those require's
on the command line and use -e.

    > ruby -rubygems -rfastercsv -e 'puts $:.sort.join("\n")'
    ruby: no such file to load -- fastercsv (LoadError)

Hmm... odd (to me).  Lets try something else

    > ruby -rubygems -e 'require "fastercsv"' -e 'puts  $:.sort.join("\n")'
    .
    /opt/local/lib/ruby/1.8
    /opt/local/lib/ruby/1.8/i686-darwin8.9.1
    /opt/local/lib/ruby/gems/1.8/gems/fastercsv-1.2.0/bin
    /opt/local/lib/ruby/gems/1.8/gems/fastercsv-1.2.0/lib
    /opt/local/lib/ruby/site_ruby
    /opt/local/lib/ruby/site_ruby/1.8
    /opt/local/lib/ruby/site_ruby/1.8/i686-darwin8.9.1
    /opt/local/lib/ruby/vendor_ruby
    /opt/local/lib/ruby/vendor_ruby/1.8
    /opt/local/lib/ruby/vendor_ruby/1.8/i686-darwin8.9.1

Is this the expected behaviour that -rsomegem behaves differently than
'require "somegem"'.  Is the handling of -r different than 'require'

enjoy,

-jeremy

--
========================================================================
Jeremy Hinegardner                              jeremy@hinegardner.org