root@bertfordseo:/home/rlankford/ruby/keyword# rvm use 1.8.7
Using /usr/local/rvm/gems/ruby-1.8.7-p334
root@bertfordseo:/home/rlankford/ruby/keyword# ruby -v
ruby 1.8.7 (2011-02-18 patchlevel 334) [i686-linux]
root@bertfordseo:/home/rlankford/ruby/keyword# irb
ruby-1.8.7-p334 :001 > string = "test
ruby-1.8.7-p334 :002"> test
ruby-1.8.7-p334 :003"> test"
 => "test\ntest\ntest"
ruby-1.8.7-p334 :004 > string.split('\n')
 => ["test\ntest\ntest"]
ruby-1.8.7-p334 :005 > string.each {|i| puts i}
test
test
test
 => "test\ntest\ntest"
ruby-1.8.7-p334 :006 > exit
root@bertfordseo:/home/rlankford/ruby/keyword# rvm use 1.9.2
Using /usr/local/rvm/gems/ruby-1.9.2-p180
root@bertfordseo:/home/rlankford/ruby/keyword# ruby -v
ruby 1.9.2p180 (2011-02-18 revision 30909) [i686-linux]
root@bertfordseo:/home/rlankford/ruby/keyword# irb
ruby-1.9.2-p180 :001 > string = "test
ruby-1.9.2-p180 :002"> test
ruby-1.9.2-p180 :003"> test"
 => "test\ntest\ntest"
ruby-1.9.2-p180 :004 > string.split('\n')
 => ["test\ntest\ntest"]
ruby-1.9.2-p180 :005 > string.each {|i| puts i}
NoMethodError: undefined method `each' for "test\ntest\ntest":String
        from (irb):5
        from /usr/local/rvm/rubies/ruby-1.9.2-p180/bin/irb:16:in `<main>'
ruby-1.9.2-p180 :006 >