Frederick Cheung wrote in post #981180:
> On Feb 11, 3:36pm, John Merlino <li...@ruby-forum.com> wrote:
>>
>> readline.c: In function username_completion_proc_call:
>> readline.c:730: error: username_completion_function undeclared (first
>> use in this function)
>> readline.c:730: error: (Each undeclared identifier is reported only once
>> readline.c:730: error: for each function it appears in.)
>> make[1]: *** [readline.o] Error 1
>> make: *** [all] Error 1
>>
> Well it's clearly a readline based problem - did you try passing --
> with-readline-dir=$rvm_path/usr  as you did when building 1.9.2 ?
>
> Fred

Yes, that worked.



So now I can switch between rvm versions:

MacBook-Pro:~ jmerlino$ rvm use 1.8.7
Using /Users/jmerlino/.rvm/gems/ruby-1.8.7-p330
MacBook-Pro:~ jmerlino$ rvm use 1.9.2
Using /Users/jmerlino/.rvm/gems/ruby-1.9.2-p136

However, I try to create rails 2 project and got an uninviting error:

MacBook-Pro:~ jmerlino$ rails _2.3.5_ myproject
/Users/jmerlino/.rvm/rubies/ruby-1.9.2-p136/lib/ruby/1.9.1/rubygems.rb:762:in 
`report_activate_error': RubyGem version error: rails(3.0.3 not = 2.3.5) 
(Gem::LoadError)
    from 
/Users/jmerlino/.rvm/rubies/ruby-1.9.2-p136/lib/ruby/1.9.1/rubygems.rb:219:in 
`activate'
    from 
/Users/jmerlino/.rvm/rubies/ruby-1.9.2-p136/lib/ruby/1.9.1/rubygems.rb:1065:in 
`gem'
    from /Users/jmerlino/.rvm/gems/ruby-1.9.2-p136/bin/rails:18:in 
`<main>'

Do I need to do something to Rails as well?

Thanks for response.

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