script/console error

I got the following error when I try to run the console. It used to
be able to run without problems.

script/console

Loading development environment.
/usr/local/lib/ruby/1.8/irb/completion.rb:10:in `require': no such
file to load -- readline (LoadError)
        from /usr/local/lib/ruby/1.8/irb/completion.rb:10
        from /usr/local/lib/ruby/1.8/irb/init.rb:252:in `require'
        from /usr/local/lib/ruby/1.8/irb/init.rb:252:in `load_modules'
        from /usr/local/lib/ruby/1.8/irb/init.rb:250:in `each'
        from /usr/local/lib/ruby/1.8/irb/init.rb:250:in `load_modules'
        from /usr/local/lib/ruby/1.8/irb/init.rb:21:in `setup'
        from /usr/local/lib/ruby/1.8/irb.rb:54:in `start'
        from /usr/local/bin/irb:13

Ray,

Ray,

  > /usr/local/lib/ruby/1.8/irb/completion.rb:10:in `require': no such
  > file to load -- readline (LoadError)

Have you tried
   http://www.oobaloo.co.uk/articles/2006/03/22/ruby-and-readline
   http://ruphus.com/code/rails/railsonubuntu-howto.html

(found with Google)

Alain

Thanks for the links.

I found that my ruby was not built with readline support because I
downloaded and installed the latest version 1.8.6, not the Ubuntu
package. What I did to fix it was to rebuild ruby with readline
support:

./configure --with-readline-dir=/usr/local
make
make install

Now script/console works as expected. However, before I included the
readline support, irb works but not script/console. Why?

Ray,