ruby-debug with Ruby 1.9.3?

Update (April 28, 2012)

Try the new debugger gem as a replacement for ruby-debug.

^{(credit to @ryanb)}

Update (March 2, 2012)

Installation of linecache19 and ruby-debug-base19 can be easily done with:

bash < <(curl -L https://raw.github.com/gist/1333785)

^{(credit to @fredostarr)}

Original answer

Have you looked at ruby-debug19 on ruby-1.9.3-preview1?

Here's a temporary solution: http://blog.wyeworks.com/2011/11/1/ruby-1-9-3-and-ruby-debug

Excerpt from the site:

First download linecache19-0.5.13.gem and ruby-debug-base19-0.11.26.gem from http://rubyforge.org/frs/?group_id=8883, then …

$ gem install linecache19-0.5.13.gem Building native extensions.  This could take a while...Successfully installed linecache19-0.5.131 gem installed$ gem install ruby-debug-base19-0.11.26.gem -- --with-ruby-include=/Users/santiago/.rbenv/source/ruby-1.9.3-p0  Building native extensions.  This could take a while...Successfully installed ruby-debug-base19-0.11.261 gem installed$ irbirb(main):001:0> require 'ruby-debug'=> true

Installation of linecache19 and ruby-debug-base19 can be easily done with:

bash < <(curl -L https://raw.github.com/gist/1333785)

Someone else posted in a comment to try Pry, which is what I did. This is what's necessary for Rails:

# Gemfilegem 'pry-rails'# In your Rails Project where you want a 'debugger'puts 'i want to insert some code between this'binding.pryputs 'and this'

Immediately after installing I notice my .irbrc doesn't load, so I don't get pretty console output. I also added this to my '~/.pryrc'

# setting up pry to have irb helpers like reload!if defined?(Rails) && Rails.env  extend Rails::ConsoleMethodsend

Pry has some nice features that I've wanted to check out, and I may yet return to ruby-debug once there's a simple way to integrate it into a Rails project for Ruby 1.9.3. I can run the curl command from the other answers, but this is something I'll have to point my teammates to for our Rails project, so it doesn't scale well IMO.