Debugging in ruby 1.9

Question

What do you guys use for debugging in ruby 1.9? rdebug doesn't seem to be compatible.. is there anything out there?

Answer 1

ruby-debug19 is not maintained anymore. All the other answers are outdated.

But there's an alternative:

debugger to the rescue!

Put this in your Gemfile:

gem 'debugger', group: [:development, :test] 

It just works. - And it is included in the rails Gemfile since 3.2.something to replace ruby-debug19. It has the exact same functionality and is actively maintained.

Answer 2

UPDATE FOR RUBY 2.0+ and FOLLOWING

byebug is the currently recommended debugger for Ruby 2.0+

This issue has been documented here, and cldwalker, the author of debugger, notes that debugger will be scoped to Ruby 1.9.2 and 1.9.3.

UPDATE 2

It is true that ruby-debug is not actively maintained even if I can't find anywhere that is not maintained any longer.

You can use the new debugger gem if you need a help to start with the new gem you can see Ryan Bates rails cast.

In your Gemfile put:

gem 'debugger', group: [:development, :test] 

You can then add a breakpoint anywhere in your code using the debugger keyword.

YOU CAN STILL USE

linecache19 and ruby-debug-base19 with:

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

OLD ANSWERS

Just an add on about this with rvm, ruby 1.9.1-p378. True story is that even if ruby-debug is 1.9.x ready, linecache-0.43 is not. The solution is to install:

gem install ruby-debug19 

This solves the problem for me.

OLD UPDATE

If you are having problems with ruby 1.9.2 and Rails 3 debugging putting:

gem 'ruby-debug-base19', "0.11.24" gem 'ruby-debug19', "0.11.6" 

In your Gemfile and doing a

bundle install 

Will make you a happy debugger again.