title: How do I use Ruby debugger in Emacs?
body: <p>I am writing Ruby in Emacs, but my Emacs skills are actually pretty low. What I can do, is open the project, TDD using M-x rinari-test, or play inferior Ruby in the second window using M-x run-ruby. Now I woul like to start using debugger from StdLib. I am able to summon it from irb by saying:</p>
  
  <pre><code>require 'debug'
  </code></pre>
  
  <p>Upon which I get into a prompt</p>
  
  <pre><code>(rdb:1)
  </code></pre>
  
  <p>but there my aptitude ends. I don't even know how to step into a file. Typing 'help' brought a screenful, but it didn't help me to finally start debugging my buggy gem. Online, everybody writes about things such as "rdebug" or "ruby-debug" or whatever which I firstly don't want to use and secondly, being a muggle, I am unable to install on my Debian. Please help!!!</p>