获取emacs realgud：开始工作

需要一些帮助才能让realgud更好地使用pry remote

这是一个示例ruby文件（x.rb）

在shell缓冲区中：

在emacs中：

M-x realgud:pry
pry-remote ; enter this at the prompt

这就是我在emacs中看到的

File Edit Options Buffers Tools Inf-Ruby Debugger Help

    32:   end
    33:
    34:   return_value
    35: end

=>[0G[1] pry(#<PryNav::Tracer>)>

-=--:**--F1  *pry +No filename+ shell*   Bot L53    (Comint:r
      stop unless RUBY_VERSION == '1.9.2'

      return_value = nil
      command = catch(:breakout_nav) do      # Coordinates w$
        return_value = yield
=>      {}    # Nothing thrown == no navigational command
      end

-=--:%%--F1  tracer.rb      24% L21    (Ruby ShortKeys) ---

M-x realgud:pry
pry-remote ; enter this at the prompt

File Edit Options Buffers Tools Inf-Ruby Debugger Help

    32:   end
    33:
    34:   return_value
    35: end

=>[0G[1] pry(#<PryNav::Tracer>)>

-=--:**--F1  *pry +No filename+ shell*   Bot L53    (Comint:r
      stop unless RUBY_VERSION == '1.9.2'

      return_value = nil
      command = catch(:breakout_nav) do      # Coordinates w$
        return_value = yield
=>      {}    # Nothing thrown == no navigational command
      end

-=--:%%--F1  tracer.rb      24% L21    (Ruby ShortKeys) ---

=>[0G[1] pry(#<PryNav::Tracer>)> next 1
next 1

Command down is not implemented for this debugger
Command up is not implemented for this debugger