From: ext-golla.anil-kumar@...
Date: 2009-03-31T00:52:23+09:00
Subject: REG: How can we debug a ruby script

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Hi,
I want to debug a ruby script using -rdebug option.
The following is the source code: with file fact.rb.
Fact.rb
def fact(n)
  return 1 if n =3D=3D 0
  f =3D 1
  n.downto(1) do |i|
    f *=3D i
  end
  return f
end
print fact(2), "\n"

Debugging
When I run the following command and type 'n' for debugin the next line, it=
 is going in to some other files.
As shown below.
C:\ruby\samples\RubySrc-1.8.6-p111\sample>ruby -rdebug fact.rb
Debug.rb
Emacs support available.

c:/ruby/lib/ruby/site_ruby/1.8/ubygems.rb:10:require 'rubygems'
(rdb:1) list
[5, 14] in c:/ruby/lib/ruby/site_ruby/1.8/ubygems.rb
   5  # All rights reserved.
   6  # See LICENSE.txt for permissions.
   7  #++
   8
   9
=3D> 10  require 'rubygems'
(rdb:1) n
c:/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:10:require 'rbconfig'
(rdb:1) n
c:/ruby/lib/ruby/1.8/i386-mswin32/rbconfig.rb:5:module Config
(rdb:1) n
c:/ruby/lib/ruby/1.8/i386-mswin32/rbconfig.rb:153:RbConfig =3D Config # com=
patibility for ruby-1.9
(rdb:1) n
c:/ruby/lib/ruby/1.8/i386-mswin32/rbconfig.rb:154:CROSS_COMPILING =3D nil u=
nless defined? CROSS_COMPILING
(rdb:1) n
c:/ruby/lib/ruby/1.8/i386-mswin32/rbconfig.rb:154:CROSS_COMPILING =3D nil u=
nless defined? CROSS_COMPILING
(rdb:1) n
c:/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:12:module Gem
(rdb:1) n
c:/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:18:module Kernel
(rdb:1)'

What is the command that iam supposed to used to debug actual source code, =
line by line( with out moving to other files)?

Thanks and Regards,
Anil  kumar




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