From: RichardOnRails <RichardDummyMailbox58407@...>
Date: 2011-02-04T08:55:28+09:00
Subject: Strange "ruby -r debug t.rb" for PickAxe ver. 2's Fibonacci example

Following are two examples of using ruby-debug on PickAxe ver. 2
Fibonacci example:
1) t.rb executed with "ruby -t debug t.rb", which lists ruby_debug.rb
code rather than t.rb code; and
2) t2,rb (with embedded "require 'ruby-debug'") run with "ruby t2.rb"
and correctly lists t2.rb code.

I'm running:
ruby 1.8.6
ruby-debug 0.10.3 (I believe; I list the gem info below)
WinXP-PRo/SP3

I hope the two listing present the issue clearly.

Thanks in Advance,
Richard

Command Window execution #1 for "ruby -t debug t.rb"
-------------------------------------------------------------------------------
K:\Temp\Test>dir *.rb/b
t.rb
t2.rb

K:\Temp\Test>type t.rb
def fact(n)
    if n <= 0
      1
    else
      n * fact(n-1)
    end
end

p fact(5)

K:\Temp\Test>ruby t.rb
120

K:\Temp\Test>ruby -r debug t.rb
Debug.rb
Emacs support available.

K:/_Utilities/ruby186-26_rc2/ruby/lib/ruby/site_ruby/1.8/ubygems.rb:
10:require 'rubygems'
(rdb:1) list 1-20
[1, 20] in K:/_Utilities/ruby186-26_rc2/ruby/lib/ruby/site_ruby/1.8/
ubygems.rb
   1  # This file allows for the running of rubygems with a nice
   2  # command line look-and-feel: ruby -rubygems foo.rb
   3  #--
   4  # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and
others.
   5  # All rights reserved.
   6  # See LICENSE.txt for permissions.
   7  #++
   8
   9
=> 10  require 'rubygems'
(rdb:1) q
Really quit? (y/n) y

K:\Temp\Test>"ruby -t debug t.rb"

Command window  #2 for "ruby t2.rb" with "require 'ruby-debug'
K:\Temp\Test>ruby -v
ruby 1.8.6 (2007-09-24 patchlevel 111) [i386-mswin32]

K:\Temp\Test>gem list ruby-debug

*** LOCAL GEMS ***

ruby-debug (0.10.3, 0.10.1, 0.10.0)
ruby-debug-base (0.10.3, 0.10.1, 0.10.0)
ruby-debug-ide (0.4.9, 0.1.10)

K:\Temp\Test>cd \

K:\>:===================================
K:\>:
K:\>cd K:\Temp\Test

K:\Temp\Test>type t2.rb
require 'ruby-debug'

def fact(n)
    if n <= 0
      1
    else
      debugger
      n * fact(n-1)
    end
end

p fact(5)

K:\Temp\Test>ruby t2.rb
t2.rb:8
n * fact(n-1)
(rdb:1) list 1-20
[1, 20] in t2.rb
   1  require 'ruby-debug'
   2
   3  def fact(n)
   4      if n <= 0
   5        1
   6      else
   7        debugger
=> 8        n * fact(n-1)
   9      end
   10  end
   11
   12  p fact(5)
(rdb:1) q
Really quit? (y/n) y

K:\Temp\Test>