From: RichardOnRails <RichardDummyMailbox58407@...>
Date: 2010-06-05T10:55:07+09:00
Subject: Re: Ruby breakpoint has weird idea of what local_variables are?

On May 31, 3:16 pm, Robert Klemme <shortcut...@googlemail.com> wrote:
> 2010/5/31 RichardOnRails <RichardDummyMailbox58...@uscomputergurus.com>:
>
>
>
> > Hi,
>
> > I've got a 7-liner:
> > require 'rubygems'
> > require 'breakpoint'
>
> > a = 'aaa'
> > b = 'bbb'
> > breakpoint
> > c = 'ccc'
>
> > In a Command window, I've got:
> > K:\_Projects\Ruby\_Ruby_Tests\TestBreakpoint>ruby TestBreakpoint.rb
> > Executing break point at TestBreakpoint.rb:9
> > irb(main):001:0> local_variables
> > => ["id", "block", "_"]
> > irb(main):002:0> quit
>
> > This test is based on Recipe 17.10 of the Ruby Cookbook, O'Reilly,
> > 2006
>
> > Why doesn't the array allegedly presenting local variables:
> > 1. Include a, b & c?
> > 2. Present the things it does; what do they signify?
>
> > I'm running Ruby 1.8.6 over WinXP-Pro/SP3
>
> No idea.  However, the "regular" debugger does not have that issue:
>
> Robert@babelfish ~
> $ ruby19 -r debug x.rb
> Debug.rb
> Emacs support available.
>
> x.rb:1:a = 'aaa'
> (rdb:1) l
> [-4, 5] in x.rb
> => 1  a = 'aaa'
>    2  b = 'bbb'
>    3  # breakpoint
>    4  c = 'ccc'
> (rdb:1) b 4
> Set breakpoint 1 at x.rb:4
> (rdb:1) v l
>   a => nil
>   b => nil
>   c => nil
> (rdb:1) c
> Breakpoint 1, toplevel at x.rb:4
> x.rb:4:c = 'ccc'
> (rdb:1) v l
>   a => "aaa"
>   b => "bbb"
>   c => nil
> (rdb:1) n
>
> Robert@babelfish ~
> $
>
> Note: "v l" lists local variables.
>
> Kind regards
>
> robert
>
> --
> remember.guy do |as, often| as.you_can - without endhttp://blog.rubybestpractices.com/

Hi Robert,

Thanks for your reply.  It led me to realize that I had mixed up two
debuggers.  I'm using the command "rdebug x.rb" and it appears to
invoke ruby-debug.  That works great!

I wanted to elect some options for ruby-debug but could not find the
file recommended by some online documentation: rdebugrc. I hten found
another recommendation for Windows:rdebug.ini.  That doesn't exist
either.

I found an rdebug file with no extension in the directory where Ruby
is installed. It's a ~200-line Ruby program that looks like a driver
for the Debugger,  so that doesn't look like a place for me to try to
customize the options.

This is not a big deal.  But if anything comes to mind, I'd be
grateful to learn about it.

Best wishes,
Richard