From: RichardOnRails <RichardDummyMailbox58407@...>
Date: 2010-06-05T11:10:06+09:00
Subject: Re: Ruby breakpoint has weird idea of what local_variables are?

On Jun 4, 9:53 pm, RichardOnRails
<RichardDummyMailbox58...@USComputerGurus.com> wrote:
> 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

Hi Robert,

Please forgot about my last question.  I found comprehensive
documentation at http://bashdb.sourceforge.net/ruby-debug,  do I'll be
fine.

Thanks again,
Richard