From: Robert Klemme <shortcutter@...>
Date: 2009-03-25T03:26:57+09:00
Subject: Re: : HOWTO start irb on a different object

On 24.03.2009 17:25, Jeremy Henty wrote:
> On 2009-03-24, Brian Candler <b.candler@pobox.com> wrote:
>> Jeremy Henty wrote:
>>> I wanted to have irb start its session on an object other than the
>>> toplevel.
>> This is what I have been using:
>> http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/244139
> 
> Yes, that's  what I  found too.  AFAICT  that solution copies  the irb
> method that  doesn't quite do what  you want and modifies  the copy so
> that it does do what you want.  I prefer my solution for being shorter
> and simpler.  OTOH my solution monkey-patches the original irb method,
> which is a point against it.
> 
>> I'm  not interested  in setting  up  a different  default object  in
>> .irbrb, but rather being able to bolt irb onto an application object
>> as an interactive CLI for testing/debugging.
> 
> That's what I  want too!  With my  solution I can put an  .irbrc in my
> application directory  that makes  irb start up  in the context  of an
> application object.  Which is useful.

But wouldn't you have to start irb then with either

HOME=. irb

or with other options in order to make it read the local .irbrc?  If you 
do that then it's not as simple as typing "irb" and in that case you can 
as well place a script in the local directory which does the proper 
init.  (Well, you could have a line like "load '.irbrc' if test ?r, 
'.irbrc'" in ~/.irbrc but that somehow feels a bit too automatic to me.)

Btw, if you can make IRB read a "local" .irbrc already, then you can as 
well place code in there like

application = whatever_initialization()
irb application
exit

At the moment I cannot see the benefit of your proposal.

Kind regards

	robert

-- 
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