From: Gavin Sinclair <gsinclair@...>
Date: 2004-05-05T00:08:19+09:00
Subject: Re: Can a program be made to drop into irb?

On Wednesday, May 5, 2004, 12:03:56 AM, Ara.T.Howard wrote:

~ >> cat a.rb
> require 'irb'
> a, b = 4, 2
> begin
>   c = 42
>   syntax_error
rescue Exception =>> e
>   IRB.setup nil 
>   IRB::Irb.new(IRB::WorkSpace.new(binding),nil).eval_input
> end


~ >> ruby a.rb
irb(main):001:0>> p a,b,c
> 4
> 2
> 42
=>> nil


> i confess i have no idea how this works, but it seems to... you need to type
> ctrl-D to get out (end STDIN), i'm not sure how to get back into the program...
> perhaps someone else could figure it out...

> a shorthand for this would be immensely useful - something like

>   ret = IRB.debug


Well, that's a good start.  Getting back to the program would be
handy.

Then calling IRB.debug is like using a debugger, except the
breakpoints are in the code, which I think is a good thing to be able
to do.

Gavin