irb hoses tab completion when Wirble is used

[egypt]

msf auxiliary(browser_autopwn) > show <tab><tab>
show actions    show all        show encoders   show exploits   show options    show plugins    
show advanced   show auxiliary  show evasion    show nops       show payloads   show targets    
msf auxiliary(browser_autopwn) > irb
[*] Starting IRB shell...

>> exit
msf auxiliary(browser_autopwn) > show <tab><tab>
Display all 367 possibilities? (y or n)n
msf auxiliary(browser_autopwn) > show o<tab><tab>
object_id                   option_values_dispatch      option_values_payloads      option_values_targets       
open                        option_values_encoders      option_values_target_addrs  or                          
option_values_actions       option_values_nops          option_values_target_ports  
msf auxiliary(browser_autopwn) > 

This may be because of my ~/.irbrc which follows:

# load libraries
require 'rubygems'
require 'wirble'

# start wirble (with color)
Wirble.init
Wirble.colorize

[hdm]

This has nothing to do with Wirble and everything to do with IRB. IRB replaces the tab completion handler, which is global for the process using readline. We need to restore this after the irb command completes.

[hdm]

(In [5653]) Fixes #240. Resets tab completion after irb