From: Roger Pack <rogerpack2005@...>
Date: 2010-06-26T07:00:42+09:00
Subject: Re: $? is always new?

>>>> $?
>> => #<Process::Status: pid 20122 exit 0>
>>>> $?
>> => #<Process::Status: pid 20134 exit 0>
>> 
>> What are those phantom processes?
>> -r
> 
> What platform are you on? What ruby version? For me, with ruby 
> 1.8.7.249-2 standard package from Ubuntu Lucid amd64:
> 
> $ irb
> irb(main):001:0> $?
> => nil

On windows it appears to behave as expected.

On linux (Ubuntu, I believe latest revision).

All built from source:

[25:1557][rdp@ilab1:~]$ ruby -v
ruby 1.9.1p243 (2009-07-16 revision 24175) [i686-linux]
[25:1557][rdp@ilab1:~]$ export RUBYOPT=
[25:1558][rdp@ilab1:~]$ irb
irb(main):001:0> $?
=> #<Process::Status: pid 21719 exit 0>
irb(main):002:0> $?
=> #<Process::Status: pid 21731 exit 0>
irb(main):003:0> $?
=> #<Process::Status: pid 21743 exit 0>
irb(main):004:0> exit
[25:1558][rdp@ilab1:~]$ ~/installs/ruby-1.8.7-p174_installed/bin/irb
irb(main):001:0> $?
=> #<Process::Status: pid=21771,exited(0)>
irb(main):002:0> $?
=> #<Process::Status: pid=21778,exited(0)>
irb(main):003:0> $?
=> #<Process::Status: pid=21785,exited(0)>
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