From: James Britt <james.britt@...>
Date: 2008-08-25T09:29:45+09:00
Subject: Re: gem unpack --target usage

Erik Hollensbe wrote:
> James Britt wrote:
>> Erik Hollensbe wrote:
>>> James Britt wrote:
>>>> I'm trying to unpack a gem into a particular directory, but cannot get
>>>> the --target option to work.
>>> gem unpack foo.gem -- --target foo # works here.
>> I just tried it.  It "works" by unpacking the gem into the current
>> directory, completely ignoring the --target option.
> 
> What version of rubygems do you have?


  I'm using 1.2.0, on Kubuntu, running

ruby 1.8.6 (2008-08-08 patchlevel 286) [i686-linux]


I don't have a 'foo.gem' file to try; I have RedCloth installed as a gem 
and want to unpack it to  a particular location.



I can unpack to the current directory if I omit any --target option.


So, this works:


    james@james06:~$ pwd
    /home/james
    james@james06:~$ gem unpack RedCloth
    Unpacked gem: '/home/james/RedCloth-3.0.4'
    james@james06:~$


This fails


    james@james06:~$ gem unpack RedCloth --target /tmp/RC
    ERROR:  While executing gem ... (Gem::CommandLineError)
        Too many gem names (RedCloth, /tmp/RC); please specify only one
    james@james06:~$


Using the extra '--' as in your example acts as if I pass no --target 
option:


    james@james06:~$ gem unpack RedCloth --  --target /tmp/RC
    Unpacked gem: '/home/james/RedCloth-3.0.4'


If I copy the actual gem file to my working directory:

    james@james06:~$ gem unpack RedCloth-3.0.4.gem --  --target /tmp/RC
    Unpacked gem: '/home/james/RedCloth-3.0.4'


    james@james06:~$ gem unpack RedCloth-3.0.4.gem   --target /tmp/RC
    ERROR:  While executing gem ... (Gem::CommandLineError)
      Too many gem names (RedCloth-3.0.4.gem, /tmp/RC); please specify
      only one


BTW, why do you use the extra '--' in your example? (Not that it helps 
me either way.)


-- 
James Britt

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