[ruby-core:26220] Re: Config.datadir in 1.9.1

Hi,

2009/10/21 Nikolai Weibull <[e-mail]>:
> In 1.8.6., Config.datadir('package') would give you the gem-relative
> data directory for a gem. 潛n 1.9.1, Config doesn稚 seem to even be
> loaded at startup. 澹hat happened? 澹hat am I supposed to use instead?
> 潸ven if you get Config loaded it still won稚 work, as the gem痴 paths
> are already added to $LOAD_PATH, so Rubygems won稚 load the
> specification and thus Gem.datadir('package') will give a nil result.

First, ::Config is deprecated. You should use RbConfig instead.
::Config is an alias of RbConfig for compatibility to < 1.8.

Second, RbConfig is a bundled library but not a core library. So it is
not loaded by default.
I think it has been loaded by RubyGems when you use RubyGems.

Third, RbConfig.datadir(pkg) is a part of RubyGems but not a part of RbConfig.

So you should write like this:

 require 'rbconfig'
 require 'rbconfig/datadir'

 RbConfig.datadir("blahblahblah")

This works fine for both 1.8 and 1.9.

Thanks,
-- Yuki Sonoda (Yugui)