From: Eugen Ciur <ciur.eugen@...>
Date: 2011-05-02T18:40:25+09:00
Subject: Re: LoadPath and require confusion, please explain

Lucky Dev wrote in post #996171:
> But when i say require "something" , something.rb should be present in
> the loadpath for the require call to return success....
>

Nope. Look, when we require arel (for example), although it is not in
$LOAD_PATH, ruby will use paths provided by gem library (as I said in
post before) to find where is arel localted.


 $ ruby -e "puts require 'arel'"
 true


If has found 'arel' library (my load_path is almost same as your - no
arel there)

But, when we disable gems as in command below:

 $ ruby -e "puts require 'arel'" --disable-gems
 -e:1:in `require': no such file to load -- arel (LoadError)
   from -e:1:in `<main>'

Ruby fails to find arel library, because it ignores $GEM_HOME and
$GEM_PATH this time, and search only in $LOAD_PATH.

'--disable-gems' option is your answer.

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