From: Alpha Blue <jdezenzio@...>
Date: 2010-01-31T13:06:04+09:00
Subject: Re: Refining the use of file joins or file expand_path

pharrington wrote:
> 
> It'll at least work on Windows, Linux, and OSX. For what OSs will
> forward slashes in the path not work?

Tops-20
OpenVMS
Classic MAC OS
RISC OS
Symbian OS
Stratus VOS
etc.

Also, if you accidentally nest a require, say for example:

--root\
-- app.rb
----\lib
---- main.rb
---- modules.rb

.. note that modules.rb and main.rb are within the same directory 
(main).

If your app.rb has require 'lib/main'
.. and
If your main.rb has require 'modules'

...


(in E:/Gui-Development/GuiTemplate)
ruby app.rb
E:/Gui-Development/GuiTemplate/lib/main.rb:2:in `require': no such file 
to load
-- modules (LoadError)
        from E:/Gui-Development/GuiTemplate/lib/main.rb:2:in `<top 
(required)>'
        from app.rb:8:in `require'
        from app.rb:8:in `<main>'
rake aborted!
Command failed with status (1): [ruby app.rb...]

(See full trace by running task with --trace)

.. now take the same require 'modules' out and place:

require File.join(File.dirname(__FILE__),"modules")

.. and no errors.

main.rb and modules.rb are relative to each other.  But, if you start an 
application from a different directory, the require has to have a 
defined path.

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