From: James Byrne <byrnejb@...>
Date: 2010-09-15T00:05:09+09:00
Subject: How does one get an absolute absolute file path?

I have a situation where I call a ruby script from a directory that is a
logical link to the actual one.  So for instance the actual path is:

/home/me/projects/bin/script.rb

But the path used to call the script is

/home/me/projects/tmp/testing/bin/script.rb

where tmp/testing/bin is a logical link to projects/bin.

With Ruby-1.8.7 using a simple require in the script, like this, works
fine:

require File.dirname(__FILE__) + "../lib/library"

However, this no longer works in 1.9.2 because of the decision, asinine
in my opinion, to remove . from the default load path.  So, what I am
trying to discover is how best to provide an absolute path which gives
the same result.  The problem is that when I build such a path using
File.expand_path I end up with this:

/home/me/projects/tmp/testing/lib/library

which fails because there is no /home/me/projects/tmp/testing/lib
directory.

My question is: Is there any way to obtain the absolute path for
__FILE__ such that it returns the path to its actual location and not
one that includes any logical links?
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