JRuby expand_path under windows appends drive letter to current directory
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                 Key: JRUBY-2227
                 URL: http://jira.codehaus.org/browse/JRUBY-2227
             Project: JRuby
          Issue Type: Bug
    Affects Versions: JRuby 1.1RC2
         Environment: Windows XP
            Reporter: Landon Cox
            Assignee: Thomas E Enebo


Some paths that are valid and legitimate pathnames in windows such as "C:" will 
not work in JRuby when using File.expand_path.


Pure Ruby behavior in trying to expand "C:"

C:\test>irb
irb(main):001:0> File.expand_path("C:")
=> "C:/test"
irb(main):002:0> quit

Gives the current working directory as the expansion path which is consistent 
with the behavior of a windows command prompt, but it is inconsistent with what 
Windows Explorer does when typing in "C:" to the address bar.....nonetheless, 
JRuby breaks the path entirely using the same example with jirb:

C:\test>\jruby-1.1RC2\bin\jirb
irb(main):001:0> File.expand_path("C:")
=> "C:/test/C:"
irb(main):002:0> quit

Notice that it appended the C: drive letter to the end of the expanded_path 
which is the current working directory.

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