From: "Berger, Daniel" <Daniel.Berger@...>
Date: 2005-09-14T04:19:28+09:00
Subject: Re: File.split edge cases

> -----Original Message-----
> From: Austin Ziegler [mailto:halostatue@gmail.com] 
> Sent: Tuesday, September 13, 2005 12:56 PM
> To: ruby-core@ruby-lang.org
> Subject: Re: File.split edge cases

<snip>

> > # pseudo-code
> > if path.root? or path.empty?
> >     return path, ""
> > else
> >     return File.dirname(path), File.basename(path)
> > end
> 
> Hmmm. I don't think that's right, still. "ls //" is valid on 
> Unix, so the existing behaviour is *correct*, if mildly 
> unnerving.

I don't know that just because "ls" handles it one can conclude that
it's correct behavior on Unix.  But, again, without a POSIX document
sitting in front of me, I'm just not sure.  My Google skills are failing
me.

> However, on Windows, "dir \\" is not correct just 
> as "dir C:\\" will not be correct. Better to specifically 
> check for the UNC-path and drive-path cases. Ruby should also 
> be smart enough to handle the \\.\ and \\?\ special prefixes. 
> I can write up a summary of what these are for and how they 
> should be handled, if that would help.

I think that would be good, along with a series of test cases that could
be incorporated as part of the Ruby distro.  I already have quite a few
for File.basename and File.dirname (as part of win32-file), though I
have to admit I didn't test with "\\.\" or "\\?\", though I do have
generic UNC path tests.

Regards,

Dan