From: Wejn <lists+rubytalk@...>
Date: 2003-11-17T23:06:55+09:00
Subject: Re: Fileutils.cp bug?

Hi,

On Mon, 17 Nov 2003, Chad Fowler wrote:

> I'm experiencing the following behavior in the latest CVS copy of ruby on 
> both Windows and Linux.  I think it's a bug.
> 
> [chad@ns1 chad]$ cat test
> Goodbye Cruel World!
> [chad@ns1 chad]$ ruby -rfileutils -e 'FileUtils.cp("test", "test")'
> 
> [chad@ns1 chad]$ cat test
> [chad@ns1 chad]$ ls -l test
> -rw-rw-r--    1 chad     chad            0 Nov 17 08:35 test
> [chad@ns1 chad]$
> 
> 
> I would suggest the following small change.
> 
> Do others agree that this is a bug?

Well, I do think it's a bug ... but the patch is not enough, imho:

(5/wejn/ns) x$ echo "goodbye" > src
(5/wejn/ns) x$ ruby18 -rfileutils -e 'FileUtils.cp("src", "src")'
/usr/local/ruby-1.8.0/lib/ruby/1.8/fileutils.rb:315:in `cp': `src' and `src' are the same file (ArgumentError)
        from /usr/local/ruby-1.8.0/lib/ruby/1.8/fileutils.rb:314:in `fu_each_src_dest'
        from /usr/local/ruby-1.8.0/lib/ruby/1.8/fileutils.rb:314:in `cp'
        from -e:1

... ok ... but:

(5/wejn/ns) x$ ruby18 -rfileutils -e 'FileUtils.cp("src", "./src")'
(5/wejn/ns) x$ ls -l src
-rw-r--r--   1 wejn     wejn            0 Nov 17 15:04 src

... problem :-(

What about comparation of [dev,inode] ?

Sincerely,
                    Michal
-- 
# Michal Safranek, email:
a=(("a".."z").to_a+["@","."]);p(("%b"%[0x645bbb83a6a496]
).scan(/...../).map{|x|a[Integer("0b"+x)]}.join.reverse)