Re: On darwin, diff <(echo ab) <(echo cd) does nothing

[Vincent Lefevre]

On 2005-08-21 20:01:48 -0700, Paul Eggert wrote:
> I think it depends on what one wants.  For example, suppose d is a
> directory and you do something like this:
> 
>    mkdir e
>    ln d/* e
>    touch e/newfile
>    diff -u d e
> 
> I would expect to see:
> 
>    Only in e: newfile
> 
> even if there is a fifo in d.  That is because I want to see the
> difference in the directory structure, and I don't want diff to read
> the fifo twice.

This is a completely different thing here. POSIX says:

  If both file1 and file2 are directories, diff will not compare block
  special files, character special files or FIFO special files to any
  files and will not compare regular files to directories.

Even if the fifo's don't have the same inode, they must not be
compared, since d and e are directories.

-- 
Vincent Lefèvre <address@hidden> - Web: <http://www.vinc17.org/>
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