Vim detects a file on a VMS Samba share has changed when it has not

[BG - Ben Armstrong]

On Thu, 2005-03-31 at 21:54 -0500, John E. Malmberg wrote:
> On UNIX, the file modification date is only changed if the actual file 
> was changed.
> 
> On OpenVMS, the file modification date is updated because the file was 
> opened for write.

That's interesting.  I had previously thought dates weren't modified
when I edited the file.  However, I now see that Revised date is
changed, as you have indicated.

When I create a test file that I own, before editing it with Vim I see
these dates on VMS:

        Created:     1-APR-2005 10:29:24.48
        Revised:     1-APR-2005 10:29:25.41 (1)
        
During the Vim editing session (but before writing the file) I see this:

        Created:     1-APR-2005 10:29:24.00
        Revised:     1-APR-2005 10:29:24.00 (5)
        
However, the error is not triggered.  In fact, when *I* own the file,
the error is never is triggered.

Taking a file owned by someone else, I see these dates before editing:

        Created:     9-AUG-2004 10:01:22.00
        Revised:    29-MAR-2005 10:16:11.57 (38)
        
Immediately after editing, it looks like this:

        Created:     9-AUG-2004 10:01:22.00
        Revised:     1-APR-2005 10:34:16.82 (42)
        
Then when I finally see the warning displayed, it looks like this:

        Created:     9-AUG-2004 10:01:22.00
        Revised:     1-APR-2005 10:35:57.40 (50)
        
Again, this is without actually writing anything to the file.  So yes,
the Revised date is constantly updated by Vim (actualy Vim + Cream which
turns on a bunch of features, including this business about constantly
checking the original file for changes).

But please explain, then, if it is a Revised date artefact, why I am
only seeing the problem when the owner of the original file is not me.
Does that make sense?

Ben