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RE: Re: Keeping last-modified dates

From: Thompson, Graeme (AELE) <Graeme.Thompson_at_smiths-aerospace.com>
Date: 2006-08-30 09:59:26 CEST


> -----Original Message-----
> From: Erik Huelsmann [mailto:ehuels@gmail.com]
> Sent: 29 August 2006 18:00
> To: Mike Brenner
> Cc: Ian Brockbank; users@subversion.tigris.org
> Subject: Re: Keeping last-modified dates
>
> On 8/29/06, Mike Brenner <mikeb@mitre.org> wrote:
> > Excellent points, Ian. However, they assume that
> > you stay in the development environment past
> > the coding stage and throughout the testing and
> > deployment stage.
> >
> > My example of testing involved
> > making a cold start, i.e., recompiling
> > all the files from scratch on a clean disk,
> > in order to begin a fully configured test.
> >
> > As part of that process we check off the
> > modified date of each file, to enhance
> > the security that svn gives that it
> > designates a copy of the correct file.
> >
> > Similarly, for certain non-developmental,
> > never-changing files that get configured
> > in order to include them in the final product,
> > changing the date makes it very wierd
> > to say this file bears today's date,
> > but I promise you, no one has modified
> > it in the last 5 years.
>
> Only MD5 sums can - to some extent - tell you that. "Because it looks
> like it never changed, you must assume it never changed" is harder to
> sell to someone with *some* ICT experience than "Because it looks like
> it changed, I can assure you it didn't: here MD5 sums"...
>

I think that you may be missing the point that people are trying to
make, The no-one is using the modified date time to *guarantee* the file
has not changed, but simply to give and indication that a file has
changed and that if it has changed then roughly when did it change?

Quoting Mike:
"Similarly, for certain non-developmental, never-changing files that get
configured in order to include them in the final product, changing the
date makes it very weird to say this file bears today's date, but I
promise you, no one has modified it in the last 5 years."

This is what I see as one of the primary uses of this option to keep the
modified date-times

--Graeme.

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Received on Wed Aug 30 10:03:19 2006

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