Re: Potential Bug: Changed files not being marked

David Haynes wrote:
> This may not be a fault in Tortoise after all.
> When I edit the file and re-save it, the modify time is not changed.
> I assume that Tortoise is using the modify time for marking.
>
> Curiouser and curiouser.
> The modify time is not being changed when I edit with wordpad or Zend
> but *is* being changed when I edit with notepad and Tortoise is changing
> the icon as I would expect.
>
> Looks like this may be some sort of XP bug.

I don't think it's an XP bug. Some applications really don't change the
'last write time' of a file (ok, they change it back the way it was before).
Subversion first compares the 'last-write-time's of files, if they don't
match, it checks the file size. If those match, it starts doing a
byte-by-byte comparison of the file with its BASE.
So, as long as the last-write-time doesn't change, Subversion assumes
the file hasn't changed at all and doesn't check further.

One thing that could prevent updating the 'last-write-time' of a file
are shared network resources, i.e. if your working copy is not local on
your harddrive but on a mounted network share. Then, to reduce the
network load, the last-write-time is not updated immediately but only in
bigger time chunks (e.g. every 30/60 minutes).

Stefan

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