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July 2007

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2007.07.01 17:12 "Re: BigTIFF extension issue", by Bob Friesenhahn
2007.07.02 09:08 "Re: BigTIFF extension issue", by Andy Cave
2007.07.02 14:22 "Re: BigTIFF extension issue", by Frank Warmerdam
2007.07.03 10:54 "Re: BigTIFF extension issue", by Joris Van Damme

2007.07.03 10:54 "Re: BigTIFF extension issue", by Joris Van Damme

Bob,

Bob Friesenhahn wrote:
> Given the state of the computing universe, does anyone care about
> three character file extensions any more?  Are there systems still in
> use (reasonably expected to encounter a BigTIFF file) which make their
> format decisions based on a three character extension, or is this
> behavior now effectively extinct?

Definetly. In the Windows GUI environment, the standard file dialog has file 
filters. This is the reason why we changed filenames like tif_config.h.vc to 
tif_config.vc.h instead: the development environment pops up the file dialog 
with filters like *.h;*.c and such active, and tif_config.h.vc is not even 
seen by the user.

To me, this is and example of legit and proper use of file extensions. It is 
unreasonably to spend a lot of processing power to magically detect file 
format of potentially thousands of files each time a folder (aka directory) 
is viewed in the file dialog and a helpful filter is active.

Another good example of systems making format decision based on a three 
character extension, is users, doing file browsing and file-level 
operations. These systems too, are guided by the extension.

In my mind BigTIFF is TIFF, and TIFF is *.tif.


Best regards,

Joris Van Damme
info@awaresystems.be
http://www.awaresystems.be/
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