Re: [Gimp-user] opening 2.9.3 file in 2.8.14 (NOT)

[Ofnuts <ofnuts gmx com>]

On 05/12/15 15:58, Alexandre Prokoudine wrote:
> On Sat, Dec 5, 2015 at 5:06 PM, Ofnuts wrote:
>
> > > No, this will not always happen, just when you use features that are 
> > > not
> > > available in the older gimp version - e.g. high precision pixel 
> > > formats.
> > Wouldn't it be useful to have a different file extension for the new
> > high-precision contents?
> What's the benefit?

Not endlessly explaining to users that there are two different types of 
XCF. I hate to say this, but Microsoft did it right with the new 
docx/xlsxl extensions. Granted, upgrading Gimp to the latest version 
won't be  a rip-off so we can expect most people to upgrade quickly, but 
the transition period can lead to some severely confused people. And 
there may be tools around (Image viewers for instance) that accept "XCF" 
but will only support the <=2.8 format for a while.

> Should file extension be changed every time some
> major change happpens? How many different file extensions for GIMP
> would you be comfortable with?

One per incompatible change (ie, version N cannot load version N+1).