2018.11.04 20:20 "[Tiff] Libtiff will be released soon", by Bob Friesenhahn

2018.11.09 20:53 "Re: [Tiff] Libtiff will be released soon", by Roger Leigh

On 09/11/2018 18:49, Edward Lam wrote:

Regardless, we need to get another libtiff release out.

I'm not disagreeing. But we should at least do use something else as Kemp noted?

On 11/4/2018 3:49 PM, Kemp Watson wrote:

So maybe we should at least try something like 34937 - 34938?

If Adobe aren't able to do anything, we could take a leaf out of the OpenZFS developers' book. When new features are added to the ZFS filesystem, the pool version is incremented. They needed to be able to update the ZFS pool version without the version numbers clashing with the versioning and features used in Solaris. They bumped the version from 28 to 5000 to avoid the possibility of clashes.

We could potentially do the same. Assuming the tags are allocated in a linear order, if we jumped all the way to e.g. 50000 we would avoid clashes with Adobe tag registration for some time to come. Or if Adobe could grant us a chunk of e.g. 1000 tags, we could manage their usage and standardisation ourselves.

Given the danger of interoperability problems with nonstandard tags, it should I think be a prerequisite to have this sorted out before making a new release. If people start to use e.g. zstd and then we have to change the tag numbers, that would be quite unfortunate.

Regards,

Roger