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

2018.11.05 15:38 "Re: [Tiff] Libtiff will be released soon", by Kemp Watson

Let's hope that Leonard can help poke the right person at Adobe - it's unfortunate that they are a pretty opaque company. But yes, even a small block of unassigned numbers would provide some breathing room, both for TIFF tags, and compression numbers. Personally, I'm in need of a private IFD number, too, and I'm at a loss.

Kemp

On 2018-11-05, 10:28 AM, "Bob Friesenhahn" <bfriesen@simple.dallas.tx.us> wrote:

Unfortunately, TIFF is generally not at the top of my "hot mess" list...

Re "Private TIFF tags have no business in libtiff header files since libtiff does not use them. Libtiff can offer to store such information in a file in its source repository, suitably vetted to any trade secret issues.": if this is the case, may I submit a change request to have lines 376 through 619 of tiff.h removed, including your recent additions of ZSTD and WebP.

It looks like some/many of these tags are indeed used within libtiff library code but I get your point.

Adobe could help a lot by providing us with two safe numbers to use for Zstd and WebP compression so we can get a release out without endangering existing assignments. It should not be necessary to resurrect the web interface which was taken down in order to accomplish this.