On Wed, 31 May 2017 19:24:04 +0000 Shawn Steele via Unicode <unicode@unicode.org> wrote:
> It seems to me that being able to use a data stream of ambiguous > quality in another application with predictable results, then that > stream should be “repaired” prior to being handed over. Then both > endpoints would be using the same set of FFFDs, whether that was > single or multiple forms. This of course depends on where the damage is being done. You're urging that applications check the strings they have generated as they export them. Richard.