Adopting ZWJ

Mark Davis ☕️ mark at
Wed Jun 8 03:03:47 CDT 2016

We wanted to be a bit conservative regarding those characters, partly
because we are using a payment service that is fussy. We could test it out
again — but our first priority is getting U9.0 out the door!


On Tue, Jun 7, 2016 at 10:52 PM, Karl Williamson <public at>

> On 06/07/2016 02:48 PM, Karl Williamson wrote:
>> I heard that someone was considering adopting ZWJ.  They seemed to think
>> that non-printables are not adoptable.  But I was unable to find a clear
>> list of criteria.  The page that allows one to adopt said that it wasn't
>> available, but that page really doesn't make it clear how one can test
>> for this without actually doing the adoption.  (Since it doesn't
>> actually ask for your credit card number on the initial page, one can
>> back out before the final commitment, but that's not a very friendly
>> interface)
> After I wrote that, I found this that I previously overlooked
> "You can’t sponsor candidate characters (those not yet released in a
> version of Unicode, such as the Emoji Candidates), nor certain characters
> such as invisible ones."
> But why this rule.  Why should someone be forbidden to adopt ZWJ?
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