Proposed new Firefox IDN display algorithm

Abdulrahman I. ALGhadir aghadir at
Tue Jan 24 05:37:06 CET 2012

You have mentioned in your wiki page:
"We also have a character blacklist - characters we will never display under any circumstances. This includes those which could be used to spoof the separators "/" and ".", and invisible characters. (XXX Do we need to update this to remove some of those, like ZWJ/ZWNJ?)"

Does this list published publicly? What are the factors that decide whenever the character is a spoof or not?

-----Original Message-----
From: idna-update-bounces at [mailto:idna-update-bounces at] On Behalf Of Gervase Markham
Sent: 20/Jan/2012 9:38 PM
To: idna-update at
Subject: Proposed new Firefox IDN display algorithm

Thanks to all on this list who provided input; I have taken several of your suggestions into this proposal for a change to the way Firefox chooses how to display IDNs:

Comments, particularly on the "Possible Issues and Open Questions", would be very welcome.

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