Re: Regulating PUA.

From: Philippe Verdy (
Date: Wed Jan 24 2007 - 05:16:36 CST

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    From: +ACI-Richard Wordingham+ACI-
    +AD4- Philippe Verdy wrote on Monday, January 22, 2007 9:14 AM
    +AD4APg- I consider this +ACI-PUA leakage bug+ACI- as a serious security issue, much more
    +AD4APg- serious than a interoperability problem (which it is not). To close this
    +AD4APg- bug, a protocol should be created to allow transmitting those private
    +AD4APg- convention agreements, in addition to the character encoding information.
    +AD4- Isn't there already an existing protocol? It's something like, 'To read
    +AD4- this page properly, you need to install xxx font, which may be downloaded
    +AD4- from yyy.' It's used for hack fonts based on encoded scripts. Why allow
    +AD4- these and ban material using the PUA?

    Can you instruct a browser to read and interpret such statement, written in a language that you even don't know yourself, and then render consistantly that document in the intended target script?
    And you are just focusing there on interactive browers. You are forgetting the need for automated non-interactive text processing.

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