There is no consistent policy of that sort, as evidenced by the data.<br><ul><li>There are many* characters in PVALID that are not particularly useful, and may be harmful*.</li><li>There are many* characters in DISALLOWED that may be useful, and are not particularly harmful*.</li>
</ul>What we have is a rough compromise that tries to get a large majority of the most useful characters into PVALID and some of the harmful characters into DISALLOWED, using Unicode properties and exceptions to make the cut so that we don't have to examine and assess all of the characters individually.<br>
<br>CONTEXT* characters are a bit different, since they are assessed individually. The particularly harmful characters should be in CONTEXT*, with constraints on their usage. What we actually have in CONTEXT* is very hit-and-miss. This particular character causes no more harm than a vast array of other PVALID characters, and should just be PVALID.<br>
<br>Mark<br>
<br><br><div class="gmail_quote">On Wed, Jul 15, 2009 at 05:55, Andrew Sullivan <span dir="ltr"><<a href="mailto:ajs@shinkuro.com">ajs@shinkuro.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="im">On Wed, Jul 15, 2009 at 02:43:23PM +0200, Patrik Fältström wrote:<br>
<br>
>> writing. So it is rarely used in electrical writing for<br>
>> communication.<br>
>> Thus, VERTICAL IDEOGRAPHIC ITERATION MARK should be DISALLOWED.<br>
><br>
> Can I get a consensus on whether this should continue to be CONTEXTO or<br>
> DISALLOWED?<br>
><br>
> It is today CONTEXTO.<br>
<br>
</div>I thought our general principle had been, "Not DISALLOWED unless<br>
harmful." This argument seems to be "DISALLOWED because not useful."<br>
Therefore, CONTEXTO is correct, I'd say.<br>
<br>
Sane registry policy everywhere will still probably set this to<br>
registry-disallowed.<br>
<br>
A<br>
<font color="#888888">--<br>
Andrew Sullivan<br>
<a href="mailto:ajs@shinkuro.com">ajs@shinkuro.com</a><br>
Shinkuro, Inc.<br>
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