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<p>ccc=0 means that a character does not reorder for the canonical
ordering part of the Unicode normalization algorithm. (See
Canonical Ordering Algorithm in Section 3.11 in the core spec.
<a class="moz-txt-link-freetext" href="https://www.unicode.org/versions/Unicode15.0.0/ch03.pdf#G49591">https://www.unicode.org/versions/Unicode15.0.0/ch03.pdf#G49591</a>)
That sense of non-reordering has nothing to do with reordering (or
non-reordering) of glyphs left and right for rendering of Indic
scripts. It sounds like folks are talking past each other on this.<br>
</p>
<p>--Ken<br>
</p>
<div class="moz-cite-prefix">On 1/22/2024 2:32 PM, Richard
Wordingham via Unicode wrote:<br>
</div>
<blockquote type="cite" cite="mid:20240122223213.32a88cdf@JRWUBU2">
<pre><blockquote type="cite" style="color: #007cff;"><pre
class="moz-quote-pre" wrap="">The canonical comb. class = 0, which means non-reordering.
</pre></blockquote><pre class="moz-quote-pre" wrap="">Most Indic VOWEL SIGNs E have ccc=0 and are left matras and are not
'logical order exceptions', so surely they are re-ordering!
</pre></pre>
</blockquote>
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