I agree that NKFC doesn't do a very good job with the compatibility Jamo. My recommendation would be to exclude them from valid input and output, since they are not required for Korean identifiers.<br><br>Mark<br><br><div>
<span class="gmail_quote">On 1/11/07, <b class="gmail_sendername">Kent Karlsson</b> <<a href="mailto:kent.karlsson14@comhem.se">kent.karlsson14@comhem.se</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>Michel Suignard wrote:<br>> You could possibly argue for having them as input, but<br>> because they get<br>> normalized into Hangul syllables by NFKC (except for rare old hangul<br>> syllables which can only be represented by Jamo or a mix of jamo and
<br>> modern hangul syllables), I don't see the point in allowing them in<br>> labels. They all get filtered out by NFKC (with the notable<br><br>1) This thread has been a bit confusing in that the term "jamo" has been
<br>used for what Unicode calls "Hangul compatibility letter", not just the<br>conjoining Hangul jamo. NFKC does *not* "filter away" *any* conjoining<br>jamo (it does join some of them to precomposed Hangul syllables though,
<br>but in a correct implementation of Hangul, that does not change the<br>display of the string at all).<br><br>2) NFKC, while quite ok in the IDN context otherwise, does a really bad<br>job for the Hangul compatibility letters (see the paper I wrote on the
<br>subject, that I've referenced before).<br><br>3) In most contexts (IMO including IDN) Hangul compatibility letters<br>are best seen as equivalent to (partial) Hangul syllables constructed<br>from conjoining Jamo, including the conjoining jamo fillers.
E.g.<br>U+3131 -> <U+1100, U+1160> (in a correct implementation of<br>Hangul, including the conjoining Jamo, these two representations<br>display identically). Ideally, those should have been the Unicode<br>decomposition mappings for the Hangul compatibility letters.
<br><br> /kent k<br><br>_______________________________________________<br>Idna-update mailing list<br><a href="mailto:Idna-update@alvestrand.no">Idna-update@alvestrand.no</a><br><a href="http://www.alvestrand.no/mailman/listinfo/idna-update">
http://www.alvestrand.no/mailman/listinfo/idna-update</a><br></blockquote></div><br><br clear="all"><br>-- <br>Mark