<div dir="ltr"><div dir="ltr">On Fri, Dec 18, 2020 at 9:06 AM Sudarshan S Chawathe via Unicode <<a href="mailto:unicode@unicode.org">unicode@unicode.org</a>> wrote:<br></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">I would be grateful if someone could point me to a good reference for<br>
the syntax and semantics of the rules used to describe the emoji<br>
ordering at the following:<br>
<br>
  <a href="https://www.unicode.org/emoji/charts-13.1/emoji-ordering-rules.txt" rel="noreferrer" target="_blank">https://www.unicode.org/emoji/charts-13.1/emoji-ordering-rules.txt</a></blockquote><div><br></div><div>Overview: <a href="https://www.unicode.org/reports/tr51/#Sorting">https://www.unicode.org/reports/tr51/#Sorting</a></div><div><br></div><div>Collation tailoring syntax: <a href="https://www.unicode.org/reports/tr35/tr35-collation.html#Rules">https://www.unicode.org/reports/tr35/tr35-collation.html#Rules</a></div><div><br></div><div>The emoji ordering is also provided as part of CLDR: <a href="https://github.com/unicode-org/cldr/blob/master/common/collation/root.xml#L950">https://github.com/unicode-org/cldr/blob/master/common/collation/root.xml#L950</a></div><div><br></div><div>And like much of CLDR that is then available via the ICU C/C++/Java libraries, via a Collator for language tag "und-u-co-emoji".</div><div><a href="http://site.icu-project.org/">http://site.icu-project.org/</a><br></div><div><a href="https://unicode-org.github.io/icu/userguide/collation/">https://unicode-org.github.io/icu/userguide/collation/</a><br></div><div><a href="https://unicode-org.github.io/icu-docs/apidoc/released/icu4c/classicu_1_1Collator.html">https://unicode-org.github.io/icu-docs/apidoc/released/icu4c/classicu_1_1Collator.html</a><br></div><div><a href="https://unicode-org.github.io/icu-docs/apidoc/dev/icu4j/com/ibm/icu/text/Collator.html">https://unicode-org.github.io/icu-docs/apidoc/dev/icu4j/com/ibm/icu/text/Collator.html</a><br></div><div><br></div><div>Best regards,</div><div>markus</div></div></div>