Hello Mark, In your document (https://docs.google.com/document/d/ 1pC7N32TnmDr2xzFW4HscA1DyAPPZnwILUH2_03UL6Jo/preview), The last code segment has bugs:
*ULocale danishLocale = ULocale.forLanguageTag("da");Collator danishAndEmoji = new RuleBasedCollator( ((RuleBasedCollator) Collator.getInstance(locale1)).getRules() + ((RuleBasedCollator) Collator.getInstance(locale2)).getRules());*where locale1 and locale2 are undefined. I suppose they are danishLocale, defined here, and emojiLocale defined previously as: *ULocale emojiLocale = ULocale.forLanguageTag("und-u-co-emoji");*But I'm not sure of their order (which one of the two defined (named) locales is locale1 or locale2. Philippe. 2018-07-13 20:33 GMT+02:00 Mark Davis ☕️ via Unicode <unicode@unicode.org>: > Put together a doc about this; suggestions for improvement are welcome. > > https://docs.google.com/document/d/1pC7N32TnmDr2xzFW4HscA1DyAPPZn > wILUH2_03UL6Jo/preview > > Mark >