Hello,
The property Uppercase is a binary, informative property derived from General_Category (gc=Lu) and Other_Uppercase (OUpper=Y), as documented in Section 5.3 of UAX #44, at http://www.unicode.org/reports/tr44/#Uppercase. All of the characters you enumerated are titlecase letters (gc=Lt) rather than uppercase letters (gc=Lu), and they are not specifically assigned Other_Uppercase (which would otherwise contradict their General_Category). Following the derivation, they do not have the Uppercase binary property. For a visualization of the set of characters assigned the binary property Uppercase in relation to the set of Uppercase_Letter characters (gc=Lu), you can use the UnicodeSet comparison tool at http://www.unicode.org/cldr/utility/unicodeset.jsp. Enter “[:gc=Lu:]” in one input field and “[:Uppercase:]” in the other field, then click on Compare. Regards, L. -----Original Message----- From: Unicode [mailto:[email protected]] On Behalf Of Mike FABIAN Sent: Thursday, November 6, 2014 12:32 AM To: [email protected] Subject: Question about "Uppercase" in DerivedCoreProperties.txt I have a question about “Uppercase” in DerivedCoreProperties.txt: U+1F80 ᾀ GREEK SMALL LETTER ALPHA WITH PSILI AND YPOGEGRAMMENI is listed as “Lowercase” in http://www.unicode.org/Public/7.0.0/ucd/DerivedCoreProperties.txt : 1F80..1F87 ; Lowercase # L& [8] GREEK SMALL LETTER ALPHA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER ALPHA WITH DASIA AND PERISPOMENI AND YPOGEGRAMMENI But “U+1F88 ᾈ GREEK CAPITAL LETTER ALPHA WITH PSILI AND PROSGEGRAMMENI” is *not* listed as “Uppercase” in http://www.unicode.org/Public/7.0.0/ucd/DerivedCoreProperties.txt . Although U+1F80 seems to be Uppercase according to http://www.unicode.org/Public/7.0.0/ucd/UnicodeData.txt because it has a tolower mapping to U+1F80: 1F80;GREEK SMALL LETTER ALPHA WITH PSILI AND YPOGEGRAMMENI;Ll;0;L;1F00 0345;;;;N;;;1F88;;1F88 1F88;GREEK CAPITAL LETTER ALPHA WITH PSILI AND PROSGEGRAMMENI;Lt;0;L;1F08 0345;;;;N;;;;1F80; Is the information in DerivedCoreProperties.txt correct or could this be a bug in DerivedCoreProperties.txt? The above is not only the case for U+1F88, but for several more characters. All the characters listed below have a tolower mapping in http://www.unicode.org/Public/7.0.0/ucd/UnicodeData.txt but are not listed in DerivedCoreProperties.txt as “Uppercase”: U+1F88 ᾈ has a tolower mapping to U+1F80 ᾀ U+1F89 ᾉ has a tolower mapping to U+1F81 ᾁ U+1F8A ᾊ has a tolower mapping to U+1F82 ᾂ U+1F8B ᾋ has a tolower mapping to U+1F83 ᾃ U+1F8C ᾌ has a tolower mapping to U+1F84 ᾄ U+1F8D ᾍ has a tolower mapping to U+1F85 ᾅ U+1F8E ᾎ has a tolower mapping to U+1F86 ᾆ U+1F8F ᾏ has a tolower mapping to U+1F87 ᾇ U+1F98 ᾘ has a tolower mapping to U+1F90 ᾐ U+1F99 ᾙ has a tolower mapping to U+1F91 ᾑ U+1F9A ᾚ has a tolower mapping to U+1F92 ᾒ U+1F9B ᾛ has a tolower mapping to U+1F93 ᾓ U+1F9C ᾜ has a tolower mapping to U+1F94 ᾔ U+1F9D ᾝ has a tolower mapping to U+1F95 ᾕ U+1F9E ᾞ has a tolower mapping to U+1F96 ᾖ U+1F9F ᾟ has a tolower mapping to U+1F97 ᾗ U+1FA8 ᾨ has a tolower mapping to U+1FA0 ᾠ U+1FA9 ᾩ has a tolower mapping to U+1FA1 ᾡ U+1FAA ᾪ has a tolower mapping to U+1FA2 ᾢ U+1FAB ᾫ has a tolower mapping to U+1FA3 ᾣ U+1FAC ᾬ has a tolower mapping to U+1FA4 ᾤ U+1FAD ᾭ has a tolower mapping to U+1FA5 ᾥ U+1FAE ᾮ has a tolower mapping to U+1FA6 ᾦ U+1FAF ᾯ has a tolower mapping to U+1FA7 ᾧ U+1FBC ᾼ has a tolower mapping to U+1FB3 ᾳ U+1FCC ῌ has a tolower mapping to U+1FC3 ῃ U+1FFC ῼ has a tolower mapping to U+1FF3 ῳ Is that correct or a bug? -- Mike FABIAN <[email protected]<mailto:[email protected]>> ☏ Office: +49-69-365051027, internal 8875027 睡眠不足はいい仕事の敵だ。 _______________________________________________ Unicode mailing list [email protected]<mailto:[email protected]> http://unicode.org/mailman/listinfo/unicode
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