ICU-66108.tar.gz

[apple/icu.git] / icuSources / data / brkitr / rules / char.txt

diff --git a/icuSources/data/brkitr/rules/char.txt b/icuSources/data/brkitr/rules/char.txt
index 34193cec778c27fc45d364b9cba4ddb9e261ecc9..ffa3faf451cd8a6f979dce5c27f5cd29c606746f 100644 (file)
--- a/icuSources/data/brkitr/rules/char.txt
+++ b/icuSources/data/brkitr/rules/char.txt
@@ -6,11 +6,9 @@
 #
 #   file:  char.txt
 #
-#   ICU Character Break Rules, also known as Grapheme Cluster Boundaries
-#      See Unicode Standard Annex #29.
-#      These rules are based on UAX #29 Revision 29 for Unicode Version 9.0
-#      Plus revisions to rule GB 11 from http://unicode.org/cldr/trac/ticket/10088
-#      Plus additional characters introduces with Emoji 5, http://www.unicode.org/reports/tr51/proposed.html
+#   ICU Character Break Rules
+#      These rules are based on the Extended Grapheme Cluster rules from
+#      Unicode UAX #29 Revision 34 for Unicode Version 12.0
 
 !!quoted_literals_only;
 
@@ -20,9 +18,6 @@
 $CR          = [\p{Grapheme_Cluster_Break = CR}];
 $LF          = [\p{Grapheme_Cluster_Break = LF}];
 $Control     = [[\p{Grapheme_Cluster_Break = Control}]];
-# TODO: Enable Virama & LinkingConsonant definitions once rule builder allows empty sets.
-#$Virama      = [[\p{Grapheme_Cluster_Break = Virama}]];
-#$LinkingConsonant = [[\p{Grapheme_Cluster_Break = LinkingConsonant}]];
 $Extend      = [[\p{Grapheme_Cluster_Break = Extend}]];
 $ZWJ         = [\p{Grapheme_Cluster_Break = ZWJ}];
 $Regional_Indicator = [\p{Grapheme_Cluster_Break = Regional_Indicator}];
@@ -30,6 +25,13 @@ $Prepend     = [\p{Grapheme_Cluster_Break = Prepend}];
 $SpacingMark = [\p{Grapheme_Cluster_Break = SpacingMark}];
 
 #
+#  From cldr/common/properties/segments/
+#       and issue CLDR-10994
+#
+$Virama      = [\p{Gujr}\p{sc=Telu}\p{sc=Mlym}\p{sc=Orya}\p{sc=Beng}\p{sc=Deva}&\p{Indic_Syllabic_Category=Virama}];
+$LinkingConsonant = [\p{Gujr}\p{sc=Telu}\p{sc=Mlym}\p{sc=Orya}\p{sc=Beng}\p{sc=Deva}&\p{Indic_Syllabic_Category=Consonant}];
+$ExtCccZwj   = [[\p{gcb=Extend}-\p{ccc=0}] \p{gcb=ZWJ}];
+
 # Korean Syllable Definitions
 #
 $L           = [\p{Grapheme_Cluster_Break = L}];
@@ -41,7 +43,6 @@ $LVT         = [\p{Grapheme_Cluster_Break = LVT}];
 
 # Emoji defintions
 
-# Data for Extended Pictographic (now a regular property)
 $Extended_Pict = [:ExtPict:];
 
 # The following classes are no longer needed for ICU rules but may
@@ -49,11 +50,11 @@ $Extended_Pict = [:ExtPict:];
 # The first  is still valid using the Unicode 11 properties:
 #  $EmojiNRK    = [[\p{Emoji}] - [\p{Grapheme_Cluster_Break = Regional_Indicator}*\u00230-9©®™〰〽]];
 # The other two are no longer valid because no characters have GCB=EB or GCB=EBG anymore:
-#  $E_Base      = [[\p{Grapheme_Cluster_Break = EB}] \U0001F46A-\U0001F46D\U0001F46F\U0001F91D\U0001F93C];
+#  $E_Base      = [[\p{Grapheme_Cluster_Break = EB}];
 #  $E_Base_GAZ  = [\p{Grapheme_Cluster_Break = EBG}];
 # They must be replaced with updated versions as follows
-#  $E_Base      = [[:EBase:] \U0001F46A-\U0001F46D\U0001F46F\U0001F91D\U0001F93C];
-#  $E_Base_GAZ  = [\U000026F9\U0001F466-\U0001F469]; # EBase that also occur after ZWJ in emoji-zwj-sequences
+#  $E_Base      = [:EBase:];
+#  $E_Base_GAZ  = [\U0001F466-\U0001F469\U0001F91D\U0001F9D1]; # EBase that also occur after ZWJ in emoji-zwj-sequences
 
 ## -------------------------------------------------
 !!chain;
@@ -68,13 +69,15 @@ $L ($L | $V | $LV | $LVT);
 # GB 9
 [^$Control $CR $LF] ($Extend | $ZWJ);
 
-# GB 9a (only for extended grapheme clusters)
+# GB 9a
 [^$Control $CR $LF] $SpacingMark;
 
 # GB 9b
 $Prepend [^$Control $CR $LF];
 
-# The following replaces the Unicode 10 rules GB 10 and GB 11.
+# GB 9.3, from CLDR-10994
+$LinkingConsonant $ExtCccZwj* $Virama $ExtCccZwj* $LinkingConsonant;
+
 # GB 11 Do not break within emoji modifier sequences or emoji zwj sequences.
 $Extended_Pict $Extend* $ZWJ $Extended_Pict;