Add new InSC property value Reordering_Killer and move Batak viramas to it

unicodetools/data/ucd/dev/IndicSyllabicCategory.txt

@@ -1,5 +1,5 @@
 # IndicSyllabicCategory-16.0.0.txt
-# Date: 2023-11-10, 22:06:18 GMT
+# Date: 2023-11-13, 19:36:00 GMT
 # © 2023 Unicode®, Inc.
 # Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
 # For terms of use, see https://www.unicode.org/terms_of_use.html
@@ -262,14 +262,15 @@ A9B3          ; Nukta # Mn       JAVANESE SIGN CECAK TELU
 
 # Indic_Syllabic_Category=Virama
 
-# Virama (killing of inherent vowel in consonant sequence
-#         or consonant stacker)
+# Virama (kills inherent vowel of consonant; may act as a Pure_Killer
+#         or Invisible_Stacker depending on context)
 # Only includes characters that can act both as visible killer viramas
 # and consonant stackers. Separate property values exist for characters
-# that can only act as pure killers or only as consonant stackers.
+# that can only act as pure killers, only as reordering killers, or only
+# as consonant stackers.
 
 # [Derivation: (ccc=9) - (InSC=Pure_Killer) - (InSC=Invisible_Stacker)
-#  - (InSC=Number_Joiner) - 2D7F]
+#  - (InSC=Reordering_Killer) - (InSC=Number_Joiner) - 2D7F]
 
 094D          ; Virama # Mn       DEVANAGARI SIGN VIRAMA
 09CD          ; Virama # Mn       BENGALI SIGN VIRAMA
@@ -303,8 +304,9 @@ A9C0          ; Virama # Mc       JAVANESE PANGKON
 
 # Indic_Syllabic_Category=Pure_Killer
 
-# Pure killer (killing of inherent vowel in consonant sequence,
-#              with no consonant stacking behavior)
+# Pure killer (kills inherent vowel of consonant; always visible;
+#              has no conjuct formation, consonant stacking, or reordering
+#              behavior)
 
 # [Not derivable]
 
@@ -320,7 +322,6 @@ A9C0          ; Virama # Mc       JAVANESE PANGKON
 17D1          ; Pure_Killer # Mn       KHMER SIGN VIRIAM
 1A7A          ; Pure_Killer # Mn       TAI THAM SIGN RA HAAM
 1BAA          ; Pure_Killer # Mc       SUNDANESE SIGN PAMAAEH
-1BF2..1BF3    ; Pure_Killer # Mc   [2] BATAK PANGOLAT..BATAK PANONGONAN
 A82C          ; Pure_Killer # Mn       SYLOTI NAGRI SIGN ALTERNATE HASANTA
 A953          ; Pure_Killer # Mc       REJANG VIRAMA
 ABED          ; Pure_Killer # Mn       MEETEI MAYEK APUN IYEK
@@ -339,9 +340,22 @@ ABED          ; Pure_Killer # Mn       MEETEI MAYEK APUN IYEK
 
 # ================================================
 
+# Indic_Syllabic_Category=Reordering_Killer
+
+# Reordering killer (kills inherent vowel of consonant; always visible;
+#                    may cause consonant reordering)
+
+# [Not derivable]
+
+1BF2..1BF3    ; Reordering_Killer # Mc   [2] BATAK PANGOLAT..BATAK PANONGONAN
+
+# ================================================
+
 # Indic_Syllabic_Category=Invisible_Stacker
 
-# Invisible stacker (invisible consonant stacker virama).
+# Invisible stacker (usually kills inherent vowel of consonant; is not visible
+#                    by itself; causes conjunct formation or consonant
+#                    stacking)
 #
 # Note that in some scripts, such as Kharoshthi and Masaram Gondi, an invisible
 # stacker may have a second function, changing the shape and/or location of the

unicodetools/data/ucd/dev/PropertyValueAliases.txt

@@ -919,6 +919,7 @@ InSC; Number_Joiner                   ; Number_Joiner
 InSC; Other                           ; Other
 InSC; Pure_Killer                     ; Pure_Killer
 InSC; Register_Shifter                ; Register_Shifter
+InSC; Reordering_Killer               ; Reordering_Killer
 InSC; Syllable_Modifier               ; Syllable_Modifier
 InSC; Tone_Letter                     ; Tone_Letter
 InSC; Tone_Mark                       ; Tone_Mark

unicodetools/src/main/java/org/unicode/props/UcdPropertyValues.java

@@ -1096,6 +1096,7 @@ public enum Indic_Syllabic_Category_Values implements Named {
         Other("Other"),
         Pure_Killer("Pure_Killer"),
         Register_Shifter("Register_Shifter"),
+        Reordering_Killer("Reordering_Killer"),
         Syllable_Modifier("Syllable_Modifier"),
         Tone_Letter("Tone_Letter"),
         Tone_Mark("Tone_Mark"),

unicodetools/src/main/resources/org/unicode/text/UCD/MakeUnicodeFiles.txt

@@ -1119,21 +1119,30 @@ Value: Nukta
 
 # [Not derivable]
 Value: Virama
-# Virama (killing of inherent vowel in consonant sequence
-#         or consonant stacker)
+# Virama (kills inherent vowel of consonant; may act as a Pure_Killer
+#         or Invisible_Stacker depending on context)
 # Only includes characters that can act both as visible killer viramas
 # and consonant stackers. Separate property values exist for characters
-# that can only act as pure killers or only as consonant stackers.
+# that can only act as pure killers, only as reordering killers, or only
+# as consonant stackers.
 
 # [Derivation: (ccc=9) - (InSC=Pure_Killer) - (InSC=Invisible_Stacker)
-#  - (InSC=Number_Joiner) - 2D7F]
+#  - (InSC=Reordering_Killer) - (InSC=Number_Joiner) - 2D7F]
 Value: Pure_Killer
-# Pure killer (killing of inherent vowel in consonant sequence,
-#              with no consonant stacking behavior)
+# Pure killer (kills inherent vowel of consonant; always visible;
+#              has no conjuct formation, consonant stacking, or reordering
+#              behavior)
+
+# [Not derivable]
+Value: Reordering_Killer
+# Reordering killer (kills inherent vowel of consonant; always visible;
+#                    may cause consonant reordering)
 
 # [Not derivable]
 Value: Invisible_Stacker
-# Invisible stacker (invisible consonant stacker virama).
+# Invisible stacker (usually kills inherent vowel of consonant; is not visible
+#                    by itself; causes conjunct formation or consonant
+#                    stacking)
 #
 # Note that in some scripts, such as Kharoshthi and Masaram Gondi, an invisible
 # stacker may have a second function, changing the shape and/or location of the

unicodetools/src/main/resources/org/unicode/text/UCD/UnicodeInvariantTest.txt

@@ -571,8 +571,9 @@ Let $OPInclusions = [\u00A1\u00BF\u2E18\U00013258-\U0001325A\U00013286\U00013288
 [\p{LB=CL}\p{LB=CP}] ⊃ [\p{GC=Pe} - [\u2309\u230B]]
 
 # See L2/22-086 for an explanation of the special case of Batak.
+# (Note that Consensus 177-C43 changed the Batak viramas from InSC=Pure_Killer to Reordering_Killer.)
 \p{LB=VI} = [[\p{Indic_Syllabic_Category=Virama}\p{Indic_Syllabic_Category=Invisible_Stacker}] & $BrahmicLineBreaking]
-\p{LB=VF} = [\p{Indic_Syllabic_Category=Pure_Killer} & $VFScripts]
+\p{LB=VF} = [\p{Indic_Syllabic_Category=Reordering_Killer} & $VFScripts]
 
 # 15.1: Action item UTC-176-A81: change [[:PCM:]-\u070F] lb=AL->NU
 \p{LB=CM} = [[\u3035] \p{GC=Mn} \p{GC=Me} \p{GC=Mc} \p{GC=Cc} \p{GC=Cf} -[\U00013437\U00013438\U0001343C-\U0001343F] -\p{LB=SA} -\p{LB=WJ} -\p{LB=ZW} -\p{LB=BA} -\p{LB=LF} -\p{LB=BK} -\p{LB=CR} -\p{LB=NL} -\p{LB=GL} -\p{LB=AL} -\p{LB=ZWJ} - \p{LB=VI} - \p{LB=VF} - \p{LB=NU}]
@@ -906,4 +907,4 @@ Let $ideohack = [〆 〇 〡-〩]
 [\P{InPC=NA}&\p{gc=Mc}] ⊆ \p{InPC=/(Left|Right)/}
 [\P{InPC=NA}&\P{InPC=/(Left|Right)/}] ⊆ [\p{gc=Mn}\p{gc=Lo}]
 \p{gc=Mn} ⊆ \P{InPC=/(Left|Right)/}
-[\p{gc=Lo}&\P{InPC=NA}&\P{InPC=/(Left|Right)/}] ⊆ [\p{InSC=Consonant_Preceding_Repha}\p{InSC=Consonant_Prefixed}]
+[\p{gc=Lo}&\P{InPC=NA}&\P{InPC=/(Left|Right)/}] ⊆ [\p{InSC=Consonant_Preceding_Repha}\p{InSC=Consonant_Prefixed}]