From 2f47ca70ec877972d20455aae0e36ad38889a31d Mon Sep 17 00:00:00 2001
From: Robin Leroy <egg.robin.leroy@gmail.com>
Date: Wed, 5 Jun 2024 04:49:08 +0200
Subject: [PATCH] A more robust invariant too

---
 .../resources/org/unicode/text/UCD/UnicodeInvariantTest.txt    | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/unicodetools/src/main/resources/org/unicode/text/UCD/UnicodeInvariantTest.txt b/unicodetools/src/main/resources/org/unicode/text/UCD/UnicodeInvariantTest.txt
index f245d35ca..8ddb4163e 100644
--- a/unicodetools/src/main/resources/org/unicode/text/UCD/UnicodeInvariantTest.txt
+++ b/unicodetools/src/main/resources/org/unicode/text/UCD/UnicodeInvariantTest.txt
@@ -868,6 +868,9 @@ Let $TwoVietnameseReadingMarks = [\p{U15.1.0:ccc=6}]
 # and ICU-TC should be notified.
 # See https://github.com/unicode-org/icu/pull/3026.
 \p{HST=V} = \p{GCB=V} & [\u0000-\uFFFF]
+# A more principled (if less practically useful) statement is that the
+# dual-conjoining Hangul characters are exactly the Hangul vowels.
+\p{HST=V} = \p{GCB=V} & \p{Script=Hangul}
 
 ##########################
 # Emoji