Do not fall back when looking for 4.1 data or later (#1089)

* Do not fall back when looking for 4.1 data or later

* spots

Author: eggrobin

unicodetools/src/main/java/org/unicode/text/utility/Utility.java

@@ -1451,6 +1451,14 @@ public static String getMostRecentUnicodeDataFile(
             if (version != null && version.compareTo(currentVersion) < compValue) {
                 continue;
             }
+            if (version != null
+                    && version.compareTo(VersionInfo.UNICODE_4_1) >= 0
+                    && currentVersion.compareTo(version) < 0) {
+                // Do not look at earlier versions if we want Unicode 4.1 data or later.
+                // Unicode 4.0.1 is the last version for which unmodified files were not
+                // republished.
+                return null;
+            }
             // check the standard ucd directory
             if (filename.contains("/*/")) {
                 // check the idna directory

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

@@ -1311,6 +1311,10 @@ Let $japaneseSimplifiedRadicals := \p{Name=/CJK RADICAL J-SIMPLIFIED/}
 In $chineseSimplifiedRadicals, Equivalent_Unified_Ideograph ∈ [\p{kRSUnicode=/^[0-9]+'\.0$/} $radicalsWithUnifiableSimplifications]
 In $japaneseSimplifiedRadicals, Equivalent_Unified_Ideograph ∈ \p{kRSUnicode=/^[0-9]+''\.0$/}
 
+# Check that removed properties do not persist.
+\p{U16:kGB7≠@none@}=[垯屃慭梾疭瘆筼臜荙诐跶轪辌酦镈镋镕饳馉鱽鱾鲃鲉鲌鲏鲪鲬鲯鲹鲾鳂鳈鳉鳑鳚鳡鳤鸻鸼鹟鹮鹲]
+\p{kGB7≠@none@}=[]
+
 # Tangut invariants
 
 Let $tangutSourcesScope := [\p{Block=/^Tangut(.Supplement)?$/} - \p{gc=Cn}]