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-rw-r--r--tests/utf.test4
1 files changed, 3 insertions, 1 deletions
diff --git a/tests/utf.test b/tests/utf.test
index f604c25..7c4831b 100644
--- a/tests/utf.test
+++ b/tests/utf.test
@@ -1049,7 +1049,9 @@ test utf-11.6 {Tcl_UtfToUpper beyond U+FFFF} {Uesc fullutf} {
test utf-11.7 {Tcl_UtfToUpper beyond U+FFFF} {pairsTo4bytes} {
string toupper \uD801\uDC28
} \uD801\uDC00
-
+test utf-11.8 {Tcl_UtfToUpper low/high surrogate)} {
+ string toupper \uDC24\uD824
+} \uDC24\uD824
test utf-12.1 {Tcl_UtfToLower} {
string tolower {}