https://www.sqlite.org/src/info/afbbb6c66a85ff3f

--- a/ext/icu/icu.c
+++ b/ext/icu/icu.c
@@ -500,20 +500,20 @@
     void *pContext;                           /* sqlite3_user_data() context */
     void (*xFunc)(sqlite3_context*,int,sqlite3_value**);
   } scalars[] = {
-    {"regexp", 2, SQLITE_ANY,          0, icuRegexpFunc},
+    {"regexp", 2, SQLITE_ANY|SQLITE_DETERMINISTIC,          0, icuRegexpFunc},
 
-    {"lower",  1, SQLITE_UTF16,        0, icuCaseFunc16},
-    {"lower",  2, SQLITE_UTF16,        0, icuCaseFunc16},
-    {"upper",  1, SQLITE_UTF16, (void*)1, icuCaseFunc16},
-    {"upper",  2, SQLITE_UTF16, (void*)1, icuCaseFunc16},
+    {"lower",  1, SQLITE_UTF16|SQLITE_DETERMINISTIC,        0, icuCaseFunc16},
+    {"lower",  2, SQLITE_UTF16|SQLITE_DETERMINISTIC,        0, icuCaseFunc16},
+    {"upper",  1, SQLITE_UTF16|SQLITE_DETERMINISTIC, (void*)1, icuCaseFunc16},
+    {"upper",  2, SQLITE_UTF16|SQLITE_DETERMINISTIC, (void*)1, icuCaseFunc16},
 
-    {"lower",  1, SQLITE_UTF8,         0, icuCaseFunc16},
-    {"lower",  2, SQLITE_UTF8,         0, icuCaseFunc16},
-    {"upper",  1, SQLITE_UTF8,  (void*)1, icuCaseFunc16},
-    {"upper",  2, SQLITE_UTF8,  (void*)1, icuCaseFunc16},
+    {"lower",  1, SQLITE_UTF8|SQLITE_DETERMINISTIC,         0, icuCaseFunc16},
+    {"lower",  2, SQLITE_UTF8|SQLITE_DETERMINISTIC,         0, icuCaseFunc16},
+    {"upper",  1, SQLITE_UTF8|SQLITE_DETERMINISTIC,  (void*)1, icuCaseFunc16},
+    {"upper",  2, SQLITE_UTF8|SQLITE_DETERMINISTIC,  (void*)1, icuCaseFunc16},
 
-    {"like",   2, SQLITE_UTF8,         0, icuLikeFunc},
-    {"like",   3, SQLITE_UTF8,         0, icuLikeFunc},
+    {"like",   2, SQLITE_UTF8|SQLITE_DETERMINISTIC,         0, icuLikeFunc},
+    {"like",   3, SQLITE_UTF8|SQLITE_DETERMINISTIC,         0, icuLikeFunc},
 
     {"icu_load_collation",  2, SQLITE_UTF8, (void*)db, icuLoadCollation},
   };
--- a/test/cursorhint2.test
+++ b/test/cursorhint2.test
@@ -164,17 +164,19 @@
   x2 {AND(EQ(c1,ADD(32,32)),EQ(c0,r[2]))}
 }
 
-do_extract_hints_test 2.11 {
-  SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE x2.b LIKE 'abc%'
-} {
-  x2 {AND(expr,EQ(c0,r[2]))}
+ifcapable !icu {
+  # This test only works using the built-in LIKE, not the ICU LIKE extension.
+  do_extract_hints_test 2.11 {
+    SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE x2.b LIKE 'abc%'
+  } {
+    x2 {AND(expr,EQ(c0,r[2]))}
+  }
 }
 
-do_extract_hints_test 2.11 {
+do_extract_hints_test 2.12 {
   SELECT * FROM x1 LEFT JOIN x2 ON (a=x) WHERE coalesce(x2.b, 1)
 } {
   x2 {EQ(c0,r[2])}
 }
 
 finish_test
-