1 files changed, 46 insertions, 0 deletions
diff --git a/integration/snippets/latin1-chars-in-regexp.js b/integration/snippets/latin1-chars-in-regexp.js
new file mode 100644
index 000000000..34a6c4a2a
--- /dev/null
+++ b/integration/snippets/latin1-chars-in-regexp.js
@@ -0,0 +1,46 @@
+// original code:
+// var re_btou = new RegExp(
+//   [
+//     "[\xC0-\xDF][\x80-\xBF]",
+//     "[\xE0-\xEF][\x80-\xBF]{2}",
+//     "[\xF0-\xF7][\x80-\xBF]{3}",
+//   ].join("|"),
+//   "g"
+// );
+
+var re_utob = /[\uD800-\uDBFF][\uDC00-\uDFFFF]|[^\x00-\x7F]/g;
+var re_utob = /[\uD800-\uDBFF][\uDC00-\uDFFFF]|[^\x00-\x7F]/g;
+var re_btou = new RegExp(
+  [
+    "[\xC0-\xDF][\x80-\xBF]",
+    "[\xE0-\xEF][\x80-\xBF]{2}",
+    "[\xF0-\xF7][\x80-\xBF]{3}",
+  ].join("|"),
+  "g"
+);
+
+const real = [
+  "[\xC0-\xDF][\x80-\xBF]",
+  "[\xE0-\xEF][\x80-\xBF]{2}",
+  "[\xF0-\xF7][\x80-\xBF]{3}",
+]
+  .flatMap((a) => a.split(""))
+  .map((a) => a.codePointAt(0));
+
+const expected = [
+  91, 192, 45, 223, 93, 91, 128, 45, 191, 93, 91, 224, 45, 239, 93, 91, 128, 45,
+  191, 93, 123, 50, 125, 91, 240, 45, 247, 93, 91, 128, 45, 191, 93, 123, 51,
+  125,
+];
+
+export function test() {
+  if (!real.every((point, i) => point === expected[i])) {
+    throw new Error(
+      `test failed.\n\nExpected:\n ${expected.join(
+        " "
+      )}\Received:\n ${real.join(" ")}`
+    );
+  }
+
+  testDone(import.meta.url);
+}