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diff --git a/js/src/tests/non262/Intl/Segmenter/sentence-latin.js b/js/src/tests/non262/Intl/Segmenter/sentence-latin.js
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+++ b/js/src/tests/non262/Intl/Segmenter/sentence-latin.js
@@ -0,0 +1,96 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')||!this.Intl.Segmenter)
+
+// https://www.unicode.org/reports/tr29/#Sentence_Boundary_Rules
+
+const strings = {
+  // SB1, SB2
+  "": [],
+
+  // SB3
+  "\r\n": ["\r\n"],
+
+  // SB4
+  "First paragraph.\nSecond paragraph.": ["First paragraph.\n", "Second paragraph."],
+  "First paragraph.\rSecond paragraph.": ["First paragraph.\r", "Second paragraph."],
+  "First paragraph.\r\nSecond paragraph.": ["First paragraph.\r\n", "Second paragraph."],
+  "First paragraph.\x85Second paragraph.": ["First paragraph.\x85", "Second paragraph."],
+
+  // SB5
+  "\xADWo\xADrd\xAD.\xAD": ["\xADWo\xADrd\xAD.\xAD"],
+  "Word.\n\xAD": ["Word.\n", "\xAD"],
+  "Word.\r\xAD\n": ["Word.\r", "\xAD\n"],
+
+  // SB6
+  ".2": [".2"],
+  "1.2": ["1.2"],
+  "!2": ["!", "2"],
+  "1!2": ["1!", "2"],
+
+  // SB7
+  "A.B": ["A.B"],
+  "a.B": ["a.B"],
+  "A. B": ["A. ", "B"],
+  "a. B": ["a. ", "B"],
+
+  // SB8
+  "#.a": ["#.a"],
+  "#. a": ["#. a"],
+  "#. # a": ["#. # a"],
+  "#. 1 a": ["#. 1 a"],
+  "#. , a": ["#. , a"],
+  "#. Aa": ["#. ", "Aa"],
+
+  // SB8a
+  "Word..": ["Word.."],
+  "Word . , ": ["Word . , "],
+  "Word.'\t , ": ["Word.'\t , "],
+
+  // SB9, SB10, SB11
+  "Word.''": ["Word.''"],
+  "Word.'\t ": ["Word.'\t "],
+  "Word.'\t \n": ["Word.'\t \n"],
+};
+
+function assertSegments(string, sentences) {
+  let seg = segmenter.segment(string);
+  let segments = [...seg];
+
+  // The computed segments match the expected value.
+  assertEqArray(segments.map(({segment}) => segment), sentences);
+
+  // |containing()| should return the same result.
+  for (let expected of segments) {
+    let {segment, index} = expected;
+    for (let i = index; i < index + segment.length; ++i) {
+      let actual = seg.containing(i);
+      assertDeepEq(actual, expected);
+    }
+  }
+}
+
+let segmenter = new Intl.Segmenter("en", {granularity: "sentence"});
+
+for (let [string, words] of Object.entries(strings)) {
+  assertSegments(string, words);
+}
+
+// Locale-dependent sentence segmentation.
+{
+  // https://en.wikipedia.org/wiki/Greek_question_mark#Greek_question_mark
+  let string = "A sentence; semicolon separated.";
+
+  let english = new Intl.Segmenter("en", {granularity: "sentence"});
+  let greek = new Intl.Segmenter("el", {granularity: "sentence"});
+
+  // A single sentence in English.
+  assertEq([...english.segment(string)].length, 1);
+
+  // ICU4C: Two sentences in Greek.
+  // assertEq([...greek.segment(string)].length, 2);
+
+  // ICU4X: A single sentence in Greek.
+  assertEq([...greek.segment(string)].length, 1);
+}
+
+if (typeof reportCompare === "function")
+  reportCompare(0, 0);