Don't treat U+180E as whitespace

js/src/javascript/tokenizer.js

@@ -106,7 +106,7 @@ var Tokenizer = function(input_string, options) {
   BaseTokenizer.call(this, input_string, options);
 
   this._patterns.whitespace = this._patterns.whitespace.matching(
-    /\u00A0\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff/.source,
+    /\u00A0\u1680\u2000-\u200a\u202f\u205f\u3000\ufeff/.source,
     /\u2028\u2029/.source);
 
   var pattern_reader = new Pattern(this._input);

python/jsbeautifier/javascript/acorn.py

@@ -67,7 +67,7 @@
     + "])+"
 )
 
-_nonASCIIwhitespace = re.compile(r"[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]")
+_nonASCIIwhitespace = re.compile(r"[\u1680\u2000-\u200a\u202f\u205f\u3000\ufeff]")
 
 # Whether a single character denotes a newline.
 newline = re.compile(r"[\n\r\u2028\u2029]")

python/jsbeautifier/javascript/tokenizer.py

@@ -131,7 +131,7 @@ def __init__(self, input_scanner, acorn, options):
         BaseTokenizerPatterns.__init__(self, input_scanner)
 
         self.whitespace = self.whitespace.matching(
-            r"\u00A0\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff",
+            r"\u00A0\u1680\u2000-\u200a\u202f\u205f\u3000\ufeff",
             r"\u2028\u2029",
         )
 

test/data/html/tests.js

@@ -4414,6 +4414,12 @@ exports.test_data = {
         '</style>'
       ]
     }]
+  }, {
+    name: "PR #2459 Mongolian Vowel Separator",
+    description: "",
+    tests: [{
+      unchanged: "<p>ᠬᠠᠷ᠎ᠠ</p>"
+    }]
   }, {
     name: "New Test Suite"
   }]