diff --git a/lib/parse.js b/lib/parse.js
index 692373b..2c3a855 100644
--- a/lib/parse.js
+++ b/lib/parse.js
@@ -1,7 +1,7 @@
 "use strict";
 
 var Parser = require("fastparse");
-var regexpu = require("regexpu-core");
+var uniRegexp = require("./uni-regexp");
 
 function unescape(str) {
 	return str.replace(/\\(.)/g, "$1");
@@ -175,10 +175,10 @@ function getSelectors() {
 	// ISO 10646 characters U+00A0 and higher, plus the hyphen (-) and the underscore (_)
 	//
 	// 10ffff is the maximum allowed in current Unicode
-	selectors[regexpu("\\.((?:\\\\.|[A-Za-z_\\-\\u{00a0}-\\u{10ffff}])(?:\\\\.|[A-Za-z_\\-0-9\\u{00a0}-\\u{10ffff}])*)", "u")] = typeMatch("class");
-	selectors[regexpu("#((?:\\\\.|[A-Za-z_\\-\\u{00a0}-\\u{10ffff}])(?:\\\\.|[A-Za-z_\\-0-9\\u{00a0}-\\u{10ffff}])*)", "u")] = typeMatch("id");
+	selectors[uniRegexp.typeMatchClass] = typeMatch("class");
+	selectors[uniRegexp.typeMatchId] = typeMatch("id");
 	var selectorsSecondHalf = {
-		":(not|matches|has|local|global)\\((\\s*)": nestedPseudoClassStartMatch,
+		":(not|any|-\\w+?-any|matches|is|where|has|local|global)\\((\\s*)": nestedPseudoClassStartMatch,
 		":((?:\\\\.|[A-Za-z_\\-0-9])+)\\(": pseudoClassStartMatch,
 		":((?:\\\\.|[A-Za-z_\\-0-9])+)": typeMatch("pseudo-class"),
 		"::((?:\\\\.|[A-Za-z_\\-0-9])+)": typeMatch("pseudo-element"),
diff --git a/lib/stringify.js b/lib/stringify.js
index 4673a8b..bb63ee8 100644
--- a/lib/stringify.js
+++ b/lib/stringify.js
@@ -1,10 +1,7 @@
 "use strict";
 
-var regexpu = require("regexpu-core");
-var identifierEscapeRegexp = new RegExp(
-	regexpu("(^[^A-Za-z_\\-\\u{00a0}-\\u{10ffff}]|^--|[^A-Za-z_0-9\\-\\u{00a0}-\\u{10ffff}])", "ug"),
-	"g"
-);
+var uniRegexp = require("./uni-regexp");
+var identifierEscapeRegexp = new RegExp(uniRegexp.identifierEscapeRegexp, "g");
 
 function escape(str, identifier) {
 	if(str === "*") {
diff --git a/lib/uni-regexp.js b/lib/uni-regexp.js
new file mode 100644
index 0000000..a60623d
--- /dev/null
+++ b/lib/uni-regexp.js
@@ -0,0 +1,6 @@
+/* AUTO GENERATED */
+module.exports = {
+    "typeMatchClass": "\\.((?:\\\\(?:[\\0-\\t\\x0B\\f\\x0E-\\u2027\\u202A-\\uD7FF\\uE000-\\uFFFF]|[\\uD800-\\uDBFF][\\uDC00-\\uDFFF]|[\\uD800-\\uDBFF](?![\\uDC00-\\uDFFF])|(?:[^\\uD800-\\uDBFF]|^)[\\uDC00-\\uDFFF])|(?:[\\x2DA-Z_a-z\\xA0-\\uD7FF\\uE000-\\uFFFF]|[\\uD800-\\uDBFF][\\uDC00-\\uDFFF]|[\\uD800-\\uDBFF](?![\\uDC00-\\uDFFF])|(?:[^\\uD800-\\uDBFF]|^)[\\uDC00-\\uDFFF]))(?:\\\\(?:[\\0-\\t\\x0B\\f\\x0E-\\u2027\\u202A-\\uD7FF\\uE000-\\uFFFF]|[\\uD800-\\uDBFF][\\uDC00-\\uDFFF]|[\\uD800-\\uDBFF](?![\\uDC00-\\uDFFF])|(?:[^\\uD800-\\uDBFF]|^)[\\uDC00-\\uDFFF])|(?:[\\x2D0-9A-Z_a-z\\xA0-\\uD7FF\\uE000-\\uFFFF]|[\\uD800-\\uDBFF][\\uDC00-\\uDFFF]|[\\uD800-\\uDBFF](?![\\uDC00-\\uDFFF])|(?:[^\\uD800-\\uDBFF]|^)[\\uDC00-\\uDFFF]))*)",
+    "typeMatchId": "#((?:\\\\(?:[\\0-\\t\\x0B\\f\\x0E-\\u2027\\u202A-\\uD7FF\\uE000-\\uFFFF]|[\\uD800-\\uDBFF][\\uDC00-\\uDFFF]|[\\uD800-\\uDBFF](?![\\uDC00-\\uDFFF])|(?:[^\\uD800-\\uDBFF]|^)[\\uDC00-\\uDFFF])|(?:[\\x2DA-Z_a-z\\xA0-\\uD7FF\\uE000-\\uFFFF]|[\\uD800-\\uDBFF][\\uDC00-\\uDFFF]|[\\uD800-\\uDBFF](?![\\uDC00-\\uDFFF])|(?:[^\\uD800-\\uDBFF]|^)[\\uDC00-\\uDFFF]))(?:\\\\(?:[\\0-\\t\\x0B\\f\\x0E-\\u2027\\u202A-\\uD7FF\\uE000-\\uFFFF]|[\\uD800-\\uDBFF][\\uDC00-\\uDFFF]|[\\uD800-\\uDBFF](?![\\uDC00-\\uDFFF])|(?:[^\\uD800-\\uDBFF]|^)[\\uDC00-\\uDFFF])|(?:[\\x2D0-9A-Z_a-z\\xA0-\\uD7FF\\uE000-\\uFFFF]|[\\uD800-\\uDBFF][\\uDC00-\\uDFFF]|[\\uD800-\\uDBFF](?![\\uDC00-\\uDFFF])|(?:[^\\uD800-\\uDBFF]|^)[\\uDC00-\\uDFFF]))*)",
+    "identifierEscapeRegexp": "(^[\\0-,\\.-@\\[-\\^`\\{-\\x9F]|^\\x2D\\x2D|[\\0-,\\.\\/:-@\\[-\\^`\\{-\\x9F])"
+}
diff --git a/package.json b/package.json
index 7554b83..0634278 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "css-selector-tokenizer",
-  "version": "0.7.2",
+  "version": "0.8.0",
   "description": "Parses and stringifies CSS selectors",
   "main": "lib/index.js",
   "scripts": {
@@ -8,6 +8,7 @@
     "pretest": "npm run lint",
     "test": "mocha",
     "cover": "nyc npm test",
+    "build-regexpu": "node scripts/build-regexpu.js",
     "report:coveralls": "nyc report --reporter=text-lcov | coveralls",
     "report:codecov": "nyc report --reporter=text-lcov | codecov --pipe",
     "publish-patch": "npm test && npm version patch && git push && git push --tags && npm publish"
@@ -31,15 +32,15 @@
   "homepage": "https://github.com/css-modules/css-selector-tokenizer",
   "dependencies": {
     "cssesc": "^3.0.0",
-    "fastparse": "^1.1.2",
-    "regexpu-core": "^4.6.0"
+    "fastparse": "^1.1.2"
   },
   "devDependencies": {
     "codecov": "^3.6.5",
     "coveralls": "^3.0.9",
     "eslint": "^6.8.0",
     "mocha": "^7.1.0",
-    "nyc": "^15.0.0"
+    "nyc": "^15.0.0",
+    "regexpu-core": "^4.6.0"
   },
   "directories": {
     "test": "test"
diff --git a/scripts/build-regexpu.js b/scripts/build-regexpu.js
new file mode 100644
index 0000000..2838f50
--- /dev/null
+++ b/scripts/build-regexpu.js
@@ -0,0 +1,29 @@
+var fs = require("fs");
+var path = require("path");
+var regexpu = require("regexpu-core");
+
+var uniReg = {
+  typeMatchClass: regexpu(
+    "\\.((?:\\\\.|[A-Za-z_\\-\\u{00a0}-\\u{10ffff}])(?:\\\\.|[A-Za-z_\\-0-9\\u{00a0}-\\u{10ffff}])*)",
+    "u"
+  ),
+  typeMatchId: regexpu(
+    "#((?:\\\\.|[A-Za-z_\\-\\u{00a0}-\\u{10ffff}])(?:\\\\.|[A-Za-z_\\-0-9\\u{00a0}-\\u{10ffff}])*)",
+    "u"
+  ),
+  identifierEscapeRegexp: regexpu(
+    "(^[^A-Za-z_\\-\\u{00a0}-\\u{10ffff}]|^--|[^A-Za-z_0-9\\-\\u{00a0}-\\u{10ffff}])",
+    "ug"
+  ),
+};
+
+var targetFile = path.join(__dirname, "../lib/uni-regexp.js");
+
+fs.writeFileSync(
+  targetFile,
+  "/* AUTO GENERATED */\nmodule.exports = " +
+    JSON.stringify(uniReg, null, 4) +
+    "\n"
+);
+
+console.log("Done building " + targetFile);
diff --git a/test/test-cases.js b/test/test-cases.js
index 86d48a5..f74a557 100644
--- a/test/test-cases.js
+++ b/test/test-cases.js
@@ -361,7 +361,106 @@ module.exports = {
 			] }
 		])
 	],
-
+	"nested pseudo class with multiple selectors (:is)": [
+		":is( h1, h2 )",
+		singleSelector([{
+			type: "nested-pseudo-class",
+			name: "is",
+			nodes: [{
+					type: "selector",
+					nodes: [{
+						type: "element",
+						name: "h1"
+					}],
+					before: " ",
+				},
+				{
+					type: "selector",
+					nodes: [{
+						type: "element",
+						name: "h2"
+					}],
+					before: " ",
+					after: " ",
+				},
+			],
+		}, ]),
+	],
+	"nested pseudo class with multiple selectors (:where)": [
+		":where( h1, h2 )",
+		singleSelector([{
+			type: "nested-pseudo-class",
+			name: "where",
+			nodes: [{
+					type: "selector",
+					nodes: [{
+						type: "element",
+						name: "h1"
+					}],
+					before: " ",
+				},
+				{
+					type: "selector",
+					nodes: [{
+						type: "element",
+						name: "h2"
+					}],
+					before: " ",
+					after: " ",
+				},
+			],
+		}, ]),
+	],
+	"nested pseudo class with multiple selectors (:any)": [
+		":any( h1, h2 )",
+		singleSelector([{
+			type: "nested-pseudo-class",
+			name: "any",
+			nodes: [{
+					type: "selector",
+					nodes: [{
+						type: "element",
+						name: "h1"
+					}],
+					before: " ",
+				},
+				{
+					type: "selector",
+					nodes: [{
+						type: "element",
+						name: "h2"
+					}],
+					before: " ",
+					after: " ",
+				},
+			],
+		}, ]),
+	],
+	"nested pseudo class with multiple selectors (:-vendor-any)": [
+		":-vendor-any( h1, h2 )",
+		singleSelector([{
+			type: "nested-pseudo-class",
+			name: "-vendor-any",
+			nodes: [{
+					type: "selector",
+					nodes: [{
+						type: "element",
+						name: "h1"
+					}],
+					before: " ",
+				},
+				{
+					type: "selector",
+					nodes: [{
+						type: "element",
+						name: "h2"
+					}],
+					before: " ",
+					after: " ",
+				},
+			],
+		}, ]),
+	],
 	"available nested pseudo classes": [
 		":not(:active):matches(:focus)",
 		singleSelector([