Allow triple hyphen in IDNA hostnames, closes #466

Author: chriso

CHANGELOG.md

@@ -1,3 +1,8 @@
+#### HEAD
+
+- Allow triple hyphens in IDNA hostnames
+  ([#466](https://github.com/chriso/validator.js/issues/466))
+
 #### 4.4.0
 
 - Added `isMACAddress()` validator

test/validators.js

@@ -183,6 +183,7 @@ describe('Validators', function () {
               , 'http://foo--bar.com'
               , 'http://høyfjellet.no'
               , 'http://xn--j1aac5a4g.xn--j1amh'
+              , 'http://xn------eddceddeftq7bvv7c4ke4c.xn--p1ai'
               , 'http://кулік.укр'
             ]
           , invalid: [

validator.js

@@ -399,8 +399,10 @@
                 // disallow full-width chars
                 return false;
             }
-            if (part[0] === '-' || part[part.length - 1] === '-' ||
-                    part.indexOf('---') >= 0) {
+            if (part[0] === '-' || part[part.length - 1] === '-') {
+                return false;
+            }
+            if (part.indexOf('---') >= 0 && part.slice(0, 4) !== 'xn--') {
                 return false;
             }
         }