From a357a6793fd05b1c395023cff72891a7fcdb0fac Mon Sep 17 00:00:00 2001
From: Morgan Croney <m@morgancroney.com>
Date: Wed, 13 Jul 2016 15:13:25 -0400
Subject: [PATCH] Make linkValidation allow hash links

---
 spec/anchor.spec.js         | 18 ++++++++++++++++++
 src/js/extensions/anchor.js |  3 ++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/spec/anchor.spec.js b/spec/anchor.spec.js
index 188a87875..8e9a42515 100644
--- a/spec/anchor.spec.js
+++ b/spec/anchor.spec.js
@@ -329,6 +329,24 @@ describe('Anchor Button TestCase', function () {
             expect(link).not.toBeNull();
             expect(link.href).toBe(validUrl.toLowerCase());
         });
+        it('should not change fragment identifier when link begins with hash', function () {
+            var editor = this.newMediumEditor('.editor', {
+                    anchor: {
+                        linkValidation: true
+                    }
+                }),
+                validHashLink = '#!$&\'()*+,;=123abcDEF-._~:@/?',
+                link,
+                anchorExtension = editor.getExtensionByName('anchor');
+
+            selectElementContentsAndFire(editor.elements[0]);
+            anchorExtension.showForm(validHashLink);
+            fireEvent(anchorExtension.getForm().querySelector('a.medium-editor-toolbar-save'), 'click');
+
+            link = editor.elements[0].querySelector('a');
+            expect(link).not.toBeNull();
+            expect(link.getAttribute('href')).toBe(validHashLink);
+        });
         it('should change spaces to %20 for a valid url if linkValidation options is set to true', function () {
             var editor = this.newMediumEditor('.editor', {
                 anchor: {
diff --git a/src/js/extensions/anchor.js b/src/js/extensions/anchor.js
index 2c4d05f6c..fb321c515 100644
--- a/src/js/extensions/anchor.js
+++ b/src/js/extensions/anchor.js
@@ -235,7 +235,8 @@
             // Matches any alphabetical characters followed by ://
             // Matches protocol relative "//"
             // Matches common external protocols "mailto:" "tel:" "maps:"
-            var urlSchemeRegex = /^([a-z]+:)?\/\/|^(mailto|tel|maps):/i,
+            // Matches relative hash link, "#" followed by any character
+            var urlSchemeRegex = /^([a-z]+:)?\/\/|^(mailto|tel|maps):|^\#.+/i,
             // var te is a regex for checking if the string is a telephone number
             telRegex = /^\+?\s?\(?(?:\d\s?\-?\)?){3,20}$/;
             if (telRegex.test(value)) {