Support for Medium subdomains

extension/background.ts

@@ -396,7 +396,7 @@ function createContextMenu(text: string, id: ContextMenuCommand) {
             "*://*.reddit.com/*",
             "*://*.twitter.com/*",
             "*://*.t.co/*",
-            "*://medium.com/*",
+            "*://*.medium.com/*",
             "*://disqus.com/*",
             "*://*.tumblr.com/*",
             "*://*.wikipedia.org/*",

extension/content.ts

@@ -518,6 +518,10 @@ function getIdentifierFromURLImpl(url: URL): string {
     } else if (domainIs(host, 'disqus.com') && url.pathname.startsWith('/by/')) {
         return 'disqus.com' + getPartialPath(url.pathname, 2);
     } else if (domainIs(host, 'medium.com')) {
+        const hostParts = host.split('.');
+        if (hostParts.length == 3 && hostParts[0] != 'www') { 
+            return host;
+        }
         return 'medium.com' + getPartialPath(url.pathname.replace('/t/', '/'), 1);
     } else if (domainIs(host, 'tumblr.com')) {
         if (url.pathname.startsWith('/register/follow/')) {

extension/manifest.json

@@ -17,7 +17,7 @@
                 "*://*.youtube.com/*",
                 "*://*.reddit.com/*",
                 "*://*.twitter.com/*",
-                "*://medium.com/*",
+                "*://*.medium.com/*",
                 "*://disqus.com/*",
                 "*://*.tumblr.com/*",
                 "*://*.wikipedia.org/*",