Support new /joinchat/ url format

src/lib/appManagers/appImManager.ts

@@ -308,12 +308,13 @@ export class AppImManager {
       }
     });
 
+    // Support old t.me/joinchat/asd and new t.me/+asd
     this.addAnchorListener<{pathnameParams: ['joinchat', string]}>({
       name: 'joinchat', 
       callback: ({pathnameParams}) => {
         const link: InternalLink = {
           _: INTERNAL_LINK_TYPE.JOIN_CHAT,
-          invite: pathnameParams[1]
+          invite: pathnameParams[1] || decodeURIComponent(pathnameParams[0]).slice(1)
         };
 
         this.processInternalLink(link);

src/lib/richtextprocessor.ts

@@ -847,6 +847,12 @@ namespace RichTextProcessor {
       url = 'tg://unsafe_url?url=' + encodeURIComponent(url);
     } else  */if((tgMeMatch = url.match(/^(?:https?:\/\/)?t(?:elegram)?\.me\/(.+)/))) {
       const fullPath = tgMeMatch[1];
+
+      if(/^\W/.test(fullPath)) {
+        onclick = 'joinchat';
+        return {url, onclick};
+      }
+
       const path = fullPath.split('/');
       switch(path[0]) {
         case 'joinchat':