fix hashtag regexp

cypress/e2e/embeds.cy.ts

@@ -3,6 +3,19 @@ describe("Embeds", () => {
     cy.loginWithNewUser();
   });
 
+  describe("hashtags", () => {
+    it.only('should handle uppercase hashtags and ","', () => {
+      cy.visit(
+        "/n/nevent1qqsrj5ns6wva3fcghlyx0hp7hhajqtqk3kuckp7xhhscrm4jl7futegpz9mhxue69uhkummnw3e82efwvdhk6qgswaehxw309ahx7um5wgh8w6twv5pkpt8l"
+      );
+
+      cy.findByRole("link", { name: "#Japan" }).should("be.visible");
+      cy.findByRole("link", { name: "#kyudo" }).should("be.visible");
+      cy.findByRole("link", { name: "#Shiseikan" }).should("be.visible");
+      cy.findByRole("link", { name: "#Nostrasia" }).should("be.visible");
+    });
+  });
+
   describe("links", () => {
     it("embed trustless.computer links", () => {
       cy.visit(

src/components/embed-types/nostr.tsx

@@ -67,16 +67,18 @@ export function embedNostrHashtags(content: EmbedableContent, event: NostrEvent
 
   return embedJSX(content, {
     name: "nostr-hashtag",
-    regexp: /#([^\[\]\s]+)/i,
+    regexp: /#(\w+)/i,
     render: (match) => {
       const hashtag = match[1].toLowerCase();
+
       if (hashtags.includes(hashtag)) {
         return (
           <Link as={RouterLink} to={`/t/${hashtag}`} color="blue.500">
             #{match[1]}
           </Link>
         );
-      }
+      } else console.log(hashtag, hashtags);
+
       return match[0];
     },
   });