From f605f9cf2750f7b760011762692f7b45af2c5116 Mon Sep 17 00:00:00 2001
From: Michael Telatynski <7t3chguy@gmail.com>
Date: Fri, 5 May 2023 09:32:12 +0100
Subject: [PATCH] Update finite automate to match user identifiers as per spec

---
 src/linkify-matrix.ts       |  4 +++-
 test/linkify-matrix-test.ts | 16 ++++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/linkify-matrix.ts b/src/linkify-matrix.ts
index 456298ce11e..45fa06779e1 100644
--- a/src/linkify-matrix.ts
+++ b/src/linkify-matrix.ts
@@ -58,6 +58,8 @@ function matrixOpaqueIdLinkifyParser({
         TLD,
         COLON,
         SYM,
+        SLASH,
+        EQUALS,
         HYPHEN,
         UNDERSCORE,
         // because 'localhost' is tokenised to the localhost token,
@@ -69,7 +71,7 @@ function matrixOpaqueIdLinkifyParser({
     const S_START = parser.start;
     const matrixSymbol = utils.createTokenClass(name, { isLink: true });
 
-    const localpartTokens = [domain, TLD, LOCALHOST, SYM, UNDERSCORE, HYPHEN];
+    const localpartTokens = [domain, TLD, DOT, LOCALHOST, SYM, SLASH, EQUALS, UNDERSCORE, HYPHEN];
     const domainpartTokens = [domain, TLD, LOCALHOST, HYPHEN];
 
     const INITIAL_STATE = S_START.tt(token);
diff --git a/test/linkify-matrix-test.ts b/test/linkify-matrix-test.ts
index eaab5b039d3..22694da9db5 100644
--- a/test/linkify-matrix-test.ts
+++ b/test/linkify-matrix-test.ts
@@ -303,6 +303,22 @@ describe("linkify-matrix", () => {
 
     describe("userid plugin", () => {
         genTests("@");
+
+        it("allows dots in localparts", () => {
+            const test = "@test.:matrix.org";
+            const found = linkify.find(test);
+            expect(found).toEqual([
+                {
+                    href: test,
+                    type: "userid",
+                    value: test,
+                    start: 0,
+                    end: test.length,
+
+                    isLink: true,
+                },
+            ]);
+        });
     });
 
     describe("matrix uri", () => {