From 3599ccf7593f25ef6b7e4b711d420a6fc998c72a Mon Sep 17 00:00:00 2001
From: tusooa <tusooa@kazv.moe>
Date: Sun, 25 Dec 2022 20:37:01 -0500
Subject: [PATCH] Do not break hashtag at zwnj

---
 lib/linkify/parser.ex |  2 +-
 test/linkify_test.exs | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/lib/linkify/parser.ex b/lib/linkify/parser.ex
index 233c681..af5afef 100644
--- a/lib/linkify/parser.ex
+++ b/lib/linkify/parser.ex
@@ -15,7 +15,7 @@ defmodule Linkify.Parser do
 
   @get_scheme_host ~r{^\W*(?<scheme>https?:\/\/)?(?:[^@\n]+\\w@)?(?<host>[^:#~\/\n?]+)}u
 
-  @match_hashtag ~r/^(?<tag>\#[[:word:]_]*[[:alpha:]_·][[:word:]_·\p{M}]*)/u
+  @match_hashtag ~r/^(?<tag>\#[[:word:]_]*[[:alpha:]_·\x{200c}][[:word:]_·\p{M}\x{200c}]*)/u
 
   @match_skipped_tag ~r/^(?<tag>(a|code|pre)).*>*/
 
diff --git a/test/linkify_test.exs b/test/linkify_test.exs
index 1abca5f..8a9ace4 100644
--- a/test/linkify_test.exs
+++ b/test/linkify_test.exs
@@ -555,6 +555,18 @@ defmodule LinkifyTest do
                hashtag_prefix: "https://example.com/tag/"
              ) == expected
     end
+
+    test "ZWNJ does not break up hashtags" do
+      text = "#ساٴين‌س"
+
+      expected = "<a href=\"https://example.com/tag/ساٴين‌س\">#ساٴين‌س</a>"
+
+      assert Linkify.link(text,
+               rel: false,
+               hashtag: true,
+               hashtag_prefix: "https://example.com/tag/"
+             ) == expected
+    end
   end
 
   describe "links" do