From 49d95432d29abae4c65330f6b56fa65f244651e4 Mon Sep 17 00:00:00 2001
From: Michael Scherer <misc@redhat.com>
Date: Sep 04 2020 12:30:05 +0000
Subject: Remove fenced code block when checking mention


Fix bug #4978

We have to remove code using the '~~~~' markup since
this result in incorrect trigger, especially on private
ticket.

---

diff --git a/pagure/lib/notify.py b/pagure/lib/notify.py
index 0c124db..02c277c 100644
--- a/pagure/lib/notify.py
+++ b/pagure/lib/notify.py
@@ -35,6 +35,7 @@ import pagure.lib.query
 import pagure.lib.tasks_services
 from pagure.config import config as pagure_config
 from pagure.pfmarkdown import MENTION_RE
+from markdown.extensions.fenced_code import FencedBlockPreprocessor
 
 
 _log = logging.getLogger(__name__)
@@ -234,7 +235,10 @@ def _add_mentioned_users(emails, comment):
     """ Check the comment to see if an user is mentioned in it and if
     so add this user to the list of people to notify.
     """
-    for username in re.findall(MENTION_RE, comment):
+    filtered_comment = re.sub(
+        FencedBlockPreprocessor.FENCED_BLOCK_RE, "", comment
+    )
+    for username in re.findall(MENTION_RE, filtered_comment):
         user = pagure.lib.query.search_user(flask.g.session, username=username)
         if user:
             emails.add(user.default_email)
diff --git a/tests/test_pagure_lib_notify.py b/tests/test_pagure_lib_notify.py
index 8d31cb7..78af57a 100644
--- a/tests/test_pagure_lib_notify.py
+++ b/tests/test_pagure_lib_notify.py
@@ -25,6 +25,7 @@ import pagure.lib.model
 import pagure.lib.notify
 import pagure.lib.query
 import tests
+import munch
 
 
 class PagureLibNotifytests(tests.Modeltests):
@@ -543,6 +544,31 @@ RW1haWwgY29udGVudA==
 """
         self.assertEqual(email.as_string(), exp)
 
+    def test_notification_mention(self):
+        g = munch.Munch()
+        g.session = self.session
+        with patch("flask.g", g):
+
+            def _check_mention(comment, exp):
+                emails = set([])
+                emails = pagure.lib.notify._add_mentioned_users(
+                    emails, comment
+                )
+
+                self.assertEqual(emails, exp)
+
+            exp = set(["bar@pingou.com"])
+            comment = "I think we should ask @pingou how to pronounce pagure"
+            _check_mention(comment, exp)
+
+            exp = set([])
+            comment = """Let me quote him:
+~~~~
+ @pingou> Pagure is pronounced 'pa-gure', not 'pagu-re'
+~~~~
+"""
+            _check_mention(comment, exp)
+
 
 if __name__ == "__main__":
     unittest.main(verbosity=2)