snapshot of https://github.com/zulip/zulip.git @ 48c69911c7dd4e03b20552eb3bd77ad8151c1357 (2026-09-15)

zerver/migrations/0359_re2_linkifiers.py

@@ -0,0 +1,38 @@
+import re2
+from django.db import migrations
+from django.db.backends.base.schema import BaseDatabaseSchemaEditor
+from django.db.migrations.state import StateApps
+
+
+def delete_re2_invalid(apps: StateApps, schema_editor: BaseDatabaseSchemaEditor) -> None:
+    options = re2.Options()
+    options.log_errors = False
+
+    RealmFilter = apps.get_model("zerver", "RealmFilter")
+    found_errors = False
+    for linkifier in RealmFilter.objects.all().iterator():
+        try:
+            re2.compile(linkifier.pattern, options=options)
+        except re2.error:
+            if not found_errors:
+                print()
+            found_errors = True
+            print(
+                f"Deleting linkifier {linkifier.id} in realm {linkifier.realm.string_id} which is not compatible with new re2 engine:"
+            )
+            print(f"  {linkifier.pattern} -> {linkifier.url_format_string}")
+            linkifier.delete()
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("zerver", "0325_alter_realmplayground_unique_together"),
+    ]
+
+    operations = [
+        migrations.RunPython(
+            delete_re2_invalid,
+            reverse_code=migrations.RunPython.noop,
+            elidable=True,
+        )
+    ]