Restore linked input settings and attribute test notifications to Fcitx

test/acceptance.d/input-method-notifications.py

@@ -0,0 +1,30 @@
+"""Select notifications sent by Fcitx, including addons with custom app names."""
+
+from pathlib import Path
+import re
+import sys
+
+
+def input_notifications(text, initial_owner):
+  calls = re.split(r"(?m)^(?=(?:method call|signal|method return|error)\b)", text)
+  owners = {initial_owner}
+  for call in calls:
+    if "interface=org.freedesktop.DBus; member=NameOwnerChanged" in call.split("\n", 1)[0]:
+      names = re.findall(r'^\s*string "([^"]*)"', call, re.MULTILINE)
+      if len(names) == 3 and names[0] == "org.fcitx.Fcitx5":
+        owners.update(names[1:])
+  owners.discard("")
+  for call in calls:
+    header = call.split("\n", 1)[0]
+    if "interface=org.freedesktop.Notifications; member=Notify" not in header:
+      continue
+    sender = re.search(r"\bsender=(\S+)", header)
+    if sender and sender[1] in owners:
+      yield call
+
+
+if __name__ == "__main__":
+  found = list(input_notifications(Path(sys.argv[1]).read_text(errors="replace"), sys.argv[2]))
+  if found:
+    print("\n".join(found))
+  raise SystemExit(1 if found else 0)