From 98147e6a6c3eae29649c84a3a073a38c5f47e27e Mon Sep 17 00:00:00 2001
From: Zichao Lin <earthjasonlin@163.com>
Date: Mon, 13 Jul 2026 08:27:16 +0800
Subject: [PATCH] fix: omit parse_mode from payload when None instead of
 sending null

---
 src/tg_bot.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/tg_bot.py b/src/tg_bot.py
index fc058d3..c49911e 100644
--- a/src/tg_bot.py
+++ b/src/tg_bot.py
@@ -69,8 +69,10 @@ def edit_message(tg_cfg: TelegramConfig, chat_id: str, msg_id: int,
                  text: str, reply_markup: dict = None, parse_mode: str = "MarkdownV2"):
     payload = {
         "chat_id": chat_id, "message_id": msg_id,
-        "text": text, "parse_mode": parse_mode,
+        "text": text,
     }
+    if parse_mode:
+        payload["parse_mode"] = parse_mode
     if reply_markup:
         payload["reply_markup"] = reply_markup
     _tg_req(tg_cfg, "editMessageText", payload)