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+# telegram Markdown 代码块格式修复记录 2025-12-15
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+
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+## 问题
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+
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+排盘完成后发送消息报错:
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+```
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+❌ 排盘失败: Can't parse entities: can't find end of the entity starting at byte offset 168
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+```
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+
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+## 原因
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+
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+`bot.py` 中 `header` 消息的 Markdown 代码块格式错误。
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+
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+原代码使用字符串拼接,在 ``` 后面加了 `\n`,导致 Telegram Markdown 解析器无法正确识别代码块边界:
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+
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+```python
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+# 错误写法
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+header = (
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+ "```\n"
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+ f"{filename}\n"
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+ "```\n"
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+)
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+```
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+
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+## 修复
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+
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+改用三引号字符串,确保 ``` 单独成行:
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+
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+```python
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+# 正确写法
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+header = f"""报告见附件
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+```
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+{filename}
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+{ai_filename}
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+```
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+"""
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+```
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+
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+## 修改文件
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+
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+- `services/telegram-service/src/bot.py` 第 293-308 行
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