feat: add merged forward message (合并转发) parsing support#9
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- Add _format_merged_forward_message to parse app_type 17/19 XML - Extract individual messages from <recorditem> <dataitem> elements - Show sender, timestamp, and content for each forwarded message - Handle nested forwarded messages and file references - Fix XML parsing failure when <?xml?> declaration is embedded inside <msg> - Increase _XML_PARSE_MAX_LEN from 20000 to 200000 for long chat records Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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Summary
Add merged forward (合并转发) message parsing support to wechat-cli.
Problem
When WeChat users forward multiple messages together (合并转发), the resulting chat record uses app_type=17 or app_type=19. Previously, wechat-cli displayed these as [链接/文件], making the forwarded content unreadable.
Changes
1. New function:
_format_merged_forward_message()Parses the nested XML structure inside merged forward messages:
<recorditem>to<dataitem>elements from CDATA sections<desc>text when structured data is unavailable├ sender [time]: content2. Increased XML parse size limit
_XML_PARSE_MAX_LEN: 20000 -> 2000003. XML declaration cleanup
re.sub(r'<\?xml\b[^?]*\?>', '', content)before parsing<?xml version="1.0"?>is embedded inside the<msg>tag4. App type routing
app_type in (17, 19)branch in_format_app_message_text()[链接/文件]Before/After
Testing
Tested with real WeChat merged forward messages from group chats, including a 64KB chat record containing dozens of messages.