subject search chinese not support？

[pql-eternally]

我使用IMAPClient版本是3.0.0，我使用下面按中文搜索主题时不生效且底层会报错。 client.search(['SUBJECT', '每日信用管家'], charset='UTF-8')

[zhangjiale2020]

I also encountered the same problem

python3.8/site-packages/imapclient/imapclient.py

[zhangjiale2020]

server.search(['SUBJECT', '中国乡村'], charset='UTF-8')

[mjs]

This looks like a bug in _send_literal. It should be calling the has_capability method instead of assuming cached_capabilities has been populated.

A workaround would be to call the capabilities method after login. That will ensure the cached capabilities are set.

I will work on a proper fix.