libmpv: how to set the user-agent in the loadfile command?

[lyh8577]

How to configure the user-agent in the fourth argument when it contains a delimiter ,?

user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36
loadfile command: https://mpv.io/manual/master/#command-interface-[%3Coptions%3E]]]

[verygoodlee]

loadfile "https://example.com/..." append -1 'user-agent="Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36"'

or

loadfile "https://example.com/..." append -1 "user-agent=\"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36\""