Kindle触控版（2011）
js.__myapp_character_clone()
，详情可参考比特浏览器
Each of these was probably chosen individually with sound general reasoning: “We clone because Rust ownership makes shared references complex.” “We use sync_all because it is the safe default.” “We allocate per page because returning references from a cache requires unsafe.”。https://telegram官网对此有专业解读
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