The Zip spec does not seem to know that there are normalization models for UTF-8, when there are actually 4 (or more, because there is some non-standard ones too!). The Zip file gives no guidance as to how file names inside zip files are to be normalized.
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The Zip spec says that the only supported encodings are CP437 and UTF-8, but everyone has ignored that. Implementers just encode file names however they want (usually byte for byte as they are in the OS…
很遗憾,Mac 自带的 zip 命令就属于最后一句中 Implementers。虽然我不是很清楚“文件头中没有声明 PKZIP 高版本增加的 Unicode 位”中的细节,不过后来通过比较发现,无乱码和有乱码的 zip 文件,以 16进制方式查看时,文件名中中文字符的编码是一样的,不同之处确实在 zip 文件头。