NFD中为什么会有NFC; [:非间距标记:] 移除;近场通信?

Why is there NFC in NFD; [:Nonspacing Mark:] Remove; NFC?

http://userguide.icu-project.org/transforms/general上可以阅读

to remove accents from characters, use the following transform:

NFD; [:Nonspacing Mark:] Remove; NFC.

This transform separates accents from their base characters, removes the accents, and then puts the remaining text into an unaccented form.

NFD 执行规范分解,那么为什么在删除非间距标记后需要重新组合?

好的,规范分解不限于变音符号;我得到了可以分成许多 jamos 的韩文音节的例子。然后重组这些字符才有意义。