Goのユニコードでのひと文字？はruneだったっけ
規格化は登場するけどgraphene clusterは登場しない
Strings, bytes, runes and characters in Go - The Go Programming Language
https://go.dev/blog/strings
go.devStrings, bytes, runes and characters in Go - The Go Programming LanguageHow strings work in Go, and how to use them.
規格化じゃなくて正規化かな