[Feature] Rich Text editor can support set a word as a whole,

[kkxxkk2019]

What problem does this feature solve?

富文本编辑器中，每一将一个单词视为一个整体，比如 '10%' 在有的场景里是希望作为一个整体去配置的，期望当中的每一个字符都可以被配置

What does the proposed API look like?

NA