ℕ𝕠-𝕠𝕟𝕖 𝕚𝕟 𝕥𝕙𝕖𝕚𝕣 𝕣𝕚𝕘𝕙𝕥 𝕞𝕚𝕟𝕕 𝕨𝕠𝕦𝕝𝕕 𝕖𝕧𝕖𝕣 𝕦𝕤𝕖 𝕥𝕙𝕖𝕤𝕖 𝕒𝕟𝕟𝕠𝕪𝕚𝕟𝕘 𝕗𝕠𝕟𝕥 𝕧𝕒𝕣𝕚𝕒𝕟𝕥𝕤. 𝕋𝕙𝕖 𝕨𝕠𝕣𝕤𝕥 𝕥𝕙𝕚𝕟𝕘, 𝕚𝕤 𝕚𝕗 𝕪𝕠𝕦 𝕕𝕠 𝕒𝕟𝕪 𝕗𝕠𝕣𝕞 𝕠𝕗 ℕ𝕃ℙ 𝕒𝕟𝕕 𝕪𝕠𝕦 𝕙𝕒𝕧𝕖 𝕔𝕙𝕒𝕣𝕒𝕔𝕥𝕖𝕣𝕤 𝕝...
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This topic is briefly covered in this article: devopedia.org/text-normalization
In particular, check out the 4 forms: NFD, NFC, NFKD and NFKC