Nuclear is nuclear, not unclear. Read https://www.unicode.org/reports/tr10/#Searching https://www.unicode.org/reports/tr10/#Searching what unicode has to say a

Nuclear is nuclear, not unclear. Read https://www.unicode.org/reports/tr10/#Searching https://www.unicode.org/reports/tr10/#Searching what unicode has to say about string search, in opposition of the usual byte search grep tools.