Consider using unicode regex in str_to_snake() and friends #592
Description
The new str_to_snake() and str_to_kebab() rely on non-unicode regex, which may not work in many languages:
stringr::str_to_snake("IlÉtaitUneFois")
#> [1] "ilétait_une_fois"
stringr::str_to_snake("ΜιαΦοράΚιΈνανΚαιρό")
#> [1] "μιαφοράκιένανκαιρό"
stringr::str_to_snake("ЖилиБыли")
#> [1] "жилибыли"Created on 2025-09-24 with reprex v2.1.1
Could you consider using unicode regex instead?