escape . only once, and remove space inside the curly brackets and it works.
iex> ~r/^((?!-)[A-Za-z0-9-]{1,63}(?<!-)\.)+[A-Za-z]{2,6}$/ |> Regex.match?("domain-name.domain-name.ext")
true
escape . only once, and remove space inside the curly brackets and it works.
iex> ~r/^((?!-)[A-Za-z0-9-]{1,63}(?<!-)\.)+[A-Za-z]{2,6}$/ |> Regex.match?("domain-name.domain-name.ext")
true
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