The Email pattern of Search & Redact accepted only ASCII letters and
digits, so addresses such as "ayşe.yılmaz@örnek.com.tr", "müller@bücher.de"
or "иван@пример.рф" (RFC 6531 local parts, IDN domains) were not found
and stayed visible after a redaction by pattern.
Letters and digits of any script written with spaces now count in the
local part, the domain and the top-level domain. Scripts written without
spaces (Chinese, Japanese, Korean, Thai, …) still don't, so text that
runs straight into an address, as in "メールはtaro@example.jpまで", is not
swallowed into it. A domain still needs a dot and an alphabetic top-level
domain of two or more letters.