two version of R2R are hereHEADmaster

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diff --git a/.venv/lib/python3.12/site-packages/email_validator/rfc_constants.py b/.venv/lib/python3.12/site-packages/email_validator/rfc_constants.py
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+# These constants are defined by the email specifications.
+
+import re
+
+# Based on RFC 5322 3.2.3, these characters are permitted in email
+# addresses (not taking into account internationalization) separated by dots:
+ATEXT = r'a-zA-Z0-9_!#\$%&\'\*\+\-/=\?\^`\{\|\}~'
+ATEXT_RE = re.compile('[.' + ATEXT + ']')  # ATEXT plus dots
+DOT_ATOM_TEXT = re.compile('[' + ATEXT + ']+(?:\\.[' + ATEXT + r']+)*\Z')
+
+# RFC 6531 3.3 extends the allowed characters in internationalized
+# addresses to also include three specific ranges of UTF8 defined in
+# RFC 3629 section 4, which appear to be the Unicode code points from
+# U+0080 to U+10FFFF.
+ATEXT_INTL = ATEXT + "\u0080-\U0010FFFF"
+ATEXT_INTL_DOT_RE = re.compile('[.' + ATEXT_INTL + ']')  # ATEXT_INTL plus dots
+DOT_ATOM_TEXT_INTL = re.compile('[' + ATEXT_INTL + ']+(?:\\.[' + ATEXT_INTL + r']+)*\Z')
+
+# The domain part of the email address, after IDNA (ASCII) encoding,
+# must also satisfy the requirements of RFC 952/RFC 1123 2.1 which
+# restrict the allowed characters of hostnames further.
+ATEXT_HOSTNAME_INTL = re.compile(r"[a-zA-Z0-9\-\." + "\u0080-\U0010FFFF" + "]")
+HOSTNAME_LABEL = r'(?:(?:[a-zA-Z0-9][a-zA-Z0-9\-]*)?[a-zA-Z0-9])'
+DOT_ATOM_TEXT_HOSTNAME = re.compile(HOSTNAME_LABEL + r'(?:\.' + HOSTNAME_LABEL + r')*\Z')
+DOMAIN_NAME_REGEX = re.compile(r"[A-Za-z]\Z")  # all TLDs currently end with a letter
+
+# Domain literal (RFC 5322 3.4.1)
+DOMAIN_LITERAL_CHARS = re.compile(r"[\u0021-\u00FA\u005E-\u007E]")
+
+# Quoted-string local part (RFC 5321 4.1.2, internationalized by RFC 6531 3.3)
+# The permitted characters in a quoted string are the characters in the range
+# 32-126, except that quotes and (literal) backslashes can only appear when escaped
+# by a backslash. When internationalized, UTF-8 strings are also permitted except
+# the ASCII characters that are not previously permitted (see above).
+# QUOTED_LOCAL_PART_ADDR = re.compile(r"^\"((?:[\u0020-\u0021\u0023-\u005B\u005D-\u007E]|\\[\u0020-\u007E])*)\"@(.*)")
+QTEXT_INTL = re.compile(r"[\u0020-\u007E\u0080-\U0010FFFF]")
+
+# Length constants
+# RFC 3696 + errata 1003 + errata 1690 (https://www.rfc-editor.org/errata_search.php?rfc=3696&eid=1690)
+# explains the maximum length of an email address is 254 octets.
+EMAIL_MAX_LENGTH = 254
+LOCAL_PART_MAX_LENGTH = 64
+DNS_LABEL_LENGTH_LIMIT = 63  # in "octets", RFC 1035 2.3.1
+DOMAIN_MAX_LENGTH = 253  # in "octets" as transmitted, RFC 1035 2.3.4 and RFC 5321 4.5.3.1.2, and see https://stackoverflow.com/questions/32290167/what-is-the-maximum-length-of-a-dns-name
+
+# RFC 2142
+CASE_INSENSITIVE_MAILBOX_NAMES = [
+    'info', 'marketing', 'sales', 'support',  # section 3
+    'abuse', 'noc', 'security',  # section 4
+    'postmaster', 'hostmaster', 'usenet', 'news', 'webmaster', 'www', 'uucp', 'ftp',  # section 5
+]