[3.11] gh-102507 Remove invisible pagebreak characters (GH-102531) (#108266)

gh-102507 Remove invisible pagebreak characters (GH-102531)
(cherry picked from commit b097925)

Co-authored-by: JosephSBoyle <[email protected]>
Co-authored-by: AlexWaygood <[email protected]>

Author: 3 people

Lib/email/__init__.py

@@ -25,7 +25,6 @@
     ]
 
 
-
 # Some convenience routines.  Don't import Parser and Message as side-effects
 # of importing email since those cascadingly import most of the rest of the
 # email package.

Lib/email/base64mime.py

@@ -45,7 +45,6 @@
 MISC_LEN = 7
 
 
-
 # Helpers
 def header_length(bytearray):
     """Return the length of s when it is encoded with base64."""
@@ -57,7 +56,6 @@ def header_length(bytearray):
     return n
 
 
-
 def header_encode(header_bytes, charset='iso-8859-1'):
     """Encode a single header line with Base64 encoding in a given charset.
 
@@ -72,7 +70,6 @@ def header_encode(header_bytes, charset='iso-8859-1'):
     return '=?%s?b?%s?=' % (charset, encoded)
 
 
-
 def body_encode(s, maxlinelen=76, eol=NL):
     r"""Encode a string with base64.
 
@@ -98,7 +95,6 @@ def body_encode(s, maxlinelen=76, eol=NL):
     return EMPTYSTRING.join(encvec)
 
 
-
 def decode(string):
     """Decode a raw base64 string, returning a bytes object.
 

Lib/email/charset.py

@@ -18,7 +18,6 @@
 from email.encoders import encode_7or8bit
 
 
-
 # Flags for types of header encodings
 QP          = 1 # Quoted-Printable
 BASE64      = 2 # Base64
@@ -32,7 +31,6 @@
 EMPTYSTRING = ''
 
 
-
 # Defaults
 CHARSETS = {
     # input        header enc  body enc output conv
@@ -104,7 +102,6 @@
     }
 
 
-
 # Convenience functions for extending the above mappings
 def add_charset(charset, header_enc=None, body_enc=None, output_charset=None):
     """Add character set properties to the global registry.
@@ -153,7 +150,6 @@ def add_codec(charset, codecname):
     CODEC_MAP[charset] = codecname
 
 
-
 # Convenience function for encoding strings, taking into account
 # that they might be unknown-8bit (ie: have surrogate-escaped bytes)
 def _encode(string, codec):
@@ -163,7 +159,6 @@ def _encode(string, codec):
         return string.encode(codec)
 
 
-
 class Charset:
     """Map character sets to their email properties.
 

Lib/email/encoders.py

@@ -16,7 +16,6 @@
 from quopri import encodestring as _encodestring
 
 
-
 def _qencode(s):
     enc = _encodestring(s, quotetabs=True)
     # Must encode spaces, which quopri.encodestring() doesn't do
@@ -34,7 +33,6 @@ def encode_base64(msg):
     msg['Content-Transfer-Encoding'] = 'base64'
 
 
-
 def encode_quopri(msg):
     """Encode the message's payload in quoted-printable.
 
@@ -46,7 +44,6 @@ def encode_quopri(msg):
     msg['Content-Transfer-Encoding'] = 'quoted-printable'
 
 
-
 def encode_7or8bit(msg):
     """Set the Content-Transfer-Encoding header to 7bit or 8bit."""
     orig = msg.get_payload(decode=True)
@@ -64,6 +61,5 @@ def encode_7or8bit(msg):
         msg['Content-Transfer-Encoding'] = '7bit'
 
 
-
 def encode_noop(msg):
     """Do nothing."""

Lib/email/feedparser.py

@@ -41,7 +41,6 @@
 NeedMoreData = object()
 
 
-
 class BufferedSubFile(object):
     """A file-ish object that can have new data loaded into it.
 
@@ -132,7 +131,6 @@ def __next__(self):
         return line
 
 
-
 class FeedParser:
     """A feed-style parser of email."""
 

Lib/email/generator.py

@@ -22,7 +22,6 @@
 fcre = re.compile(r'^From ', re.MULTILINE)
 
 
-
 class Generator:
     """Generates output from a Message object tree.
 
@@ -392,7 +391,7 @@ def _make_boundary(cls, text=None):
     def _compile_re(cls, s, flags):
         return re.compile(s, flags)
 
-
+
 class BytesGenerator(Generator):
     """Generates a bytes version of a Message object tree.
 
@@ -443,7 +442,6 @@ def _compile_re(cls, s, flags):
         return re.compile(s.encode('ascii'), flags)
 
 
-
 _FMT = '[Non-text (%(type)s) part of message omitted, filename %(filename)s]'
 
 class DecodedGenerator(Generator):
@@ -503,7 +501,6 @@ def _dispatch(self, msg):
                     }, file=self)
 
 
-
 # Helper used by Generator._make_boundary
 _width = len(repr(sys.maxsize-1))
 _fmt = '%%0%dd' % _width

Lib/email/header.py

@@ -52,12 +52,10 @@
 _embedded_header = re.compile(r'\n[^ \t]+:')
 
 
-
 # Helpers
 _max_append = email.quoprimime._max_append
 
 
-
 def decode_header(header):
     """Decode a message header value without converting charset.
 
@@ -152,7 +150,6 @@ def decode_header(header):
     return collapsed
 
 
-
 def make_header(decoded_seq, maxlinelen=None, header_name=None,
                 continuation_ws=' '):
     """Create a Header from a sequence of pairs as returned by decode_header()
@@ -175,7 +172,6 @@ def make_header(decoded_seq, maxlinelen=None, header_name=None,
     return h
 
 
-
 class Header:
     def __init__(self, s=None, charset=None,
                  maxlinelen=None, header_name=None,
@@ -409,7 +405,6 @@ def _normalize(self):
         self._chunks = chunks
 
 
-
 class _ValueFormatter:
     def __init__(self, headerlen, maxlen, continuation_ws, splitchars):
         self._maxlen = maxlen

Lib/email/iterators.py

@@ -15,7 +15,6 @@
 from io import StringIO
 
 
-
 # This function will become a method of the Message class
 def walk(self):
     """Walk over the message tree, yielding each subpart.
@@ -29,7 +28,6 @@ def walk(self):
             yield from subpart.walk()
 
 
-
 # These two functions are imported into the Iterators.py interface module.
 def body_line_iterator(msg, decode=False):
     """Iterate over the parts, returning string payloads line-by-line.
@@ -55,7 +53,6 @@ def typed_subpart_iterator(msg, maintype='text', subtype=None):
                 yield subpart
 
 
-
 def _structure(msg, fp=None, level=0, include_default=False):
     """A handy debugging aid"""
     if fp is None:

Lib/email/mime/base.py

@@ -11,7 +11,6 @@
 from email import message
 
 
-
 class MIMEBase(message.Message):
     """Base class for MIME specializations."""
 

Lib/email/mime/message.py

@@ -10,7 +10,6 @@
 from email.mime.nonmultipart import MIMENonMultipart
 
 
-
 class MIMEMessage(MIMENonMultipart):
     """Class representing message/* MIME documents."""