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The parsing methods defined in this module implement various email related
parsing rules.  Principal among them is RFC 5322, which is the followon
to RFC 2822 and primarily a clarification of the former.  It also implements
RFC 2047 encoded word decoding.

RFC 5322 goes to considerable trouble to maintain backward compatibility with
RFC 822 in the parse phase, while cleaning up the structure on the generation
phase.  This parser supports correct RFC 5322 generation by tagging white space
as folding white space only when folding is allowed in the non-obsolete rule
sets.  Actually, the parser is even more generous when accepting input than RFC
5322 mandates, following the spirit of Postel's Law, which RFC 5322 encourages.
Where possible deviations from the standard are annotated on the 'defects'
attribute of tokens that deviate.

The general structure of the parser follows RFC 5322, and uses its terminology
where there is a direct correspondence.  Where the implementation requires a
somewhat different structure than that used by the formal grammar, new terms
that mimic the closest existing terms are used.  Thus, it really helps to have
a copy of RFC 5322 handy when studying this code.

Input to the parser is a string that has already been unfolded according to
RFC 5322 rules.  According to the RFC this unfolding is the very first step, and
this parser leaves the unfolding step to a higher level message parser, which
will have already detected the line breaks that need unfolding while
determining the beginning and end of each header.

The output of the parser is a TokenList object, which is a list subclass.  A
TokenList is a recursive data structure.  The terminal nodes of the structure
are Terminal objects, which are subclasses of str.  These do not correspond
directly to terminal objects in the formal grammar, but are instead more
practical higher level combinations of true terminals.

All TokenList and Terminal objects have a 'value' attribute, which produces the
semantically meaningful value of that part of the parse subtree.  The value of
all whitespace tokens (no matter how many sub-tokens they may contain) is a
single space, as per the RFC rules.  This includes 'CFWS', which is herein
included in the general class of whitespace tokens.  There is one exception to
the rule that whitespace tokens are collapsed into single spaces in values: in
the value of a 'bare-quoted-string' (a quoted-string with no leading or
trailing whitespace), any whitespace that appeared between the quotation marks
is preserved in the returned value.  Note that in all Terminal strings quoted
pairs are turned into their unquoted values.

All TokenList and Terminal objects also have a string value, which attempts to
be a "canonical" representation of the RFC-compliant form of the substring that
produced the parsed subtree, including minimal use of quoted pair quoting.
Whitespace runs are not collapsed.

Comment tokens also have a 'content' attribute providing the string found
between the parens (including any nested comments) with whitespace preserved.

All TokenList and Terminal objects have a 'defects' attribute which is a
possibly empty list all of the defects found while creating the token.  Defects
may appear on any token in the tree, and a composite list of all defects in the
subtree is available through the 'all_defects' attribute of any node.  (For
Terminal notes x.defects == x.all_defects.)

Each object in a parse tree is called a 'token', and each has a 'token_type'
attribute that gives the name from the RFC 5322 grammar that it represents.
Not all RFC 5322 nodes are produced, and there is one non-RFC 5322 node that
may be produced: 'ptext'.  A 'ptext' is a string of printable ascii characters.
It is returned in place of lists of (ctext/quoted-pair) and
(qtext/quoted-pair).

XXX: provide complete list of token types.
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×ÒVÔ:Ø8ñ:ô:ñ	;ô	;ð	;ð	;ð	;ð;ð;rcól—t|d¦«^}}g}d}d}tt|¦«¦«D]D}||dkr
|rd}d}nd}Œ|rd}n|||vrn!| ||¦«ŒE|dz}d |¦«d ||d…g|z¦«|fS)akScan printables/quoted-pairs until endchars and return unquoted ptext.

    This function turns a run of qcontent, ccontent-without-comments, or
    dtext-with-quoted-printables into a single string by unquoting any
    quoted printables.  It returns the string, the remaining value, and
    a flag that is True iff there were any quoted printables decoded.

    rçFrTr'N)Ú
_wsp_splitterÚrangerèr—r0)rÚendcharsÚfragmentÚ	remainderÚvcharsÚescapeÚhad_qpÚposs        rÚ_get_ptext_to_endcharsrÔðsç€õ)¨°Ñ2Ô2Ð€HˆyØ
€FØ
€FØ
€FÝ•S˜‘]”]Ñ#Ô#ððˆØCŒ=˜DÒ Ð Øð
ØØàØØð	ØˆFˆFØ
cŒ]˜hÐ
&Ð
&ØˆEØ
Š
h˜s”mÑ$Ô$Ð$Ð$àA‰gˆØ
7Š76‰?Œ?˜BŸGšG X¨c¨d¨d¤^Ð$4°yÑ$@ÑAÔAÀ6ÐIÐIrcóœ—| ¦«}t|dt|¦«t|¦«z
…d¦«}||fS)zãFWS = 1*WSP

    This isn't the RFC definition.  We're using fws to represent tokens where
    folding can be done, but when we are parsing the *un*folding has already
    been done so we don't need to watch out for CRLF.

    NÚfws)r)r´rè)rÚnewvaluerÖs   rÚget_fwsrØsF€ð|Š|‰~Œ~€HÝ
˜UÐ#<¥C¨¡J¤Js°8©}¬}Ñ$<Ð#<Ô=¸uÑ
EÔ
E€CØˆ=ÐrÚvtextcóÐ—t¦«}| d¦«s'tjd |¦«¦«‚|dd… dd¦«^}}||dd…kr'tjd |¦«¦«‚d |¦«}t|¦«dkrW|dtvrH|dtvr9| 	d	¦«dkr | dd¦«^}}|dz|z}t| ¦«¦«dkr,|j
 tjd
¦«¦«||_
d |¦«}	tjd|zdz¦«\}}}	}
n<#t t"f$r(t%d |j
¦«¦«‚wxYw||_|	|_|j
 |
¦«|r”|dt,vr(t/|¦«\}}| |¦«Œ9t1|d¦«^}}t3||¦«}
t5|
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¦«d |¦«}|°”|r;|dt,vr,|j
 tjd¦«¦«||fS)
zE encoded-word = "=?" charset "?" encoding "?" encoded-text "?="

    ú=?z"expected encoded word but found {}rßNz?=rçr'rú?zwhitespace inside encoded wordz!encoded word format invalid: '{}'z.missing trailing whitespace after encoded-word)r‰Ú
startswithrÚHeaderParseErrorr6rr0rèrÚcountr!r—rsr‹Ú_ewrwÚ
ValueErrorÚKeyErrorrÁrŒrrIÚWSPrØrËr¹rÉ)rÚ
terminal_typeÚewrBrÏÚremstrÚrestrŒrŒrr!rKÚcharsrÙs              rÚget_encoded_wordrés€õ
‰Œ€BØ×Ò˜DÑ!Ô!ð@ÝÔ%Ø0×7Ò7¸Ñ>Ô>ñ@ô@ð	@à˜A˜B˜B”i—o’o d¨AÑ.Ô.€O€Cˆ)Ø
ˆeABBŒiÒÐÝÔ%Ø0×7Ò7¸Ñ>Ô>ñ@ô@ð	@à
WŠWYÑ
Ô
€FÝˆF‰ŒaŠˆØˆqŒ	•YÐÐØˆqŒ	•YÐÐØ	Š	#‰Œ˜ÒÐà!Ÿ<š<¨¨aÑ0Ô0ÐˆˆyØD‰j˜4ÑˆÝ
ˆ39Š9‰;Œ;ÑÔ˜!ÒÐØ
Œ
×Ò&Ô4Ø,ñ.ô.ñ	/ô	/ð	/à
€B„FØGŠGIÑÔ€Eð@Ý'*¤z°$¸±*¸tÑ2CÑ'DÔ'DÑ$ˆˆgt˜W˜WøÝÐ!ð@ð@ð@ÝØ/×6Ò6°r´vÑ>Ô>ñ@ô@ð	@ð@øøøð€B„JØ€B„GØ„J×ÒgÑÔÐØ
ð	"ØŒ7•cˆ>ˆ>Ý! $™-œ-‰KˆE4ØIŠIeÑÔÐØÝ)¨$°Ñ2Ô2Ðˆ	Ý˜e ]Ñ3Ô3ˆÝ˜ÑÔÐØ
	Š	%ÑÔÐØwŠwyÑ!Ô!ˆðð	"ð
ð?q”¥Ð$Ð$Ø
Œ
×Ò&Ô4Ø<ñ>ô>ñ	?ô	?ð	?à
ˆuˆ9ÐsÆ
F-Æ-9G&có¦—t¦«}|r¿|dtvr(t|¦«\}}| |¦«Œ:d}| d¦«rà	t|d¦«\}}d}t
|¦«dkr?|djdkr.|j tj
d¦«¦«d}|r=t
|¦«d	kr*|d
jdkrt|dd¦«|d<| |¦«Œ#t$rd}Yntj
$rYnwxYwt|d	¦«^}}|r1t |¦«r| d¦«^}}t%|d¦«}t'|¦«| |¦«d |¦«}|°¿|S)
aOunstructured = (*([FWS] vchar) *WSP) / obs-unstruct
       obs-unstruct = *((*LF *CR *(obs-utext) *LF *CR)) / FWS)
       obs-utext = %d0 / obs-NO-WS-CTL / LF / CR

       obs-NO-WS-CTL is control characters except WSP/CR/LF.

    So, basically, we have printable runs, plus control characters or nulls in
    the obsolete syntax, separated by whitespace.  Since RFC 2047 uses the
    obsolete syntax in its specification, but requires whitespace on either
    side of the encoded words, I can see no reason to need to separate the
    non-printable-non-whitespace from the printable runs if they occur, so we
    parse this into xtext tokens separated by WSP tokens.

    Because an 'unstructured' value must by definition constitute the entire
    value, this 'get' routine does not return a remaining value, only the
    parsed TokenList.

    rTrÛÚutextrërÖz&missing whitespace before encoded wordFrçéþÿÿÿrŠr')rtrãrØr—rÝrérèr\r!rrsr½rÁrÞrËÚrfc2047_matcherÚsearchÚ	partitionr¹rÉr0)rrurKÚvalid_ewÚhave_wsrBrÏrÙs        rÚget_unstructuredròKs$€õ.)Ñ*Ô*€LØ
ñ(#ØŒ8•sˆ?ˆ?Ý" 5™>œ>‰LˆE5Ø×Ò Ñ&Ô&Ð&ØØˆØ×Ò˜DÑ!Ô!ð	ð
Ý/°°wÑ?Ô?‘uðÝ|Ñ$Ô$ qÒ(Ð(Ø# BÔ'Ô2°eÒ;Ð;Ø$Ô,×3Ò3µFÔ4NØDñ5Fô5FñGôGðGà"'˜Øð5s <Ñ0Ô0°1Ò4Ð4Ø# BÔ'Ô2°nÒDÐDÝ+?Ø(¨Ô,¨eñ,5ô,5˜ RÑ(à×#Ò# EÑ*Ô*Ð*Ùøõ%#ð
!ð
!ð
!Ø ÝÔ*ð
ð
ð
ðð
øøøõ"(¨¨qÑ1Ô1ˆˆˆiðð	4×.Ò.¨sÑ3Ô3ð	4Ø#Ÿošo¨dÑ3Ô3ˆOˆC)Ý˜c 7Ñ+Ô+ˆÝ˜ÑÔÐØ×Ò˜EÑ"Ô"Ð"Ø—’˜	Ñ"Ô"ˆðQñ(#ðRÐsÁ!DÄD=Ä,D=Ä<D=cóp—t|d¦«\}}}t|d¦«}t|¦«||fS)actext = <printable ascii except \ ( )>

    This is not the RFC ctext, since we are handling nested comments in comment
    and unquoting quoted-pairs here.  We allow anything except the '()'
    characters, but if we find any ASCII other than the RFC defined printable
    ASCII, a NonPrintableDefect is added to the token's defects list.  Since
    quoted pairs are converted to their unquoted values, what is returned is
    a 'ptext' token.  In this case it is a WhiteSpaceTerminal, so it's value
    is ' '.

    z()rH)rÔr´rÉ©rrHÚ_s   rÚget_qp_ctextröŽs@€õ-¨U°DÑ9Ô9O€Eˆ5!Ý˜u gÑ.Ô.€EÝEÑÔÐØ%ˆ<Ðrcóp—t|d¦«\}}}t|d¦«}t|¦«||fS)aoqcontent = qtext / quoted-pair

    We allow anything except the DQUOTE character, but if we find any ASCII
    other than the RFC defined printable ASCII, a NonPrintableDefect is
    added to the token's defects list.  Any quoted pairs are converted to their
    unquoted values, so what is returned is a 'ptext' token.  In this case it
    is a ValueTerminal.

    rrH)rÔr¹rÉrôs   rÚget_qcontentrøŸs@€õ-¨U°CÑ8Ô8O€Eˆ5!Ý˜% Ñ)Ô)€EÝEÑÔÐØ%ˆ<Ðrcó—t|¦«}|s'tjd |¦«¦«‚| ¦«}|t|¦«d…}t
|d¦«}t|¦«||fS)z®atext = <matches _atext_matcher>

    We allow any non-ATOM_ENDS in atext, but add an InvalidATextDefect to
    the token's defects list if we find non-atext characters.
    zexpected atext but found '{}'NÚatext)Ú_non_atom_end_matcherrrÞr6rÅrèr¹rÉ)rÚmrús   rÚ	get_atextrý®s‡€õ	˜eÑ$Ô$€AØð;ÝÔ%Ø+×2Ò2°5Ñ9Ô9ñ;ô;ð	;à
GŠG‰IŒI€EØ•#e‘*”*++Ô€EÝ˜% Ñ)Ô)€EÝEÑÔÐØ%ˆ<Ðrcóâ—|ddkr'tjd |¦«¦«‚t¦«}|dd…}|r3|ddkr't	|¦«\}}| |¦«|r/|ddkr"|dtvrt|¦«\}}nÜ|dd…dkr¼d}	t|¦«\}}|j	 tj
d	¦«¦«d
}n'#tj$rt	|¦«\}}YnwxYw|rNt|¦«dkr;|djdkr*|d
jdkrt|dd¦«|d<nt	|¦«\}}| |¦«|r
|ddk°"|s0|j	 tj
d¦«¦«||fS||dd…fS)zíbare-quoted-string = DQUOTE *([FWS] qcontent) [FWS] DQUOTE

    A quoted-string without the leading or trailing white space.  Its
    value is the text between the quote marks, with whitespace
    preserved and quoted pairs decoded.
    rrzexpected '"' but found '{}'rçNrßrÛFz!encoded word inside quoted stringTrërÖrìrŠz"end of header inside quoted string)rrÞr6ržrør—rãrØrér!rsrèr\r½)rÚbare_quoted_stringrKrðs    rÚget_bare_quoted_stringr¾sE€ð
ˆQ„x3‚€ÝÔ%Ø*×1Ò1°%Ñ8Ô8ñ:ô:ð	:å)Ñ+Ô+ÐØ!""ŒI€EØð)q”˜S’Ý# EÑ*Ô*‰ˆˆuØ×!Ò! %Ñ(Ô(Ð(Ø
ñ)E˜!”H ’O‘OØŒ8•sˆ?ˆ?Ý" 5™>œ>‰LˆE55Ø
2A2ŒY˜$Ò
Ð
ØˆHð
3Ý/°Ñ6Ô6‘uØ"Ô*×1Ò1µ&Ô2LØ7ñ39ô39ñ:ô:ð:àøÝÔ*ð
3ð
3ð
3Ý+¨EÑ2Ô2‘uuuð
3øøøðð
7CÐ 2Ñ3Ô3°aÒ7Ð7Ø& rÔ*Ô5¸Ò>Ð>Ø*¨2Ô.Ô9¸^ÒKÐKÝ-AØ*¨2Ô.°ñ.7ô.7Ð& rÑ*øõ(¨Ñ.Ô.‰LˆE5Ø×!Ò! %Ñ(Ô(Ð(ð+ð)E˜!”H ’O‘Oð,ð)ØÔ"×)Ò)&Ô*DØ0ñ+2ô+2ñ	3ô	3ð	3à! 5Ð(Ð(Ø˜u Q R RœyÐ(Ð(sÃADÄ!D)Ä(D)có —|r3|ddkr'tjd |¦«¦«‚t¦«}|dd…}|r‚|ddkrv|dtvrt|¦«\}}n1|ddkrt
|¦«\}}nt|¦«\}}| |¦«|r|ddk°v|s0|j	 tj
d¦«¦«||fS||dd…fS)z¬comment = "(" *([FWS] ccontent) [FWS] ")"
       ccontent = ctext / quoted-pair / comment

    We handle nested comments here, and quoted-pair in our qp-ctext routine.
    rrzexpected '(' but found '{}'rçNr©zend of header inside comment)rrÞr6r¥rãrØÚget_commentrör—r!rs)rrprKs   rrrés2€ð
ð9q”˜S’ÝÔ%Ø)×0Ò0°Ñ7Ô7ñ9ô9ð	9å‰iŒi€GØ!""ŒI€EØ
ðE˜!”H ’OOØŒ8•sˆ?ˆ?Ý" 5™>œ>‰LˆE55Ø
1ŒX˜Š_ˆ_Ý& uÑ-Ô-‰LˆE55å'¨Ñ.Ô.‰LˆE5ØŠuÑÔÐððE˜!”H ’OOððØŒ×ÒvÔ9Ø*ñ ,ô ,ñ	-ô	-ð	-à˜ˆ~ÐØE˜!˜"˜"”IÐÐrcóü—t¦«}|ri|dtvrZ|dtvrt|¦«\}}nt	|¦«\}}| |¦«|r|dtv°Z||fS)z,CFWS = (1*([FWS] comment) [FWS]) / FWS

    r)r€ÚCFWS_LEADERrãrØrr—)rrrKs   rÚget_cfwsrsˆ€õ‰:Œ:€DØ
ðE˜!”H¥Ð+Ð+ØŒ8•sˆ?ˆ?Ý" 5™>œ>‰LˆE55å& uÑ-Ô-‰LˆE5ØŠEÑÔÐððE˜!”H¥Ð+Ð+ðˆ;ÐrcóT—t¦«}|r6|dtvr't|¦«\}}| |¦«t	|¦«\}}| |¦«|r6|dtvr't|¦«\}}| |¦«||fS)zÙquoted-string = [CFWS] <bare-quoted-string> [CFWS]

    'bare-quoted-string' is an intermediate class defined by this
    parser and not by the RFC grammar.  It is the quoted string
    without any attached CFWS.
    r)rrrr—r)rÚ
quoted_stringrKs   rÚget_quoted_stringrs¯€õ!‘N”N€MØð$q”[Ð(Ð(Ý ‘”‰ˆˆuØ×Ò˜UÑ#Ô#Ð#Ý)¨%Ñ0Ô0L€Eˆ5Ø×Ò˜ÑÔÐØð$q”[Ð(Ð(Ý ‘”‰ˆˆuØ×Ò˜UÑ#Ô#Ð#Ø˜%ÐÐrcód—t¦«}|r6|dtvr't|¦«\}}| |¦«|r6|dtvr'tjd |¦«¦«‚| d¦«r;	t|¦«\}}n9#t
j$rt|¦«\}}YnwxYwt|¦«\}}| |¦«|r6|dtvr't|¦«\}}| |¦«||fS)zPatom = [CFWS] 1*atext [CFWS]

    An atom could be an rfc2047 encoded word.
    rzexpected atom but found '{}'rÛ)rƒrrr—Ú	ATOM_ENDSrrÞr6rÝrérý)rr„rKs   rÚget_atomr!sI€õ
‰6Œ6€DØðq”[Ð(Ð(Ý ‘”‰ˆˆuØŠEÑÔÐØð:q”YÐ&Ð&ÝÔ%Ø*×1Ò1°%Ñ8Ô8ñ:ô:ð	:à×Ò˜ÑÔð(ð	,Ý+¨EÑ2Ô2‰LˆE55øÝÔ&ð	,ð	,ð	,õ% UÑ+Ô+‰LˆE555ð	,øøøõ
! Ñ'Ô'‰ˆˆuØ‡K‚KÑÔÐØðq”[Ð(Ð(Ý ‘”‰ˆˆuØŠEÑÔÐØˆ;ÐsÂB(Â(!CÃCcóþ—t¦«}|r|dtvr'tjd |¦«¦«‚|ry|dtvrjt|¦«\}}| |¦«|r0|ddkr$| t¦«|dd…}|r|dtv°j|dtur*tjd d|z¦«¦«‚||fS)z( dot-text = 1*atext *("." 1*atext)

    rz8expected atom at a start of dot-atom-text but found '{}'r	rçNrëz4expected atom at end of dot-atom-text but found '{}')rr
rrÞr6rýr—r>)rÚ
dot_atom_textrKs   rÚget_dot_atom_textr<s€õ ‘M”M€MØð:E˜!”H¥	Ð)Ð)ÝÔ%ð'+ß+1ª6°%©=¬=ñ:ô:ð	:à
ðE˜!”H¥IÐ-Ð-Ý  Ñ'Ô'‰ˆˆuØ×Ò˜UÑ#Ô#Ð#Øð	U˜1”X ’__Ø× Ò ¥Ñ%Ô%Ð%Ø˜!˜"˜"”IˆEððE˜!”H¥IÐ-Ð-ðRÔCÐÐÝÔ%ð'ß#šV C¨¡IÑ.Ô.ñ0ô0ð	0à˜%ÐÐrcóð—t¦«}|dtvr't|¦«\}}| |¦«| d¦«r;	t|¦«\}}n9#tj$rt|¦«\}}YnwxYwt|¦«\}}| |¦«|r6|dtvr't|¦«\}}| |¦«||fS)z† dot-atom = [CFWS] dot-atom-text [CFWS]

    Any place we can have a dot atom, we could instead have an rfc2047 encoded
    word.
    rrÛ)	rrrr—rÝrérrÞr)rÚdot_atomrKs   rÚget_dot_atomrOs€õ‰yŒy€HØˆQ„x•;ÐÐÝ ‘”‰ˆˆuØŠ˜ÑÔÐØ×Ò˜ÑÔð0ð	4Ý+¨EÑ2Ô2‰LˆE55øÝÔ&ð	4ð	4ð	4õ-¨UÑ3Ô3‰LˆE555ð	4øøøõ
)¨Ñ/Ô/‰ˆˆuØ‡O‚OEÑÔÐØðq”[Ð(Ð(Ý ‘”‰ˆˆuØŠ˜ÑÔÐØUˆ?ÐsÁA.Á.!BÂBcó`—|dtvrt|¦«\}}nd}|stjd¦«‚|ddkrt	|¦«\}}nH|dt
vr'tjd |¦«¦«‚t|¦«\}}||g|dd…<||fS)aˆword = atom / quoted-string

    Either atom or quoted-string may start with CFWS.  We have to peel off this
    CFWS first to determine which type of word to parse.  Afterward we splice
    the leading CFWS, if any, into the parsed sub-token.

    If neither an atom or a quoted-string is found before the next special, a
    HeaderParseError is raised.

    The token returned is either an Atom or a QuotedString, as appropriate.
    This means the 'word' level of the formal grammar is not represented in the
    parse tree; this is because having that extra layer when manipulating the
    parse tree is more confusing than it is helpful.

    rNz5Expected 'atom' or 'quoted-string' but found nothing.rz1Expected 'atom' or 'quoted-string' but found '{}')rrrrÞrÚSPECIALSr6r)rÚleaderrKs   rÚget_wordrhsÔ€ð 
ˆQ„x•;ÐÐÝ  ™œ‰
ˆàˆØðEÝÔ%ØCñEôEð	EàˆQ„x‚}€}Ý(¨Ñ/Ô/‰ˆˆuˆuØ	ˆqŒ•XÐ	Ð	ÝÔ%ð'7ß7=²v¸e±}´}ñFôFð	Fõ  ‘”‰ˆˆuØ
ÐØHˆˆbˆqˆb‰	Ø%ˆ<Ðrcó—t¦«}	t|¦«\}}| |¦«nA#tj$r/|j tjd¦«¦«YnwxYw|r
|dtvrû|ddkrQ| t¦«|j tj	d¦«¦«|dd…}n	t|¦«\}}nd#tj$rR|dtvr?t|¦«\}}|j tj	d¦«¦«n‚YnwxYw| |¦«|r|dtv°û||fS)a÷ phrase = 1*word / obs-phrase
        obs-phrase = word *(word / "." / CFWS)

    This means a phrase can be a sequence of words, periods, and CFWS in any
    order as long as it starts with at least one word.  If anything other than
    words is detected, an ObsoleteHeaderDefect is added to the token's defect
    list.  We also accept a phrase that starts with CFWS followed by a dot;
    this is registered as an InvalidHeaderDefect, since it is not supported by
    even the obsolete grammar.

    zphrase does not start with wordrr	zperiod in 'phrase'rçNzcomment found without atom)rxrr—rrÞr!rsÚPHRASE_ENDSr>ÚObsoleteHeaderDefectrr)rryrKs   rÚ
get_phraserŠsÆ€õ‰XŒX€Fð0Ý ‘”‰ˆˆuØ
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eÑÔÐÐøÝÔ"ð0ð0ð0ØŒ×ÒfÔ8Ø-ñ/ô/ñ	0ô	0ð	0ð	0ð	0ð0øøøðñ!E˜!”H¥KÐ/Ð/ØŒ8SŠ=ˆ=ØMŠM#ÑÔÐØŒN×!Ò!¥&Ô"=Ø$ñ#&ô#&ñ
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MŠM˜%Ñ Ô Ð ð!ð!E˜!”H¥KÐ/Ð/ð"5ˆ=Ðs"'8¸;A6Á5A6Ã)C<Ã<AEÅEcóô—t¦«}d}|dtvrt|¦«\}}|s'tjd |¦«¦«‚	t
|¦«\}}nh#tj$rV	t|¦«\}}n?#tj$r-|ddkr|dtvr‚t¦«}YnwxYwYnwxYw||g|dd…<| 
|¦«|r¦|ddks|dtvr‹tt|¦«|z¦«\}}|j
dkr-|j 
tjd¦«¦«n,|j 
tjd¦«¦«||d<	|j d¦«n<#t&$r/|j 
tjd	¦«¦«YnwxYw||fS)
z= local-part = dot-atom / quoted-string / obs-local-part

    Nrz"expected local-part but found '{}'rúinvalid-obs-local-partz<local-part is not dot-atom, quoted-string, or obs-local-partz,local-part is not a dot-atom (contains CFWS)Úasciiz)local-part contains non-ASCII characters))r:rrrrÞr6rrrrr—Úget_obs_local_partrr\r!rsrrÚencoderyÚNonASCIILocalPartDefect)rrírrKÚobs_local_parts     rÚget_local_partr!°sg€õ‘”€JØ
€FØˆQ„x•;ÐÐÝ  ™œ‰
ˆØð@ÝÔ%Ø0×7Ò7¸Ñ>Ô>ñ@ô@ð	@ð Ý# EÑ*Ô*‰ˆˆuˆuøÝÔ"ð ð ð ð	 Ý# E™?œ?‰LˆE55øÝÔ&ð	 ð	 ð	 ØQŒx˜4ÒÐ E¨!¤HµÐ$;Ð$;ØÝ‘K”KˆEˆEˆEð	 øøøøøð øøøðÐØHˆˆbˆqˆb‰	Ø×ÒeÑÔÐØð'%˜”(˜D’.. E¨!¤HµKÐ$?Ð$?Ý 2µ3°z±?´?ÀUÑ3JÑ KÔ KÑˆ˜ØÔ$Ð(@Ò@Ð@ØÔ×%Ò%¥fÔ&@ØNñ'Pô'Pñ
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CÃCÃCÆF:Æ:6G3Ç2G3có—t¦«}d}|r«|ddks|dtvr|ddkrU|r,|j t	jd¦«¦«| t¦«d}|dd…}Œ€|ddkrb| t|dd	¦«¦«|dd…}|j t	jd
¦«¦«d}Œî|r=|djdkr,|j t	jd
¦«¦«	t|¦«\}}d}n7#tj
$r%|dtvr‚t|¦«\}}YnwxYw| |¦«|r|ddk°|dtv°|djdks"|djdkr=|djdkr,|j t	jd¦«¦«|djdks"|djdkr=|djdkr,|j t	jd¦«¦«|jrd|_||fS)z' obs-local-part = word *("." word)
    Frrr	zinvalid repeated '.'TrçNúmisplaced-specialz/'\' character outside of quoted-string/ccontentrër=zmissing '.' between wordsrz!Invalid leading '.' in local partrìz"Invalid trailing '.' in local partr)
r1rr!r—rrsr>r¹r\rrÞrr)rr Úlast_non_ws_was_dotrKs    rrr×sõ€õ"‘^”^€NØÐØ
ñ%U˜1”X˜t’^^ u¨Q¤xµ{Ð'BÑ'BØŒ8sŠ?ˆ?Ø"ð
-ØÔ&×-Ò-fÔ.HØ*ñ/,ô/,ñ-ô-ð-à×!Ò!¥#Ñ&Ô&Ð&Ø"&ÐØ˜!˜"˜"”IˆEØØ
1ŒXtŠ^ˆ^Ø×!Ò!¥-°°a´Ø0Cñ#Eô#Eñ
Fô
Fð
Fà˜!˜"˜"”IˆEØÔ"×)Ò)&Ô*DØBñ+Dô+Dñ
Eô
Eð
Eà"'ÐØØð	.˜n¨RÔ0Ô;¸uÒDÐDØÔ"×)Ò)&Ô*DØ+ñ+-ô+-ñ
.ô
.ð
.ð	+Ý# E™?œ?‰LˆE5Ø"'ÐÐøÝÔ&ð	+ð	+ð	+ØQŒx{Ð*Ð*ØÝ# E™?œ?‰LˆE555ð	+øøøð	×Ò˜eÑ$Ô$Ð$ð7ð%U˜1”X˜t’^‘^ u¨Q¤xµ{Ð'BÑ'Bð8	qÔÔ$¨Ò-Ð-Ø˜1ÔÔ(¨&Ò0Ð0Ø˜1ÔÔ(¨%Ò/Ð/ØÔ×%Ò%¥fÔ&@Ø/ñ'1ô'1ñ	2ô	2ð	2àrÔÔ%¨Ò.Ð.Ø˜2ÔÔ)¨6Ò1Ð1Ø˜2ÔÔ)¨5Ò0Ð0ØÔ×%Ò%¥fÔ&@Ø0ñ'2ô'2ñ	3ô	3ð	3àÔð=Ø$<ˆÔ!Ø˜5Ð Ð sÄ?EÅ1FÆFcóÌ—t|d¦«\}}}t|d¦«}|r,|j t	jd¦«¦«t
|¦«||fS)a dtext = <printable ascii except \ [ ]> / obs-dtext
        obs-dtext = obs-NO-WS-CTL / quoted-pair

    We allow anything except the excluded characters, but if we find any
    ASCII other than the RFC defined printable ASCII, a NonPrintableDefect is
    added to the token's defects list.  Quoted pairs are converted to their
    unquoted values, so what is returned is a ptext token, in this case a
    ValueTerminal.  If there were quoted-printables, an ObsoleteHeaderDefect is
    added to the returned token's defect list.

    z[]rHz(quoted printable found in domain-literal)rÔr¹r!r—rrrÉ)rrHrÒs   rÚ	get_dtextr&su€õ2°%¸Ñ>Ô>Ñ€Eˆ5&Ý˜% Ñ)Ô)€EØ
ð9Ø
Œ
×ÒVÔ8Ø6ñ8ô8ñ	9ô	9ð	9åEÑÔÐØ%ˆ<Ðrcó¢—|rdS| tjd¦«¦«| tdd¦«¦«dS)NFz"end of input inside domain-literalú]údomain-literal-endT)r—rrsr¹)rÚdomain_literals  rÚ_check_for_early_dl_endr+s]€ØðØˆuØ×Ò&Ô4Ø,ñ.ô.ñ/ô/ð/à×Ò-¨Ð-AÑBÔBÑCÔCÐCØˆ4rcóL—t¦«}|dtvr't|¦«\}}| |¦«|st	jd¦«‚|ddkr't	jd |¦«¦«‚|dd…}t||¦«r||fS| tdd¦«¦«|dtvr't|¦«\}}| |¦«t|¦«\}}| |¦«t||¦«r||fS|dtvr't|¦«\}}| |¦«t||¦«r||fS|ddkr't	jd	 |¦«¦«‚| tdd
¦«¦«|dd…}|r6|dtvr't|¦«\}}| |¦«||fS)zB domain-literal = [CFWS] "[" *([FWS] dtext) [FWS] "]" [CFWS]

    rzexpected domain-literalú[z6expected '[' at start of domain-literal but found '{}'rçNzdomain-literal-startr(z4expected ']' at end of domain-literal but found '{}'r))rErrr—rrÞr6r+r¹rãrØr&)rr*rKs   rÚget_domain_literalr."s6€õ#‘_”_€NØˆQ„x•;ÐÐÝ ‘”‰ˆˆuØ×Ò˜eÑ$Ô$Ð$ØðAÝÔ%Ð&?Ñ@Ô@Ð@ØˆQ„x3‚€ÝÔ%ð'!ß!'¢¨¡¤ñ0ô0ð	0à!""ŒI€EÝ˜u nÑ5Ô5ð%Ø˜uÐ$Ð$Ø×Ò-¨Ð-CÑDÔDÑEÔEÐEØˆQ„x•3€€Ý˜u‘~”~‰ˆˆuØ×Ò˜eÑ$Ô$Ð$Ý˜UÑ#Ô#L€Eˆ5Ø×Ò˜%Ñ Ô Ð Ý˜u nÑ5Ô5ð%Ø˜uÐ$Ð$ØˆQ„x•3€€Ý˜u‘~”~‰ˆˆuØ×Ò˜eÑ$Ô$Ð$Ý˜u nÑ5Ô5ð%Ø˜uÐ$Ð$ØˆQ„x3‚€ÝÔ%ð'!ß!'¢¨¡¤ñ0ô0ð	0à×Ò-¨Ð-AÑBÔBÑCÔCÐCØ!""ŒI€EØð%q”[Ð(Ð(Ý ‘”‰ˆˆuØ×Ò˜eÑ$Ô$Ð$Ø˜5Ð Ð rcó²—t¦«}d}|dtvrt|¦«\}}|s'tjd |¦«¦«‚|ddkr5t
|¦«\}}||g|dd…<| |¦«||fS	t|¦«\}}n'#tj$rt|¦«\}}YnwxYw|r |ddkrtjd¦«‚||g|dd…<| |¦«|r»|ddkr¯|j
 tjd¦«¦«|djd	kr
|d|dd…<|rc|ddkrW| t¦«t|d
d…¦«\}}| |¦«|r|ddk°W||fS)z] domain = dot-atom / domain-literal / obs-domain
        obs-domain = atom *("." atom))

    Nrzexpected domain but found '{}'r-r+zInvalid Domainr	z(domain is not a dot-atom (contains CFWS)rrç)rrrrrÞr6r.r—rrr!rr\r>)rrðrrKs    rÚ
get_domainr0Is€õ
‰XŒX€FØ
€FØˆQ„x•;ÐÐÝ  ™œ‰
ˆØð<ÝÔ%Ø,×3Ò3°EÑ:Ô:ñ<ô<ð	<àˆQ„x3‚€Ý)¨%Ñ0Ô0‰ˆˆuØÐØ˜ˆE"1"‰IØ
Š
eÑÔÐØuˆ}Ðð'Ý# EÑ*Ô*‰ˆˆuˆuøÝÔ"ð'ð'ð'Ý ‘”‰ˆˆuˆuˆuð'øøøàð8q”˜S’ÝÔ%Ð&6Ñ7Ô7Ð7Ø
ÐØHˆˆbˆqˆb‰	Ø
‡M‚M%ÑÔÐØð!q”˜S’ØŒ×ÒfÔ9Ø6ñ8ô8ñ	9ô	9ð	9à!Œ9Ô :Ò-Ð-Ø˜qœ	ˆF111‰IØð	!˜˜aœ Cš˜ØMŠM#ÑÔÐÝ# E¨!¨"¨"¤IÑ.Ô.‰LˆE5ØMŠM˜%Ñ Ô Ð ðð	!˜˜aœ Cš˜ð5ˆ=ÐsÂB0Â0!CÃCcó”—t¦«}t|¦«\}}| |¦«|r|ddkr0|j t	jd¦«¦«||fS| t
dd¦«¦«t|dd…¦«\}}| |¦«||fS)z( addr-spec = local-part "@" domain

    rr+z#addr-spec local part with no domainúaddress-at-symbolrçN)r#r!r—r!rrsr¹r0)rrõrKs   rÚ
get_addr_specr3osÕ€õ‘
”
€IÝ! %Ñ(Ô(L€Eˆ5Ø
×ÒUÑÔÐØð E˜!”H ’OOØÔ× Ò ¥Ô!;Ø1ñ"3ô"3ñ	4ô	4ð	4à˜%ÐÐØ
×Ò•] 3Ð(;Ñ<Ô<Ñ=Ô=Ð=Ý˜e A B BœiÑ(Ô(L€Eˆ5Ø
×ÒUÑÔÐØeÐÐrcóè—t¦«}|rŸ|ddks|dtvr„|dtvr(t|¦«\}}| |¦«n0|ddkr$| t¦«|dd…}|r|ddk°u|dtv°„|r|ddkr'tjd |¦«¦«‚| t¦«t|dd…¦«\}}| |¦«|rÌ|ddkrÀ| t¦«|dd…}|sn™|dtvr't|¦«\}}| |¦«|ddkrI| t¦«t|dd…¦«\}}| |¦«|r|ddk°À|stjd¦«‚|ddkr'tjd	 |¦«¦«‚| tdd
¦«¦«||dd…fS)zù obs-route = obs-domain-list ":"
        obs-domain-list = *(CFWS / ",") "@" domain *("," [CFWS] ["@" domain])

        Returns an obs-route token with the appropriate sub-tokens (that is,
        there is no obs-domain-list in the parse tree).
    rrÃrçNr+z(expected obs-route domain but found '{}'z%end of header while parsing obs-routeú:z4expected ':' marking end of obs-route but found '{}'zend-of-obs-route-marker)rrrr—Ú
ListSeparatorrrÞr6ÚRouteComponentMarkerr0r¹)rÚ	obs_routerKs   rÚ
get_obs_router9s€õ‘
”
€IØ
ðU˜1”X˜s’]] e¨A¤hµ+Ð&=Ð&=ØŒ8•{Ð"Ð"Ý# E™?œ?‰LˆE5Ø×Ò˜UÑ#Ô#Ð#Ð#Ø
1ŒX˜Š_ˆ_Ø×Ò]Ñ+Ô+Ð+Ø˜!˜"˜"”IˆEð
ðU˜1”X˜s’]] e¨A¤hµ+Ð&=Ð&=ððFE˜!”H ’OOÝÔ%Ø6×=Ò=¸eÑDÔDñFôFð	Fà
×ÒÕ)Ñ*Ô*Ð*Ý˜e A B BœiÑ(Ô(L€Eˆ5Ø
×ÒUÑÔÐØ
ð$E˜!”H˜c’MMØ×ÒÑ'Ô'Ð'Øabb”	ˆØð	ØØŒ8•{Ð"Ð"Ý# E™?œ?‰LˆE5Ø×Ò˜UÑ#Ô#Ð#ØŒ8sŠ?ˆ?Ø×ÒÕ1Ñ2Ô2Ð2Ý% e¨A¨B¨B¤iÑ0Ô0‰LˆE5Ø×Ò˜UÑ#Ô#Ð#ðð$E˜!”H˜c’MMððOÝÔ%Ð&MÑNÔNÐNØˆQ„x3‚€ÝÔ%ð('ß'-¢v¨e¡}¤}ñ6ô6ð	6à
×Ò•] 3Ð(AÑBÔBÑCÔCÐCØe˜A˜B˜B”iÐÐrcó&—t¦«}|dtvr't|¦«\}}| |¦«|r|ddkr't	jd |¦«¦«‚| tdd¦«¦«|dd…}|ddkr]| tdd¦«¦«|j t	j	d	¦«¦«|dd…}||fS	t|¦«\}}n¶#tj$r¤	t|¦«\}}|j t	jd
¦«¦«n:#tj$r(t	jd |¦«¦«‚wxYw| |¦«t|¦«\}}YnwxYw| |¦«|r|ddkr|dd…}n,|j t	j	d¦«¦«| tdd¦«¦«|r6|dtvr't|¦«\}}| |¦«||fS)
z‡ angle-addr = [CFWS] "<" addr-spec ">" [CFWS] / obs-angle-addr
        obs-angle-addr = [CFWS] "<" obs-route addr-spec ">" [CFWS]

    rú<z"expected angle-addr but found '{}'zangle-addr-startrçNú>zangle-addr-endznull addr-spec in angle-addrz*obsolete route specification in angle-addrz.expected addr-spec or obs-route but found '{}'z"missing trailing '>' on angle-addr)
rørrr—rrÞr6r¹r!rsr3r9r)rÚ
angle_addrrKs   rÚget_angle_addrr>¨sÚ€õ
‘”€JØˆQ„x•;ÐÐÝ ‘”‰ˆˆuØ×Ò˜%Ñ Ô Ð Øð@E˜!”H ’OOÝÔ%Ø0×7Ò7¸Ñ>Ô>ñ@ô@ð	@à×Ò•m CÐ);Ñ<Ô<Ñ=Ô=Ð=Ø!""ŒI€Eð
ˆQ„x3‚€Ø×Ò-¨Ð-=Ñ>Ô>Ñ?Ô?Ð?ØÔ×!Ò!¥&Ô"<Ø*ñ#,ô#,ñ	-ô	-ð	-àabb”	ˆØ˜5Ð Ð ð,Ý$ UÑ+Ô+‰ˆˆuˆuøÝÔ"ð	,ð	,ð	,ð	PÝ(¨Ñ/Ô/‰LˆE5ØÔ×%Ò%¥fÔ&AØ<ñ'>ô'>ñ
?ô
?ð
?ð
?øåÔ&ð	Pð	Pð	PÝÔ)Ø@×GÒGÈÑNÔNñPôPð
Pð	Pøøøð	×Ò˜%Ñ Ô Ð Ý$ UÑ+Ô+‰ˆˆuˆuˆuð	,øøøð×ÒeÑÔÐØð3q”˜S’Øabb”	ˆˆàÔ×!Ò!¥&Ô"<Ø0ñ#2ô#2ñ	3ô	3ð	3à×Ò•m CÐ)9Ñ:Ô:Ñ;Ô;Ð;Øð!q”[Ð(Ð(Ý ‘”‰ˆˆuØ×Ò˜%Ñ Ô Ð ØuÐÐs*ÄD$Ä$GÄ4>E3Å2GÅ37F*Æ**GÇGcó¬—t¦«}t|¦«\}}| |dd…¦«|jdd…|_||fS)zÇ display-name = phrase

    Because this is simply a name-rule, we don't return a display-name
    token containing a phrase, but rather a display-name token with
    the content of the phrase.

    N)r3rrIr!)rrÇrKs   rÚget_display_namer@ÖsX€õ‘=”=€LÝ˜eÑ$Ô$L€Eˆ5Ø×Ò˜˜a˜a˜aœÑ!Ô!Ð!Ø œ=¨¨¨Ô+€LÔØ˜ÐÐrcóh—t¦«}d}|dtvr;t|¦«\}}|s'tjd |¦«¦«‚|ddkr˜|dtvr'tjd |¦«¦«‚t|¦«\}}|s'tjd |¦«¦«‚||g|ddd…<d}| |¦«t|¦«\}}||g|dd…<| |¦«||fS)z, name-addr = [display-name] angle-addr

    Nrz!expected name-addr but found '{}'r;)
rãrrrrÞr6rr@r—r>)rÚ	name_addrrrKs    rÚ
get_name_addrrCåsa€õ‘
”
€Ià
€FØˆQ„x•;ÐÐÝ  ™œ‰
ˆØð	DÝÔ)Ø3×:Ò:¸6ÑBÔBñDôDð
DàˆQ„x3‚€ØŒ8•{Ð"Ð"ÝÔ)Ø3×:Ò:¸5ÑAÔAñCôCð
Cå'¨Ñ.Ô.‰ˆˆuØð	CÝÔ)Ø3×:Ò:¸5ÑAÔAñCôCð
CàÐØ"˜8ˆE!ŒHRaR‰LØˆFØ×Ò˜ÑÔÐÝ! %Ñ(Ô(L€Eˆ5Ø
ÐØHˆˆbˆqˆb‰	Ø
×ÒUÑÔÐØeÐÐrcóˆ—t¦«}	t|¦«\}}nc#tj$rQ	t	|¦«\}}n:#tj$r(tjd |¦«¦«‚wxYwYnwxYwt
d„|jD¦«¦«rd|_| 	|¦«||fS)z& mailbox = name-addr / addr-spec

    zexpected mailbox but found '{}'c3óJK—|]}t|tj¦«V—ŒdSr)r?rrsr*s  rr-zget_mailbox.<locals>.<genexpr>sCèè€ð3ð3ØõaÔ3Ñ4Ô4ð3ð3ð3ð3ð3ð3rrË)
rrCrrÞr3r6Úanyr>r\r—)rrÊrKs   rÚget_mailboxrGs
€õ‰iŒi€GðAÝ$ UÑ+Ô+‰ˆˆuˆuøÝÔ"ðAðAðAð	AÝ(¨Ñ/Ô/‰LˆE55øÝÔ&ð	Að	Að	AÝÔ)Ø1×8Ò8¸Ñ?Ô?ñAôAð
Að	Aøøøð5ðAøøøõð3ð3Ø %Ô 1ð3ñ3ô3ñ3ô3ð/à.ˆÔØ‡N‚N5ÑÔÐØEˆ>Ðó&#£B³AÁBÁ7A=Á=BÂBcó*—t¦«}|r€|d|vrv|dtvr4| t|dd¦«¦«|dd…}n't	|¦«\}}| |¦«|r
|d|v°v||fS)zÍ Read everything up to one of the chars in endchars.

    This is outside the formal grammar.  The InvalidMailbox TokenList that is
    returned acts like a Mailbox, but the data attributes are None.

    rr#rçN)rrr—r¹r)rrÍÚinvalid_mailboxrKs    rÚget_invalid_mailboxrKs¿€õ%Ñ&Ô&€OØ
ð*E˜!”H HÐ,Ð,ØŒ8•{Ð"Ð"Ø×"Ò"¥=°°q´Ø1Dñ$Fô$Fñ
Gô
Gð
Gà˜!˜"˜"”IˆEˆEå% eÑ,Ô,‰LˆE5Ø×"Ò" 5Ñ)Ô)Ð)ðð*E˜!”H HÐ,Ð,ð˜EÐ!Ð!rcóô—t¦«}|rd|ddkrW	t|¦«\}}| |¦«n}#tj$rjd}|dt
vr¿t
|¦«\}}|r
|ddvrB| |¦«|j tjd¦«¦«nöt|d¦«\}}||g|dd…<| |¦«|j tj
d¦«¦«n—|ddkr-|j tjd¦«¦«n^t|d¦«\}}||g|dd…<| |¦«|j tj
d¦«¦«YnwxYw|rm|ddvrc|d}d	|_t|d¦«\}}| |¦«|j tj
d¦«¦«|r0|ddkr$| t¦«|d
d…}|r
|ddk°W||fS)aJ mailbox-list = (mailbox *("," mailbox)) / obs-mbox-list
        obs-mbox-list = *([CFWS] ",") mailbox *("," [mailbox / CFWS])

    For this routine we go outside the formal grammar in order to improve error
    handling.  We recognize the end of the mailbox list only at the end of the
    value or at a ';' (the group terminator).  This is so that we can turn
    invalid mailboxes into InvalidMailbox tokens and continue parsing any
    remaining valid mailboxes.  We also allow all mailbox entries to be null,
    and this condition is handled appropriately at a higher level.

    rú;Nz,;zempty element in mailbox-listzinvalid mailbox in mailbox-listrÃrërËrç)rÎrGr—rrÞrrr!rrKrsr\rIr6)rÚmailbox_listrKrrÊs     rÚget_mailbox_listrO*sß€õ‘=”=€LØ
ñ(E˜!”H ’O‘Oð	8Ý& uÑ-Ô-‰LˆE5Ø×Ò Ñ&Ô&Ð&Ñ&øÝÔ&ð	8ñ	8ð	8ØˆFØQŒx;Ð&Ð&Ý (¨¡¤‘
˜Øð
<  a¤¨DÐ 0Ð 0Ø ×'Ò'¨Ñ/Ô/Ð/Ø Ô(×/Ò/µÔ0KØ7ñ19ô19ñ:ô:ð:ð:õ$7°u¸dÑ#CÔ#C‘LE˜5ØÐ)Ø%+ H˜˜b˜q˜b™	Ø ×'Ò'¨Ñ.Ô.Ð.Ø Ô(×/Ò/µÔ0JØ9ñ1;ô1;ñ<ô<ð<ð<àq”˜S’ØÔ$×+Ò+FÔ,GØ3ñ-5ô-5ñ6ô6ð6ð6õ 3°5¸$Ñ?Ô?‘uØÐ%Ø!' E˜"˜1˜"‘IØ×#Ò# EÑ*Ô*Ð*ØÔ$×+Ò+FÔ,FØ5ñ-7ô-7ñ8ô8ð8øøð/	8øøøð2ð	4U˜1”X TÐ)Ð)ð# 2Ô&ˆGØ!2ˆGÔÝ.¨u°dÑ;Ô;‰LˆE5ØNŠN˜5Ñ!Ô!Ð!ØÔ ×'Ò'Ô(BØ1ñ)3ô)3ñ
4ô
4ð
4àð	U˜1”X ’__Ø×Ò¥
Ñ.Ô.Ð.Ø˜!˜"˜"”IˆEðQð(E˜!”H ’O‘OðR˜ÐÐs 'A	Á	E7GÇGcóö—t¦«}|s0|j tjd¦«¦«||fSd}|r|dt
vr~t
|¦«\}}|sE|j tjd¦«¦«| |¦«||fS|ddkr| |¦«||fSt|¦«\}}t|j	¦«dkr\|| |¦«| 
|¦«|j tjd¦«¦«||fS||g|dd…<| |¦«||fS)zg group-list = mailbox-list / CFWS / obs-group-list
        obs-group-list = 1*([CFWS] ",") [CFWS]

    zend of header before group-listNrzend of header in group-listrMzgroup-list with empty entries)rÖr!r—rrsrrrOrèrÁrIr)rÚ
group_listrrKs    rÚget_group_listrRcsº€õ
‘”€JØð!ØÔ×!Ò!¥&Ô"<Ø-ñ#/ô#/ñ	0ô	0ð	0à˜5Ð Ð Ø
€FØð%q”[Ð(Ð(Ý  ™œ‰
ˆØð	%ð
Ô×%Ò%¥fÔ&@Ø-ñ'/ô'/ñ
0ô
0ð
0à×Ò˜fÑ%Ô%Ð%Ø˜uÐ$Ð$ØŒ8sŠ?ˆ?Ø×Ò˜fÑ%Ô%Ð%Ø˜uÐ$Ð$Ý# EÑ*Ô*L€Eˆ5Ý
ˆ5ÔÑÔ Ò"Ð"ØÐØ×Ò˜fÑ%Ô%Ð%Ø×Ò˜%Ñ Ô Ð ØÔ×!Ò!¥&Ô"=Ø+ñ#-ô#-ñ	.ô	.ð	.à˜5Ð Ð Ø
ÐØHˆˆbˆqˆb‰	Ø×ÒeÑÔÐØuÐÐrcóŽ—t¦«}t|¦«\}}|r|ddkr'tjd |¦«¦«‚| |¦«| t
dd¦«¦«|dd…}|r;|ddkr/| t
dd¦«¦«||dd…fSt|¦«\}}| |¦«|s-|j tj	d	¦«¦«n3|ddkr'tjd
 |¦«¦«‚| t
dd¦«¦«|dd…}|r6|dtvr't|¦«\}}| |¦«||fS)z7 group = display-name ":" [group-list] ";" [CFWS]

    rr5z8expected ':' at end of group display name but found '{}'zgroup-display-name-terminatorrçNrMzgroup-terminatorzend of header in groupz)expected ';' at end of group but found {})rÜr@rrÞr6r—r¹rRr!rsrr)rrÅrKs   rÚ	get_grouprTˆsÕ€õ
‰GŒG€EÝ# EÑ*Ô*L€Eˆ5Øð9E˜!”H ’OOÝÔ%ð'*ß*0ª&°©-¬-ñ9ô9ð	9à	‡L‚LÑÔÐØ	‡L‚L•˜sÐ$CÑDÔDÑEÔEÐEØ!""ŒI€EØð q”˜S’Ø
Š•] 3Ð(:Ñ;Ô;Ñ<Ô<Ð<Øe˜A˜B˜B”iÐÐÝ! %Ñ(Ô(L€Eˆ5Ø	‡L‚LÑÔÐØðGØ
Œ
×ÒVÔ7Ø$ñ&ô&ñ	'ô	'ð	'ð	'à	ˆqŒSŠˆÝÔ%Ø7×>Ò>¸uÑEÔEñGôGð	Gà	‡L‚L•˜sÐ$6Ñ7Ô7Ñ8Ô8Ð8Ø!""ŒI€EØðq”[Ð(Ð(Ý ‘”‰ˆˆuØ
ŠUÑÔÐØ%ˆ<Ðrcó>—t¦«}	t|¦«\}}nc#tj$rQ	t	|¦«\}}n:#tj$r(tjd |¦«¦«‚wxYwYnwxYw| |¦«||fS)aš address = mailbox / group

    Note that counter-intuitively, an address can be either a single address or
    a list of addresses (a group).  This is why the returned Address object has
    a 'mailboxes' attribute which treats a single address as a list of length
    one.  When you need to differentiate between to two cases, extract the single
    element, which is either a mailbox or a group token.

    zexpected address but found '{}')rÃrTrrÞrGr6r—)rr²rKs   rÚget_addressrV¦sÑ€õ"‰iŒi€GðAÝ  Ñ'Ô'‰ˆˆuˆuøÝÔ"ðAðAðAð	AÝ& uÑ-Ô-‰LˆE55øÝÔ&ð	Að	Að	AÝÔ)Ø1×8Ò8¸Ñ?Ô?ñAôAð
Að	Aøøøð5ðAøøøð‡N‚N5ÑÔÐØEˆ>ÐrHcó—t¦«}|rm	t|¦«\}}| |¦«n£#tj$r}d}|dt
vrÐt
|¦«\}}|r|ddkrC| |¦«|j tjd¦«¦«nt|d¦«\}}||g|dd…<| t|g¦«¦«|j tjd¦«¦«n¥|ddkr-|j tjd¦«¦«nlt|d¦«\}}||g|dd…<| t|g¦«¦«|j tjd¦«¦«Yd}~nd}~wwxYw|ru|ddkri|dd}d|_t|d¦«\}}| 
|¦«|j tjd¦«¦«|r$| t¦«|d	d…}|°m||fS)
a address_list = (address *("," address)) / obs-addr-list
        obs-addr-list = *([CFWS] ",") address *("," [address / CFWS])

    We depart from the formal grammar here by continuing to parse until the end
    of the input, assuming the input to be entirely composed of an
    address-list.  This is always true in email parsing, and allows us
    to skip invalid addresses to parse additional valid ones.

    NrrÃz"address-list entry with no contentzinvalid address in address-listzempty element in address-listrërËrç)r¯rVr—rrÞrrr!rrKrÃrsr\rIr6)rÚaddress_listrKÚerrrrÊs      rÚget_address_listrZÃs×€õ‘=”=€LØ
ñ(ð	8Ý& uÑ-Ô-‰LˆE5Ø×Ò Ñ&Ô&Ð&Ñ&øÝÔ&ð	8ñ	8ð	8ØˆFØQŒx;Ð&Ð&Ý (¨¡¤‘
˜Øð
<  a¤¨C¢ Ø ×'Ò'¨Ñ/Ô/Ð/Ø Ô(×/Ò/µÔ0KØ<ñ1>ô1>ñ?ô?ð?ñ?õ$7°u¸cÑ#BÔ#B‘LE˜5ØÐ)Ø%+ H˜˜b˜q˜b™	Ø ×'Ò'°°Ñ(8Ô(8Ñ9Ô9Ð9Ø Ô(×/Ò/µÔ0JØ9ñ1;ô1;ñ<ô<ð<ð<àq”˜S’ØÔ$×+Ò+FÔ,GØ3ñ-5ô-5ñ6ô6ð6ð6õ 3°5¸#Ñ>Ô>‘uØÐ%Ø!' E˜"˜1˜"‘IØ×#Ò#¥G¨U¨GÑ$4Ô$4Ñ5Ô5Ð5ØÔ$×+Ò+FÔ,FØ5ñ-7ô-7ñ8ô8ð8øøøøøøøøøð/	8øøøð2ð	4U˜1”X ’__ð# 2Ô& qÔ)ˆGØ!2ˆGÔÝ.¨u°cÑ:Ô:‰LˆE5ØNŠN˜5Ñ!Ô!Ð!ØÔ ×'Ò'Ô(BØ1ñ)3ô)3ñ
4ô
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4àð	Ø×Ò¥
Ñ.Ô.Ð.Ø˜!˜"˜"”IˆEðQñ(ðR˜ÐÐs“'<¼GÁFGÇGcóF—t¦«}|s'tjd |¦«¦«‚|ddkr'tjd |¦«¦«‚| tdd¦«¦«|dd…}t
|¦«\}}| |¦«|r|ddkr'tjd	 |¦«¦«‚| tdd
¦«¦«||dd…fS)z& no-fold-literal = "[" *dtext "]"
    z'expected no-fold-literal but found '{}'rr-z;expected '[' at the start of no-fold-literal but found '{}'zno-fold-literal-startrçNr(z9expected ']' at the end of no-fold-literal but found '{}'zno-fold-literal-end)r!rrÞr6r—r¹r&)rÚno_fold_literalrKs   rÚget_no_fold_literalr]ús1€õ$‘o”o€OØðEÝÔ%Ø5×<Ò<¸UÑCÔCñEôEð	EàˆQ„x3‚€ÝÔ%ð
ß#šV E™]œ]ñ,ô,ð	,ð×Ò=¨Ð.EÑFÔFÑGÔGÐGØ!""ŒI€EÝ˜UÑ#Ô#L€Eˆ5Ø×Ò˜5Ñ!Ô!Ð!Øð,E˜!”H ’OOÝÔ%ð
ß#šV E™]œ]ñ,ô,ð	,ð×Ò=¨Ð.CÑDÔDÑEÔEÐEØ˜E ! " "œIÐ%Ð%rcó&—t¦«}|r6|dtvr't|¦«\}}| |¦«|r|ddkr't	jd |¦«¦«‚| tdd¦«¦«|dd…}	t|¦«\}}n#tj$r}	t|¦«\}}|j
 t	jd¦«¦«n:#tj$r(t	jd |¦«¦«‚wxYwYnwxYw| |¦«|r|dd	krk|j
 t	jd
¦«¦«|r9|ddkr-| tdd¦«¦«|dd…}||fS| td	d
¦«¦«|dd…}	t|¦«\}}n¿#tj$r	t|¦«\}}n–#tj$r„}	t|¦«\}}|j
 t	jd¦«¦«n:#tj$r(t	jd |¦«¦«‚wxYwYd}~nd}~wwxYwYnwxYw| |¦«|r|ddkr|dd…}n,|j
 t	jd¦«¦«| tdd¦«¦«|r6|dtvr't|¦«\}}| |¦«||fS)zÏmsg-id = [CFWS] "<" id-left '@' id-right  ">" [CFWS]
       id-left = dot-atom-text / obs-id-left
       id-right = dot-atom-text / no-fold-literal / obs-id-right
       no-fold-literal = "[" *dtext "]"
    rr;zexpected msg-id but found '{}'zmsg-id-startrçNzobsolete id-left in msg-idz4expected dot-atom-text or obs-id-left but found '{}'r+zmsg-id with no id-rightr<z
msg-id-endr2zobsolete id-right in msg-idzFexpected dot-atom-text, no-fold-literal or obs-id-right but found '{}'zmissing trailing '>' on msg-id)r™rrr—rrÞr6r¹rrr!rrsr]r0)rÚmsg_idrKÚes    rÚ
get_msg_idras
€õ‰WŒW€FØðq”[Ð(Ð(Ý ‘”‰ˆˆuØ
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eÑÔÐØð<E˜!”H ’OOÝÔ%Ø,×3Ò3°EÑ:Ô:ñ<ô<ð	<à
‡M‚M•-  ^Ñ4Ô4Ñ5Ô5Ð5Ø!""ŒI€Eð1Ý(¨Ñ/Ô/‰ˆˆuˆuøÝÔ"ð	1ð	1ð	1ð	1å-¨eÑ4Ô4‰LˆE5ØŒN×!Ò!¥&Ô"=Ø,ñ#.ô#.ñ
/ô
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/ð		1øøøð‡M‚M%ÑÔÐØð	E˜!”H ’OOØŒ×ÒfÔ8Ø%ñ'ô'ñ	(ô	(ð	(ð
ð	U˜1”X ’__ØMŠM-¨¨\Ñ:Ô:Ñ;Ô;Ð;Ø˜!˜"˜"”IˆEØuˆ}ÐØ
‡M‚M•- Ð%8Ñ9Ô9Ñ:Ô:Ð:Ø!""ŒI€Eð
5Ý(¨Ñ/Ô/‰ˆˆuˆuøÝÔ"ð5ð5ð5ð
	5Ý.¨uÑ5Ô5‰LˆE55øÝÔ&ð	5ð	5ð	5ð
5Ý)¨%Ñ0Ô0‘uØ”×%Ò%¥fÔ&AØ1ñ'3ô'3ñ4ô4ð4ð4øåÔ*ð
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5øøøð4ð4ð4ð4ð4øøøøð	5øøøøøð5øøøð‡M‚M%ÑÔÐØð/q”˜S’Øabb”	ˆˆàŒ×ÒfÔ8Ø,ñ.ô.ñ	/ô	/ð	/à
‡M‚M•-  \Ñ2Ô2Ñ3Ô3Ð3Øðq”[Ð(Ð(Ý ‘”‰ˆˆuØ
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eÑÔÐØ5ˆ=ÐsxÂ*B=Â=E	Ã
>DÄE	Ä7EÅE	ÅE	ÈHÈKÈ+H>È=KÈ>KÉ>J
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7KËKËKËKËKËKcóè—t¦«}	t|¦«\}}| |¦«|r?|j t	jd |¦«¦«¦«ny#tj$rg}t|¦«}t|¦«}|j t	jd |¦«¦«¦«Yd}~nd}~wwxYw|S)z2message-id      =   "Message-ID:" msg-id CRLF
    zUnexpected {!r}zInvalid msg-id: {!r}N)
rrar—r!rrsr6rÞròrŸ)rÚ
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ØÔ×!Ò!ÝÔ&Ð'=×'DÒ'DÀRÑ'HÔ'HÑIÔIñ	Kô	Kð	Kð	Kð	Kð	Kð	Kð	KøøøøðKøøøðÐs'A9Á9C/ÂAC*Ã*C/có —t¦«}|s.|j tjd¦«¦«|S|dt
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|¦«\}}| |¦«|rO|j tjd¦«¦«| t|d	¦«¦«|S)zE mime-version = [CFWS] 1*digit [CFWS] "." [CFWS] 1*digit [CFWS]

    z%Missing MIME version number (eg: 1.0)rz0Expected MIME version number but found only CFWSr'r	rçNz1Expected MIME major version number but found {!r}rÇÚdigitsz0Incomplete MIME version; found only major numberzversion-separatorz1Expected MIME minor version number but found {!r}z'Excess non-CFWS text after MIME version)rKr!r—rÚHeaderMissingRequiredValuerrÚisdigitrsr6r¹ÚintrLrM)rÚmime_versionrKrgs    rÚparse_mime_versionrlqsŸ€õ‘=”=€LØðØÔ×#Ò#¥FÔ$EØ3ñ%5ô%5ñ	6ô	6ð	6àÐØˆQ„x•;ÐÐÝ ‘”‰ˆˆuØ×Ò˜EÑ"Ô"Ð"Øð	EØÔ ×'Ò'Ô(IØBñ)Dô)Dñ
Eô
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ðE˜!”H ’OO¨¨a¬½Ð(CÐ(CØ%˜”(ÑˆØabb”	ˆððE˜!”H ’OO¨¨a¬½Ð(CÐ(Cð>Š>ÑÔð=ØÔ×#Ò#¥FÔ$>Ø?×FÒFÀvÑNÔNñ%Pô%Pñ	Qô	Qð	Qà×ÒM¨&°'Ñ:Ô:Ñ;Ô;Ð;Ð;å  ™[œ[ˆÔØ×ÒM¨&°(Ñ;Ô;Ñ<Ô<Ð<Øð#q”[Ð(Ð(Ý ‘”‰ˆˆuØ×Ò˜EÑ"Ô"Ð"ØðE˜!”H ’OOØÔÐ)ØÔ ×'Ò'Ô(BØBñ)Dô)Dñ
Eô
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Eàð	?Ø×Ò¥
¨e°WÑ =Ô =Ñ>Ô>Ð>ØÐØ×Ò
 cÐ+>Ñ?Ô?Ñ@Ô@Ð@Ø!""ŒI€EØð#q”[Ð(Ð(Ý ‘”‰ˆˆuØ×Ò˜EÑ"Ô"Ð"ØðØÔÐ)ØÔ ×'Ò'Ô(BØBñ)Dô)Dñ
Eô
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ðE˜!”H¥KÐ/Ð/Ø%˜”(ÑˆØabb”	ˆððE˜!”H¥KÐ/Ð/ð>Š>ÑÔð=ØÔ×#Ò#¥FÔ$>Ø?×FÒFÀvÑNÔNñ%Pô%Pñ	Qô	Qð	Qà×ÒM¨&°'Ñ:Ô:Ñ;Ô;Ð;Ð;å  ™[œ[ˆÔØ×ÒM¨&°(Ñ;Ô;Ñ<Ô<Ð<Øð#q”[Ð(Ð(Ý ‘”‰ˆˆuØ×Ò˜EÑ"Ô"Ð"Øð;ØÔ×#Ò#¥FÔ$>Ø5ñ%7ô%7ñ	8ô	8ð	8à×ÒM¨%°Ñ9Ô9Ñ:Ô:Ð:ØÐrcó2—t¦«}|r„|ddkrx|dtvr4| t|dd¦«¦«|dd…}n't	|¦«\}}| |¦«|r|ddk°x||fS)zÁ Read everything up to the next ';'.

    This is outside the formal grammar.  The InvalidParameter TokenList that is
    returned acts like a Parameter, but the data attributes are None.

    rrMr#rçN)rZrr—r¹r)rÚinvalid_parameterrKs   rÚget_invalid_parameterroµs¼€õ)Ñ*Ô*ÐØ
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Ià˜!˜"˜"”IˆEˆEå% eÑ,Ô,‰LˆE5Ø×$Ò$ UÑ+Ô+Ð+ðð,E˜!”H ’OOð˜eÐ#Ð#rcó—t|¦«}|s'tjd |¦«¦«‚| ¦«}|t|¦«d…}t
|d¦«}t|¦«||fS)a8ttext = <matches _ttext_matcher>

    We allow any non-TOKEN_ENDS in ttext, but add defects to the token's
    defects list if we find non-ttext characters.  We also register defects for
    *any* non-printables even though the RFC doesn't exclude all of them,
    because we follow the spirit of RFC 5322.

    zexpected ttext but found '{}'NÚttext)Ú_non_token_end_matcherrrÞr6rÅrèr¹rÉ)rrürqs   rÚ	get_ttextrsÇs‡€õ	˜uÑ%Ô%€AØð;ÝÔ%Ø+×2Ò2°5Ñ9Ô9ñ;ô;ð	;à
GŠG‰IŒI€EØ•#e‘*”*++Ô€EÝ˜% Ñ)Ô)€EÝEÑÔÐØ%ˆ<ÐrcóÄ—t¦«}|r6|dtvr't|¦«\}}| |¦«|r6|dtvr'tjd |¦«¦«‚t|¦«\}}| |¦«|r6|dtvr't|¦«\}}| |¦«||fS)zútoken = [CFWS] 1*ttext [CFWS]

    The RFC equivalent of ttext is any US-ASCII chars except space, ctls, or
    tspecials.  We also exclude tabs even though the RFC doesn't.

    The RFC implies the CFWS but is not explicit about it in the BNF.

    rúexpected token but found '{}')	r†rrr—Ú
TOKEN_ENDSrrÞr6rs)rÚmtokenrKs   rÚ	get_tokenrxÚsä€õ‰WŒW€FØðq”[Ð(Ð(Ý ‘”‰ˆˆuØ
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eÑÔÐØð;q”ZÐ'Ð'ÝÔ%Ø+×2Ò2°5Ñ9Ô9ñ;ô;ð	;å˜UÑ#Ô#L€Eˆ5Ø
‡M‚M%ÑÔÐØðq”[Ð(Ð(Ý ‘”‰ˆˆuØ
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eÑÔÐØ5ˆ=Ðrcó—t|¦«}|s'tjd |¦«¦«‚| ¦«}|t|¦«d…}t
|d¦«}t|¦«||fS)aQattrtext = 1*(any non-ATTRIBUTE_ENDS character)

    We allow any non-ATTRIBUTE_ENDS in attrtext, but add defects to the
    token's defects list if we find non-attrtext characters.  We also register
    defects for *any* non-printables even though the RFC doesn't exclude all of
    them, because we follow the spirit of RFC 5322.

    z expected attrtext but found {!r}Nr`)Ú_non_attribute_end_matcherrrÞr6rÅrèr¹rÉ©rrür`s   rÚget_attrtextr|ñs‡€õ	# 5Ñ)Ô)€AØð>ÝÔ%Ø.×5Ò5°eÑ<Ô<ñ>ô>ð	>àwŠw‰yŒy€HØ•#h‘-”-..Ô!€EÝ˜X zÑ2Ô2€HÝHÑÔÐØUˆ?ÐrcóÄ—t¦«}|r6|dtvr't|¦«\}}| |¦«|r6|dtvr'tjd |¦«¦«‚t|¦«\}}| |¦«|r6|dtvr't|¦«\}}| |¦«||fS)aH [CFWS] 1*attrtext [CFWS]

    This version of the BNF makes the CFWS explicit, and as usual we use a
    value terminal for the actual run of characters.  The RFC equivalent of
    attrtext is the token characters, with the subtraction of '*', "'", and '%'.
    We include tab in the excluded set just as we do for token.

    rru)	r]rrr—ÚATTRIBUTE_ENDSrrÞr6r|©rr^rKs   rÚ
get_attributer€	së€õ‘”€IØð q”[Ð(Ð(Ý ‘”‰ˆˆuØ×Ò˜ÑÔÐØð;q”^Ð+Ð+ÝÔ%Ø+×2Ò2°5Ñ9Ô9ñ;ô;ð	;å Ñ&Ô&L€Eˆ5Ø
×ÒUÑÔÐØð q”[Ð(Ð(Ý ‘”‰ˆˆuØ×Ò˜ÑÔÐØeÐÐrcó—t|¦«}|s'tjd |¦«¦«‚| ¦«}|t|¦«d…}t
|d¦«}t|¦«||fS)zÛattrtext = 1*(any non-ATTRIBUTE_ENDS character plus '%')

    This is a special parsing routine so that we get a value that
    includes % escapes as a single string (which we decode as a single
    string later).

    z)expected extended attrtext but found {!r}Núextended-attrtext)Ú#_non_extended_attribute_end_matcherrrÞr6rÅrèr¹rÉr{s   rÚget_extended_attrtextr„	sŒ€õ	,¨EÑ2Ô2€AØðGÝÔ%Ø7×>Ò>¸uÑEÔEñGôGð	GàwŠw‰yŒy€HØ•#h‘-”-..Ô!€EÝ˜XÐ':Ñ;Ô;€HÝHÑÔÐØUˆ?ÐrcóÄ—t¦«}|r6|dtvr't|¦«\}}| |¦«|r6|dtvr'tjd |¦«¦«‚t|¦«\}}| |¦«|r6|dtvr't|¦«\}}| |¦«||fS)z± [CFWS] 1*extended_attrtext [CFWS]

    This is like the non-extended version except we allow % characters, so that
    we can pick up an encoded value as a single string.

    rru)	r]rrr—ÚEXTENDED_ATTRIBUTE_ENDSrrÞr6r„rs   rÚget_extended_attributer‡-	sì€õ‘”€IØð q”[Ð(Ð(Ý ‘”‰ˆˆuØ×Ò˜ÑÔÐØð;q”Õ4Ð4Ð4ÝÔ%Ø+×2Ò2°5Ñ9Ô9ñ;ô;ð	;å(¨Ñ/Ô/L€Eˆ5Ø
×ÒUÑÔÐØð q”[Ð(Ð(Ý ‘”‰ˆˆuØ×Ò˜ÑÔÐØeÐÐrcóø—t¦«}|r|ddkr'tjd |¦«¦«‚| tdd¦«¦«|dd…}|r|d ¦«s'tjd |¦«¦«‚d}|rK|d ¦«r1||dz
}|dd…}|r|d ¦«°1|dd	kr2|d	kr,|j tjd
¦«¦«t|¦«|_
| t|d¦«¦«||fS)a6 '*' digits

    The formal BNF is more complicated because leading 0s are not allowed.  We
    check for that and add a defect.  We also assume no CFWS is allowed between
    the '*' and the digits, though the RFC is not crystal clear on that.
    The caller should already have dealt with leading CFWS.

    rÚ*zExpected section but found {}zsection-markerrçNz$Expected section number but found {}r'Ú0z'section number has an invalid leading 0rg)rdrrÞr6r—r¹rir!rsrjrT)rrergs   rÚget_sectionr‹C	s—€õ‰iŒi€GØð0E˜!”H ’OOÝÔ%Ð&E×&LÒ&LØ(-ñ'/ô'/ñ0ô0ð	0à‡N‚N•= Ð&6Ñ7Ô7Ñ8Ô8Ð8Ø!""ŒI€EØð@˜˜aœ×(Ò(Ñ*Ô*ð@ÝÔ%ð'1ß17²¸±´ñ@ô@ð	@à
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|¦«\}}nt|¦«\}}||g|dd…<| |¦«||fS)z  quoted-string / attribute

    z&Expected value but found end of stringNrz Expected value but found only {}r)	rgrrÞrrr6rr‡r—)rÚvrrKs    rÚ	get_valuerŽa	sÚ€õ	‰Œ€AØðPÝÔ%Ð&NÑOÔOÐOØ
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ÐØHˆˆbˆqˆb‰	Ø‡H‚HˆUO„O€OØˆeˆ8€Orcó‚—t¦«}t|¦«\}}| |¦«|r|ddkrC|j t	jd |¦«¦«¦«||fS|ddkr›	t|¦«\}}d|_| |¦«n#tj	$rYnwxYw|st	j	d¦«‚|ddkr4| tdd¦«¦«|dd	…}d|_|dd
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krt|¦«\}}|j}d}|jdkr4|r|ddkrd}nBt#|¦«\}}	|	r|	ddkrd}n	t%|¦«\}}	|	sd}n#YnxYw|r_|j t	jd¦«¦«| |¦«|D]}
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J|¦«‚|}||fS)aY attribute [section] ["*"] [CFWS] "=" value

    The CFWS is implied by the RFC but not made explicit in the BNF.  This
    simplified form of the BNF from the RFC is made to conform with the RFC BNF
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