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.ie \n(.g .ds Aq \(aq
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.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
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.\"
.IX Title "Mail::Message::Body::Nested 3"
.TH Mail::Message::Body::Nested 3 2025-12-14 "perl v5.42.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH NAME
Mail::Message::Body::Nested \- body of a message which contains a message
.SH INHERITANCE
.IX Header "INHERITANCE"
.Vb 3
\& Mail::Message::Body::Nested
\&   is a Mail::Message::Body
\&   is a Mail::Reporter
\&
\&   Mail::Message::Body also extends Mail::Reporter
\&   is a Mail::Reporter
.Ve
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 1
\&  See Mail::Message::Body
\&
\&  if($body\->isNested) {
\&     my $nest = $body\->nested;
\&     $nest\->delete;
\&  }
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
The body (content) of a message can be stored in various ways.  In this
manual\-page you find the description of extra functionality you have
when a message contains a nested message, like \f(CW\*(C`message/rfc822\*(C'\fR.
.PP
A nested message is different from a multipart message which contains
only one element, because a nested message has a full set of message
header fields defined by the RFC882, where a part of a multipart has
only a few.  But because we do not keep track whether all fields are
presented, a \f(CW\*(C`Mail::Message::Part\*(C'\fR is used anyway.
.PP
\&\fBWARNING:\fR Since 2023, at least outlook started to interpret RFC6533
incorrectly.  Bodies of type \*(Aqmessage/rfc822\*(Aq can only be \*(Aqnested\*(Aq, but
when they (illegally) have Content\-Transfer\-Encoding, they can now behave
like normal message parts (the same as a pdf or image).
.PP
Extends "DESCRIPTION" in Mail::Message::Body.
.SH OVERLOADED
.IX Header "OVERLOADED"
Extends "OVERLOADED" in Mail::Message::Body.
.IP "overload: \fB""""\fR stringification" 4
.IX Item "overload: """" stringification"
Inherited, see "OVERLOADED" in Mail::Message::Body
.IP "overload: \fB\*(Aq==\*(Aq\fR numerical comparison" 4
.IX Item "overload: '==' numerical comparison"
Inherited, see "OVERLOADED" in Mail::Message::Body
.IP "overload: \fB@{}\fR addressed as array" 4
.IX Item "overload: @{} addressed as array"
Inherited, see "OVERLOADED" in Mail::Message::Body
.IP "overload: \fBbool\fR true/false" 4
.IX Item "overload: bool true/false"
Inherited, see "OVERLOADED" in Mail::Message::Body
.SH METHODS
.IX Header "METHODS"
Extends "METHODS" in Mail::Message::Body.
.SS Constructors
.IX Subsection "Constructors"
Extends "Constructors" in Mail::Message::Body.
.ie n .IP $obj\->\fBclone\fR() 4
.el .IP \f(CW$obj\fR\->\fBclone\fR() 4
.IX Item "$obj->clone()"
Inherited, see "Constructors" in Mail::Message::Body
.ie n .IP $class\->\fBnew\fR(%options) 4
.el .IP \f(CW$class\fR\->\fBnew\fR(%options) 4
.IX Item "$class->new(%options)"
Inherited, see "Constructors" in Mail::Message::Body
.Sp
.Vb 10
\& \-Option           \-\-Defined in         \-\-Default
\&  based_on           Mail::Message::Body  undef
\&  charset            Mail::Message::Body  \*(AqPERL\*(Aq
\&  checked            Mail::Message::Body  false
\&  content_id         Mail::Message::Body  undef
\&  data               Mail::Message::Body  undef
\&  description        Mail::Message::Body  undef
\&  disposition        Mail::Message::Body  undef
\&  eol                Mail::Message::Body  \*(AqNATIVE\*(Aq
\&  file               Mail::Message::Body  undef
\&  filename           Mail::Message::Body  undef
\&  language           Mail::Message::Body  undef
\&  message            Mail::Message::Body  undef
\&  mime_type          Mail::Message::Body  \*(Aqmessage/rfc822\*(Aq
\&  modified           Mail::Message::Body  false
\&  nested                                  undef
\&  transfer_encoding  Mail::Message::Body  \*(Aqnone\*(Aq
.Ve
.RS 4
.ie n .IP "based_on => $body" 2
.el .IP "based_on => \f(CW$body\fR" 2
.IX Item "based_on => $body"
.PD 0
.ie n .IP "charset => $charset|\*(AqPERL\*(Aq|<undef>" 2
.el .IP "charset => \f(CW$charset\fR|\*(AqPERL\*(Aq|<undef>" 2
.IX Item "charset => $charset|'PERL'|<undef>"
.IP "checked => BOOLEAN" 2
.IX Item "checked => BOOLEAN"
.IP "content_id => STRING" 2
.IX Item "content_id => STRING"
.IP "data => \e@lines|$text" 2
.IX Item "data => @lines|$text"
.IP "description => STRING|$field" 2
.IX Item "description => STRING|$field"
.IP "disposition => STRING|$field" 2
.IX Item "disposition => STRING|$field"
.IP "eol => \*(AqCR\*(Aq|\*(AqLF\*(Aq|\*(AqCRLF\*(Aq|\*(AqNATIVE\*(Aq" 2
.IX Item "eol => 'CR'|'LF'|'CRLF'|'NATIVE'"
.ie n .IP "file => $file|$handle|$io" 2
.el .IP "file => \f(CW$file\fR|$handle|$io" 2
.IX Item "file => $file|$handle|$io"
.ie n .IP "filename => $file" 2
.el .IP "filename => \f(CW$file\fR" 2
.IX Item "filename => $file"
.IP "language => STRING|\e@lang|$field" 2
.IX Item "language => STRING|@lang|$field"
.ie n .IP "message => $message" 2
.el .IP "message => \f(CW$message\fR" 2
.IX Item "message => $message"
.IP "mime_type => STRING|$field|$mime" 2
.IX Item "mime_type => STRING|$field|$mime"
.IP "modified => BOOLEAN" 2
.IX Item "modified => BOOLEAN"
.ie n .IP "nested => $message" 2
.el .IP "nested => \f(CW$message\fR" 2
.IX Item "nested => $message"
.PD
The \f(CW$message\fR which is encapsulated within this body.
.IP "transfer_encoding => STRING|$field" 2
.IX Item "transfer_encoding => STRING|$field"
.RE
.RS 4
.Sp
» example:
.Sp
.Vb 2
\&  my $msg   = $folder\->message(3);
\&  my $encaps= Mail::Message::Body::Nested\->new(nested => $msg);
\&
\&  # The body will be coerced into a message, which lacks a few
\&  # lines but we do not bother.
\&  my $intro = Mail::Message::Body\->new(data => ...);
\&  my $body  = Mail::Message::Body::Nested\->new(nested  => $intro);
.Ve
.RE
.SS Attributes
.IX Subsection "Attributes"
Extends "Attributes" in Mail::Message::Body.
.ie n .IP "$obj\->\fBcharsetDetectAlgorithm\fR( [CODE|undef|METHOD] )" 4
.el .IP "\f(CW$obj\fR\->\fBcharsetDetectAlgorithm\fR( [CODE|undef|METHOD] )" 4
.IX Item "$obj->charsetDetectAlgorithm( [CODE|undef|METHOD] )"
Inherited, see "Attributes" in Mail::Message::Body::Encode
.SS "Constructing a body"
.IX Subsection "Constructing a body"
Extends "Constructing a body" in Mail::Message::Body.
.ie n .IP "$obj\->\fBattach\fR(@messages, %options)" 4
.el .IP "\f(CW$obj\fR\->\fBattach\fR(@messages, \f(CW%options\fR)" 4
.IX Item "$obj->attach(@messages, %options)"
Inherited, see "Constructing a body" in Mail::Message::Body::Construct
.ie n .IP $obj\->\fBcharsetDetect\fR(%options) 4
.el .IP \f(CW$obj\fR\->\fBcharsetDetect\fR(%options) 4
.IX Item "$obj->charsetDetect(%options)"
Inherited, see "Constructing a body" in Mail::Message::Body::Encode
.ie n .IP $obj\->\fBcheck\fR() 4
.el .IP \f(CW$obj\fR\->\fBcheck\fR() 4
.IX Item "$obj->check()"
Inherited, see "Constructing a body" in Mail::Message::Body::Encode
.ie n .IP $obj\->\fBconcatenate\fR(@components) 4
.el .IP \f(CW$obj\fR\->\fBconcatenate\fR(@components) 4
.IX Item "$obj->concatenate(@components)"
Inherited, see "Constructing a body" in Mail::Message::Body::Construct
.ie n .IP $obj\->\fBdecoded\fR(%options) 4
.el .IP \f(CW$obj\fR\->\fBdecoded\fR(%options) 4
.IX Item "$obj->decoded(%options)"
Inherited, see "Constructing a body" in Mail::Message::Body
.ie n .IP $obj\->\fBencode\fR(%options) 4
.el .IP \f(CW$obj\fR\->\fBencode\fR(%options) 4
.IX Item "$obj->encode(%options)"
Inherited, see "Constructing a body" in Mail::Message::Body::Encode
.ie n .IP $obj\->\fBencoded\fR(%options) 4
.el .IP \f(CW$obj\fR\->\fBencoded\fR(%options) 4
.IX Item "$obj->encoded(%options)"
Inherited, see "Constructing a body" in Mail::Message::Body::Encode
.ie n .IP "$obj\->\fBeol\fR( [\*(AqCR\*(Aq|\*(AqLF\*(Aq|\*(AqCRLF\*(Aq|\*(AqNATIVE\*(Aq] )" 4
.el .IP "\f(CW$obj\fR\->\fBeol\fR( [\*(AqCR\*(Aq|\*(AqLF\*(Aq|\*(AqCRLF\*(Aq|\*(AqNATIVE\*(Aq] )" 4
.IX Item "$obj->eol( ['CR'|'LF'|'CRLF'|'NATIVE'] )"
Inherited, see "Constructing a body" in Mail::Message::Body::Encode
.ie n .IP $obj\->\fBforeachLine\fR((CODE)) 4
.el .IP \f(CW$obj\fR\->\fBforeachLine\fR((CODE)) 4
.IX Item "$obj->foreachLine((CODE))"
It is NOT possible to call some code for each line of a nested
because that would damage the header of the encapsulated message
Improves base, see "Constructing a body" in Mail::Message::Body::Construct
.ie n .IP $obj\->\fBstripSignature\fR(%options) 4
.el .IP \f(CW$obj\fR\->\fBstripSignature\fR(%options) 4
.IX Item "$obj->stripSignature(%options)"
Inherited, see "Constructing a body" in Mail::Message::Body::Construct
.ie n .IP $obj\->\fBunify\fR($body) 4
.el .IP \f(CW$obj\fR\->\fBunify\fR($body) 4
.IX Item "$obj->unify($body)"
Inherited, see "Constructing a body" in Mail::Message::Body::Encode
.SS "The body"
.IX Subsection "The body"
Extends "The body" in Mail::Message::Body.
.ie n .IP $obj\->\fBisDelayed\fR() 4
.el .IP \f(CW$obj\fR\->\fBisDelayed\fR() 4
.IX Item "$obj->isDelayed()"
Inherited, see "The body" in Mail::Message::Body
.ie n .IP $obj\->\fBisMultipart\fR() 4
.el .IP \f(CW$obj\fR\->\fBisMultipart\fR() 4
.IX Item "$obj->isMultipart()"
Inherited, see "The body" in Mail::Message::Body
.ie n .IP $obj\->\fBisNested\fR() 4
.el .IP \f(CW$obj\fR\->\fBisNested\fR() 4
.IX Item "$obj->isNested()"
Inherited, see "The body" in Mail::Message::Body
.ie n .IP "$obj\->\fBmessage\fR( [$message] )" 4
.el .IP "\f(CW$obj\fR\->\fBmessage\fR( [$message] )" 4
.IX Item "$obj->message( [$message] )"
Inherited, see "The body" in Mail::Message::Body
.ie n .IP $obj\->\fBpartNumberOf\fR($part) 4
.el .IP \f(CW$obj\fR\->\fBpartNumberOf\fR($part) 4
.IX Item "$obj->partNumberOf($part)"
Inherited, see "The body" in Mail::Message::Body
.SS "About the payload"
.IX Subsection "About the payload"
Extends "About the payload" in Mail::Message::Body.
.ie n .IP $obj\->\fBcharset\fR() 4
.el .IP \f(CW$obj\fR\->\fBcharset\fR() 4
.IX Item "$obj->charset()"
Inherited, see "About the payload" in Mail::Message::Body
.ie n .IP "$obj\->\fBchecked\fR( [BOOLEAN] )" 4
.el .IP "\f(CW$obj\fR\->\fBchecked\fR( [BOOLEAN] )" 4
.IX Item "$obj->checked( [BOOLEAN] )"
Inherited, see "About the payload" in Mail::Message::Body
.ie n .IP "$obj\->\fBcontentId\fR( [STRING|$field] )" 4
.el .IP "\f(CW$obj\fR\->\fBcontentId\fR( [STRING|$field] )" 4
.IX Item "$obj->contentId( [STRING|$field] )"
Inherited, see "About the payload" in Mail::Message::Body
.ie n .IP "$obj\->\fBdescription\fR( [STRING|$field] )" 4
.el .IP "\f(CW$obj\fR\->\fBdescription\fR( [STRING|$field] )" 4
.IX Item "$obj->description( [STRING|$field] )"
Inherited, see "About the payload" in Mail::Message::Body
.ie n .IP "$obj\->\fBdisposition\fR( [STRING|$field] )" 4
.el .IP "\f(CW$obj\fR\->\fBdisposition\fR( [STRING|$field] )" 4
.IX Item "$obj->disposition( [STRING|$field] )"
Inherited, see "About the payload" in Mail::Message::Body
.ie n .IP "$obj\->\fBdispositionFilename\fR( [$directory] )" 4
.el .IP "\f(CW$obj\fR\->\fBdispositionFilename\fR( [$directory] )" 4
.IX Item "$obj->dispositionFilename( [$directory] )"
Inherited, see "About the payload" in Mail::Message::Body::Encode
.ie n .IP $obj\->\fBisBinary\fR() 4
.el .IP \f(CW$obj\fR\->\fBisBinary\fR() 4
.IX Item "$obj->isBinary()"
Inherited, see "About the payload" in Mail::Message::Body::Encode
.ie n .IP $obj\->\fBisText\fR() 4
.el .IP \f(CW$obj\fR\->\fBisText\fR() 4
.IX Item "$obj->isText()"
Inherited, see "About the payload" in Mail::Message::Body::Encode
.ie n .IP "$obj\->\fBlanguage\fR( [@langs|\e@langs|$langs|$field] )" 4
.el .IP "\f(CW$obj\fR\->\fBlanguage\fR( [@langs|\e@langs|$langs|$field] )" 4
.IX Item "$obj->language( [@langs|@langs|$langs|$field] )"
Inherited, see "About the payload" in Mail::Message::Body
.ie n .IP $obj\->\fBmimeType\fR() 4
.el .IP \f(CW$obj\fR\->\fBmimeType\fR() 4
.IX Item "$obj->mimeType()"
Inherited, see "About the payload" in Mail::Message::Body
.ie n .IP $obj\->\fBnrLines\fR() 4
.el .IP \f(CW$obj\fR\->\fBnrLines\fR() 4
.IX Item "$obj->nrLines()"
Inherited, see "About the payload" in Mail::Message::Body
.ie n .IP $obj\->\fBsize\fR() 4
.el .IP \f(CW$obj\fR\->\fBsize\fR() 4
.IX Item "$obj->size()"
Inherited, see "About the payload" in Mail::Message::Body
.ie n .IP "$obj\->\fBtransferEncoding\fR( [STRING|$field] )" 4
.el .IP "\f(CW$obj\fR\->\fBtransferEncoding\fR( [STRING|$field] )" 4
.IX Item "$obj->transferEncoding( [STRING|$field] )"
Inherited, see "About the payload" in Mail::Message::Body
.ie n .IP "$obj\->\fBtype\fR( [STRING|$field] )" 4
.el .IP "\f(CW$obj\fR\->\fBtype\fR( [STRING|$field] )" 4
.IX Item "$obj->type( [STRING|$field] )"
Inherited, see "About the payload" in Mail::Message::Body
.SS "Access to the payload"
.IX Subsection "Access to the payload"
Extends "Access to the payload" in Mail::Message::Body.
.ie n .IP $obj\->\fBendsOnNewline\fR() 4
.el .IP \f(CW$obj\fR\->\fBendsOnNewline\fR() 4
.IX Item "$obj->endsOnNewline()"
Inherited, see "Access to the payload" in Mail::Message::Body
.ie n .IP $obj\->\fBfile\fR() 4
.el .IP \f(CW$obj\fR\->\fBfile\fR() 4
.IX Item "$obj->file()"
Inherited, see "Access to the payload" in Mail::Message::Body
.ie n .IP $obj\->\fBforNested\fR(CODE) 4
.el .IP \f(CW$obj\fR\->\fBforNested\fR(CODE) 4
.IX Item "$obj->forNested(CODE)"
Execute the \f(CW\*(C`CODE\*(C'\fR for the nested message.  This returns a new
nested body object.  Returns \f(CW\*(C`undef\*(C'\fR when the \f(CW\*(C`CODE\*(C'\fR returns \f(CW\*(C`undef\*(C'\fR.
.ie n .IP $obj\->\fBlines\fR() 4
.el .IP \f(CW$obj\fR\->\fBlines\fR() 4
.IX Item "$obj->lines()"
Inherited, see "Access to the payload" in Mail::Message::Body
.ie n .IP $obj\->\fBnested\fR() 4
.el .IP \f(CW$obj\fR\->\fBnested\fR() 4
.IX Item "$obj->nested()"
Returns the Mail::Message::Part message which is enclosed within
this body.
.ie n .IP "$obj\->\fBprint\fR( [$fh] )" 4
.el .IP "\f(CW$obj\fR\->\fBprint\fR( [$fh] )" 4
.IX Item "$obj->print( [$fh] )"
Inherited, see "Access to the payload" in Mail::Message::Body
.ie n .IP $obj\->\fBprintEscapedFrom\fR($fh) 4
.el .IP \f(CW$obj\fR\->\fBprintEscapedFrom\fR($fh) 4
.IX Item "$obj->printEscapedFrom($fh)"
Inherited, see "Access to the payload" in Mail::Message::Body
.ie n .IP $obj\->\fBstring\fR() 4
.el .IP \f(CW$obj\fR\->\fBstring\fR() 4
.IX Item "$obj->string()"
Inherited, see "Access to the payload" in Mail::Message::Body
.ie n .IP $obj\->\fBstripTrailingNewline\fR() 4
.el .IP \f(CW$obj\fR\->\fBstripTrailingNewline\fR() 4
.IX Item "$obj->stripTrailingNewline()"
Inherited, see "Access to the payload" in Mail::Message::Body
.ie n .IP $obj\->\fBwrite\fR(%options) 4
.el .IP \f(CW$obj\fR\->\fBwrite\fR(%options) 4
.IX Item "$obj->write(%options)"
Inherited, see "Access to the payload" in Mail::Message::Body
.SS Internals
.IX Subsection "Internals"
Extends "Internals" in Mail::Message::Body.
.ie n .IP "$any\->\fBaddTransferEncHandler\fR( $name, <$class|$object> )" 4
.el .IP "\f(CW$any\fR\->\fBaddTransferEncHandler\fR( \f(CW$name\fR, <$class|$object> )" 4
.IX Item "$any->addTransferEncHandler( $name, <$class|$object> )"
Inherited, see "Internals" in Mail::Message::Body::Encode
.ie n .IP $obj\->\fBcontentInfoFrom\fR($head) 4
.el .IP \f(CW$obj\fR\->\fBcontentInfoFrom\fR($head) 4
.IX Item "$obj->contentInfoFrom($head)"
Inherited, see "Internals" in Mail::Message::Body
.ie n .IP $obj\->\fBcontentInfoTo\fR($head) 4
.el .IP \f(CW$obj\fR\->\fBcontentInfoTo\fR($head) 4
.IX Item "$obj->contentInfoTo($head)"
Inherited, see "Internals" in Mail::Message::Body
.ie n .IP "$obj\->\fBfileLocation\fR( [$begin, $end] )" 4
.el .IP "\f(CW$obj\fR\->\fBfileLocation\fR( [$begin, \f(CW$end\fR] )" 4
.IX Item "$obj->fileLocation( [$begin, $end] )"
Inherited, see "Internals" in Mail::Message::Body
.ie n .IP $obj\->\fBgetTransferEncHandler\fR($type) 4
.el .IP \f(CW$obj\fR\->\fBgetTransferEncHandler\fR($type) 4
.IX Item "$obj->getTransferEncHandler($type)"
Inherited, see "Internals" in Mail::Message::Body::Encode
.ie n .IP $obj\->\fBisModified\fR() 4
.el .IP \f(CW$obj\fR\->\fBisModified\fR() 4
.IX Item "$obj->isModified()"
Inherited, see "Internals" in Mail::Message::Body
.ie n .IP $obj\->\fBload\fR() 4
.el .IP \f(CW$obj\fR\->\fBload\fR() 4
.IX Item "$obj->load()"
Inherited, see "Internals" in Mail::Message::Body
.ie n .IP "$obj\->\fBmodified\fR( [BOOLEAN] )" 4
.el .IP "\f(CW$obj\fR\->\fBmodified\fR( [BOOLEAN] )" 4
.IX Item "$obj->modified( [BOOLEAN] )"
Inherited, see "Internals" in Mail::Message::Body
.ie n .IP "$obj\->\fBmoveLocation\fR( [$distance] )" 4
.el .IP "\f(CW$obj\fR\->\fBmoveLocation\fR( [$distance] )" 4
.IX Item "$obj->moveLocation( [$distance] )"
Inherited, see "Internals" in Mail::Message::Body
.ie n .IP "$obj\->\fBread\fR( $parser, $head, $bodytype, [$chars, [$lines]] )" 4
.el .IP "\f(CW$obj\fR\->\fBread\fR( \f(CW$parser\fR, \f(CW$head\fR, \f(CW$bodytype\fR, [$chars, [$lines]] )" 4
.IX Item "$obj->read( $parser, $head, $bodytype, [$chars, [$lines]] )"
Inherited, see "Internals" in Mail::Message::Body
.SS "Error handling"
.IX Subsection "Error handling"
Extends "Error handling" in Mail::Message::Body.
.ie n .IP $obj\->\fBAUTOLOAD\fR() 4
.el .IP \f(CW$obj\fR\->\fBAUTOLOAD\fR() 4
.IX Item "$obj->AUTOLOAD()"
Inherited, see "Error handling" in Mail::Message::Body
.ie n .IP $obj\->\fBnotImplemented\fR() 4
.el .IP \f(CW$obj\fR\->\fBnotImplemented\fR() 4
.IX Item "$obj->notImplemented()"
Inherited, see "Error handling" in Mail::Reporter
.ie n .IP $obj\->\fBnotImplemented\fR() 4
.el .IP \f(CW$obj\fR\->\fBnotImplemented\fR() 4
.IX Item "$obj->notImplemented()"
Inherited, see "Error handling" in Mail::Reporter
.SS Cleanup
.IX Subsection "Cleanup"
Extends "Cleanup" in Mail::Message::Body.
.ie n .IP $obj\->\fBDESTROY\fR() 4
.el .IP \f(CW$obj\fR\->\fBDESTROY\fR() 4
.IX Item "$obj->DESTROY()"
Inherited, see "Cleanup" in Mail::Reporter
.ie n .IP $obj\->\fBDESTROY\fR() 4
.el .IP \f(CW$obj\fR\->\fBDESTROY\fR() 4
.IX Item "$obj->DESTROY()"
Inherited, see "Cleanup" in Mail::Reporter
.SH DETAILS
.IX Header "DETAILS"
Extends "DETAILS" in Mail::Message::Body.
.SH DIAGNOSTICS
.IX Header "DIAGNOSTICS"
.IP "Warning: Content\-Transfer\-Encoding \*(Aq$te\*(Aq requires explicit charset, defaulted to utf\-8." 4
.IX Item "Warning: Content-Transfer-Encoding '$te' requires explicit charset, defaulted to utf-8."
Cast by \f(CWencode()\fR
.ie n .IP "Error: cannot concatenate element $which" 4
.el .IP "Error: cannot concatenate element \f(CW$which\fR" 4
.IX Item "Error: cannot concatenate element $which"
Cast by \f(CWconcatenate()\fR
.ie n .IP "Fault: cannot open $file to write body: $!" 4
.el .IP "Fault: cannot open \f(CW$file\fR to write body: $!" 4
.IX Item "Fault: cannot open $file to write body: $!"
Cast by \f(CWwrite()\fR
.IP "Warning: charset \*(Aq$name\*(Aq is not known." 4
.IX Item "Warning: charset '$name' is not known."
The encoding or decoding of a message body encounters a character set which
is not understood by Perl\*(Aqs Encode module.
Cast by \f(CWencode()\fR
.ie n .IP "Error: class $package does not implement method $method." 4
.el .IP "Error: class \f(CW$package\fR does not implement method \f(CW$method\fR." 4
.IX Item "Error: class $package does not implement method $method."
Fatal error: the specific \f(CW$package\fR (or one of its superclasses) does not
implement this method where it should. This message means that some other
related classes do implement this method however the class at hand does
not.  Probably you should investigate this and probably inform the author
of the package.
Cast by \f(CWnotImplemented()\fR
.ie n .IP "Error: class $package does not implement method $method." 4
.el .IP "Error: class \f(CW$package\fR does not implement method \f(CW$method\fR." 4
.IX Item "Error: class $package does not implement method $method."
Fatal error: the specific \f(CW$package\fR (or one of its superclasses) does not
implement this method where it should. This message means that some other
related classes do implement this method however the class at hand does
not.  Probably you should investigate this and probably inform the author
of the package.
Cast by \f(CWnotImplemented()\fR
.ie n .IP "Error: data not convertible to a message (type is $class)" 4
.el .IP "Error: data not convertible to a message (type is \f(CW$class\fR)" 4
.IX Item "Error: data not convertible to a message (type is $class)"
Cast by \f(CWnew()\fR
.ie n .IP "Fault: error closing $file after write body: $!" 4
.el .IP "Fault: error closing \f(CW$file\fR after write body: $!" 4
.IX Item "Fault: error closing $file after write body: $!"
Cast by \f(CWwrite()\fR
.IP "Warning: no decoder defined for transfer encoding \*(Aq$encoding\*(Aq." 4
.IX Item "Warning: no decoder defined for transfer encoding '$encoding'."
The data (message body) is encoded in a way which is not currently understood,
therefore no decoding (or recoding) can take place.
Cast by \f(CWencode()\fR
.IP "Warning: no encoder defined for transfer encoding \*(Aq$encoding\*(Aq." 4
.IX Item "Warning: no encoder defined for transfer encoding '$encoding'."
The data (message body) has been decoded, but the required encoding is
unknown.  The decoded data is returned.
Cast by \f(CWencode()\fR
.IP "Error: no filename parameter for \fBwrite()\fR body." 4
.IX Item "Error: no filename parameter for write() body."
Cast by \f(CWwrite()\fR
.IP "Error: part number needs multi\-part or nested." 4
.IX Item "Error: part number needs multi-part or nested."
Cast by \f(CWpartNumberOf()\fR
.IP "Error: unknown line terminator \*(Aq$eol\*(Aq." 4
.IX Item "Error: unknown line terminator '$eol'."
Cast by \f(CWeol()\fR
.IP "Error: you cannot use foreachLine on a nested." 4
.IX Item "Error: you cannot use foreachLine on a nested."
\&\fBforeachLine()\fR should be used on decoded message bodies only, because
it would modify the header of the encapsulated message. which is
clearly not acceptable.
Cast by \f(CWforeachLine()\fR
.SH "SEE ALSO"
.IX Header "SEE ALSO"
This module is part of Mail\-Message version 4.01,
built on December 13, 2025. Website: \fIhttp://perl.overmeer.net/CPAN/\fR
.SH LICENSE
.IX Header "LICENSE"
For contributors see file ChangeLog.
.PP
This software is copyright (c) 2001\-2025 by Mark Overmeer.
.PP
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.