Provided by: libmail-message-perl_3.006-1_all 
NAME
Mail::Message::Head::ListGroup - mailinglist related header fields
INHERITANCE
Mail::Message::Head::ListGroup
is a Mail::Message::Head::FieldGroup
is a Mail::Reporter
SYNOPSIS
my $lg = Mail::Message::Head::ListGroup->new(head => $head, ...);
$head->addListGroup($lg);
my $lg = $head->addListGroup(...);
$lg->delete;
DESCRIPTION
A list group is a set of header fields which are added by mailing-list managing software.
This class knowns various details about that software.
The knowledge and test messages which are used to initially implement this module is taken
from Mail::ListDetector, written by Michael Stevens <mailto:michael@etla.org>. The logic
is redesigned to add flexibility and use the powerful MailBox features.
Extends "DESCRIPTION" in Mail::Message::Head::FieldGroup.
METHODS
Extends "METHODS" in Mail::Message::Head::FieldGroup.
Constructors
Extends "Constructors" in Mail::Message::Head::FieldGroup.
$obj->address()
Returns a Mail::Message::Field::Address object (or "undef") which defines the posting
address of the mailing list.
$obj->clone()
Inherited, see "Constructors" in Mail::Message::Head::FieldGroup
$obj->from($head|$message)
Create a "Mail::Message::Head::ListGroup" based in the specified $message or message
$head.
$obj->implementedTypes()
Mail::Message::Head::ListGroup->implementedTypes()
Inherited, see "Constructors" in Mail::Message::Head::FieldGroup
$obj->listname()
Returns the name of the mailing list, which is usually a part of the e-mail address
which is used to post the messages to.
Mail::Message::Head::ListGroup->new($fields, %options)
Construct an object which maintains one set of mailing list headers
-Option --Defined in --Default
address undef
head Mail::Message::Head::FieldGroup undef
listname <derived from address>
log Mail::Reporter 'WARNINGS'
rfc undef
software Mail::Message::Head::FieldGroup undef
trace Mail::Reporter 'WARNINGS'
type Mail::Message::Head::FieldGroup undef
version Mail::Message::Head::FieldGroup undef
address => STRING|OBJECT
Address of the mailing list, which may be specified as STRING or e-mail containing
object (a Mail::Address or Mail::Identity. In any case, the data is converted into
a Mail::Identity.
head => HEAD
listname => STRING
A short textual representation of the mailing-list.
log => LEVEL
rfc => 'rfc2919'|'rfc2369'
Defines the mailing list software follows an rfc.
software => STRING
trace => LEVEL
type => STRING
version => STRING
$obj->rfc()
When the mailing list software follows the guidelines of one of the dedicated RFCs,
then this will be returned otherwise "undef". The return values can be "rfc2919",
"rfc2369", or "undef".
The header
Extends "The header" in Mail::Message::Head::FieldGroup.
$obj->add( <$field, $value> | $object )
Inherited, see "The header" in Mail::Message::Head::FieldGroup
$obj->addFields( [$fieldnames] )
Inherited, see "The header" in Mail::Message::Head::FieldGroup
$obj->attach($head)
Inherited, see "The header" in Mail::Message::Head::FieldGroup
$obj->delete()
Inherited, see "The header" in Mail::Message::Head::FieldGroup
$obj->fieldNames()
Inherited, see "The header" in Mail::Message::Head::FieldGroup
$obj->fields()
Inherited, see "The header" in Mail::Message::Head::FieldGroup
$obj->head()
Inherited, see "The header" in Mail::Message::Head::FieldGroup
Access to the header
Extends "Access to the header" in Mail::Message::Head::FieldGroup.
$obj->isListGroupFieldName($name)
Mail::Message::Head::ListGroup->isListGroupFieldName($name)
$obj->software()
Inherited, see "Access to the header" in Mail::Message::Head::FieldGroup
$obj->type()
Inherited, see "Access to the header" in Mail::Message::Head::FieldGroup
$obj->version()
Inherited, see "Access to the header" in Mail::Message::Head::FieldGroup
Internals
Extends "Internals" in Mail::Message::Head::FieldGroup.
$obj->collectFields()
Scan the header for fields which are usually contained in mailing list software. This
method is automatically called when a list group is constructed from() an existing
header or message.
Returned are the names of the list header fields found, in scalar context the amount.
An empty list/zero indicates that this is not a mailing list message.
Please warn the author of MailBox if you see that to few or too many fields are
included.
$obj->detected($type, $software, $version)
Inherited, see "Internals" in Mail::Message::Head::FieldGroup
Error handling
Extends "Error handling" in Mail::Message::Head::FieldGroup.
$obj->AUTOLOAD()
Inherited, see "Error handling" in Mail::Reporter
$obj->addReport($object)
Inherited, see "Error handling" in Mail::Reporter
$obj->defaultTrace( [$level]|[$loglevel, $tracelevel]|[$level, $callback] )
Mail::Message::Head::ListGroup->defaultTrace( [$level]|[$loglevel, $tracelevel]|[$level,
$callback] )
Inherited, see "Error handling" in Mail::Reporter
$obj->details()
Produce information about the detected/create list group, which may be helpful during
debugging, by default to the selected file handle.
$obj->errors()
Inherited, see "Error handling" in Mail::Reporter
$obj->log( [$level, [$strings]] )
Mail::Message::Head::ListGroup->log( [$level, [$strings]] )
Inherited, see "Error handling" in Mail::Reporter
$obj->logPriority($level)
Mail::Message::Head::ListGroup->logPriority($level)
Inherited, see "Error handling" in Mail::Reporter
$obj->logSettings()
Inherited, see "Error handling" in Mail::Reporter
$obj->notImplemented()
Inherited, see "Error handling" in Mail::Reporter
$obj->print( [$fh] )
Inherited, see "Error handling" in Mail::Message::Head::FieldGroup
$obj->report( [$level] )
Inherited, see "Error handling" in Mail::Reporter
$obj->reportAll( [$level] )
Inherited, see "Error handling" in Mail::Reporter
$obj->trace( [$level] )
Inherited, see "Error handling" in Mail::Reporter
$obj->warnings()
Inherited, see "Error handling" in Mail::Reporter
Cleanup
Extends "Cleanup" in Mail::Message::Head::FieldGroup.
$obj->DESTROY()
Inherited, see "Cleanup" in Mail::Reporter
DETAILS
Mailing list fields
Detected lists
The Mail::Message::Head::ListGroup class can detect many different mailing lists, some of
which are very popular and some of which are rare.
Numerous fields in a header are added when the message is passed through a mailing list
server. Each list software has defined its own fields, sometimes woth conflicting
definitions. There are also two RFCs about mailing list: "rfc2919" and "rfc2369".
The following lists are currently detected. Between parenthesis is the string returned by
type() when that differs from the software name.
• CommuniGate
Legacy commercial MacOS implementation by Stalker Software Inc.
<http://www.stalker.com/mac/default.html>
• CommuniGate Pro (CommuniGatePro)
Commercial rfc2919 compliant implementation by Stalker Software Inc.
<http://www.stalker.com>
• Ecartis
Commercial mailing list manager, formerly known as Listar. Produced by NodeRunner
Computing. See <http://www.ecartis.com>.
• Ezmlm
Open Source mailing list manager, available from <http://www.ezmlm.org>.
• FML
Open Source mailing list manager, see <http://www.fml.org>.
• Listar
Old name for Ecartis.
• Listbox
Mailing lists defined at <http://listbox.com>.
• Mailman
GNU's mailing list manager, available from <http://www.list.org>.
• Majordomo
Free (licenced) mailing list manager by Great Circle Associates, available from
<http://www.greatcircle.com/majordomo/>
• Smartlist
Related to procmail, as expressed by their shared main page at
<http://www.procmail.org/>.
• Yahoo! Groups (YahooGroups)
Mailing lists defined at <http://groups.yahoo.com>.
• Listserv
Commercial mailing list manager, produced by L-Soft. See <http://www.lsoft.com/>.
DIAGNOSTICS
Error: Cannot convert "$string" into an address object
The new(address) is coerced into a Mail::Message::Field::Address, which fails. Have a
look at Mail::Message::Field::Address::coerce() to see what valid arguments are.
Error: Package $package does not implement $method.
Fatal error: the specific package (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.
SEE ALSO
This module is part of Mail-Message distribution version 3.006, built on January 24, 2018.
Website: http://perl.overmeer.net/CPAN/
LICENSE
Copyrights 2001-2018 by [Mark Overmeer]. For other contributors see ChangeLog.
This program is free software; you can redistribute it and/or modify it under the same
terms as Perl itself. See http://dev.perl.org/licenses/