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272 lines
12 KiB
Plaintext
272 lines
12 KiB
Plaintext
These are the interfaces for some of the objects you'll deal with if
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you code for Supybot.
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ircmsgs.IrcMsg:
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This is the object that represents an IRC message. It has
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several methods and attributes. The most important thing
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about this class, however, is that it *is* hashable, and thus
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*cannot* be modified. Do not change any attributes; any code
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that modifies an IRC message is *broken* and should not
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exist.
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Interesting Methods:
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__init__: One of the more complex initializers in
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a class. It can be used in three different ways:
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1) It can be given a string, as one received from
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the server, which it will then parse into its
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separate components and instantiate the class
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with those components as attributes.
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2) It can be given a command, some (optional)
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arguments, and a (optional) prefix, and will
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instantiate the class with those components as
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attributes.
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3) It can be given, in addition to any of the
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above arguments, a 'msg' keyword argument that
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will use the attributes of msg as defaults.
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This exists to make it easier to copy
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messages, since the class is immutable.
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__str__: This returns the message in a string form
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suitable for sending to a server.
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__repr__: This returns the message in a form
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suitable for eval(), assuming the name "IrcMsg" is
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in your namespace and is bound to this class.
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Interesting Attributes:
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This is the meat of this class. These are
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generally what you'll be looking at with IrcMsgs.
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command: This is the command of the IrcMsg --
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PRIVMSG, NOTICE, WHOIS, etc.
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args: This is a tuple of the arguments to the
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IrcMsg. Some messages have arguments, some don't,
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depending on what command they are. You are, of
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course, always assured that args exists and is a
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tuple, though it might be empty.
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prefix: This is the hostmask of the person/server
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the message is from. In general, you won't be
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setting this on your outgoing messages, but
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incoming messages will always have one. This is
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the whole hostmask; if the message was received
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from a server, it'll be the server's hostmask; if
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the message was received from a user, it'll be the
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whole user hostmask. In that case, however, it's
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also parsed out into the nick/user/host
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attributes, which are probably more useful to
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check for many purposes.
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nick: If the message was sent by a user, this will
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be the nick of the user. If it was sent by a
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server, this will be the server's name (something
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like calvino.freenode.net or similar).
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user: If the message was sent by a user, this will
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be the user string of the user -- what they put
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into their IRC client for their "full name." If
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it was sent by a server, it'll be the server's
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name, again.
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host: If the message was sent by a user, this will
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be the host portion of their hostmask. If it was
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sent by a server, it'll be the server's name (yet
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again :))
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irclib.Irc:
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This is the object to handle everything about IRC except the
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actual connection to the server itself. (*NOTE* that the
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object actually received by commands in subclasses of
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callbacks.Privmsg is an IrcObjectProxy, which is described
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later. It augments the following interface with several
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methods of its own to help plugin authors.)
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Interesting Methods:
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The two following messages (queueMsg and
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sendMsg) are the methods by far most commonly
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called by plugin authors. They're generally
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the only methods you need to pay attention to
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if you're writing plugins.
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queueMsg: Queues a message for sending to the
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server. The queue is generally FIFO, but it
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does prioritize messages based on their command.
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sendMsg: Queues a message for sending to the
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server prior to any messages in the normal
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queue. This is exactly a FIFO queue, no
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reordering is done at all.
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The following two methods are the most important
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for people writing new IrcDrivers. Otherwise,
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you really don't need to pay attention to them.
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feedMsg: Feeds the Irc object a message for it
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handle appropriately, as well as passing it on
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to callbacks.
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takeMsg: If the Irc object has a message it's
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ready to send to the server, this will return
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it. Otherwise, it will return None.
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The next several methods are of far more marginal
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utility. But someone may need them, so they're
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documented here.
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addCallback: Takes a callback to add to the list
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of callbacks in the Irc object. See the
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interface for IrcCallback for more information.
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getCallback: Gets a callback by name, if it is
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in the Irc object's list of callbacks. If it
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it isn't, returns None.
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removeCallback: Removes a callback by name.
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Returns a list of the callbacks removed (since
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it is technically possible to have multiple
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callbacks with the same name. This list may
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be empty.
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__init__: Requires a nick. Optional arguments
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include user and ident, which default to the
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nick given, password, which defaults to the empty
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password, and callbacks, a list of callbacks
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(which defaults to nothing, an empty list).
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reset: Resets the Irc object to its original
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state, as well as sends a reset() to every
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callbacks.
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die: Kills the IRC object and all its callbacks.
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Interesting attributes:
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nick: The current nick of the bot.
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prefix: The current prefix of the bot.
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server: The current server the bot is connected to.
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network: The current network name the bot is connected to.
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afterConnect: False until the bot has received a
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command sent after the connection is finished --
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376, 377, or 422.
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state: An IrcState object for this particular
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connection. See the interface for the IrcState
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object for more information.
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irclib.IrcCallback:
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Interesting Methods:
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name: Returns the name of the callback. The
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default implementation simply returns the name
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of the class.
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__call__: Called by the Irc object with itself
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and the message whenever a message is fed to
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the Irc object. Nothing is done with the return
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value.
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inFilter: Called by the Irc object with itself
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and the message whenever a message is fed to
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the Irc object. The return value should be an
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IrcMsg object to be passed to the next callback
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in the Irc's list of callbacks. If None is
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returned, all processing stops. This gives
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callbacks an oppurtunity to "filter" incoming
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messages before general callbacks are given
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them.
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outFilter: Basically equivalent to inFilter,
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except instead of being called on messages
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as they enter the Irc object, it's called on
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messages as they leave the Irc object.
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die: Called when the parent Irc is told to
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die. This gives callbacks an oppurtunity to
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close open files, network connections, or
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databases before they're deleted.
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reset: Called when the parent Irc is told to
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reset (which is generally when reconnecting
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to the server). Most callbacks don't need
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to define this.
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Interesting attributes:
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priority: Determines the priority of the
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callback in the Irc object's list of
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callbacks. Defaults to 99; the valid range
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includes 0 through sys.maxint-1 (don't use
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sys.maxint itself, that's reserved for the
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Misc plugin). The lower the number, the
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higher the priority. High priority
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callbacks are called earlier in the
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inFilter cycle, earlier in the __call__
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cycle, and later in the outFilter cycle --
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basically, they're given the first chances
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on the way in and the last chances on the
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way out.
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callbacks.IrcObjectProxy:
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IrcObjectProxy is a proxy for an irclib.Irc instance that
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serves to provide a much fuller interface for handling
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replies and errors as well as to handle the nesting of
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commands. This is what you'll be dealing with almost all the
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time when writing commands; when writing doCommand methods
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(the kind you read about in the interface description of
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irclib.IrcCallback) you'll be dealing with plain old
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irclib.Irc objects.
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Interesting methods:
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reply: Called to reply to the current message
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with a string that is to be the reply.
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replySuccess, replyError: These reply with the
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configured responses for success and generic
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error, respectively. If an additional argument
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is given, it's (intelligently) appended to the
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generic message to be more specific.
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error: Called to send an error reply to the
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current message; not only does the response
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indicate an error, but commands that error out
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break the nested-command chain, which is
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generally useful for not confusing the user :)
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errorNoCapability: Like error, except it accepts
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the capability that's missing and integrates it
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into the configured error message for such
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things. Also accepts an additional string for a
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more descriptive message, if that's what you
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want.
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errorPossibleBug, errorNotRegistered,
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errorNoUser, errorRequiresPrivacy: These methods
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reply with the appropriate configured error
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message for the conditions in their names; they
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all take an additional arguments to be more
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specific about the conditions they indicate, but
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this argument is very rarely necessary.
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getRealIrc: Returns the actual Irc object being
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proxied for.
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replies: Sends a collection of messages to a given
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target, much like reply; except in this case, the user
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can configure whether the messages will be sent
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one-by-one or combined into a single message. Thus, the
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method accepts a "prefixer" argument, which prefixes the
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messages with a given string (or according to a given
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function), a "joiner" string (or function) used to join
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the messages into a single message if necessary, and an
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onlyPrefixFirst argument which determines whether only
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the first message will be prefixed when the messages are
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sent separately (it defaults to False).
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