--- /dev/null
+-*- mode: outline -*-
+
+This document is for Riece developers or those who are interested in
+the development.
+
+* Development process
+
+** Reporting bugs
+
+If you find a bug, please file it at
+https://savannah.nongnu.org/bugs/?group=riece
+
+** Getting the development source code
+
+We currently use Git. Follow the instructions below to build the
+development version.
+
+(1) checkout modules
+
+ git clone git://git.sv.gnu.org/riece.git
+
+(2) generate configure script
+
+ ./bootstrap
+
+(3) run the configure script
+
+ ./configure
+
+(4) build and install
+
+ make
+ make install
+
+* Source structure
+
+** Modules
+
+Riece consists of many elisp modules listed below, ordered by the
+number of dependencies they have.
+
+- riece-globals
+ This module defines global variables.
+
+- riece-options
+ This module defines user options.
+
+- riece-version
+ This module defines the version of Riece.
+
+- riece-coding
+ This module provides functions which support character code conversions.
+
+- riece-complete
+ This module provides functions which support tab completion feature
+ in a mini buffer.
+
+- riece-addon
+ This module manages add-ons.
+
+- riece-mode
+ This module manages modes of riece-channel/riece-user objects.
+
+- riece-identity
+ This module defines the riece-identity object type which represents
+ global names of riece-channel/riece-user objects.
+
+- riece-channel
+ This module defines the riece-channel object type.
+
+- riece-user
+ This module defines the riece-user object type.
+
+- riece-misc
+ This module provides miscellaneous functions.
+
+- riece-signal
+ This module defines the riece-signal object type used to manage
+ display events.
+
+- riece-layout
+ This module manages window layouts.
+
+- riece-display
+ This module manages display events.
+
+- riece-server
+ This module manages connections to IRC servers.
+
+- riece-naming
+ This module is a so called the Mediator design pattern. It knows
+ relationships of riece-channel/riece-user objects.
+
+- riece-message
+ This module defines the riece-message object type.
+
+- riece-filter
+ This module only provides the process filter function.
+
+- riece-handle
+ This module provides handler functions for IRC messages. These
+ functions are called from riece-filter.
+
+- riece-000
+ This module provides handler functions for numeric replies whose
+ response codes are in 000 to 100 range. These handlers are called
+ from riece-filter.
+
+- riece-200
+ This module provides handler functions for numeric replies whose
+ response codes are in 200 to 300 range. These handlers are called
+ from riece-filter.
+
+- riece-300
+ This module provides handler functions for numeric replies whose
+ response codes are in 300 to 400 range. These handlers are called
+ from riece-filter.
+
+- riece-400
+ This module provides handler functions for numeric replies whose
+ response codes are in 400 to 500 range. These handlers are called
+ from riece-filter.
+
+- riece-500
+ This module provides handler functions for numeric replies whose
+ response codes are in 500 to 600 range. These handlers are called
+ from riece-filter.
+
+- riece-commands
+ This module provides user commands.
+
+- riece-irc
+ This module provides the binding for the IRC protocol.
+
+- riece
+ This module is the entry point of M-x riece.
+
+** Namespace management
+
+Riece is capable to connect to several IRC servers.
+
+Riece has separate namespace (obarray) for each connection. These
+namespaces can be accessed as buffer local variables of process
+buffer.
+
+*** Obtaining server buffer
+
+To access to the buffer local variables of process buffer, it is
+needed to distinguish process object of each connection by its name.
+
+It can be known by:
+
+(1) checking the value of riece-overriding-server-name,
+
+(2) checking the value of riece-server-name,
+ (If the variable riece-server-name is local to the current buffer,
+ you are already in the process buffer.)
+
+(3) or parsing riece-identity objects
+
+Once you get the name of the IRC server, you can get the process
+object by passing the name to the function riece-server-process.
+
+*** riece-identity objects
+
+A riece-identity object represents a name of a channel/user. It is
+used to distinguish a channel/user among several servers.
+
+A riece-identity object is actually a vector, which consists of two
+elements listed below.
+
+- prefix
+ A channel/user name local to an IRC server.
+
+- server
+ The name of the IRC server.
+
+Methods to manipulate riece-identity object are listed below.
+
+- riece-make-identity prefix &optional server
+ Create a new riece-identity object. If the server argument is
+ omitted, it sets the server part to the value returned by the
+ riece-find-server-name function.
+
+- riece-identity-prefix identity
+ Return the prefix element from the given riece-identity object.
+
+- riece-identity-server identity
+ Return the server element from the given riece-identity object.
+
+- riece-identity-equal ident1 ident2
+ Return t, if two riece-identity objects are equal.
+
+- riece-identity-equal-no-server ident1 ident2
+ Return t, if two riece-identity objects are equal. This function
+ only consider a prefix part of a riece-identity object.
+
+- riece-identity-member elt list
+ Return non-nil if a riece-identity object is an element of a list.
+
+*** Channels and users
+
+A riece-channel object provides an abstraction of a channel.
+Likewise, a riece-user object provides an abstraction of a user.
+
+**** riece-channel objects
+
+A riece-channel object has many information about a channel. A
+riece-channel object is actually a vector whose seven elements are listed
+below.
+
+- users
+ A list of nicknames which are of users in this channel.
+
+- operators
+ A list of nicknames which are of channel operators in this channel.
+
+- speakers
+ A list of nicknames which are of users who have the right to speak
+ in this channel.
+
+- modes
+ An alist which represents modes of this channel.
+
+- banned
+ A list of patterns set by MODE +b.
+
+- invited
+ A list of patterns set by MODE +I.
+
+- uninvited
+ A list of patterns set by MODE +e.
+
+**** riece-user objects
+
+A riece-user object has many information about a user. A riece-user
+object is actually a vector whose four elements are listed below.
+
+- channels
+ A list of channel names this user is participating.
+
+- user-at-host
+ Connection information of this user, set in "<user>@<host>" format.
+
+- modes
+ An alist which represents modes of this user.
+
+- away
+ A flag represent whether this user is AWAY.
+
+**** The Mediator pattern
+
+The riece-naming module is used to manage relationships between
+channels and users. It utilizes the Mediator design pattern.
+
+Using the riece-naming module allows to safely access to the namespace
+rather than directly connects riece-channel/riece-user objects.
+
+The riece-naming module provides the following functions.
+
+- riece-naming-assert-join user-name channel-name
+ Assert that a user is a member of a channel.
+
+- riece-naming-assert-part user-name channel-name
+ Assert that a user is no longer a member of a channel.
+
+- riece-naming-assert-rename old-name new-name
+ Assert that a user changed his nickname.
+
+** Signals
+
+There is a mechanism to connect events and display objects (windows,
+buffers, and modeline indicators). This is done by signals.
+
+When it is needed to redraw, a signal is emitted. The concept of
+signals is corresponding to signals in generic window system toolkit
+such as Qt or GTK+.
+
+To emit a signal, use riece-emit-signal.
+
+- riece-emit-signal signal-name &rest args
+ Emit a signal named signal-name with args.
+
+To define a function called when a signal is emitted, use
+riece-connect-signal.
+
+- riece-connect-signal signal-name slot-function &optional
+ filter-function handback
+
+ Give a signal a slot-function. The slot-function gets two
+ arguments: the signal object itself and a handback object given as
+ the fourth argument of riece-connect-signal.
+
+ If the third argument filter-function is specified, the
+ slot-function is called conditionally. The filter-function gets the
+ signal object and returns nil or t. If the return value is nil, the
+ slot-function is not called.
+
+To access to a signal object, use the following functions.
+
+- riece-signal-name signal
+ Return the name of a signal.
+
+- riece-signal-args
+ Return the data of a signal.
+
+Below is a list of signal names reserved.
+
+- channel-list-changed
+ Need update the channel list.
+
+- user-list-changed
+ Need update the user list.
+ (This signal gets a riece-identity object as an argument which
+ represents the channel.)
+
+- channel-switched
+ A user selected another channel.
+
+- user-joined-channel
+ A user joined a channel.
+ (This signal gets two riece-identity objects as arguments
+ corresponding to the user and the channel respectively.)
+
+- user-left-channel
+ A user left a channel.
+ (This signal gets two riece-identity objects as arguments
+ corresponding to the user and the channel respectively.)
+
+- user-renamed
+ A user changed his nickname.
+ (This signal gets two riece-identity objects as arguments
+ corresponding to the old and the new nickname respectively.)
+
+- user-away-changed
+ A user changed his AWAY status.
+ (This signal gets a riece-identity object as an argument which
+ represents the user.)
+
+- user-operator-changed
+ A user changed his IRC operator status.
+ (This signal gets a riece-identity object as an argument which
+ represents the user.)
+
+- channel-topic-changed
+ A topic of a channel changed.
+ (This signal gets a riece-identity object as an argument which
+ represents the channel.)
+
+- channel-modes-changed
+ Modes of a channel changed.
+ (This signal gets a riece-identity object as an argument which
+ represents the channel.)
+
+- channel-operators-changed
+ A list of operators in a channel changed.
+ (This signal gets a riece-identity object as an argument which
+ represents the channel.)
+
+- channel-speakers-changed
+ A list of users who have the right to speak in a channel changed.
+ (This signal gets a riece-identity object as an argument which
+ represents the channel.)
+
+- buffer-freeze-changed
+ A buffer is frozen or unfrozen.
+ (This signal gets a buffer as an argument.)
+
+** Writing add-ons
+
+Elisp modules that satisfy add-on spec should provide the following
+functions.
+
+- <module-name>-requires (optional)
+ Return a list of names of other add-ons this add-on depends.
+
+- <module-name>-insinuate
+ Called on initialization of this module.
+
+- <module-name>-uninstall (optional)
+ Called on uninstallation of this module.
+
+- <module-name>-enable (optional)
+ Called when this add-on is enabled.
+
+- <module-name>-disable (optional)
+ Called when this add-on is disabled.
+
+It is recommended to set short explanation of the add-on to
+<module-name>-description variable which is displayed on add-on
+listing shown up by C-c ^ (M-x riece-command-list-addons).
+
+To see the add-on's enabled/disabled status, check riece-addon-enabled
+property set on <module-name> symbol.
+
+Riece does the following procedure on add-ons when startup.
+
+(1) Load add-ons listed in the riece-addons variable.
+
+(2) Call <module-name>-requires on each add-on (if exists) and build a
+ dependency graph.
+
+(3) Sort the dependency graph.
+
+(4) Call <module-name>-insinuate on each add-on in order of the
+ dependencies.
+
+(5) Call <module-name>-enable on each add-on, iff it supports
+ enabling/disabling and is not disabled explicitly.
+
+Add-ons are loaded from directories listed in load-path, or from
+~/.riece/addons/.
+
+** Handler hooks
+
+There are hooks called "handler hooks " which have special meaning in
+Riece. Handler hooks are called before/after processing IRC messages.
+
+- riece-<message>-hook
+ Called before processing an IRC message.
+
+- riece-after-<message>-hook
+ Called after processing an IRC message.
+
+Where <message> is a type of IRC message and consists only lowercase
+characters.
+
+If riece-<message>-hook returns non-nil, <message> is not processed.
+In this case riece-after-<message>-hook is not called.
+
+Handler hooks gets two arguments corresponding to prefix and
+parameters in RFC2812.
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