weechat/doc/en/weechat_user.en.asciidoc

= WeeChat user's guide
:author: Sébastien Helleu
:email: flashcode@flashtux.org
:lang: en
:toc2:
:toclevels: 3
:max-width: 100%


This manual documents WeeChat chat client, it is part of WeeChat.

Latest version of this document can be found on this page:
https://weechat.org/doc


[[introduction]]
== Introduction

WeeChat (Wee Enhanced Environment for Chat) is a free chat client, fast and
light, designed for many operating systems.

[[features]]
=== Features

Main features are:

* multi-protocols: IRC and Jabber (with script jabber.py or bitlbee/minbif)
* multi-servers connection (with SSL, IPv6, proxy)
* small, fast and light
* customizable and extensible with plugins and scripts
* compliant with IRC RFCs http://tools.ietf.org/html/rfc1459[1459],
  http://tools.ietf.org/html/rfc2810[2810],
  http://tools.ietf.org/html/rfc2811[2811],
  http://tools.ietf.org/html/rfc2812[2812] and
  http://tools.ietf.org/html/rfc2813[2813]
* multi-platform (GNU/Linux, *BSD, MacOS X, Windows and other)
* 100% GPL, free software

WeeChat homepage is here: https://weechat.org/

[[prerequisites]]
=== Prerequisites

In order to install WeeChat, you need:

* a running GNU/Linux system (with compiler tools for source
  package), or a compatible OS
* 'root' privileges (to install WeeChat in a system directory)
* some libraries (see <<dependencies,dependencies>>).

[[install]]
== Installation

[[binary_packages]]
=== Binary packages

Binary packages are available for many distributions, including:

* Debian (or any Debian compatible distribution):
  `apt-get install weechat-curses`
* Mandriva/RedHat (or any RPM compatible distribution):
  `rpm -i /path/to/weechat-x.y.z-1.i386.rpm`
* Gentoo: `emerge weechat`
* Arch Linux: `pacman -S weechat`
* Fedora Core: `yum install weechat`
* Sourcemage: `cast weechat`

Some additional packages may be useful, like weechat-plugins.

For other distributions, please look at your manual for installation
instructions.

[[source_package]]
=== Source package

WeeChat can be compiled with cmake or autotools (cmake is recommended way).

[NOTE]
On OS X, you can use http://brew.sh/[Homebrew]:
`brew install weechat --with-python --with-perl`
(for help: `brew info weechat`).

[[dependencies]]
==== Dependencies

Following table shows list of packages that are required or optional to
compile WeeChat.

[width="100%",cols="5,^3,^3,^3,.^13",options="header"]
|===
| Package ^(1)^ | Min version | Max version | Required | Feature

| cmake | | | *yes* |
  Build (autotools still possible, but cmake is recommended)

| pkg-config | | | *yes* |
  Detect installed libraries

| libncursesw5-dev ^(2)^ | | | *yes* |
  Ncurses interface

| libcurl4-gnutls-dev | | | *yes* |
  URL transfer

| zlib1g-dev | | | *yes* |
  Compression of packets in relay plugin (weechat protocol), script plugin

| libgcrypt20-dev | | | *yes* |
  Secured data, IRC SASL authentication (DH-BLOWFISH/DH-AES), script plugin

| libgnutls28-dev | 2.2.0 ^(3)^ | | |
  SSL connection to IRC server, support of SSL in relay plugin,
  IRC SASL authentication (ECDSA-NIST256P-CHALLENGE)

| gettext | | | |
  Internationalization (translation of messages; base language is English)

| ca-certificates | | | |
  Certificates for SSL connections

| libaspell-dev or libenchant-dev | | | |
  Aspell plugin

| python-dev | 2.5 ^(4)^ | | |
  Python plugin

| libperl-dev | | | |
  Perl plugin

| ruby2.1-dev | 1.8 | | |
  Ruby plugin

| liblua5.2-dev | | | |
  Lua plugin

| tcl-dev | 8.5 | | |
  Tcl plugin

| guile-2.0-dev | 2.0 | | |
  Guile (scheme) plugin

| libv8-dev | | 3.24.3 | |
  Javascript plugin

| asciidoc | 8.5.0 | | |
  Build man page and documentation

| source-highlight | | | |
  Syntax highlight for sources in documentation

| xsltproc, docbook-xml, docbook-xsl | | | |
  Build of man page

| libcpputest-dev | 3.4 | | |
  Run tests

| C++ compiler | | | |
  Run tests, javascript plugin
|===

[NOTE]
^(1)^ Name comes from the Debian GNU/Linux distribution, versions and package
names may be different in different distributions and versions. +
^(2)^ WeeChat can compile with libncurses5-dev, but it is *NOT* recommended (you
will have display bugs with wide chars). +
^(3)^ Gnutls ≥ 3.0.21 is required for IRC SASL authentication with mechanism
ECDSA-NIST256P-CHALLENGE. +
^(4)^ Recommended Python version is 2.7 (all scripts run fine with version 2.7,
but not with versions ≤ 2.6 or ≥ 3.0).

[[compile_with_cmake]]
==== Compile with cmake

* Installation in system directories (requires 'root' privileges):

----
$ mkdir build
$ cd build
$ cmake ..
$ make
% make install    (as root)
----

* Installation in custom directory:

----
$ mkdir build
$ cd build
$ cmake .. -DPREFIX=/path/to/directory
$ make
$ make install
----

Options can be used for cmake, with format: "-DOPTION=VALUE".

List of commonly used options:

[width="100%",cols="2m,2,5m,12",options="header"]
|===
| Option | Values | Default value | Description

| CMAKE_BUILD_TYPE | `Debug`, `Release`, `RelWithDebInfo`, `MinSizeRel` | |
  The type of build: `Debug` (or `RelWithDebInfo`) is recommended if you are
  running development version of WeeChat.

| PREFIX | directory | /usr/local |
  The directory where WeeChat will be installed.

| WEECHAT_HOME | directory | ~/.weechat |
  The default home directory when running WeeChat.

| CA_FILE | file | /etc/ssl/certs/ca-certificates.crt |
  File containing the certificate authorities.
  This is the default value of option
  <<option_weechat.network.gnutls_ca_file,weechat.network.gnutls_ca_file>>.

| ENABLE_ALIAS | `ON`, `OFF` | ON |
  Compile <<alias_plugin,Alias plugin>>.

| ENABLE_ASPELL | `ON`, `OFF` | ON |
  Compile <<aspell_plugin,Aspell plugin>>.

| ENABLE_CHARSET | `ON`, `OFF` | ON |
  Compile <<charset_plugin,Charset plugin>>.

| ENABLE_MAN | `ON`, `OFF` | OFF |
  Compile man page.

| ENABLE_DOC | `ON`, `OFF` | OFF |
  Compile documentation (it takes a long time, recommended only if you build
  a binary package embedding documentation or if you can't browse documentation
  online).

| ENABLE_ENCHANT | `ON`, `OFF` | OFF |
  Compile <<aspell_plugin,Aspell plugin>> with Enchant.

| ENABLE_EXEC | `ON`, `OFF` | ON |
  Compile <<exec_plugin,Exec plugin>>.

| ENABLE_FIFO | `ON`, `OFF` | ON |
  Compile <<fifo_plugin,Fifo plugin>>.

| ENABLE_GNUTLS | `ON`, `OFF` | ON |
  Enable Gnutls (for SSL).

| ENABLE_GUILE | `ON`, `OFF` | ON |
  Compile <<scripts_plugins,Guile plugin>> (Scheme).

| ENABLE_IRC | `ON`, `OFF` | ON |
  Compile <<irc_plugin,IRC plugin>>.

| ENABLE_JAVASCRIPT | `ON`, `OFF` | ON |
  Compile <<scripts_plugins,Javascript plugin>>.

| ENABLE_LARGEFILE | `ON`, `OFF` | ON |
  Support of large files.

| ENABLE_LOGGER | `ON`, `OFF` | ON |
  Compile <<logger_plugin,Logger plugin>>.

| ENABLE_LUA | `ON`, `OFF` | ON |
  Compile <<scripts_plugins,Lua plugin>>.

| ENABLE_NCURSES | `ON`, `OFF` | ON |
  Compile Ncurses interface.

| ENABLE_NLS | `ON`, `OFF` | ON |
  Enable NLS (translations).

| ENABLE_PERL | `ON`, `OFF` | ON |
  Compile <<scripts_plugins,Perl plugin>>.

| ENABLE_PYTHON | `ON`, `OFF` | ON |
  Compile <<scripts_plugins,Python plugin>>.

| ENABLE_PYTHON3 | `ON`, `OFF` | OFF |
  Compile <<scripts_plugins,Python plugin>> using Python 3 (*NOT* recommended
  because many scripts are not compatible with Python 3).

| ENABLE_RELAY | `ON`, `OFF` | ON |
  Compile <<relay_plugin,Relay plugin>>.

| ENABLE_RUBY | `ON`, `OFF` | ON |
  Compile <<scripts_plugins,Ruby plugin>>.

| ENABLE_SCRIPT | `ON`, `OFF` | ON |
  Compile <<scripts_plugins,Script plugin>>.

| ENABLE_SCRIPTS | `ON`, `OFF` | ON |
  Compile <<scripts_plugins,script plugins>> (Python, Perl, Ruby, Lua, Tcl,
  Guile, Javascript).

| ENABLE_TCL | `ON`, `OFF` | ON |
  Compile <<scripts_plugins,Tcl plugin>>.

| ENABLE_TRIGGER | `ON`, `OFF` | ON |
  Compile <<trigger_plugin,Trigger plugin>>.

| ENABLE_XFER | `ON`, `OFF` | ON |
  Compile <<xfer_plugin,Xfer plugin>>.

| ENABLE_TESTS | `ON`, `OFF` | OFF |
  Compile tests.
|===

The other options can be displayed with this command:

----
$ cmake -LA
----

Or with Curses interface:

----
$ ccmake ..
----

[[compile_with_autotools]]
==== Compile with autotools

[WARNING]
Only cmake is officially supported to build WeeChat. You should use autotools
only if you are not able to use cmake. +
Build with autotools requires more dependencies and is slower than with cmake.

* Installation in system directories (requires 'root' privileges):

----
$ ./autogen.sh
$ mkdir build
$ cd build
$ ../configure
$ make
% make install    (as root)
----

* Installation in custom directory:

----
$ ./autogen.sh
$ mkdir build
$ cd build
$ ../configure --prefix=/path/to/directory
$ make
$ make install
----

Options can be used for 'configure' script, they can be displayed with this
command:

----
$ ./configure --help
----

[[git_sources]]
=== Git sources

Warning: git sources are for advanced users: it may not compile or not be
stable. You're warned!

To get git sources, issue this command:

----
$ git clone https://github.com/weechat/weechat.git
----

Then follow instructions for source package (see
<<source_package,source package>>).

[[report_crashes]]
=== Report crashes

If you experienced crashes, or if you want to report any future WeeChat crash,
you have to:

* compile it with debug info (or install binary package with debug info)
* enable 'core' files on your system
* install gdb

[[debug_info]]
==== Debug info

If you're compiling with cmake:

----
$ cmake .. -DCMAKE_BUILD_TYPE=Debug
----

If you're compiling with autotools, debug is default (`--with-debug=1`).

If you installed a binary package, then install package 'weechat-dbg'.

[[core_files]]
==== Core files

To enable 'core' files, you can use option
<<option_weechat.startup.sys_rlimit,weechat.startup.sys_rlimit>>:

----
/set weechat.startup.sys_rlimit "core:-1"
----

For WeeChat ≤ 0.3.8 or if you want to enable core files even before WeeChat
starts, you can use `ulimit` command.

For example under Linux with 'bash' shell, add this line to your `~/.bashrc`:

----
ulimit -c unlimited
----

Or max size:

----
ulimit -c 200000
----

[[gdb_backtrace]]
==== Get backtrace with gdb

When WeeChat crashes, your system will create a file 'core' or 'core.12345'
('12345' is process id).
This file is created in directory where you have run WeeChat (this is *not*
directory where WeeChat is installed!).

For example if 'weechat' is installed in '/usr/bin/' and 'core' file is
in '/home/xxx/', then run gdb with this command:

----
gdb /usr/bin/weechat /home/xxx/core
----

Then under gdb, use command `bt full` to display backtrace.
You will see something like that:

----
(gdb) set logging file /tmp/crash.txt
(gdb) set logging on
Copying output to /tmp/crash.txt.
(gdb) bt full
#0  0x00007f9dfb04a465 in raise () from /lib/libc.so.6
#1  0x00007f9dfb04b8e6 in abort () from /lib/libc.so.6
#2  0x0000000000437f66 in weechat_shutdown (return_code=1, crash=1)
    at /some_path/src/core/weechat.c:351
#3  <signal handler called>
#4  0x000000000044cb24 in hook_process_timer_cb (arg_hook_process=0x254eb90,
    remaining_calls=<value optimized out>) at /some_path/src/core/wee-hook.c:1364
        hook_process = 0x254eb90
        status = <value optimized out>
#5  0x000000000044cc7d in hook_timer_exec ()
    at /some_path/src/core/wee-hook.c:1025
        tv_time = {tv_sec = 1272693881, tv_usec = 212665}
        ptr_hook = 0x2811f40
        next_hook = 0x0
#6  0x000000000041b5b0 in gui_main_loop ()
    at /some_path/src/gui/curses/gui-curses-main.c:319
        hook_fd_keyboard = 0x173b600
        tv_timeout = {tv_sec = 0, tv_usec = 0}
        read_fds = {fds_bits = {0 <repeats 16 times>}}
        write_fds = {fds_bits = {0 <repeats 16 times>}}
        except_fds = {fds_bits = {0 <repeats 16 times>}}
        max_fd = <value optimized out>
----

You must report this trace to developers, and tell them what action caused this
crash.

Thank you for your help!

[[debug_running_weechat]]
==== Debug a running WeeChat

To debug a running WeeChat (for example if WeeChat seems blocked), you can use
gdb with process id (replace '12345' with PID of weechat process):

----
gdb /usr/bin/weechat 12345
----

Then like for a crash, use command `bt full`:

----
(gdb) bt full
----

[[usage]]
== Usage

[[running_weechat]]
=== Running WeeChat

Command line arguments:

include::cmdline_options.en.asciidoc[]

To start WeeChat, issue this command:

----
$ weechat
----

When you run WeeChat for the first time, a default configuration file is
created, with default options. The default configuration file is:
'~/.weechat/weechat.conf'.

You can edit this file at your convenience to configure WeeChat or you can set
parameters with `/set` command in WeeChat (see
<<weechat_commands,WeeChat commands>>).

[[screen_layout]]
=== Screen layout

Example of terminal with WeeChat:

....
 ▼ bar "title"
┌───────────────────────────────────────────────────────────────────────────┐
│Welcome to #test, this is a test channel                                   │
│12:52:27   --> | Flashy (flashcode@weechat.org) has joined #test   │@Flashy│
│12:52:27    -- | Nicks #test: [@Flashy @joe +weebot peter]         │@joe   │
│12:52:27    -- | Channel #test: 4 nicks (2 ops, 1 voice, 1 normal) │+weebot│
│12:52:27    -- | Channel created on Tue Jan 27 06:30:17 2009       │peter  │
│12:54:15 peter | hey!                                              │       │
│12:55:01  @joe | hello                                             │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│[12:55] [6] [irc/freenode] 3:#test(+n){4}* [H: 4:#abc(2,5), 6]             │
│[@Flashy(i)] hi peter!█                                                    │
└───────────────────────────────────────────────────────────────────────────┘
 ▲ bars "status" and "input"                               bar "nicklist" ▲
....

Screen is composed by following areas:

* chat area (middle of screen) with chat lines, and for each line:
** time
** prefix (before "|")
** message (after "|")
* bars around chat area, default bars are:
** 'title' bar, above chat area
** 'status' bar, below chat area
** 'input' bar, below status bar
** 'nicklist' bar, on the right

Bar 'status' has following default items:

[width="100%",cols="^3,^4,10",options="header"]
|===
| Item                  | Example               | Description
| time                  | `[12:55]`             | Time
| buffer_last_number    | `[6]`                 | Number of last buffer in list
| buffer_plugin         | `[irc/freenode]`      | Plugin of current buffer (irc plugin can add IRC server name used by buffer)
| buffer_number         | `3`                   | Current buffer number
| buffer_name           | `#test`               | Current buffer name
| buffer_modes          | `+n`                  | IRC channel modes
| buffer_nicklist_count | `{4}`                 | Number of nicks in nicklist
| buffer_zoom           | !                     | `!` means the merged buffer is zoomed (only this one is displayed), empty value means all merged buffers are displayed
| buffer_filter         | `*`                   | Filtering indicator: `*` means some lines are filtered (hidden), empty value means all lines are displayed
| scroll                | `-MORE(50)-`          | Scroll indicator, with number of lines below last line displayed
| lag                   | `[Lag: 2.5]`          | Lag indicator, in seconds (hidden if lag is low)
| hotlist               | `[H: 4:#abc(2,5), 6]` | List of buffers with activity (unread messages) (in example, 2 highlights and 5 unread messages on '#abc', one unread message on buffer #6)
| completion            | `abc(2) def(5)`       | List of words for completion, with number of possible completions for each word
|===

Bar 'input' has following default items:

[width="100%",cols="^3,^4,10",options="header"]
|===
| Item         | Example                                      | Description
| input_prompt | `[@Flashy(i)]`                               | Input prompt, for irc: nick and modes (mode "+i" means invisible on freenode)
| away         | `(away)`                                     | Away indicator
| input_search | `[Search (~ str,msg)]`                       | Search indicator ("`~`": case insensitive, "`==`": case sensitive, "`str`": search string, "`regex`": search regular expression, "`msg`": search in messages, "`pre`": search in prefixes, "`pre\|msg`": search in prefixes and messages)
| input_paste  | `[Paste 7 lines ? [ctrl-Y] Yes [ctrl-N] No]` | Question to user for pasting lines
| input_text   | `hi peter!`                                  | Input text
|===

Other items available (not used in bars by default):

[width="100%",cols="^3,^4,10",options="header"]
|===
| Item              | Example             | Description
| aspell_dict       | `fr,en`             | Spelling dictionaries used on current buffer
| aspell_suggest    | `print,prone,prune` | Spelling suggestions for word under cursor (if misspelled)
| buffer_count      | `10`                | Total number of buffers opened
| buffer_short_name | `#test`             | Current buffer short name
| irc_channel       | `#test`             | Current IRC channel name
| irc_nick_modes    | `@`                 | IRC modes for self nick
| mouse_status      | `M`                 | Mouse status (empty if mouse is disabled)
| window_number     | `2`                 | Current window number
|===

[[buffers_and_windows]]
=== Buffers and windows

A 'buffer' is composed by a number, a name, lines displayed (and some other
data).

Examples of buffers:

* core buffer (created by WeeChat on startup, can not be closed)
* irc server (displays messages from server)
* irc channel
* irc private

A 'window' is a screen area which displays a buffer. It is possible to split
your screen into many windows.

Each window displays one buffer. A buffer can be hidden (not displayed by a
window) or displayed by one or more windows.

Example of horizontal split (`/window splith`):

....
                          ▼ window #2 (buffer #4)
┌───────────────────────────────────────────────────────────────────────────┐
│Welcome to #abc                                                            │
│12:55:12     Max | hi                                              │@Flashy│
│12:55:20 @Flashy | hi Max!                                         │Max    │
│12:55:32     Max | how are you?                                    │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│[12:55] [6] [irc/freenode] 4:#abc(+n){2}                                   │
│[@Flashy]                                                                  │
│───────────────────────────────────────────────────────────────────────────│
│Welcome to #test                                                           │
│12:54:15 peter | hey!                                              │@Flashy│
│12:55:01  @joe | hello                                             │@joe   │
│                                                                   │+weebot│
│                                                                   │peter  │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│[12:55] [6] [irc/freenode] 3:#test(+n){4}                                  │
│[@Flashy] hi peter!█                                                       │
└───────────────────────────────────────────────────────────────────────────┘
                          ▲ window #1 (buffer #3)
....

Example of vertical split (`/window splitv`):

....
┌───────────────────────────────────────────────────────────────────────────┐
│Welcome to #test                     │Welcome to #abc                      │
│12:54:15 peter | hey!        │@Flashy│12:55:12     Max | hi        │@Flashy│
│12:55:01  @joe | hello       │@joe   │12:55:20 @Flashy | hi Max!   │Max    │
│                             │+weebot│                             │       │
│                             │peter  │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│[12:55] [irc/oftc] 3:#test(+n){4}    │[12:55] [irc/oftc] 4:#abc(+n){2}     │
│[@Flashy] hi peter!█                 │[@Flashy]                            │
└───────────────────────────────────────────────────────────────────────────┘
      ▲ window #1 (buffer #3)               ▲ window #2 (buffer #4)
....

Example of vertical + horizontal splits:

....
                                            ▼ window #3 (buffer #5)
┌───────────────────────────────────────────────────────────────────────────┐
│Welcome to #test                     │Welcome to #def                      │
│12:54:15 peter | hey!        │@Flashy│12:55:42 @Flashy | hi        │@Flashy│
│12:55:01  @joe | hello       │@joe   │12:55:56    alex | hi Flashy │alex   │
│                             │+weebot│                             │       │
│                             │peter  │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │[12:55] [irc/oftc] 5:#def(+n){2}     │
│                             │       │[@Flashy]                            │
│                             │       │─────────────────────────────────────│
│                             │       │Welcome to #abc                      │
│                             │       │12:55:12     Max | hi        │@Flashy│
│                             │       │12:55:20 @Flashy | hi Max!   │Max    │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│                             │       │                             │       │
│[12:55] [irc/oftc] 3:#test(+n){4}    │[12:55] [irc/oftc] 4:#abc(+n){2}     │
│[@Flashy] hi peter!█                 │[@Flashy]                            │
└───────────────────────────────────────────────────────────────────────────┘
      ▲ window #1 (buffer #3)               ▲ window #2 (buffer #4)
....

[[bars]]
=== Bars

A 'bar' is an area beside the chat that can contain any type of text.

The bar options can be set with options `weechat.bar.name.option` where `name`
is the name of the bar and `option` the option for this bar.

List of bar options:

[width="100%",cols="2m,2,10",options="header"]
|===
| Option | Values | Description

| type | `root`, `window` |
  A bar with type `root` is displayed exactly one time on screen, outside all
  windows. There is no root bar by default, but an example is the bar 'buffers'
  created by script 'buffers.pl' (sidebar with list of buffers). +
  A bar with type `window` is displayed in each window, for example if you
  split one time the screen (with `/window splith` or `/window splitv`), you
  will have one bar in each window. The four default bars ('title', 'status',
  'input', 'nicklist') have type `window`.

| position | `top`, `bottom`, `left`, `right` |
  Position of the bar: above/below chat, on the left/right.

| priority | integer ≥ 0 |
  Priority for display of bar: this is used for ordering the bars on screen when
  many bars have same type and position. +
  The bars are displayed from the edge of the screen to the center. A higher
  priority will display bar at the beginning, so closer to the edge. +
  Example: 'input' bar has priority 1000, so it is displayed before the 'status'
  bar, which has priority 500.

| size | integer ≥ 0 |
  The size of the bar: number of columns for position left/right, number
  of lines for position top/bottom. A size of `0` means automatic, so the size
  will be computed according to content displayed in bar.

| size_max | integer ≥ 0 |
  The maximum size for a bar, `0` = no limit (this option is used only if
  `size` = `0`).

| color_bg | color |
  The default background color for the bar.

| color_fg | color |
  The default text color for the bar.

| color_delim | color |
  The color for delimiters in bar.

| hidden | `on`, `off` |
  When option is `on`, the bar is hidden. +
  Note: instead of changing this option, the command `/bar` is preferred, for
  example: `/bar toggle nicklist` (see command <<command_weechat_bar,/bar>>).

| separator | `on`, `off` |
  When option is `on`, a separator (line) is displayed between this bar and
  other bars (or chat).

| items | string |
  A list of 'items' (see <<bar_items,items>> for more info).

| filling_left_right | `horizontal`, `vertical`, `columns_horizontal`, `columns_vertical` |
  Type of filling for a bar which has position `left` or `right` (see
  <<bar_filling,filling>> for more info).

| filling_top_bottom | `horizontal`, `vertical`, `columns_horizontal`, `columns_vertical` |
  Type of filling for a bar which has position `top` or `bottom` (see
  <<bar_filling,filling>> for more info).

| conditions | string |
  The conditions to display the bar (see <<bar_conditions,conditions>> for more
  info).
|===

[[bar_items]]
==== Items

The option 'items' is a string with a list of bar items, separated by a comma
(space between items on screen) or "+" (glued items).

The list of bar items is displayed with command `/bar listitems`.

Before or after item name, you can use chars (that are not alphanumeric, "-" or
"_"). They will be displayed before/after item with the delimiters color
defined in bar (option 'color_delim').

Example of bar with items "[time],buffer_number+:+buffer_plugin+.+buffer_name":

....
┌───────────────────────────────────────────────────────────────────────────┐
│[12:55] 3:irc/freenode.#weechat                                            │
└───────────────────────────────────────────────────────────────────────────┘
....

A special syntax can be used to force the buffer used when displaying the bar
item: "@buffer:item" (where "buffer" is the full name of buffer and "item" is
the name of a bar item).

This is useful in root bars, to display item for a specific buffer which is
not displayed in the current window (or even not displayed at all).

Example: nicklist of bitlbee in a root bar (if the bar is called
'bitlist' and if bitlbee server is called 'bitlbee'):

----
/set weechat.bar.bitlist.items "@irc.bitlbee.&bitlbee:buffer_nicklist"
----

[[bar_filling]]
==== Filling

There are four types of filling:

* `horizontal`: the items are displayed horizontally, from left to right. If
  there are new lines in items, a space is used to separate lines.
* `vertical`: the items are displayed from top to bottom. If there are new
  lines in items, a new line is used to separate lines.
* `columns_horizontal`: items are displayed using columns, where text is
  aligned on the left. The first item is on top left, the second is on same
  line, on the right.
* `columns_vertical`: items are displayed using columns, where text is aligned
  on the left. The first item is on top left, the second is one line below.

Default bars 'title', 'status' and 'input' have 'horizontal' filling, and
default bar 'nicklist' has 'vertical' filling.

Some examples of filling for bar 'nicklist':

....
┌──────────────────────────────────────────────────┐
│Welcome to #test, this is a test channel          │
│12:54:15 peter | hey!                    │@carl   │
│12:55:01  +Max | hello                   │@jessika│
│                                         │@maddy  │
│                                         │%Diego  │
│                                         │%Melody │
│                                         │+Max    │
│                                         │ celia  │
│                                         │ Eva    │
│                                         │ freddy │
│                                         │ Harold^│
│                                         │ henry4 │
│                                         │ jimmy17│
│                                         │ jodie ▼│
│[12:55] [6] [irc/freenode] 3:#test(+n){24}        │
│[@carl] █                                         │
└──────────────────────────────────────────────────┘
                filling_left_right = vertical ▲

┌──────────────────────────────────────────────────┐
│Welcome to #test, this is a test channel          │
│12:54:15 peter | hey!           │@carl     lee    │
│12:55:01  +Max | hello          │@jessika  louise │
│                                │@maddy    mario  │
│                                │%Diego    mark   │
│                                │%Melody   peter  │
│                                │+Max      Rachel │
│                                │ celia    richard│
│                                │ Eva      sheryl │
│                                │ freddy   Vince  │
│                                │ Harold^  warren │
│                                │ henry4   zack   │
│                                │ jimmy17         │
│                                │ jodie           │
│[12:55] [6] [irc/freenode] 3:#test(+n){24}        │
│[@carl] █                                         │
└──────────────────────────────────────────────────┘
        filling_left_right = columns_vertical ▲

┌───────────────────────────────────────────────────────────────────────┐
│@carl    %Diego    celia    Harold^  jodie    mario    Rachel   Vince  │
│@jessika %Melody   Eva      henry4   lee      mark     richard  warren │
│@maddy   +Max      freddy   jimmy17  louise   peter    sheryl   zack   │
│───────────────────────────────────────────────────────────────────────│
│                                                                       │
        filling_top_bottom = columns_vertical ▲

┌───────────────────────────────────────────────────────────────────────┐
│@carl    @jessika @maddy   %Diego   %Melody  +Max      celia    Eva    │
│ freddy   Harold^  henry4   jimmy17  jodie    lee      louise   mario  │
│ mark     peter    Rachel   richard  sheryl   Vince    warren   zack   │
│───────────────────────────────────────────────────────────────────────│
│                                                                       │
      filling_top_bottom = columns_horizontal ▲
....

[[bar_conditions]]
==== Conditions

The option 'conditions' is a string which is evaluated to know if the bar
must be displayed or not.

The string can be:

* 'active': the window must be active
* 'inactive': the window must be inactive
* 'nicklist': the buffer displayed in window must have a nicklist
* an expression: it is evaluated as boolean (see command
  <<command_weechat_eval,/eval>>)

For the expression, following variables are available:

* `${active}`: true if window is active
* `${inactive}`: true if window is inactive
* `${nicklist}`: true if buffer displayed in window has a nicklist

Following pointers are available:

* `${window}`: the window where condition is evaluated
* `${buffer}`: the buffer of window where condition is evaluated

Example to display nicklist bar in all buffers with a nicklist, and only if
width of window is > 100 :

----
/set weechat.bar.nicklist.conditions "${nicklist} && ${window.win_width} > 100"
----

Same condition, but always display nicklist on buffer '&bitlbee' (even if window
is small):

----
/set weechat.bar.nicklist.conditions "${nicklist} && (${window.win_width} > 100 || ${buffer.full_name} == irc.bitlbee.&bitlbee)"
----

[[bare_display]]
=== Bare display

A special display, called "bare display" can be used for easy click on long URLs
and selection of text (using the mouse).

The bare display has following features:

* it displays only the content of current buffer: no window split neither bars
  (no title, nicklist, status, input, ...)
* the WeeChat mouse support is disabled (if it was enabled): you can use your
  mouse like you do in the terminal to click on URLs and select text
* ncurses is not used, therefore URLs are not cut at the end of lines.

The default key to enabled bare display is key[alt-l], and same key to exit (or
by default anything changing the input will exit the bare display, see option
<<option_weechat.look.bare_display_exit_on_input,weechat.look.bare_display_exit_on_input>>).

The time format can be customized with the option
<<option_weechat.look.bare_display_time_format,weechat.look.bare_display_time_format>>.

The bare display can be enabled for a specific delay using the command
<<command_weechat_window,/window>>.

If WeeChat looks like that:

....
┌───────────────────────────────────────────────────────────────────────────┐
│Welcome to #test, this is a test channel                                   │
│12:52:27   --> | Flashy (flashcode@weechat.org) has joined #test   │@Flashy│
│12:52:27    -- | Nicks #test: [@Flashy @joe +weebot peter]         │@joe   │
│12:52:27    -- | Channel #test: 4 nicks (2 ops, 1 voice, 1 normal) │+weebot│
│12:52:27    -- | Channel created on Tue Jan 27 06:30:17 2009       │peter  │
│12:54:15 peter | hey!                                              │       │
│12:55:01  @joe | peter: hook_process: https://weechat.org/files/do │       │
│               | c/devel/weechat_plugin_api.en.html#_weechat_hook_ │       │
│               | process                                           │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│                                                                   │       │
│[12:55] [6] [irc/freenode] 3:#test(+n){4}* [H: 4:#abc(2,5), 6]             │
│[@Flashy(i)] hi peter!█                                                    │
└───────────────────────────────────────────────────────────────────────────┘
....

The screen will look like that in bare display:

....
┌───────────────────────────────────────────────────────────────────────────┐
│                                                                           │
│                                                                           │
│                                                                           │
│                                                                           │
│                                                                           │
│                                                                           │
│                                                                           │
│                                                                           │
│                                                                           │
│                                                                           │
│                                                                           │
│                                                                           │
│                                                                           │
│12:52 --> Flashy (flashcode@weechat.org) has joined #test                  │
│12:52 -- Nicks #test: [@Flashy @joe +weebot peter]                         │
│12:52 -- Channel #test: 4 nicks (2 ops, 1 voice, 1 normal)                 │
│12:52 -- Channel created on Tue Jan 27 06:30:17 2009                       │
│12:54 <peter> hey!                                                         │
│12:55 <@joe> peter: hook_process: https://weechat.org/files/doc/devel/weech│
│at_plugin_api.en.html#_weechat_hook_process                                │
└───────────────────────────────────────────────────────────────────────────┘
....

So you can click the URL from 'joe' without any problem in your terminal (of
course this supposes that your terminal supports click on URLs).

[[notify_levels]]
=== Notify levels

Four levels are possible in messages displayed in buffers, from lower to higher:

* 'low': message with low importance (for example irc join/part/quit)
* 'message': message from a user
* 'private': message in a private buffer
* 'highlight': message with highlight

Each buffer has a notify level, which is used to decide what messages will add
buffer in hotlist.

The default notify level can be set using option
<<option_weechat.look.buffer_notify_default,weechat.look.buffer_notify_default>>,
default is 'all'.

[width="50%",cols="3m,10",options="header"]
|===
| Notify level | Level of messages added to hotlist
| none         | (none)
| highlight    | 'highlight' + 'private'
| message      | 'highlight' + 'private' + 'message'
| all          | 'highlight' + 'private' + 'message' + 'low'
|===

Notify level can be defined for a set of buffers, for example all buffers of
irc server "freenode":

----
/set weechat.notify.irc.freenode message
----

Set notify level 'highlight' on channel "#weechat" only:

----
/set weechat.notify.irc.freenode.#weechat highlight
----

The notify level for a buffer can be set with command `/buffer`:

----
/buffer notify highlight
----

[[key_bindings]]
=== Default key bindings

[[key_bindings_command_line]]
==== Keys for command line

[width="100%",cols="^.^3,.^10,.^5",options="header"]
|===
| Key             | Description | Command
| key[←]       .2+| Go to previous char in command line .2+| `/input move_previous_char`
| key[ctrl-b]
| key[→]       .2+| Go to next char in command line .2+| `/input move_next_char`
| key[ctrl-f]
| key[ctrl-←]  .2+| Go to previous word in command line .2+| `/input move_previous_word`
| key[alt-b]
| key[ctrl-→]  .2+| Go to next word in command line .2+| `/input move_next_word`
| key[alt-f]
| key[Home]    .2+| Go to the beginning of command line .2+| `/input move_beginning_of_line`
| key[ctrl-a]
| key[End]     .2+| Go to the end of command line .2+| `/input move_end_of_line`
| key[ctrl-e]
| key[ctrl-c,b]   | Insert code for bold text | `/input insert \x02`
| key[ctrl-c,c]   | Insert code for colored text | `/input insert \x03`
| key[ctrl-c,i]   | Insert code for italic text | `/input insert \x1D`
| key[ctrl-c,o]   | Insert code for color reset | `/input insert \x0F`
| key[ctrl-c,v]   | Insert code for reverse color | `/input insert \x16`
| key[ctrl-c,_]   | Insert code for underlined text | `/input insert \x1F`
| key[Del]     .2+| Delete next char in command line .2+| `/input delete_next_char`
| key[ctrl-d]
| key[Backsp.] .2+| Delete previous char in command line .2+| `/input delete_previous_char`
| key[ctrl-h]
| key[ctrl-k]     | Delete from cursor until end of command line (deleted string is copied to clipboard) | `/input delete_end_of_line`
| key[ctrl-r]     | Search for text in buffer history (see <<key_bindings_search_context,keys for search context>>) | `/input search_text`
| key[ctrl-t]     | Transpose chars | `/input transpose_chars`
| key[ctrl-u]     | Delete from cursor until beginning of command line (deleted string is copied to clipboard) | `/input delete_beginning_of_line`
| key[ctrl-w]     | Delete previous word of command line (deleted string is copied to clipboard) | `/input delete_previous_word`
| key[ctrl-y]     | Paste clipboard content | `/input clipboard_paste`
| key[ctrl-_]     | Undo last action on command line | `/input undo`
| key[alt-_]      | Redo last action on command line | `/input redo`
| key[Tab]        | Complete command or nick (key[Tab] again: find next completion) | `/input complete_next`
| key[shift-Tab]  | Without completion: do a partial completion, with pending completion: complete with previous completion | `/input complete_previous`
| key[Enter]   .3+| Execute command or send message (in search mode: stop search) .3+| `/input return`
| key[ctrl-j]
| key[ctrl-m]
| key[↑]          | Call previous command/message (in search mode: search up) | `/input history_previous`
| key[↓]          | Call next command/message (in search mode: search down) | `/input history_next`
| key[ctrl-↑]     | Call previous command/message in global history (common for all buffers) | `/input history_global_previous`
| key[ctrl-↓]     | Call next command/message in global history (common for all buffers) | `/input history_global_next`
| key[alt-d]      | Delete next word in command line (deleted string is copied to clipboard) | `/input delete_next_word`
| key[alt-k]      | Grab a key and insert its code (and command bound if key exists) in command line | `/input grab_key_command`
| key[alt-r]      | Delete entire command line | `/input delete_line`
| key[alt-s]      | Toggle aspell | `/mute aspell toggle`
|===

[[key_bindings_buffers_windows]]
==== Keys for buffers / windows

[width="100%",cols="^.^3,.^10,.^5",options="header"]
|===
| Key                | Description | Command
| key[ctrl-l]        | Redraw whole window | `/window refresh`
| key[ctrl-s,ctrl-u] | Set unread marker on all buffers | `/input set_unread`
| key[ctrl-x]        | Switch current buffer if buffers are attached with same number | `/input switch_active_buffer`
| key[alt-x]         | Zoom on merged buffer (key[alt-x] again: display all merged buffers) | `/input zoom_merged_buffer`
| key[PgUp]          | Scroll up one page in buffer history | `/window page_up`
| key[PgDn]          | Scroll down one page in buffer history | `/window page_down`
| key[alt-PgUp]      | Scroll up a few lines in buffer history | `/window scroll_up`
| key[alt-PgDn]      | Scroll down a few lines in buffer history | `/window scroll_down`
| key[alt-Home]      | Scroll to top of buffer | `/window scroll_top`
| key[alt-End]       | Scroll to bottom of buffer | `/window scroll_bottom`
| key[alt-←]      .4+| Switch to previous buffer .4+| `/buffer -1`
| key[alt-↑]
| key[ctrl-p]
| key[F5]
| key[alt-→]      .4+| Switch to next buffer .4+| `/buffer +1`
| key[alt-↓]
| key[ctrl-n]
| key[F6]
| key[F7]            | Switch to previous window | `/window -1`
| key[F8]            | Switch to next window | `/window +1`
| key[F9]            | Scroll buffer's title on the left | `/bar scroll title * -30%`
| key[F10]           | Scroll buffer's title on the right | `/bar scroll title * +30%`
| key[F11]           | Scroll up one page in nicklist | `/bar scroll nicklist * -100%`
| key[F12]           | Scroll down one page in nicklist | `/bar scroll nicklist * +100%`
| key[alt-F11]       | Go to the beginning of nicklist | `/bar scroll nicklist * b`
| key[alt-F12]       | Go to the end of nicklist | `/bar scroll nicklist * e`
| key[alt-a]         | Switch to next buffer with activity (with priority: highlight, message, other) | `/input jump_smart`
| key[alt-h]         | Clear hotlist (activity notification on other buffers) | `/input hotlist_clear`
| key[alt-j,alt-f]   | Switch to first buffer | `/buffer -`
| key[alt-j,alt-l]   | Switch to last buffer | `/buffer +`
| key[alt-j,alt-r]   | Switch to IRC raw buffer | `/server raw`
| key[alt-j,alt-s]   | Switch to IRC server buffer | `/server jump`
| key[alt-0...9]     | Switch to buffer by number (0 = 10) | `/buffer *N`
| key[alt-j,01...99] | Switch to buffer by number | `/buffer NN`
| key[alt-l]         | Toggle bare display on/off | `/window bare`
| key[alt-m]         | Toggle mouse | `/mouse toggle`
| key[alt-n]         | Scroll to next highlight | `/window scroll_next_highlight`
| key[alt-p]         | Scroll to previous highlight | `/window scroll_previous_highlight`
| key[alt-u]         | Scroll to first unread line in buffer | `/window scroll_unread`
| key[alt-w,alt-↑]   | Switch to window above | `/window up`
| key[alt-w,alt-↓]   | Switch to window below | `/window down`
| key[alt-w,alt-←]   | Switch to window on the left | `/window left`
| key[alt-w,alt-→]   | Switch to window on the right | `/window right`
| key[alt-w,alt-b]   | Balance the sizes of all windows | `/window balance`
| key[alt-w,alt-s]   | Swap buffers of two windows | `/window swap`
| key[alt-z]         | Zoom on current window (key[alt-z] again: restore initial windows state, before zoom) | `/window zoom`
| key[alt-]key[<]    | Switch to previous buffer in list of visited buffers | `/input jump_previously_visited_buffer`
| key[alt-]key[>]    | Switch to next buffer in list of visited buffers | `/input jump_next_visited_buffer`
| key[alt-/]         | Switch to last buffer displayed (before last jump to a buffer) | `/input jump_last_buffer_displayed`
| key[alt-=]         | Toggle filters on/off | `/filter toggle`
| key[alt--]         | Toggle filters on/off in current buffer | `/filter toggle @`
|===

[[key_bindings_search_context]]
==== Keys for "search" context

These keys are used in context "search" (when key[ctrl-r] is pressed to search
text in buffer).

[width="100%",cols="^.^3,.^10,.^5",options="header"]
|===
| Key           | Description | Command
| key[ctrl-r]   | Switch search type: string (default), regular expression | `/input search_switch_regex`
| key[alt-c]    | Switch exact case for search | `/input search_switch_case`
| key[Tab]      | Switch search in: messages (default), prefixes, prefixes + messages | `/input search_switch_where`
| key[↑]        | Search previous line | `/input search_previous`
| key[↓]        | Search next line | `/input search_next`
| key[Enter] .3+| Stop search .3+| `/input search_stop`
| key[ctrl-j]
| key[ctrl-m]
|===

[[key_bindings_cursor_context]]
==== Keys for "cursor" context

These keys are used in context "cursor" (free movement of cursor on screen).

[width="100%",cols="^.^3,^.^3,.^10,.^8",options="header"]
|===
| Key           | Area     | Description | Command
| key[↑]        | -        | Move cursor one line up | `/cursor move up`
| key[↓]        | -        | Move cursor one line down | `/cursor move down`
| key[←]        | -        | Move cursor one column left | `/cursor move left`
| key[→]        | -        | Move cursor one column right | `/cursor move right`
| key[alt-↑]    | -        | Move cursor one area up | `/cursor move area_up`
| key[alt-↓]    | -        | Move cursor one area down | `/cursor move area_down`
| key[alt-←]    | -        | Move cursor one area left | `/cursor move area_left`
| key[alt-→]    | -        | Move cursor one area right | `/cursor move area_right`
| key[m]        | chat     | Quote message | `hsignal:chat_quote_message;/cursor stop`
| key[q]        | chat     | Quote prefix + message | `hsignal:chat_quote_prefix_message;/cursor stop`
| key[Q]        | chat     | Quote time + prefix + message | `hsignal:chat_quote_time_prefix_message;/cursor stop`
| key[b]        | nicklist | Ban nick | `/window ${_window_number};/ban ${nick}`
| key[k]        | nicklist | Kick nick | `/window ${_window_number};/kick ${nick}`
| key[K]        | nicklist | Kick and ban nick | `/window ${_window_number};/kickban ${nick}`
| key[q]        | nicklist | Open query with nick | `/window ${_window_number};/query ${nick};/cursor stop`
| key[w]        | nicklist | Do a whois on nick | `/window ${_window_number};/whois ${nick}`
| key[Enter] .3+| -     .3+| Stop cursor mode .3+| `/cursor stop`
| key[ctrl-j]
| key[ctrl-m]
|===

[[key_bindings_mouse_context]]
==== Keys for "mouse" context

These keys are used in context "mouse", namely when a mouse event occurs.

[width="100%",cols="^.^3,^.^3,^.^3,.^10,.^8",options="header"]
|===
| Button ^(1)^ | Gesture | Area | Description | Command
| ◾◽◽         | -            | chat                 | Switch to window | `/window ${_window_number}`
| ◾◽◽         | left         | chat                 | Switch to previous buffer | `/window ${_window_number};/buffer +1`
| ◾◽◽         | right        | chat                 | Switch to next buffer | `/window ${_window_number};/buffer +1`
| ◾◽◽         | left (long)  | chat                 | Switch to first buffer | `/window ${_window_number};/buffer 1`
| ◾◽◽         | right (long) | chat                 | Switch to last buffer | `/window ${_window_number};/input jump_last_buffer`
| ◾◽◽         | -            | chat (script buffer) | Select line in script buffer | `/script go ${_chat_line_y}`
| ◽◽◾         | -            | chat (script buffer) | Install/remove script | `/script go ${_chat_line_y};/script installremove -q ${script_name_with_extension}`
| ⇑           | -            | chat                 | Scroll up a few lines in buffer history | `/window scroll_up -window ${_window_number}`
| ⇓           | -            | chat                 | Scroll down a few lines in buffer history | `/window scroll_down -window ${_window_number}`
| ⇑           | -            | chat (script buffer) | Move 5 lines up in script buffer | `/script up 5`
| ⇓           | -            | chat (script buffer) | Move 5 lines down in script buffer | `/script down 5`
| key[ctrl-]⇑ | -            | chat                 | Scroll horizontally to the left | `/window scroll_horiz -window ${_window_number} -10%`
| key[ctrl-]⇓ | -            | chat                 | Scroll horizontally to the right | `/window scroll_horiz -window ${_window_number} +10%`
| ◾◽◽         | up           | nicklist             | Scroll up one page in nicklist | `/bar scroll nicklist ${_window_number} -100%`
| ◾◽◽         | down         | nicklist             | Scroll down one page in nicklist | `/bar scroll nicklist ${_window_number} +100%`
| ◾◽◽         | up (long)    | nicklist             | Go to the beginning of nicklist | `/bar scroll nicklist ${_window_number} b`
| ◾◽◽         | down (long)  | nicklist             | Go to the end of nicklist | `/bar scroll nicklist ${_window_number} e`
| ◾◽◽         | -            | nicklist             | Open query with nick | `/window ${_window_number};/query ${nick}`
| ◽◽◾         | -            | nicklist             | Do a whois on nick | `/window ${_window_number};/whois ${nick}`
| ◾◽◽         | left         | nicklist             | Kick nick | `/window ${_window_number};/kick ${nick}`
| ◾◽◽         | left (long)  | nicklist             | Kick and ban nick | `/window ${_window_number};/kickban ${nick}`
| ◽◽◾         | left         | nicklist             | Ban nick | `/window ${_window_number};/ban ${nick}`
| ◽◽◾         | -            | input                | Grab a mouse event and insert its code in command line | `/input grab_mouse_area`
| ⇑           | -            | any bar              | Scroll bar by -20% | `/bar scroll ${_bar_name} ${_window_number} -20%`
| ⇓           | -            | any bar              | Scroll bar by +20% | `/bar scroll ${_bar_name} ${_window_number} +20%`
| ◽◾◽         | -            | anywhere             | Start cursor mode at this point | `/cursor go ${_x},${_y}`
|===

[NOTE]
^(1)^ "⇑" and "⇓" are wheel up and down.

[[mouse]]
=== Mouse support

WeeChat supports mouse clicks and gestures. It is working with local terminal,
and remotely via ssh connection with or without screen/tmux.

[[mouse_enable]]
==== Enable mouse

To enable mouse at startup:

----
/set weechat.look.mouse on
----

To enable mouse now, press key[alt-m] or do following command:

----
/mouse enable
----

It is possible to temporarily disable mouse, and bind that on a key. For example
key key[alt-x] to disable mouse for 10 seconds:

----
/key bind meta-x /mouse toggle 10
----

When mouse is enabled in WeeChat, you can use key[shift] modifier to select or
click in terminal, as if the mouse was disabled (on some terminals like iTerm,
you have to use key[alt] instead of key[shift]).

[NOTE]
For any problem with mouse, please look at 'WeeChat FAQ'.

[[mouse_bind_events]]
==== Bind mouse events to commands

Many default mouse events are already defined by WeeChat (see
<<key_bindings_mouse_context,keys for "mouse" context>>).

You can change or add bindings with the command `/key` using context "mouse"
(for syntax, see command <<command_weechat_key,/key>>).

Event name consists of a modifier (optional), a button/wheel name and a gesture
(optional). Different elements are separated by "-".

List of modifiers:

[width="50%",cols="3m,4",options="header"]
|===
| Modifier | Description
| ctrl     | Key key[ctrl]
| alt      | Key key[alt]
| ctrl-alt | Keys key[ctrl-]key[alt]
|===

List of buttons/wheel:

[width="50%",cols="3m,4",options="header"]
|===
| Button/wheel        | Description
| button1             | Click on left button
| button2             | Click on right button
| button3             | Click on middle button (often click on wheel)
| button4 ... button9 | Click on extra buttons
| wheelup             | Wheel (up)
| wheeldown           | Wheel (down)
|===

List of gestures (only for buttons, not wheel):

[width="50%",cols="3m,4",options="header"]
|===
| Gesture            | Distance
| gesture-up         | 3 ... 19
| gesture-up-long    | ≥ 20
| gesture-down       | 3 ... 19
| gesture-down-long  | ≥ 20
| gesture-left       | 3 ... 39
| gesture-left-long  | ≥ 40
| gesture-right      | 3 ... 39
| gesture-right-long | ≥ 40
|===

List of incomplete events (only for buttons, useful for plugins/scripts):

[width="50%",cols="3m,4",options="header"]
|===
| Event      | Description
| event-down | Button was pressed but not released yet
| event-drag | Mouse was moved with button pressed down
|===

Example of events:

* `button1`
* `ctrl-button1`
* `button1-gesture-right`
* `button1-event-down`
* `button1-event-drag`
* `alt-button2-gesture-down-long`
* `wheelup`
* `ctrl-alt-wheeldown`
* ...

[TIP]
When binding a key in context "mouse", it's possible to match many events using
`*` at beginning or end of name, for example `button1-gesture-*` will match any
gesture made using left button.

[TIP]
You can find an event name with command `/input grab_mouse` then doing event
with mouse. This will insert event name on command line.

[[command_line]]
=== Command line

WeeChat command line (at the bottom of window) lets you execute commands or
send text to buffer.

[[command_line_syntax]]
==== Syntax

Commands begin with "/" char, followed by name of command. For example, to see
list of all options:

----
/set
----

Text sent to a buffer is any text that does not begin with "/" char.
For example, to send text 'hello' on current buffer:

----
hello
----

However, it is possible to start with "/" char, by adding another.
For example, to send text '/set' on current buffer:

----
//set
----

[[command_line_colors]]
==== Color codes

For some plugins like IRC, you can use color codes and attributes, as
follow (press key[ctrl-c] then following letter, with optional value):

key[ctrl-c,b]::
    bold text

key[ctrl-c,c], key[xx]::
    text color `xx` (see list of colors below)

key[ctrl-c,c], key[xx]key[,]key[yy]::
    text color `xx` and background `yy` (see list of colors below)

key[ctrl-c,i]::
    italic text

key[ctrl-c,o]::
    disable color and attributes

key[ctrl-c,v]::
    reverse video (revert text color with background)

key[ctrl-c,_]::
    underlined text

[NOTE]
The same code (without number for key[ctrl-c,c]) may be used to stop the
attribute.

Color codes for key[ctrl-c,c] are:

include::autogen/user/irc_colors.asciidoc[]

[NOTE]
To show all available colors in your terminal, you can do `/color` then
key[alt-c] in WeeChat or run this command in terminal: `weechat --colors`.

Example: display of "hello everybody!" with "hello" in light blue bold and
"everybody" in light red underlined:

----
^Cc12^Cbhello ^Cb^Cc04^C_everybody^C_^Cc!
----

[NOTE]
In irc plugin, you can remap these colors using option
<<option_irc.color.mirc_remap,irc.color.mirc_remap>>.

[[colors]]
=== Colors

WeeChat can use up to 256 color pairs to display text in bars and chat area
(your terminal must support 256 colors to use them in WeeChat).

According to value of 'TERM' environment variable, you may have following limits
for colors in WeeChat:

[width="50%",cols="8,>2,>2",options="header"]
|===
| $TERM                                  | Colors | Pairs ^(1)^
| "rxvt-unicode", "xterm", ...           |     88 |         256
| "rxvt-256color", "xterm-256color", ... |    256 |       32767
| "screen"                               |      8 |          64
| "screen-256color"                      |    256 |       32767
|===

[NOTE]
^(1)^ Even if your terminal supports more than 256 pairs, only 256 pairs can be
used in WeeChat, because of a ncurses limitation.

You can run `weechat --colors` or use command `/color` in WeeChat to
display limits for your environment.

Some recommended values for 'TERM' if you want 256 colors:

* under screen: 'screen-256color'
* outside screen: 'xterm-256color', 'rxvt-256color', 'putty-256color', ...

[NOTE]
You may have to install package "ncurses-term" to use these values in 'TERM'
variable.

If you are using screen, you can add this line to your '~/.screenrc':

----
term screen-256color
----

If your 'TERM' variable has wrong value and that WeeChat is already running,
you can change it with these two commands:

----
/set env TERM screen-256color
/upgrade
----

[[colors_basic]]
==== Basic colors

Basic colors in WeeChat are:

[width="50%",cols="^3m,8",options="header"]
|===
| Name         | Color
| default      | Default terminal color (transparent for background)
| black        | Black
| darkgray     | Dark gray
| red          | Dark red
| lightred     | Light red
| green        | Dark green
| lightgreen   | Light green
| brown        | Brown
| yellow       | Yellow
| blue         | Dark blue
| lightblue    | Light blue
| magenta      | Dark magenta
| lightmagenta | Light magenta
| cyan         | Dark cyan
| lightcyan    | Light cyan
| gray         | Gray
| white        | White
|===

[[colors_extended]]
==== Extended colors

WeeChat dynamically allocates color pairs when colors are used on screen (to
display buffers and bars).

In addition to basic colors, you can use a color number between 1 and the limit
of your terminal.

Use command `/color` to see current colors and limits. With key[alt-c] you can
temporarily switch to terminal colors to choose a color.

For example if you want to display time in orange in buffer, do:

----
/set weechat.color.chat_time 214
----

Or if you want a very dark green background for status bar:

----
/set weechat.bar.status.color_bg 22
----

[[colors_aliases]]
==== Aliases

You can add color aliases with command `/color alias` and then use this alias
in any color option.

For example:

----
/color alias 214 orange
/set weechat.color.chat_delimiters orange
----

[[colors_attributes]]
==== Attributes

It is possible to use some attributes for colors. One or more attributes can be
added before color name or number:

* `*` : bold text
* `!` : reverse video
* `/` : italic
* `_` : underlined text
* `|` : keep attributes: do not reset bold/reverse/italic/underlined when
  changing color

For example if you want self nick as white underlined, do:

----
/set weechat.color.chat_nick_self _white
----

Or if you want time in status bar as orange underlined with bold:

----
/set weechat.color.status_time *_214
----

To use an attribute with default terminal color (-1), you must use a number
greater than last terminal color, for example max color in WeeChat: 99999.

Example of bold with terminal foreground color:

----
/set weechat.color.status_time *99999
----

[[secured_data]]
=== Secured data

[[secured_data_storage]]
==== Storage

WeeChat can encrypt passwords or private data using secured data, stored in file
'sec.conf'.

This configuration file is read before any other file, and the values stored
inside can be used in various WeeChat or plugins/scripts options.

You can set a passphrase to encrypt data in 'sec.conf'. This is not mandatory
but highly recommended, otherwise data is stored as plain text in file.

----
/secure passphrase this is my passphrase
----

When a passphrase is set, WeeChat will ask you to enter it on startup (but not
on `/upgrade`).

You can change this behavior and use a file with the passphrase (see option
<<option_sec.crypt.passphrase_file,sec.crypt.passphrase_file>>).

[[secured_data_encryption]]
===== Encryption

The encryption of data is made in 3 steps:

. Derive a key from the passphrase (with optional salt).
. Compute hash of data to encrypt.
. Encrypt the hash + data (output is: salt + encrypted hash/data).

[NOTE]
The cipher block mode is 'CFB'.

The result is put as hexadecimal string in file 'sec.conf', for example:

----
[data]
__passphrase__ = on
freenode = "53B1C86FCDA28FC122A95B0456ABD79B5AB74654F21C3D099A6CCA8173239EEA59533A1D83011251F96778AC3F5166A394"
----

[[secured_data_decryption]]
===== Decryption

The decryption of data is made in 3 steps:

. Derive a key using salt and passphrase.
. Decrypt hash + data.
. Check that decrypted hash == hash of data.

[[secured_data_manage]]
==== Manage secured data

To add secured data, use `/secure set`, for example a password for 'freenode'
IRC server:

----
/secure set freenode mypassword
----

For comfort, secured data can be displayed in a dedicated buffer (key[alt-v] on
buffer to see values), just do:

----
/secure
----

Secured data can be used in some options that can contain private data like
password, using this format: "${sec.data.xxx}" where "xxx" is the name of
secured data (used with `/secure set xxx ...`). +
For a complete list of supported options, see `/help secure`.

To use the 'freenode' password, for example with
<<irc_sasl_authentication,SASL authentication>>:

----
/set irc.server.freenode.sasl_password "${sec.data.freenode}"
----

[[options_and_commands]]
=== Options and commands

[[sec_options]]
==== Secured data options (sec.conf)

Sections:

[width="100%",cols="3m,6m,16",options="header"]
|===
| Section | Control command                    | Description
| crypt   | /set sec.crypt.*                   | Options for encryption
| data    | <<command_weechat_secure,/secure>> | Secured data
|===

Options:

include::autogen/user/sec_options.asciidoc[]

[[weechat_options]]
==== WeeChat options (weechat.conf)

Sections:

[width="100%",cols="3m,6m,16",options="header"]
|===
| Section    | Control command                           | Description
| debug      | <<command_weechat_debug,/debug set>>      +
               /set weechat.debug.*                      | Debug level, for core and plugins (options can be added/removed in section)
| startup    | /set weechat.startup.*                    | Startup options
| look       | /set weechat.look.*                       | Look and feel
| palette    | <<command_weechat_color,/color alias>>    +
               /set weechat.palette.*                    | Color aliases (options can be added/removed in section)
| color      | /set weechat.color.*                      | Colors
| completion | /set weechat.completion.*                 | Completion options
| history    | /set weechat.history.*                    | History options (commands and buffers)
| proxy      | <<command_weechat_proxy,/proxy>>          +
               /set weechat.proxy.*                      | Proxy options
| network    | /set weechat.network.*                    | Network/SSL options
| bar        | <<command_weechat_bar,/bar>>              +
               /set weechat.bar.*                        | Bar options
| layout     | <<command_weechat_layout,/layout>>        | Layouts
| notify     | <<command_weechat_buffer,/buffer notify>> | Notify levels for buffers (options can be added/removed in section)
| filter     | <<command_weechat_filter,/filter>>        | Filters
| key        | <<command_weechat_key,/key>>              | Keys in default context
| key_search | <<command_weechat_key,/key>>              | Keys in search context
| key_cursor | <<command_weechat_key,/key>>              | Keys in cursor context
| key_mouse  | <<command_weechat_key,/key>>              | Keys in mouse context
|===

Options:

include::autogen/user/weechat_options.asciidoc[]

[[weechat_commands]]
==== WeeChat commands

include::autogen/user/weechat_commands.asciidoc[]

[[plugins]]
== Plugins

A plugin is a dynamic library, written in C and compiled, which is loaded by
WeeChat.
Under GNU/Linux, the file has ".so" extension, ".dll" under Windows.

Plugins found are automatically loaded when WeeChat is starting, and it is
possible to load or unload plugins while WeeChat is running.

It's important to make difference between a 'plugin' and a 'script': a
'plugin' is a binary file compiled and loaded with command `/plugin`, whereas
a 'script' is a text file loaded with a plugin like 'python' with command
`/python`.

You can use command `/plugin` to load/unload a plugin, or list all loaded
plugins.
When a plugin is unloaded, all buffers created by this plugin are
automatically closed.

Examples to load, unload or list plugins:

----
/plugin load irc
/plugin unload irc
/plugin list
----

Default plugins are:

[width="100%",cols="^1,5",options="header"]
|===
| Plugin     | Description
| alias      | Define alias for commands
| aspell     | Spell checking for command line
| charset    | Charset decoding/encoding for buffers
| exec       | Execution of external commands in WeeChat
| fifo       | FIFO pipe used to remotely send commands to WeeChat
| irc        | IRC chat protocol
| logger     | Log buffers to files
| relay      | Relay data via network
| script     | Scripts manager
| python     | Python scripting API
| perl       | Perl scripting API
| ruby       | Ruby scripting API
| lua        | Lua scripting API
| tcl        | Tcl scripting API
| guile      | Guile (scheme) scripting API
| javascript | Javascript scripting API
| trigger    | Text replacement and command execution on events triggered by WeeChat/plugins
| xfer       | File transfer and direct chat
|===

To learn more about plugin or script development (through API), please read
'WeeChat Plugin API Reference' or 'WeeChat Scripting Guide'.

[[alias_plugin]]
=== Alias plugin

Alias plugin lets you create alias for commands (from WeeChat or other
plugins).

[[alias_commands]]
==== Commands

include::autogen/user/alias_commands.asciidoc[]

[[aspell_plugin]]
=== Aspell plugin

Aspell plugin lets you check spelling in command line. It is possible to use
many languages by buffer.

[[aspell_options]]
==== Options (aspell.conf)

Sections:

[width="100%",cols="3m,6m,16",options="header"]
|===
| Section    | Control command                           | Description
| color      | /set aspell.color.*                       | Colors
| check      | /set aspell.check.*                       | Options to control spell checking
| dict       | <<command_aspell_aspell,/aspell setdict>> +
               /set aspell.dict.*                        | Dictionaries used by buffer (options can be added/removed in section)
| option     | /set aspell.option.*                      | <<aspell_speller_options,Speller options>> (options can be added/removed in section)
|===

Options:

include::autogen/user/aspell_options.asciidoc[]

[[aspell_commands]]
==== Commands

include::autogen/user/aspell_commands.asciidoc[]

[[aspell_speller_options]]
==== Speller options

Speller options can be defined by adding options in section "option" of aspell
configuration.

The option name is an aspell configuration option. List of options can be found
in a shell with following command:

----
$ aspell config
----

For example, to enable option "ignore-case":

----
/set aspell.option.ignore-case "true"
----

[[aspell_suggestions]]
==== Suggestions

Suggestions are displayed in a bar item called "aspell_suggest". The number of
suggestions is set in option 'aspell.check.suggestions'.

To enable suggestions you must set option 'aspell.check.suggestions' to an
integer ≥ 0 and add the bar item "aspell_suggest" to a bar, like 'status'.

Example of suggestions with English dictionary (`en`):

....
│[12:55] [6] [irc/freenode] 3:#test(+n){4} [print,prone,prune]                    │
│[@Flashy] prinr █                                                                │
└─────────────────────────────────────────────────────────────────────────────────┘
....

Example of suggestions with English and French dictionaries (`en,fr`):

....
│[12:55] [6] [irc/freenode] 3:#test(+n){4} [print,prone,prune/prime,primer,primé] │
│[@Flashy] prinr █                                                                │
└─────────────────────────────────────────────────────────────────────────────────┘
....

[[charset_plugin]]
=== Charset plugin

Charset plugin lets you decode or encode data using charsets.

There is default charset for decode/encode, and specific charsets for buffers
(or group of buffers).

This plugin is optional, but recommended: if it's not loaded, WeeChat
can only read/write UTF-8 data.

Charset plugin should be autoloaded by WeeChat. To be sure plugin is loaded,
try:

----
/charset
----

If command is not found, then load plugin with command:

----
/plugin load charset
----

If plugin is not found, then you should compile again WeeChat with
plugins and Charset support.

When Charset plugin starts, it displays terminal and internal charsets.
Terminal charset depends on your locale, and internal is UTF-8.

For example:

....
charset: terminal: ISO-8859-15, internal: UTF-8
....

[[charset_options]]
==== Options (charset.conf)

Sections:

[width="100%",cols="3m,6m,16",options="header"]
|===
| Section | Control command                             | Description
| default | /set charset.default.*                      | Default decoding/encoding charset
| decode  | <<command_charset_charset,/charset decode>> +
            /set charset.decode.*                       | Decoding charset by buffer (options can be added/removed in section)
| encode  | <<command_charset_charset,/charset encode>> +
            /set charset.encode.*                       | Encoding charset by buffer (options can be added/removed in section)
|===

Options:

include::autogen/user/charset_options.asciidoc[]

[[charset_commands]]
==== Commands

include::autogen/user/charset_commands.asciidoc[]

[[charset_set]]
==== Set charset

To set global decode and encode charsets, use command `/set`.

For example:

----
/set charset.default.decode ISO-8859-15
/set charset.default.encode ISO-8859-15
----

If global decode charset is not set (for example during first
load of Charset plugin), it will be automatically set to terminal
charset (if it's different from UTF-8), or by default to 'ISO-8859-1'.

Default encode value is empty, so it sends by default with
internal charset (UTF-8).

To set IRC server charset, use command `/charset` on server buffer.
If you give only charset, then it will set decoding and encoding values.

For example:

----
/charset ISO-8859-15
----

It's equivalent to:

----
/charset decode ISO-8859-15
/charset encode ISO-8859-15
----

To set IRC channel (or private) charset, use same commands as server,
but on channel (or private) buffer.

To set charset for all channels/privates of an IRC server:

----
/set charset.encode.irc.freenode ISO-8859-15
----

To see all charsets used, use following command:

----
/set charset.*
----

[[charset_troubleshooting]]
==== Troubleshooting

For any problem with charsets, please look at 'WeeChat FAQ'.

[[exec_plugin]]
=== Exec plugin

The `/exec` command lets you execute external commands inside WeeChat and
display the output locally, or send it to a buffer.

[[exec_options]]
==== Options (exec.conf)

Sections:

[width="100%",cols="3m,6m,16",options="header"]
|===
| Section | Control command     | Description
| command | /set exec.command.* | Options for commands
| color   | /set exec.color.*   | Colors
|===

Options:

include::autogen/user/exec_options.asciidoc[]

[[exec_commands]]
==== Commands

include::autogen/user/exec_commands.asciidoc[]

[[fifo_plugin]]
=== Fifo plugin

You can remote control WeeChat, by sending commands or text to a FIFO pipe (if
option "plugins.var.fifo.fifo" is enabled, it is by default).

The FIFO pipe is located in '~/.weechat/' and is called 'weechat_fifo_xxxx'
(where 'xxxx' is the process ID (PID) of running WeeChat).

Syntax for the FIFO pipe commands/text is one of following:

....
  plugin.buffer *text or command here
  *text or command here
....

Some examples:

* nick change on IRC server freenode to "newnick":

----
$ echo 'irc.server.freenode */nick newnick' >~/.weechat/weechat_fifo_12345
----

* display text on IRC #weechat channel:

----
$ echo 'irc.freenode.#weechat *hello!' >~/.weechat/weechat_fifo_12345
----

* display text on current buffer:

----
$ echo '*hello!' >~/.weechat/weechat_fifo_12345
----

* send two commands to unload/reload Python scripts (you have to separate them
  with "\n"):

----
$ printf '%b' '*/python unload\n*/python autoload\n' >~/.weechat/weechat_fifo_12345
----

You can write a script to send command to all running WeeChat at same time,
for example:

[source,shell]
----
#!/bin/sh
if [ $# -eq 1 ]; then
    for fifo in ~/.weechat/weechat_fifo_*
    do
        printf '%b\n' "$1" >"$fifo"
    done
fi
----

If the script is called "auto_weechat_command", you can run it with:

----
$ ./auto_weechat_command 'irc.freenode.#weechat *hello'
----

[[irc_plugin]]
=== IRC plugin

The IRC plugin is designed to chat through IRC protocol with other people.

It is multi-servers, and offers all supported IRC commands including DCC chat
and file transfer (via xfer plugin, see <<xfer_plugin,Xfer plugin>>).

[[irc_command_line_options]]
==== Command line options

It is possible to give URL for one or many IRC servers, as follow:

----
irc[6][s]://[nick[:password]@]irc.example.org[:port][/channel][,channel[...]]
----

Example to join '#weechat' and '#toto' on server 'chat.freenode.net' server,
default port (6667), with nick 'nono':

----
$ weechat irc://nono@chat.freenode.net/#weechat,#toto
----

[[irc_options]]
==== Options (irc.conf)

Sections:

[width="100%",cols="3m,6m,16",options="header"]
|===
| Section        | Control command                | Description
| look           | /set irc.look.*                | Look and feel
| color          | /set irc.color.*               | Colors
| network        | /set irc.network.*             | Network options
| msgbuffer      | /set irc.msgbuffer.*           | <<irc_target_buffer,Target buffer for IRC messages>> (options can be added/removed in section)
| ctcp           | /set irc.ctcp.*                | <<irc_ctcp_replies,CTCP replies>> (options can be added/removed in section)
| ignore         | <<command_irc_ignore,/ignore>> | Ignore people
| server_default | /set irc.server_default.*      | Default values for servers (used when options in server are not defined)
| server         | <<command_irc_server,/server>> +
                   /set irc.server.*              | Servers
|===

Options:

include::autogen/user/irc_options.asciidoc[]

[[irc_commands]]
==== Commands

include::autogen/user/irc_commands.asciidoc[]

[[irc_ssl_certificates]]
==== SSL certificates

When connecting to IRC server with SSL, WeeChat checks by default that the
connection is fully trusted.

Some options are used to control SSL connection:

weechat.network.gnutls_ca_file::
    path to file with certificate authorities (by default: "%h/ssl/CAs.pem")

irc.server.xxx.ssl_cert::
    SSL certificate file used to automatically identify your nick (for example
    CertFP on oftc, see below)

irc.server.xxx.ssl_dhkey_size::
    size of the key used during the Diffie-Hellman Key Exchange (by default:
    2048)

irc.server.xxx.ssl_verify::
    check that the SSL connection is fully trusted (on by default)

[NOTE]
Option "ssl_verify" is on by default, so verification is strict and may fail,
even if it was OK with versions prior to 0.3.1.

[[irc_connect_oftc_with_certificate]]
===== First example: connect to oftc and check certificate

* Import certificate in shell:

----
$ mkdir -p ~/.weechat/ssl
$ wget -O ~/.weechat/ssl/CAs.pem http://www.spi-inc.org/ca/spi-cacert.crt
----

Note: it is possible to concatenate many certificates in file CAs.pem.

* In WeeChat, with "oftc" server already created:

----
/connect oftc
----

[[irc_connect_oftc_with_certfp]]
===== Second example: connect to oftc using CertFP

* Create certificate in shell:

----
$ mkdir -p ~/.weechat/ssl
$ cd ~/.weechat/ssl
$ openssl req -nodes -newkey rsa:2048 -keyout nick.pem -x509 -days 365 -out nick.pem
----

* In WeeChat, with "oftc" server already created:

----
/set irc.server.oftc.ssl_cert "%h/ssl/nick.pem"
/connect oftc
/msg nickserv cert add
----

For more information, look at http://www.oftc.net/oftc/NickServ/CertFP

[[irc_sasl_authentication]]
==== SASL authentication

WeeChat supports SASL authentication, using different mechanisms:

* 'plain': plain text password (default)
* 'ecdsa-nist256p-challenge': challenge with public/private key
* 'external': client side SSL cert
* 'dh-blowfish': blowfish encrypted password
* 'dh-aes': AES encrypted password

[NOTE]
The "gcrypt" library is required when compiling WeeChat in order to use
"dh-blowfish" and "dh-aes" mechanisms (see <<dependencies,dependencies>>).

Options in servers are:

* 'sasl_mechanism': mechanism to use (see above)
* 'sasl_timeout': timeout (in seconds) for authentication
* 'sasl_fail': action to perform if authentication fails
* 'sasl_username': username (nick)
* 'sasl_password': password
* 'sasl_key': file with ECC private key (for mechanism
  'ecdsa-nist256p-challenge')

[[irc_sasl_ecdsa_nist256p_challenge]]
===== SASL ECDSA-NIST256P-CHALLENGE

You must generate a private key in order to authentify with the
ECDSA-NIST256P-CHALLENGE mechanism (no password is required on connection).

You can generate the key with this command:

----
$ openssl ecparam -genkey -name prime256v1 >~/.weechat/ecdsa.pem
----

Get the public key (encoded as base64) with this command:

----
$ openssl ec -noout -text -conv_form compressed -in ~/.weechat/ecdsa.pem | grep '^pub:' -A 3 | tail -n 3 | tr -d ' \n:' | xxd -r -p | base64
----

Connect to the server, identify (for example with "nickserv identify") and set
your public key in your account, using nickserv (replace the base64 value with
your public key):

----
/connect freenode
/msg nickserv identify your_password
/msg nickserv set pubkey Av8k1FOGetUDq7sPMBfufSIZ5c2I/QYWgiwHtNXkVe/q
----

Configure the SASL options in the server:

----
/set irc.server.freenode.sasl_mechanism ecdsa-nist256p-challenge
/set irc.server.freenode.sasl_username "your_nickname"
/set irc.server.freenode.sasl_key "%h/ecdsa.pem"
----

Reconnect to the server:

----
/reconnect freenode
----

[[irc_tor_freenode]]
==== Connect to Freenode with TOR/SASL

In addition to SSL, Freenode servers support connections with TOR
(https://www.torproject.org/), a network of virtual tunnels that allows people
and groups to improve their privacy and security on the Internet.

In first place, install TOR. For Debian (and derived):

----
$ sudo apt-get install tor
----

In WeeChat you need to create a socks5 proxy for TOR service (hostname/IP and
port depend on your TOR configuration):

----
/proxy add tor socks5 127.0.0.1 9050
----

Now, create a new server, for example:

----
/server add freenode-tor p4fsi4ockecnea7l.onion
----

Set proxy for TOR:

----
/set irc.server.freenode-tor.proxy "tor"
----

Set SASL authentication:

----
/set irc.server.freenode-tor.sasl_username "your_nickname"
/set irc.server.freenode-tor.sasl_password "your_password"
----

And finally, connection to server:

----
/connect freenode-tor
----

For more info about Freenode and TOR: http://freenode.net/irc_servers.shtml#tor

[[irc_smart_filter_join_part_quit]]
==== Smart filter for join/part/quit messages

A smart filter is available to filter join/part/quit messages when nick did not
say something during past X minutes on channel.

Smart filter is enabled by default, but you must add a filter to hide lines on
buffers, for example:

----
/filter add irc_smart * irc_smart_filter *
----

It is possible to create filter for one channel only or channels beginning with
same name (see `/help filter`):

----
/filter add irc_smart_weechat irc.freenode.#weechat irc_smart_filter *
/filter add irc_smart_weechats irc.freenode.#weechat* irc_smart_filter *
----

You can hide only join or part/quit with following options:

----
/set irc.look.smart_filter_join on
/set irc.look.smart_filter_quit on
----

You can setup delay (in minutes):

----
/set irc.look.smart_filter_delay 5
----

If a nick did not speak during last 5 minutes, its join and/or part/quit will be
hidden on channel.

[[irc_ctcp_replies]]
==== CTCP replies

It is possible to customize CTCP replies, or block some CTCP queries (do not
reply).

For example, to customize reply to CTCP "VERSION", use following command:

----
/set irc.ctcp.version "I'm running WeeChat $version, it rocks!"
----

If you want to block CTCP "VERSION" (do not reply to a query), then set empty
string:

----
/set irc.ctcp.version ""
----

Even unknown CTCP can be customized, for example you can reply to
CTCP "BLABLA":

----
/set irc.ctcp.blabla "This is my answer to CTCP BLABLA"
----

It is possible to customize CTCP for one server only, using its internal name
before CTCP name:

----
/set irc.ctcp.freenode.version "WeeChat $version (for freenode)"
----

If you want to restore standard CTCP reply, then remove option:

----
/unset irc.ctcp.version
----

Following codes can be used in strings and are automatically expanded by WeeChat
when replying to CTCP:

[width="100%",cols="^2l,4,8",options="header"]
|===
| Code         | Description                         | Value/example
| $clientinfo  | List of supported CTCP              | `ACTION DCC CLIENTINFO FINGER PING SOURCE TIME USERINFO VERSION`
| $version     | WeeChat version                     | `0.4.0-dev`
| $versiongit  | WeeChat version + git version ^(1)^ | `0.4.0-dev (git: v0.3.9-104-g7eb5cc4)`
| $git         | Git version ^(1)^                   | `v0.3.9-104-g7eb5cc4`
| $compilation | WeeChat compilation date            | `Dec 16 2012`
| $osinfo      | Info about OS                       | `Linux 2.6.32-5-amd64 / x86_64`
| $site        | WeeChat site                        | `https://weechat.org/`
| $download    | WeeChat site, download page         | `https://weechat.org/download`
| $time        | Current date/time                   | `Sun, 16 Dec 2012 10:40:48 +0100`
| $username    | User name on IRC server             | `name`
| $realname    | Real name on IRC server             | `John Doe`
|===

[NOTE]
^(1)^ The git version is the output of command `git describe`. It is known only
if WeeChat has been compiled inside the git repository and if git was installed.

If CTCP options are not defined (by default), CTCP replies are:

[width="100%",cols="^2,4,8",options="header"]
|===
| CTCP       | Reply format                         | Example
| CLIENTINFO | `$clientinfo`                        | `ACTION DCC CLIENTINFO FINGER PING SOURCE TIME USERINFO VERSION`
| FINGER     | `WeeChat $versiongit`                | `WeeChat 0.4.0-dev (git: v0.3.9-104-g7eb5cc4)`
| SOURCE     | `$download`                          | `https://weechat.org/download`
| TIME       | `$time`                              | `Sun, 16 Dec 2012 10:40:48 +0100`
| USERINFO   | `$username ($realname)`              | `name (John Doe)`
| VERSION    | `WeeChat $versiongit ($compilation)` | `WeeChat 0.4.0-dev (git: v0.3.9-104-g7eb5cc4) (Dec 16 2012)`
|===

[[irc_target_buffer]]
==== Target buffer for IRC messages

It is possible to customize target buffer for IRC messages (buffer used to
display message) with options `irc.msgbuffer.*`.

For some IRC messages (see list below), you can use value:

current::
    current buffer (if it's IRC buffer, or on server buffer by default)

private::
    private buffer for nick, or current/server buffer if not found (according
    to option 'irc.look.msgbuffer_fallback')

server::
    server buffer

weechat::
    WeeChat "core" buffer

When option is not set (default), WeeChat chooses appropriate buffer, commonly
server or channel buffer.

Non-comprehensive list of IRC messages or alias that you can customize:

[width="60%",cols="^1m,^3m,8",options="header"]
|===
| message | alias         | description
| error   |               | error
| invite  |               | invited on a channel
| join    |               | join
| kick    |               | kick
| kill    |               | kill
| mode    |               | mode
| notice  |               | notice
| part    |               | part
| quit    |               | quit
| topic   |               | topic
| wallops |               | wallops
|         | ctcp          | ctcp (sent or received, in a privmsg or notice message)
| 221     |               | user mode string
| 275     | whois         | whois (secure connection)
| 301     | whois         | whois (away)
| 303     |               | ison
| 305     | unaway        | unaway
| 306     | away          | away
| 307     | whois         | whois (registered nick)
| 310     | whois         | whois (help mode)
| 311     | whois         | whois (user)
| 312     | whois         | whois (server)
| 313     | whois         | whois (operator)
| 314     | whowas        | whowas
| 315     | who           | who (end)
| 317     | whois         | whois (idle)
| 318     | whois         | whois (end)
| 319     | whois         | whois (channels)
| 320     | whois         | whois (identified user)
| 321     | list          | list (start)
| 322     | list          | list (channel)
| 323     | list          | list (end)
| 326     | whois         | whois (has oper privs)
| 327     | whois         | whois (host)
| 328     |               | channel URL
| 329     |               | channel creation date
| 330     | whois         | whois (logged in as)
| 331     |               | no topic for channel
| 332     |               | topic of channel
| 333     |               | infos about topic
| 335     | whois         | whois (is a bot on)
| 338     | whois         | whois (host)
| 341     |               | inviting
| 343     | whois         | whois (is opered as)
| 344     | reop          | channel reop
| 345     | reop          | channel reop (end)
| 346     | invitelist    | invite list
| 347     | invitelist    | invite list (end)
| 348     | exceptionlist | exception list
| 349     | exceptionlist | exception list (end)
| 351     |               | server version
| 352     | who           | who
| 353     | names         | list of users on channel
| 366     | names         | end of /names list
| 367     | banlist       | ban list
| 368     | banlist       | end of ban list
| 369     | whowas        | whowas (end)
| 378     | whois         | whois (connecting from)
| 379     | whois         | whois (using modes)
| 401     | whois         | no such nick/channel
| 402     | whois         | no such server
| 432     |               | erroneous nickname
| 433     |               | nickname already in use
| 438     |               | not authorized to change nickname
| 671     | whois         | whois (secure connection)
| 728     | quietlist     | quiet list
| 729     | quietlist     | end of quiet list
| 732     | monitor       | list of monitored nicks
| 733     | monitor       | list of monitored nicks (end)
| 901     |               | you are now logged in
|===

Other numeric commands can be customized as well.

Message can be prefixed by server name to be specific to an irc server
(for example: `freenode.whois`).

Some examples:

* display result of `/whois` on private buffer:

----
/set irc.msgbuffer.whois private
----

* restore default buffer for whois (server buffer):

----
/unset irc.msgbuffer.whois
----

* display invitation on current buffer, only for "freenode" server:

----
/set irc.msgbuffer.freenode.invite current
----

* display message "303" (ison) on WeeChat "core" buffer:

----
/set irc.msgbuffer.303 weechat
----

[[logger_plugin]]
=== Logger plugin

The Logger plugin lets you save content of buffers to files, with options
about what and how it is saved.

[[logger_options]]
==== Options (logger.conf)

Sections:

[width="100%",cols="3m,6m,16",options="header"]
|===
| Section | Control command     | Description
| look    | /set logger.look.*  | Look and feel
| color   | /set logger.color.* | Colors
| file    | /set logger.file.*  | Options for log files
| level   | /set logger.level.* | Log level by buffer (options can be added/removed in section)
| mask    | /set logger.mask.*  | Filename mask by buffer (options can be added/removed in section)
|===

Options:

include::autogen/user/logger_options.asciidoc[]

[[logger_commands]]
==== Commands

include::autogen/user/logger_commands.asciidoc[]

[[logger_log_levels]]
==== Log levels

Logging is made with a level for each buffer. Default level is 9 (log
all messages displayed on buffer).
You can change level for one buffer, or a group of buffers.

Possible levels are 0 to 9. Zero means "do not log anything" and 9 means
"log all messages".

Plugins are using different levels for messages displayed.
IRC plugin uses following levels:

* level 1: message from user (on channel or private)
* level 2: nick change (you or someone else)
* level 3: any server message (except join/part/quit)
* level 4: server message join/part/quit

So if you set level 3 for an IRC channel, WeeChat will log all messages,
but not join/part/quit.

Some examples:

* set level 3 for IRC channel #weechat:

----
/set logger.level.irc.freenode.#weechat 3
----

* set level 3 for freenode server buffer:

----
/set logger.level.irc.server.freenode 3
----

* set level 3 for all channels on server freenode:

----
/set logger.level.irc.freenode 3
----

* set level 2 for all IRC buffers:

----
/set logger.level.irc 2
----

[[logger_filenames_masks]]
==== Filenames masks

It is possible to define a filename mask for each buffer, and use local buffer
variables to build filename. To see local variables for current buffer:

----
/buffer localvar
----

For example, on buffer "irc.freenode.#weechat", WeeChat will search a mask with
option name, in this order:

----
logger.mask.irc.freenode.#weechat
logger.mask.irc.freenode
logger.mask.irc
logger.file.mask
----

That means you can have masks specific for some IRC servers
("logger.mask.irc.freenode") or for a plugin ("logger.mask.irc").

[[logger_files_by_date]]
===== Log files by date

To have log files by date, you can use date/time specifiers in mask (see
`man strftime` for formats), for example:

----
/set logger.file.mask "%Y/%m/$plugin.$name.weechatlog"
----

You'll have following files:

....
~/.weechat/
    |--- logs/
        |--- 2010/
            |--- 11/
            |       irc.server.freenode.weechatlog
            |       irc.freenode.#weechat.weechatlog
        |--- 2010/
            |--- 12/
            |       irc.server.freenode.weechatlog
            |       irc.freenode.#weechat.weechatlog
....

[[logger_irc_files_by_server_channel]]
===== IRC log files by server and channel

If you want one directory by IRC server and one file by channel inside:

----
/set logger.mask.irc "irc/$server/$channel.weechatlog"
----

You'll have following files:

....
~/.weechat/
    |--- logs/
        |--- irc/
            |--- freenode/
            |       freenode.weechatlog
            |       #weechat.weechatlog
            |       #mychan.weechatlog
            |--- oftc/
            |       oftc.weechatlog
            |       #chan1.weechatlog
            |       #chan2.weechatlog
....

[[relay_plugin]]
=== Relay plugin

The Relay plugin is used to relay data via network, using different protocols:

* 'irc': IRC proxy: used to share connections to IRC servers with one or many
  other IRC clients
* 'weechat': protocol used by remote interfaces to display and interact with
  WeeChat (for example QWeeChat or weechat-android)

[[relay_options]]
==== Options (relay.conf)

Sections:

[width="100%",cols="3m,6m,16",options="header"]
|===
| Section | Control command                    | Description
| look    | /set relay.look.*                  | Look and feel
| color   | /set relay.color.*                 | Colors
| network | /set relay.network.*               | Network options
| irc     | /set relay.irc.*                   | Options specific to irc protocol (irc proxy)
| port    | <<command_relay_relay,/relay add>> +
            /set relay.port.*                  | Ports used for relay (irc and weechat protocols) (options can be added/removed in section)
|===

Options:

include::autogen/user/relay_options.asciidoc[]

[[relay_commands]]
==== Commands

include::autogen/user/relay_commands.asciidoc[]

[[relay_password]]
==== Password

It is highly recommended to set a password for relay, with command:

----
/set relay.network.password "mypassword"
----

This password is used for 'irc' and 'weechat' protocols.

[[relay_ssl]]
==== SSL

You can use SSL by creating a certificate and private key, and by using prefix
"ssl." in the name of protocol.

The default file for certificate/key is '~/.weechat/ssl/relay.pem'
(option <<option_relay.network.ssl_cert_key,relay.network.ssl_cert_key>>).

You can create a certificate and private key with following commands:

----
$ mkdir -p ~/.weechat/ssl
$ cd ~/.weechat/ssl
$ openssl req -nodes -newkey rsa:2048 -keyout relay.pem -x509 -days 365 -out relay.pem
----

If WeeChat is already running, you can reload the certificate and private key
with command:

----
/relay sslcertkey
----

[[relay_irc_proxy]]
==== IRC proxy

The Relay plugin can act as an IRC proxy: it will simulate an IRC server, and
you can connect to WeeChat with any other IRC client (including WeeChat itself).

You can define one port by IRC server, or one generic port for all servers.

When using one port for all servers, the client must send the internal name of
server in the IRC "PASS" command, with this format:

----
PASS server:password
----

Example: IRC proxy with SSL for any server (client will choose):

----
/relay add ssl.irc 8000
----

Example: IRC proxy without SSL only for server "freenode":

----
/relay add irc.freenode 8000
----

Now you can connect on port 8000 with any IRC client using server password
"mypassword" (or "freenode:mypassword" if no server was specified in the relay).

[[relay_weechat_protocol]]
==== WeeChat protocol

The Relay plugin can send data to remote interface using WeeChat protocol.

You can connect with a remote interface, see the list on download page:
https://weechat.org/download

[IMPORTANT]
WeeChat itself can NOT connect to another WeeChat with this protocol.

For example:

----
/relay add weechat 9000
----

Now you can connect on port 9000 with a remote interface using password
"mypassword".

[[relay_websocket]]
==== WebSocket

WebSocket protocol (http://tools.ietf.org/html/rfc6455[RFC 6455]) is supported
in Relay plugin for all protocols.

The WebSocket handshake is automatically detected and socket becomes ready for
WebSocket if required headers are found in handshake and if origin is allowed
(see option
<<option_relay.network.websocket_allowed_origins,relay.network.websocket_allowed_origins>>).

A WebSocket can be opened in a HTML5 with a single line of JavaScript:

[source,js]
----
websocket = new WebSocket("ws://server.com:9000/weechat");
----

The port (9000 in example) is the port defined in Relay plugin.
The URI must always end with "/weechat" (for 'irc' and 'weechat' protocols).

[[scripts_plugins]]
=== Scripts plugins

WeeChat provides 7 scripting plugins: Python, Perl, Ruby, Lua, Tcl, Guile
(scheme) and Javascript.
These plugins can load, execute and unload scripts for these languages.

Another plugin called "script" is a scripts manager and is used to load/unload
scripts of any language, and install/remove scripts of WeeChat scripts
repository, which are visible at this URL: https://weechat.org/scripts

For more information about how to write scripts, or WeeChat API for
scripts, please read 'WeeChat Scripting Guide'.

[[script_options]]
==== Script options (script.conf)

Sections:

[width="100%",cols="3m,6m,16",options="header"]
|===
| Section | Control command       | Description
| look    | /set script.look.*    | Look and feel
| color   | /set script.color.*   | Colors
| scripts | /set script.scripts.* | Options for download of scripts
|===

Options:

include::autogen/user/script_options.asciidoc[]

[[script_commands]]
==== Script commands

include::autogen/user/script_commands.asciidoc[]

[[python_commands]]
==== Python commands

include::autogen/user/python_commands.asciidoc[]

[[perl_commands]]
==== Perl commands

include::autogen/user/perl_commands.asciidoc[]

[[ruby_commands]]
==== Ruby commands

include::autogen/user/ruby_commands.asciidoc[]

[[lua_commands]]
==== Lua commands

include::autogen/user/lua_commands.asciidoc[]

[[tcl_commands]]
==== Tcl commands

include::autogen/user/tcl_commands.asciidoc[]

[[guile_commands]]
==== Guile commands

include::autogen/user/guile_commands.asciidoc[]

[[javascript_commands]]
==== Javascript commands

include::autogen/user/javascript_commands.asciidoc[]

[[trigger_plugin]]
=== Trigger plugin

Trigger is the Swiss Army knife for WeeChat: it can hook many things (signal,
modifier, print, ...), change the content of data, and execute one or more
commands. A condition can be used to prevent the trigger to run in some
circumstances.

Using triggers require you to know how the signals, modifiers, ... are working.
So you might consider reading the 'Hooks' chapter in the
'WeeChat Plugin API Reference'.

[[trigger_options]]
==== Options (trigger.conf)

Sections:

[width="100%",cols="3m,6m,16",options="header"]
|===
| Section | Control command                          | Description
| look    | /set trigger.look.*                      | Look and feel
| color   | /set trigger.color.*                     | Colors
| trigger | <<command_trigger_trigger,/trigger add>> +
            <<command_trigger_trigger,/trigger set>> +
            /set trigger.trigger.*                   | Trigger options
|===

Options:

include::autogen/user/trigger_options.asciidoc[]

[[trigger_commands]]
==== Commands

include::autogen/user/trigger_commands.asciidoc[]

[[trigger_anatomy]]
==== Anatomy of a trigger

A trigger has the following options (names are
`trigger.trigger.<name>.<option>`):

[width="100%",cols="2m,2,10",options="header"]
|===
| Option | Values | Description

| enabled | `on`, `off` |
  When option is `off`, the trigger is disabled and actions are not executed
  any more.

| hook | `signal`, `hsignal`, `modifier`, `print`, `command`, `command_run`,
  `timer`, `config`, `focus` |
  The hook used in trigger. For more information, see
  'WeeChat Plugin API Reference', chapter 'Hooks'.

| arguments | string |
  The arguments for the hook, it depends on the hook type used.

| conditions | string |
  Conditions to execute the trigger; they are evaluated (see command
  <<command_weechat_eval,/eval>>).

| regex | string |
  One or more POSIX extended regular expressions, to change data received in the
  hook callback (and some stuff added by trigger plugin), see
  <<trigger_regex,regular expression>>.

| command | string |
  Command to execute (many commands can be separated by semicolons); it is
  evaluated (see command <<command_weechat_eval,/eval>>).

| return_code | `ok`, `ok_eat`, `error` |
  The return code of callback (default is `ok`, which should be used in almost
  all triggers, the other values are rarely used).
|===

For example, the default 'beep' trigger has following options:

----
trigger.trigger.beep.enabled = on
trigger.trigger.beep.hook = print
trigger.trigger.beep.arguments = ""
trigger.trigger.beep.conditions = "${tg_highlight} || ${tg_msg_pv}"
trigger.trigger.beep.regex = ""
trigger.trigger.beep.command = "/print -beep"
trigger.trigger.beep.return_code = ok
----

[[trigger_execution]]
==== Execution

When a trigger callback is called, following actions are executed, in this
order, if triggers are globally enabled and if the trigger itself is enabled:

. check trigger conditions: if false, exit
. replace text in trigger using regular expression(s)
. execute command(s)
. exit with a return code (except for hooks 'modifier' and 'focus').

[[trigger_hook_arguments]]
==== Hook arguments

The arguments depend on the hook used. They are separated by semicolons.

[width="100%",cols="2,6,7",options="header"]
|===
| Hook | Arguments | Examples

| signal |
  1. signal name (priority allowed) (required) +
  2. signal name (priority allowed) +
  3. ... |
  `*,irc_in_privmsg` +
  `*,irc_in_privmsg;*,irc_in_notice` +
  `signal_sigwinch`

| hsignal |
  1. signal name (priority allowed) (required) +
  2. signal name (priority allowed) +
  3. ... |
  `nicklist_nick_added`

| modifier |
  1. modifier name (priority allowed) (required) +
  2. modifier name (priority allowed) +
  3. ... |
  `weechat_print` +
  `5000\|input_text_display;5000\|history_add`

| print |
  1. buffer name +
  2. tags +
  3. message +
  4. strip colors (0/1) |
  `irc.freenode.*` +
  `irc.freenode.#weechat` +
  `irc.freenode.#weechat;irc_notice` +
  `*;;;1`

| command |
  1. command name (priority allowed) (required) +
  2. description +
  3. arguments +
  4. description of arguments +
  5. completion |
  `test` +
  `5000\|test`

| command_run |
  1. command (priority allowed) (required) +
  2. command (priority allowed) +
  3. ... |
  `/cmd arguments`

| timer |
  1. interval in milliseconds (required) +
  2. alignment on second (default: 0) +
  3. max number of calls (default: 0, which means "no end") |
  `3600000` +
  `60000;0;5`

| config |
  1. option name (priority allowed) (required) +
  2. option name (priority allowed) +
  3. ... |
  `weechat.look.*`

| focus |
  1. area name (priority allowed) (required) +
  2. area name (priority allowed) +
  3. ... |
  `buffer_nicklist`
|===

[[trigger_conditions]]
==== Conditions

The conditions are used to continue processing in trigger, or stop everything.

They are evaluated, and data available in callback can be used
(see <<trigger_callback_data,data in callbacks>> and command
<<command_weechat_eval,/eval>>).

Example: the default 'beep' trigger uses this condition to make a beep only on
highlight or private message:

----
${tg_highlight} || ${tg_msg_pv}
----

[[trigger_regex]]
==== Regular expression

The regular expression is used to change variables in callback hashtable.

The format is: "/regex/replace" or "/regex/replace/var" (where 'var' is a
variable of the hashtable). +
If 'var' is not specified, the default variable is used, it depends on hook
type:

[width="50%",cols="4,5m",options="header"]
|===
| Hook        | Default variable
| signal      | tg_signal_data
| hsignal     |
| modifier    | tg_string
| print       | tg_message
| command     | tg_argv_eol1
| command_run | tg_command
| timer       | tg_remaining_calls
| config      | tg_value
| focus       |
|===

Many regular expressions can be separated by a space, for example:
"/regex1/replace1/var1 /regex2/replace2/var2".

The char "/" can be replaced by any char (one or more identical chars).

Matching groups can be used in "replace":

* `${re:0}` to `${re:99}`: `${re:0}` is the whole match, `${re:1}` to
  `${re:99}` are groups captured
* `${re:+}`: the last match (with highest number)
* `${hide:c,${re:N}}`: match "N" with all chars replaced by "c"
  (example: `${hide:*,${re:2}}` is the group #2 with all chars replaced by
  `*`).

Example: use bold for words between "*":

----
/\*(\S+)\*/*${color:bold}${re:1}${color:-bold}*/
----

Example: default trigger 'server_pass' uses this regular expression to hide
password in commands `/server` and `/connect` (chars in passwords are replaced
by `*`):

----
==^(/(server|connect) .*-(sasl_)?password=)(\S+)(.*)==${re:1}${hide:*,${re:4}}${re:5}
----

[NOTE]
In this example, the delimiter used is "==" because there is a "/" in the
regular expression.

[[trigger_command]]
==== Command

The command is executed after replacement of text with the regular expression.
Many commands can be separated by semicolons.

It is evaluated (see command <<command_weechat_eval,/eval>>) and text replaced
with a regular expression can be used in the command.

Example: default 'beep' trigger uses this command to make a beep (BEL):

----
/print -beep
----

[[trigger_callback_data]]
==== Data in callbacks

Data received in callbacks are stored in hashtables (pointers and strings) and
can be used in following options:

* 'conditions'
* 'regex'
* 'command'

The content of hashtables depend on the hook type.

A convenient way to see data in a trigger is to open trigger monitor buffer,
using the command:

----
/trigger monitor
----

[[trigger_data_signal]]
===== Signal

The "signal" callback sets following variables in hashtable:

[width="100%",cols="3m,2,14",options="header"]
|===
| Variable       | Type   | Description
| tg_signal      | string | Name of signal
| tg_signal_data | string | Data sent with the signal
|===

If the signal contains an IRC message, the message is parsed and following data
is added in hashtable:

[width="100%",cols="3m,2,14",options="header"]
|===
| Variable             | Type   | Description
| server               | string | Name of server (example: "freenode")
| tags                 | string | Tags in message (rarely used)
| message_without_tags | string | Message without tags
| nick                 | string | Nick
| host                 | string | Hostname
| command              | string | IRC command (example: "PRIVMSG", "NOTICE", ...)
| channel              | string | IRC channel
| arguments            | string | Arguments of command (includes value of 'channel')
|===

[[trigger_data_hsignal]]
===== Hsignal

The "hsignal" callback sets following variables in hashtable:

[width="100%",cols="3m,2,14",options="header"]
|===
| Variable  | Type   | Description
| tg_signal | string | Name of signal
|===

The hashtable contains all keys/values from hashtable received (type:
string/string).

[[trigger_data_modifier]]
===== Modifier

The "modifier" callback sets following variables in hashtable:

[width="100%",cols="3m,2,14",options="header"]
|===
| Variable          | Type   | Description
| tg_modifier       | string | Name of modifier
| tg_modifier_data  | string | Data sent with modifier
| tg_string         | string | The string that can be modified
| tg_string_nocolor | string | The string without color codes
|===

For the 'weechat_print' modifier, variables using message tags are added (see
<<trigger_data_print,hook print>> below), and following variables:

[width="100%",cols="3m,2,14",options="header"]
|===
| Variable           | Type    | Description
| buffer             | pointer | Buffer where message is printed
| tg_plugin          | string  | Plugin of buffer where message is printed
| tg_buffer          | string  | Full name of buffer where message is printed
| tg_prefix          | string  | Prefix of message printed
| tg_prefix_nocolor  | string  | Prefix without color codes
| tg_message         | string  | Message printed
| tg_message_nocolor | string  | Message without color codes
|===

If the modifier contains an IRC message, the message is parsed and extra data is
added in hashtable (see <<trigger_data_signal,hook signal>>).

[[trigger_data_print]]
===== Print

The "print" callback sets following variables in hashtable:

[width="100%",cols="3m,2,14",options="header"]
|===
| Variable           | Type    | Description
| buffer             | pointer | Buffer
| tg_date            | string  | Message date/time (format: `YYYY-MM-DD hh:mm:ss`)
| tg_displayed       | string  | "1" if displayed, "0" if line filtered
| tg_highlight       | string  | "1" if highlight, otherwise "0"
| tg_prefix          | string  | Prefix
| tg_prefix_nocolor  | string  | Prefix without color codes
| tg_message         | string  | Message
| tg_message_nocolor | string  | Message without color codes
|===

Variables set using tags in message (they are set in modifier 'weechat_print'
too):

[width="100%",cols="3m,2,14",options="header"]
|===
| Variable           | Type   | Description
| tg_tags            | string | Tags of message (with comma added at beginning/end of string)
| tg_tags_count      | string | Number of tags in message
| tg_tag_nick        | string | Nick (from tag "nick_xxx")
| tg_tag_prefix_nick | string | Color of nick in prefix (from tag "prefix_nick_ccc")
| tg_tag_host        | string | User name and host, format: username@host (from tag "host_xxx")
| tg_tag_notify      | string | Notify level ('none', 'message', 'private', 'highlight')
| tg_notify          | string | Notify level, if different from 'none'
| tg_msg_pv          | string | "1" for a private message, otherwise "0"
|===

[[trigger_data_command]]
===== Command

The "command" callback sets following variables in hashtable:

[width="100%",cols="3m,2,14",options="header"]
|===
| Variable     | Type    | Description
| buffer       | pointer | Buffer
| tg_argvN     | string  | Argument #N
| tg_argv_eolN | string  | From argument #N until end of arguments
|===

[[trigger_data_command_run]]
===== Command_run

The "command_run" callback sets following variables in hashtable:

[width="100%",cols="3m,2,14",options="header"]
|===
| Variable   | Type    | Description
| buffer     | pointer | Buffer
| tg_command | string  | Command executed
|===

[[trigger_data_timer]]
===== Timer

The "timer" callback sets following variables in hashtable:

[width="100%",cols="3m,2,14",options="header"]
|===
| Variable           | Type   | Description
| tg_remaining_calls | string | Number of remaining calls
| tg_date            | string | Current date/time (format: `YYYY-MM-DD hh:mm:ss`)
|===

[[trigger_data_config]]
===== Config

The "config" callback sets following variables in hashtable:

[width="100%",cols="3m,2,14",options="header"]
|===
| Variable  | Type   | Description
| tg_option | string | Option
| tg_value  | string | Value
|===

[[trigger_data_focus]]
===== Focus

The "focus" callback sets following variables in hashtable:

[width="100%",cols="3m,2,14",options="header"]
|===
| Variable | Type    | Description
| window   | pointer | Window
| buffer   | pointer | Buffer
|===

The hashtable contains all keys/values from hashtable received (type:
string/string).

[[trigger_examples]]
==== Examples

[[trigger_example_url_color]]
===== Color for URLs

Display URLs in green:

----
/trigger add url_color modifier weechat_print "${tg_notify}" "==\S+://\S+==${color:green}$0${color:reset}=="
----

[NOTE]
The simple regex used to detect URL may not catch well all URLs, but it is
faster than a complex regex.

[[trigger_example_auto_pong]]
===== Auto pong on ping queries

When someone sends a "ping" in a private buffer, this trigger will auto-reply
with `pong`:

----
/trigger add pong print "" "${type} == private && ${tg_message} == ping" "" "pong"
----

[[trigger_example_responsive_layout]]
===== Responsive layout

Following triggers can be used to customize things displayed when the size of
terminal is changed:

----
/trigger add resize_small signal signal_sigwinch "${info:term_width} < 100" "" "/bar hide nicklist"
/trigger add resize_big signal signal_sigwinch "${info:term_width} >= 100" "" "/bar show nicklist"
----

The triggers catch the signal "signal_sigwinch", which is sent by WeeChat when
signal SIGWINCH is received (when terminal size is changed).

The condition with `${info:term_width}` checks the width of terminal (you can
also use `${info:term_height}` if needed).

In the example, when the terminal becomes small, the nicklist is hidden. And the
bar is restored when the width is greater or equal to 100 chars.

[[trigger_example_config_save]]
===== Automatic save of configuration

You can automatically save configuration files (`*.conf`), for example each
hour:

----
/trigger add cfgsave timer 3600000;0;0 "" "" "/mute /save"
----

Arguments for the timer hook are:

* '3600000': 3600 * 1000 milliseconds, the callback is called each hour
* '0': alignment on second (not aligned here)
* '0': max number of calls (0 = no end for the timer)

The command `/mute /save` will silently save configuration files (nothing
displayed on core buffer).

[[xfer_plugin]]
=== Xfer plugin

Xfer plugin brings:

* direct chat (between two hosts, without server): for example "DCC Chat" via
  IRC plugin
* file transfer, for example "DCC" via IRC plugin

[[xfer_options]]
==== Options (xfer.conf)

Sections:

[width="100%",cols="3m,6m,16",options="header"]
|===
| Section | Control command     | Description
| look    | /set xfer.look.*    | Look and feel
| color   | /set xfer.color.*   | Colors
| network | /set xfer.network.* | Network options
| file    | /set xfer.file.*    | Options for files sent/received
|===

Options:

include::autogen/user/xfer_options.asciidoc[]

[[xfer_commands]]
==== Commands

include::autogen/user/xfer_commands.asciidoc[]

[[support]]
== Support

Before asking for support, be sure you've read documentation and FAQ provided
with WeeChat.

For support with IRC, on server 'chat.freenode.net':

* official channels (with developers):
** '#weechat' (English)
** '#weechat-fr' (French)
* non-official channels:
** '#weechat-de' (German)

For other ways of support, see: https://weechat.org/dev/support