This reverts commit e64ab3c675.
This was causing incorrect conversion of strings "0x..." to pointers on systems
like Solaris/ILLUMOS.
And as a side effect, buffers were sometimes empty in weechat relay clients
like glowing-bear.
Now the function utf8_next_char with an empty string returns NULL instead of
the next char, which is most of the time after an allocated buffer.
And the function utf8_char_size with an empty string now returns 0 instead of
1.
This indirectly fixes a buffer overflow in function eval_string_range_chars
when the input string is empty (for example when doing `/eval -n ${chars:}`).
This commit introduces fuzz testing, for now on core functions, with 4 new
targets that are built on demand with CMake option `ENABLE_FUZZ` (build of
these tests is disabled by default):
- weechat_core_calc_fuzzer
- weechat_core_crypto_fuzzer
- weechat_core_string_fuzzer
- weechat_core_utf8_fuzzer
Building WeeChat 4.6.0 on OpenBSD failed with the following error.
> /usr/ports/pobj/weechat-4.6.0/weechat-4.6.0/src/plugins/perl/weechat-perl.c:356:13: error: expected ')'
> function) < 0)
> ^
> /usr/ports/pobj/weechat-4.6.0/weechat-4.6.0/src/plugins/perl/weechat-perl.c:352:9: note: to match this '('
> if (weechat_asprintf (
> ^
> /usr/ports/pobj/weechat-4.6.0/weechat-4.6.0/src/plugins/perl/../weechat-plugin.h:1312:31: note: expanded from macro 'weechat_asprintf'
> (weechat_plugin->asprintf)(__result, __fmt, ##__argz)
On further inspection, the line in question was recently altered in
099e11d7b8, where a comma was forgotten in the
else branch of the MULTIPLICITY ifdef.
After adding the comma, WeeChat builds as usual.
At the moment, building WeeChat triggers several thousand -Wstrict-prototypes
diagnostics. This is due to its source code using an empty argument list for
functions and function pointers that take no arguments, instead of explicitly
declaring that they take no arguments by using a void list.
This commit replaces all empty argument lists with a void list.
Note that Ruby's headers also suffer the same problem, which WeeChat can't
do anything to fix. Thus, building WeeChat with the Ruby plugin enabled
will still issue approximately 30 such diagnostics.
This fixes a bug when writing configuration files with a wrong locale: now
UTF-8 is kept and written in files instead of string converted using a wrong
charset.
New options are added to configure the chars displayed for spaces and
tabulations:
- weechat.look.whitespace_char: char for spaces
- weechat.look.tab_whitespace_char: first char for tabulations
New default key:
- Alt+Ctrl+l (L): toggle execution of commands: remote/local
New options:
- relay.api.remote_input_cmd_local: text displayed for command executed locally
- relay.api.remote_input_cmd_remote: text displayed for command executed on the
remote WeeChat
src/gui/curses/gui-curses-main.c: In function ‘gui_main_loop’:
src/gui/curses/gui-curses-main.c:399:33: error: passing argument 2 of ‘signal_catch’ from incompatible pointer type [-Wincompatible-pointer-types]
399 | signal_catch (SIGWINCH, &gui_main_signal_sigwinch);
| ^~~~~~~~~~~~~~~~~~~~~~~~~
| |
| void (*)(void)
In file included from src/gui/curses/gui-curses-main.c:38:
src/gui/curses/../../core/core-signal.h:33:46: note: expected ‘void (*)(int)’ but argument is of type ‘void (*)(void)’
33 | extern void signal_catch (int signum, void (*handler)(int));
| ~~~~~~~^~~~~~~~~~~~~
This follows the recommendation from Pythons documentation for
PyModule_GetDict where it says:
It is recommended extensions use other PyModule_* and PyObject_*
functions rather than directly manipulate a module’s __dict__.
This value determines the size of the per-module memory area. Setting
this value to -1 as it was before this change means that the module has
global state and therefore does not support subinterpreters.
However, subinterpreters are used to run the Python scripts, so the
weechat module has to support subinterpreters. Therefore we should set
this value to 0 as no per-module memory is required.
This seems to fix the crash reported in #2046 without the need for the
workaround added in commit 85c7494dc (it does for me when testing with
Python 3.12.0 at least).
This change came up as a suggestion in cpython's issue tracker where it
was pointed out that using modules with m_size set to -1 is not
supported in subinterpreters. See these two comments:
https://github.com/python/cpython/issues/116510#issuecomment-2377915771https://github.com/python/cpython/issues/116510#issuecomment-2389485369
It's not completely clear to me what is required for a module to support
subinterpreters and re-initialization (which is required for setting
m_size to 0), but https://peps.pythondiscord.com/pep-0489/ says:
A simple rule of thumb is: Do not define any static data, except
built-in types with no mutable or user-settable class attributes.
The only static data we define is of type int and str, so I think it
should be fine.
This fixes the following CMake warning:
CMake Warning (dev) at src/gui/curses/normal/CMakeLists.txt:73 (add_custom_command):
Exactly one of PRE_BUILD, PRE_LINK, or POST_BUILD must be given. Assuming
POST_BUILD to preserve backward compatibility.
Policy CMP0175 is not set: add_custom_command() rejects invalid arguments.
Run "cmake --help-policy CMP0175" for policy details. Use the cmake_policy
command to set the policy and suppress this warning.
This warning is for project developers. Use -Wno-dev to suppress it.
This fixes a crash which would happen if you scrolled the script buffer
and then did a search which got fewer search results than the index of
the selected line before the search. E.g. press page down to go to the
second page and then search for `test`.
It turns out that Debian has reverted the commit in Perl that broke the
locale in their 5.38 branch, so it did not have the issue. However, the
workaround we added to fix the locale apparently makes the version
Debian/Ubuntu has crash on perl_destruct. I'm not sure why it makes it
crash, but since it doesn't crash on newer Perl versions, I'm assuming
that it's another bug with the locale handling in that Perl version.
To avoid the crash, make sure to only set the locale if we detect that
it has been broken by Perl. We do this by checking if the value returned
by wcwidth (160) (the first non-ascii printable character) has changed.
If this value is not the same after the call to perl_construct, the
locale has been broken.
I moved the call to Perl_setlocale to right after perl_construct, as the
call to perl_construct is what breaks the locale.
Apparently the issue with the locale being reset with Perl 5.38 can
cause a crash when unloading the scripts on some systems (at least
Ubuntu 24.04). There was a workaround added in commit f4b9cad72, but it
doesn't work to avoid the crash. However if we set LC_ALL instead of
LC_CTYPE the crash doesn't occur.
Fixes#2187
If a request repeats the same header name multiple times, merge the
header values into a comma separated string. Previously, only the last
header specified would be used.
For header fields that are defined as a comma-separated list, a client
may choose to send it as multiple headers instead of one header with
comma-separated values. The specification says that these are
equivalent, so we can therefore join the headers into a comma-separated
string.
This is specified at https://datatracker.ietf.org/doc/html/rfc7230#section-3.2.2
which says:
A sender MUST NOT generate multiple header fields with the same field
name in a message unless either the entire field value for that
header field is defined as a comma-separated list [i.e., #(values)]
or the header field is a well-known exception (as noted below).
A recipient MAY combine multiple header fields with the same field
name into one "field-name: field-value" pair, without changing the
semantics of the message, by appending each subsequent field value to
the combined field value in order, separated by a comma. The order
in which header fields with the same field name are received is
therefore significant to the interpretation of the combined field
value; a proxy MUST NOT change the order of these field values when
forwarding a message.
The API for connecting to WebSockets in browsers unfortunately doesn't
support setting any Authorization header. This means that before this
commit it was impossible to connect to the API relay from a web browser.
The only thing that can be set apart from the URL is the
Sec-WebSocket-Protocol header. Therefore this allows you to send the
auth token in this header.
This is a weird way to send auth, but it seems to be the best one that
makes it possible for browsers to connect. Kubernetes also does it this
way: https://github.com/kubernetes/kubernetes/pull/47740
Here is a post describing the different ways to make it possible for a
browser to authenticate against a websocket connection, and it also
recommends doing it this way:
https://stackoverflow.com/questions/4361173/http-headers-in-websockets-client-api/77060459#77060459
Note that when this header is used to pass auth, the client also needs
to specify the `api.weechat` sub protocol. This is because the client
and server have to agree on a sub protocol when this header is
specified, and in order to not send the fake protocol used for auth back
to the client, we require specifying the protocol `api.weechat`, which
the server then returns to the client. This is only necessary when the
Sec-WebSocket-Protocol header is used. If the Authorization header is
used for auth as before, nothing changes.
Detail of changes:
- the save of upgrade files in plugins is now done as soon as the "upgrade"
signal is received, and not when the plugin is unloaded (it was too late to
detect any problem and prevent the upgrade to happen)
- if the write of an upgrade file fails, the signal callback in plugin now
returns WEECHAT_RC_ERROR and WeeChat checks this code to stop the upgrade as
soon as this return code is received
- a new flag is added in plugin structure: unload_with_upgrade, it is set to 1
before unloading all plugins when upgrade will happen (all *.upgrade files
are then already successfully written).
For now the only supported flag is:
- "stop_on_error": stop execution of callbacks immediately after an
error (ie return code of callback is WEECHAT_RC_ERROR) and return this code
(by default execute all callbacks and return the last return code, or return
WEECHAT_RC_EAT immediately if a callback returns this)
Example:
hook_signal_send("[flags:stop_on_error]my_signal", WEECHAT_HOOK_SIGNAL_STRING, "test");
A performance issue was happening when buffers are moved to another position
and when the hotlist contains a lot of buffers: each time a signal
"buffer_moved" is sent, the hotlist is sorted again.
This fix delays the resort of hotlist after all the moves are done using a
timer with a very small delay (one millisecond).
Since WeeChat 4.0.0, the actions are now case sensitive and must be typed as
lower case.
This fixes the help line displayed on top of relay and xfer buffers: letters
for actions are now displayed with lower case instead of upper case.
Bump the requirement to v3.3.0 as available in Ubuntu 16.04 (3.4.10) and
Debian 10 (3.6.7). It was released around 10 years ago and any remotely
supported distribution has newer version.
As result, we can remove hundred+ lines of #ifdef spaghetti code.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Remove the local cmake file and associated hacks used to manage GnuTLS.
This gives us less build-system glue code and makes it easier to enforce
a minimum version for GnuTLS.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Bump the requirement to v7.47.0 as available in Ubuntu 16.04 (7.47.0)
and Debian 10 (7.64.0). It was released around 9 years ago and any
remotely supported distribution has newer version.
As result we can adjust the tools/check_curl_symbols.py script to omit
the ~70% of the guards and simplify the code base.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
The cURL project has provided a pkg-config file for well over a decade
now. Just use that instead of the cmake one, since the latter also
checks for misc curl components, unusual library names (libcurl_imp)
which is not something we need.
In addition, this will make enforcing minimum version much easier.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
The curl option handling seems to be non-functional since it suffers
from two distinct issues. The regular expression tries to match options
that we're not interested in and the symbol name is lacking the proper
prefix.
Adjust to match only on what we need and construct the name
appropriately... Fix the issues flagged by the updated script.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
When the environment variable `RETRY_BUILD` is set to `1`, the file
`debian/rules` is patched to run `dh_auto_build` multiple times, until the
build succeeds.
This is a workaround for an issue with the build in an arm64 chroot, where the
compiler randomly segfaults.
The gcrypt, gnutls, libcurl and zlib are core libraries/components that
we always build against. Remove the #ifdef checks - the symbols must be
available at build.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Seemingly unused for ~12 years, since commit a99d13601 ("core: add new
plugin "script" (scripts manager, replacing scripts weeget.py and
script.pl)")
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
With the circular dependency resolved, we no longer need this variable.
Add the respective objects directly, in the same order as seen in the
tests.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
In order to resolve the circular dependency, we need to annotate the
respective static libraries as "object" libraries.
This requires cmake 3.12, where Debian 10 (old old stable) and Ubuntu
20.04 have 3.13 and 3.16 respectively.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
To ease the initial hurdle of using the proper formatting across files,
introduce a simple .editorconfig file.
Nearly every common editor supports it OOTB these days, including the
GitHub and GitLab web editors.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Before parsing IRC messages, they were almost all changed to convert IRC color
codes to WeeChat color codes, which caused some bugs when storing data like
account and real names (stored with WeeChat color codes instead of IRC colors).
Now the messages are parsed as-is, then the colors are converted only when
strings are displayed in a buffer by `weechat_printf()`.
This should definitely fix the crash with Python 3.12, even when scripts are
auto-loaded (the previous fix was working only when the scripts are loaded
manually).
Python 3.12 has a bug where it crashes when you unload all the
interpreters unless you make sure to unload the first interpreter you
loaded last. For some reason, loading the eval interpreter before any
scripts also seems to prevent the issue, even if the eval interpreter is
unloaded before the other interpreters.
So this just evals an empty string at the end of initing the Python
plugin if the Python version is 3.12, to make sure the eval interpreter
is loaded first.
Fixes#2046
Syntax is one of:
- `hdata_count:name[list]`: uses a hdata name and list
- `hdata_count:name[pointer]`: uses a hdata name and pointer (count starts at
this pointer)
This fixes a test failure when the test changing the option is executed before
this one:
…/tests/unit/plugins/relay/api/test-relay-api-protocol.cpp:799: error: Failure in TEST(RelayApiProtocolWithClient, RecvJson)
expected <HTTP/1.1 101 Switching Protocols
Upgrade: websocket
Connection: Upgrade
Sec-WebSocket-Accept: Z5uTZwvwYNDm9w4HFGk26ijp/p0=
>
but was <HTTP/1.1 403 Forbidden
Content-Length: 0
>
difference starts at position 9 at: < HTTP/1.1 403 Forbid>
Use pkg-config to detect libgcrypt, since command `libgcrypt-config` is not
available any more.
Remove patches for Debian/Raspbian Buster and Ubuntu Bionic: detection of
libgcrypt don't work any more with version 1.8.4 on Debian Buster and 1.8.1 on
Ubuntu Bionic (both versions don't provide the file `libgcrypt.pc`).
1: error: Failure in TEST(RelayApiMsg, HotlistToJson)
1: expected <2024-05-26T10:29:37.716512Z>
1: but was <2024-05-26T10:29:37.000000Z>
1: difference starts at position 20 at: <T10:29:37.000000Z >
This fixes the following warning emitted by gcc:
…/relay-http.c:1207:32: warning: ‘%s’ directive output may be truncated writing up to 1023 bytes into a region of size 64 [-Wformat-truncation=]
1207 | "%s[%d bytes data]",
| ^~
1208 | str_header,
| ~~~~~~~~~~
…/relay-http.c:1207:31: note: directive argument in the range [1, 2147483647]
1207 | "%s[%d bytes data]",
| ^~~~~~~~~~~~~~~~~~~
…/relay-http.c:1206:21: note: ‘snprintf’ output between 15 and 1047 bytes into a destination of size 64
1206 | snprintf (raw_message, length_raw,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1207 | "%s[%d bytes data]",
| ~~~~~~~~~~~~~~~~~~~~
1208 | str_header,
| ~~~~~~~~~~~
1209 | *ptr_body_size);
| ~~~~~~~~~~~~~~~
Changes are now grouped by category:
- `Changed`: changes in existing features
- `Added`: new features
- `Removed`: removed features
- `Fixed`: bug fixed
Changes are also sorted by importance: breaking changes and most important
changes first in each category.
Link to release notes is mentioned in each release for which manual actions are
required upon upgrade.
This prevents unexpected updates of input on remote buffer whenever something
changes in the buffer, like a local variable, but with the same unchanged
input.
New fields returned:
- "input" (string): content of input
- "input_position" (integer): position in input (starts at 0)
- "input_multiline" (boolean): true if the buffer allows multiline input
This parameter is the number of lines to return for buffers with free content.
Its default value is `0` if "lines" is set to `0`, otherwise all buffer lines
are returned.
weechat.h already handles libintl.h and defining suitable macros.
Including it again does nothing other than emit a compile warning when
compiling without NLS:
In file included from /var/tmp/portage/net-irc/weechat-9999/work/weechat-9999/src/core/core-doc.c:35:
/var/tmp/portage/net-irc/weechat-9999/work/weechat-9999/src/core/weechat.h:49: warning: "gettext" redefined
49 | #define gettext(string) (string)
|
In file included from /var/tmp/portage/net-irc/weechat-9999/work/weechat-9999/src/core/core-doc.c:30:
/usr/include/libintl.h:109: note: this is the location of the previous definition
109 | # define gettext(msgid) dgettext (NULL, msgid)
If buffer->input_get_any_user_data is set to 1, any command executed via a
buffer local key is considered as user input and then sent to the buffer
callback, instead of being executed directly.
This is used on relay remote buffers, to execute the command on the remote
instead of locally.
When 4 directories are received, the state directory is initialized with the
data directory.
This fixes the following error on `/upgrade`:
Error: wrong number of paths for home directories (expected: 1 or 5, received: 4)
The id is a "long long" variable with the current time (microseconds
precision).
It is guaranteed to be unique for all groups and nicks inside the buffer, and
the same number is never used again in the same buffer, during the lifetime of
the process.
It persists and is unchanged after `/upgrade`.
Connection to remote:
- handshake: offer support for all supported hash algorithms
- network connect with a socket
- upgrade to websocket and authenticate with remote (password/TOTP)
- check websocket response
- get list of buffers (not used yet)
Note: connection to remote with TLS or a proxy is not yet supported.
When a CTCP request is received on a channel, WeeChat replies to the nick and
it is now displayed in the server buffer instead of the channel, as the target
is a nick and not a channel.
Restore original signals caught: "buffer_moved" and "buffer_closed", and the
signal "buffer_localvar_*" is added so that any local variable
added/changed/removed triggers a re-sort of hotlist.
When you run /input search_stop it should scroll to the scroll position
the buffer was at before starting the search, rather than to the bottom
of the buffer.
Fixes a regression introduced in commit b83b428c5cFixes#2093
The id is a "long long" variable with the current time (microseconds
precision).
It is guaranteed to be unique for all buffers, and the same number is never
used again, during the lifetime of the process.
It persists and is unchanged after `/upgrade`.
Some parameters of command `/script` were renamed in commit
85b5bacfe3 but the default mouse keys were not
changed and still using the old parameters names.
The server option "autojoin_delay" adds a delay before autojoin.
The server option "command_delay" is now used to add a delay before the
execution of the command.
On upgrade from an old version, the option "command_delay" is copied to
"autojoin_delay" (in old versions, "command_delay" was applied after the
execution of command and before the autojoin).
Before submitting a bug, please check that it has not already been reported by searching in [open and closed bugs](https://github.com/weechat/weechat/issues?q=is%3Aissue+label%3Abug).
If you don't use the latest version, please try if possible with the latest stable release to be sure the issue is still present and report the issue on this version.
**IMPORTANT**:please do not report any security issue here, see [Contributing.adoc](https://github.com/weechat/weechat/blob/master/Contributing.adoc#security-reports).
**IMPORTANT**:please do not report any security issue here, see [CONTRIBUTING.md](https://github.com/weechat/weechat/blob/main/CONTRIBUTING.md#security-reports).
- type:textarea
id:bug-description
@@ -85,9 +89,9 @@ body:
- type:input
id:os-version
attributes:
label:What OS are you using?
label:What OS/distribution are you using?
description:Name of the operating system and its version.
- please read the [FAQ](https://weechat.org/doc/weechat/faq) and [documentation](https://weechat.org/doc/weechat/)
- please ask on#weechat channel (on server irc.libera.chat).
**IMPORTANT**:please do not report any security issue here, see [CONTRIBUTING.md](https://github.com/weechat/weechat/blob/main/CONTRIBUTING.md#security-reports).
in Developer's guide, which contains info about styles used, naming convention
and other useful info.
== Semantic versioning
Since version 4.0.0, WeeChat is following a "practical" semantic versioning.
It is based on https://semver.org/[Semantic Versioning] but in a less strict way: breaking changes in API with low user impact don't bump the major version.
The version number is on three digits `X.Y.Z`, where:
* `X` is the major version
* `Y` is the minor version
* `Z` is the patch version.
Rules to increment the version number:
* the *major version* number (`X`) is incremented only when intentional breaking changes target feature areas that are actively consumed by users, scripts or C plugin API
* the *minor version* number (`Y`) is incremented for any new release of WeeChat that includes new features and bug fixes, possibly breaking API with low impact on users
* the *patch version* number (`Z`) is reserved for releases that address severe bugs or security issues found after the release.
For more information, see the https://specs.weechat.org/specs/2023-003-practical-semantic-versioning.html[specification].
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
Preamble
The GNU General Public License is a free, copyleft license for software and other kinds of works.
The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users. We, the Free Software Foundation, use the GNU General Public License for most of our software; it applies also to any other work released this way by its authors. You can apply it to your programs, too.
When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.
To protect your rights, we need to prevent others from denying you these rights or asking you to surrender the rights. Therefore, you have certain responsibilities if you distribute copies of the software, or if you modify it: responsibilities to respect the freedom of others.
For example, if you distribute copies of such a program, whether gratis or for a fee, you must pass on to the recipients the same freedoms that you received. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights.
Developers that use the GNU GPL protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License giving you legal permission to copy, distribute and/or modify it.
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Some devices are designed to deny users access to install or run modified versions of the software inside them, although the manufacturer can do so. This is fundamentally incompatible with the aim of protecting users' freedom to change the software. The systematic pattern of such abuse occurs in the area of products for individuals to use, which is precisely where it is most unacceptable. Therefore, we have designed this version of the GPL to prohibit the practice for those products. If such problems arise substantially in other domains, we stand ready to extend this provision to those domains in future versions of the GPL, as needed to protect the freedom of users.
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The precise terms and conditions for copying, distribution and modification follow.
TERMS AND CONDITIONS
0. Definitions.
“This License” refers to version 3 of the GNU General Public License.
“Copyright” also means copyright-like laws that apply to other kinds of works, such as semiconductor masks.
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A “covered work” means either the unmodified Program or a work based on the Program.
To “propagate” a work means to do anything with it that, without permission, would make you directly or secondarily liable for infringement under applicable copyright law, except executing it on a computer or modifying a private copy. Propagation includes copying, distribution (with or without modification), making available to the public, and in some countries other activities as well.
To “convey” a work means any kind of propagation that enables other parties to make or receive copies. Mere interaction with a user through a computer network, with no transfer of a copy, is not conveying.
An interactive user interface displays “Appropriate Legal Notices” to the extent that it includes a convenient and prominently visible feature that (1) displays an appropriate copyright notice, and (2) tells the user that there is no warranty for the work (except to the extent that warranties are provided), that licensees may convey the work under this License, and how to view a copy of this License. If the interface presents a list of user commands or options, such as a menu, a prominent item in the list meets this criterion.
1. Source Code.
The “source code” for a work means the preferred form of the work for making modifications to it. “Object code” means any non-source form of a work.
A “Standard Interface” means an interface that either is an official standard defined by a recognized standards body, or, in the case of interfaces specified for a particular programming language, one that is widely used among developers working in that language.
The “System Libraries” of an executable work include anything, other than the work as a whole, that (a) is included in the normal form of packaging a Major Component, but which is not part of that Major Component, and (b) serves only to enable use of the work with that Major Component, or to implement a Standard Interface for which an implementation is available to the public in source code form. A “Major Component”, in this context, means a major essential component (kernel, window system, and so on) of the specific operating system (if any) on which the executable work runs, or a compiler used to produce the work, or an object code interpreter used to run it.
The “Corresponding Source” for a work in object code form means all the source code needed to generate, install, and (for an executable work) run the object code and to modify the work, including scripts to control those activities. However, it does not include the work's System Libraries, or general-purpose tools or generally available free programs which are used unmodified in performing those activities but which are not part of the work. For example, Corresponding Source includes interface definition files associated with source files for the work, and the source code for shared libraries and dynamically linked subprograms that the work is specifically designed to require, such as by intimate data communication or control flow between those subprograms and other parts of the work.
The Corresponding Source need not include anything that users can regenerate automatically from other parts of the Corresponding Source.
The Corresponding Source for a work in source code form is that same work.
2. Basic Permissions.
All rights granted under this License are granted for the term of copyright on the Program, and are irrevocable provided the stated conditions are met. This License explicitly affirms your unlimited permission to run the unmodified Program. The output from running a covered work is covered by this License only if the output, given its content, constitutes a covered work. This License acknowledges your rights of fair use or other equivalent, as provided by copyright law.
You may make, run and propagate covered works that you do not convey, without conditions so long as your license otherwise remains in force. You may convey covered works to others for the sole purpose of having them make modifications exclusively for you, or provide you with facilities for running those works, provided that you comply with the terms of this License in conveying all material for which you do not control copyright. Those thus making or running the covered works for you must do so exclusively on your behalf, under your direction and control, on terms that prohibit them from making any copies of your copyrighted material outside their relationship with you.
Conveying under any other circumstances is permitted solely under the conditions stated below. Sublicensing is not allowed; section 10 makes it unnecessary.
3. Protecting Users' Legal Rights From Anti-Circumvention Law.
No covered work shall be deemed part of an effective technological measure under any applicable law fulfilling obligations under article 11 of the WIPO copyright treaty adopted on 20 December 1996, or similar laws prohibiting or restricting circumvention of such measures.
When you convey a covered work, you waive any legal power to forbid circumvention of technological measures to the extent such circumvention is effected by exercising rights under this License with respect to the covered work, and you disclaim any intention to limit operation or modification of the work as a means of enforcing, against the work's users, your or third parties' legal rights to forbid circumvention of technological measures.
4. Conveying Verbatim Copies.
You may convey verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice; keep intact all notices stating that this License and any non-permissive terms added in accord with section 7 apply to the code; keep intact all notices of the absence of any warranty; and give all recipients a copy of this License along with the Program.
You may charge any price or no price for each copy that you convey, and you may offer support or warranty protection for a fee.
5. Conveying Modified Source Versions.
You may convey a work based on the Program, or the modifications to produce it from the Program, in the form of source code under the terms of section 4, provided that you also meet all of these conditions:
a) The work must carry prominent notices stating that you modified it, and giving a relevant date.
b) The work must carry prominent notices stating that it is released under this License and any conditions added under section 7. This requirement modifies the requirement in section 4 to “keep intact all notices”.
c) You must license the entire work, as a whole, under this License to anyone who comes into possession of a copy. This License will therefore apply, along with any applicable section 7 additional terms, to the whole of the work, and all its parts, regardless of how they are packaged. This License gives no permission to license the work in any other way, but it does not invalidate such permission if you have separately received it.
d) If the work has interactive user interfaces, each must display Appropriate Legal Notices; however, if the Program has interactive interfaces that do not display Appropriate Legal Notices, your work need not make them do so.
A compilation of a covered work with other separate and independent works, which are not by their nature extensions of the covered work, and which are not combined with it such as to form a larger program, in or on a volume of a storage or distribution medium, is called an “aggregate” if the compilation and its resulting copyright are not used to limit the access or legal rights of the compilation's users beyond what the individual works permit. Inclusion of a covered work in an aggregate does not cause this License to apply to the other parts of the aggregate.
6. Conveying Non-Source Forms.
You may convey a covered work in object code form under the terms of sections 4 and 5, provided that you also convey the machine-readable Corresponding Source under the terms of this License, in one of these ways:
a) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by the Corresponding Source fixed on a durable physical medium customarily used for software interchange.
b) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by a written offer, valid for at least three years and valid for as long as you offer spare parts or customer support for that product model, to give anyone who possesses the object code either (1) a copy of the Corresponding Source for all the software in the product that is covered by this License, on a durable physical medium customarily used for software interchange, for a price no more than your reasonable cost of physically performing this conveying of source, or (2) access to copy the Corresponding Source from a network server at no charge.
c) Convey individual copies of the object code with a copy of the written offer to provide the Corresponding Source. This alternative is allowed only occasionally and noncommercially, and only if you received the object code with such an offer, in accord with subsection 6b.
d) Convey the object code by offering access from a designated place (gratis or for a charge), and offer equivalent access to the Corresponding Source in the same way through the same place at no further charge. You need not require recipients to copy the Corresponding Source along with the object code. If the place to copy the object code is a network server, the Corresponding Source may be on a different server (operated by you or a third party) that supports equivalent copying facilities, provided you maintain clear directions next to the object code saying where to find the Corresponding Source. Regardless of what server hosts the Corresponding Source, you remain obligated to ensure that it is available for as long as needed to satisfy these requirements.
e) Convey the object code using peer-to-peer transmission, provided you inform other peers where the object code and Corresponding Source of the work are being offered to the general public at no charge under subsection 6d.
A separable portion of the object code, whose source code is excluded from the Corresponding Source as a System Library, need not be included in conveying the object code work.
A “User Product” is either (1) a “consumer product”, which means any tangible personal property which is normally used for personal, family, or household purposes, or (2) anything designed or sold for incorporation into a dwelling. In determining whether a product is a consumer product, doubtful cases shall be resolved in favor of coverage. For a particular product received by a particular user, “normally used” refers to a typical or common use of that class of product, regardless of the status of the particular user or of the way in which the particular user actually uses, or expects or is expected to use, the product. A product is a consumer product regardless of whether the product has substantial commercial, industrial or non-consumer uses, unless such uses represent the only significant mode of use of the product.
“Installation Information” for a User Product means any methods, procedures, authorization keys, or other information required to install and execute modified versions of a covered work in that User Product from a modified version of its Corresponding Source. The information must suffice to ensure that the continued functioning of the modified object code is in no case prevented or interfered with solely because modification has been made.
If you convey an object code work under this section in, or with, or specifically for use in, a User Product, and the conveying occurs as part of a transaction in which the right of possession and use of the User Product is transferred to the recipient in perpetuity or for a fixed term (regardless of how the transaction is characterized), the Corresponding Source conveyed under this section must be accompanied by the Installation Information. But this requirement does not apply if neither you nor any third party retains the ability to install modified object code on the User Product (for example, the work has been installed in ROM).
The requirement to provide Installation Information does not include a requirement to continue to provide support service, warranty, or updates for a work that has been modified or installed by the recipient, or for the User Product in which it has been modified or installed. Access to a network may be denied when the modification itself materially and adversely affects the operation of the network or violates the rules and protocols for communication across the network.
Corresponding Source conveyed, and Installation Information provided, in accord with this section must be in a format that is publicly documented (and with an implementation available to the public in source code form), and must require no special password or key for unpacking, reading or copying.
7. Additional Terms.
“Additional permissions” are terms that supplement the terms of this License by making exceptions from one or more of its conditions. Additional permissions that are applicable to the entire Program shall be treated as though they were included in this License, to the extent that they are valid under applicable law. If additional permissions apply only to part of the Program, that part may be used separately under those permissions, but the entire Program remains governed by this License without regard to the additional permissions.
When you convey a copy of a covered work, you may at your option remove any additional permissions from that copy, or from any part of it. (Additional permissions may be written to require their own removal in certain cases when you modify the work.) You may place additional permissions on material, added by you to a covered work, for which you have or can give appropriate copyright permission.
Notwithstanding any other provision of this License, for material you add to a covered work, you may (if authorized by the copyright holders of that material) supplement the terms of this License with terms:
a) Disclaiming warranty or limiting liability differently from the terms of sections 15 and 16 of this License; or
b) Requiring preservation of specified reasonable legal notices or author attributions in that material or in the Appropriate Legal Notices displayed by works containing it; or
c) Prohibiting misrepresentation of the origin of that material, or requiring that modified versions of such material be marked in reasonable ways as different from the original version; or
d) Limiting the use for publicity purposes of names of licensors or authors of the material; or
e) Declining to grant rights under trademark law for use of some trade names, trademarks, or service marks; or
f) Requiring indemnification of licensors and authors of that material by anyone who conveys the material (or modified versions of it) with contractual assumptions of liability to the recipient, for any liability that these contractual assumptions directly impose on those licensors and authors.
All other non-permissive additional terms are considered “further restrictions” within the meaning of section 10. If the Program as you received it, or any part of it, contains a notice stating that it is governed by this License along with a term that is a further restriction, you may remove that term. If a license document contains a further restriction but permits relicensing or conveying under this License, you may add to a covered work material governed by the terms of that license document, provided that the further restriction does not survive such relicensing or conveying.
If you add terms to a covered work in accord with this section, you must place, in the relevant source files, a statement of the additional terms that apply to those files, or a notice indicating where to find the applicable terms.
Additional terms, permissive or non-permissive, may be stated in the form of a separately written license, or stated as exceptions; the above requirements apply either way.
8. Termination.
You may not propagate or modify a covered work except as expressly provided under this License. Any attempt otherwise to propagate or modify it is void, and will automatically terminate your rights under this License (including any patent licenses granted under the third paragraph of section 11).
However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation.
Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice.
Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License. If your rights have been terminated and not permanently reinstated, you do not qualify to receive new licenses for the same material under section 10.
9. Acceptance Not Required for Having Copies.
You are not required to accept this License in order to receive or run a copy of the Program. Ancillary propagation of a covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not require acceptance. However, nothing other than this License grants you permission to propagate or modify any covered work. These actions infringe copyright if you do not accept this License. Therefore, by modifying or propagating a covered work, you indicate your acceptance of this License to do so.
10. Automatic Licensing of Downstream Recipients.
Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that work, subject to this License. You are not responsible for enforcing compliance by third parties with this License.
An “entity transaction” is a transaction transferring control of an organization, or substantially all assets of one, or subdividing an organization, or merging organizations. If propagation of a covered work results from an entity transaction, each party to that transaction who receives a copy of the work also receives whatever licenses to the work the party's predecessor in interest had or could give under the previous paragraph, plus a right to possession of the Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get it with reasonable efforts.
You may not impose any further restrictions on the exercise of the rights granted or affirmed under this License. For example, you may not impose a license fee, royalty, or other charge for exercise of rights granted under this License, and you may not initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using, selling, offering for sale, or importing the Program or any portion of it.
11. Patents.
A “contributor” is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus licensed is called the contributor's “contributor version”.
A contributor's “essential patent claims” are all patent claims owned or controlled by the contributor, whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or selling its contributor version, but do not include claims that would be infringed only as a consequence of further modification of the contributor version. For purposes of this definition, “control” includes the right to grant patent sublicenses in a manner consistent with the requirements of this License.
Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor's essential patent claims, to make, use, sell, offer for sale, import and otherwise run, modify and propagate the contents of its contributor version.
In the following three paragraphs, a “patent license” is any express agreement or commitment, however denominated, not to enforce a patent (such as an express permission to practice a patent or covenant not to sue for patent infringement). To “grant” such a patent license to a party means to make such an agreement or commitment not to enforce a patent against the party.
If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the work is not available for anyone to copy, free of charge and under the terms of this License, through a publicly available network server or other readily accessible means, then you must either (1) cause the Corresponding Source to be so available, or (2) arrange to deprive yourself of the benefit of the patent license for this particular work, or (3) arrange, in a manner consistent with the requirements of this License, to extend the patent license to downstream recipients. “Knowingly relying” means you have actual knowledge that, but for the patent license, your conveying the covered work in a country, or your recipient's use of the covered work in a country, would infringe one or more identifiable patents in that country that you have reason to believe are valid.
If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring conveyance of, a covered work, and grant a patent license to some of the parties receiving the covered work authorizing them to use, propagate, modify or convey a specific copy of the covered work, then the patent license you grant is automatically extended to all recipients of the covered work and works based on it.
A patent license is “discriminatory” if it does not include within the scope of its coverage, prohibits the exercise of, or is conditioned on the non-exercise of one or more of the rights that are specifically granted under this License. You may not convey a covered work if you are a party to an arrangement with a third party that is in the business of distributing software, under which you make payment to the third party based on the extent of your activity of conveying the work, and under which the third party grants, to any of the parties who would receive the covered work from you, a discriminatory patent license (a) in connection with copies of the covered work conveyed by you (or copies made from those copies), or (b) primarily for and in connection with specific products or compilations that contain the covered work, unless you entered into that arrangement, or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to infringement that may otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU Affero General Public License into a single combined work, and to convey the resulting work. The terms of this License will continue to apply to the part which is the covered work, but the special requirements of the GNU Affero General Public License, section 13, concerning interaction through a network will apply to the combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of the GNU General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.
Each version is given a distinguishing version number. If the Program specifies that a certain numbered version of the GNU General Public License “or any later version” applies to it, you have the option of following the terms and conditions either of that numbered version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of the GNU General Public License, you may choose any version ever published by the Free Software Foundation.
If the Program specifies that a proxy can decide which future versions of the GNU General Public License can be used, that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the Program.
Later license versions may give you additional or different permissions. However, no additional obligations are imposed on any author or copyright holder as a result of your choosing to follow a later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the “copyright” line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an “about box”.
You should also get your employer (if you work as a programmer) or school, if any, to sign a “copyright disclaimer” for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see <https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read <https://www.gnu.org/philosophy/why-not-lgpl.html>.
*WeeChat* (Wee Enhanced Environment for Chat) is a free chat client, fast and
light, designed for many operating systems.
It is highly customizable and extensible with scripts.
Homepage: https://weechat.org/
== Features
* *Modular chat client*: WeeChat has a lightweight core and optional https://weechat.org/doc/weechat/user/#plugins[plugins]. All plugins (including https://weechat.org/doc/weechat/user/#irc[IRC]) are independent and can be unloaded.
* *Multi-platform*: WeeChat runs on GNU/Linux, *BSD, GNU/Hurd, Haiku, macOS and Windows (Bash/Ubuntu and Cygwin).
* *Multi-protocols*: WeeChat is designed to support multiple protocols by plugins, like IRC.
* *Standards-compliant*: the IRC plugin is compliant with RFCs https://datatracker.ietf.org/doc/html/rfc1459[1459], https://datatracker.ietf.org/doc/html/rfc2810[2810], https://datatracker.ietf.org/doc/html/rfc2811[2811], https://datatracker.ietf.org/doc/html/rfc2812[2812], https://datatracker.ietf.org/doc/html/rfc2813[2813] and https://datatracker.ietf.org/doc/html/rfc7194[7194].
* *Small, fast, and very light*: the core is and should stay as light and fast as possible.
* *Customizable and extensible*: there are a lot of options to customize WeeChat, and it is extensible with C plugins and https://weechat.org/scripts/[scripts] (https://weechat.org/scripts/language/perl/[Perl], https://weechat.org/scripts/language/python/[Python], https://weechat.org/scripts/language/ruby[Ruby], https://weechat.org/scripts/language/lua/[Lua], https://weechat.org/scripts/language/tcl/[Tcl], https://weechat.org/scripts/language/guile/[Scheme], https://weechat.org/scripts/language/javascript/[JavaScript] and https://weechat.org/scripts/language/php/[PHP]).
* *Fully documented*: there is comprehensive https://weechat.org/doc/weechat/[documentation], which is https://weechat.org/doc/weechat/dev/#translations[translated] into several languages.
* *Developed from scratch*: WeeChat was built from scratch and is not based on any other client.
* *Free software*: WeeChat is released under https://www.gnu.org/licenses/gpl-3.0.html[GPLv3].
- **Modular chat client**: WeeChat has a lightweight core and optional [plugins](https://weechat.org/doc/weechat/user/#plugins). All plugins (including [IRC](https://weechat.org/doc/weechat/user/#irc)) are independent and can be unloaded.
- **Multi-platform**: WeeChat runs on GNU/Linux, *BSD, GNU/Hurd, Haiku, macOS and Windows (Bash/Ubuntu and Cygwin).
- **Multi-protocols**: WeeChat is designed to support multiple protocols by plugins, like IRC.
- **Standards-compliant**: the IRC plugin is compliant with RFCs [1459](https://datatracker.ietf.org/doc/html/rfc1459), [2810](https://datatracker.ietf.org/doc/html/rfc2810), [2811](https://datatracker.ietf.org/doc/html/rfc2811), [2812](https://datatracker.ietf.org/doc/html/rfc2812), [2813](https://datatracker.ietf.org/doc/html/rfc2813) and [7194](https://datatracker.ietf.org/doc/html/rfc7194).
- **Small, fast, and very light**: the core is and should stay as light and fast as possible.
- **Customizable and extensible**: there are a lot of options to customize WeeChat, and it is extensible with C plugins and [scripts](https://weechat.org/scripts/) ([Perl](https://weechat.org/scripts/language/perl/), [Python](https://weechat.org/scripts/language/python/), [Ruby](https://weechat.org/scripts/language/ruby), [Lua](https://weechat.org/scripts/language/lua/), [Tcl](https://weechat.org/scripts/language/tcl/), [Scheme](https://weechat.org/scripts/language/guile/), [JavaScript](https://weechat.org/scripts/language/javascript/) and [PHP](https://weechat.org/scripts/language/php/)).
- **Fully documented**: there is comprehensive [documentation](https://weechat.org/doc/weechat/), which is [translated](https://weechat.org/doc/weechat/dev/#translations) into several languages.
- **Developed from scratch**: WeeChat was built from scratch and is not based on any other client.
- **Free software**: WeeChat is released under [GPLv3](https://www.gnu.org/licenses/gpl-3.0.html).
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Blocking a user prevents them from interacting with repositories, such as opening or commenting on pull requests or issues. Learn more about blocking a user.
Sébastien Helleu