neovim

LICENSE.txt (16212B)

---

Copyright Neovim contributors. All rights reserved.

Neovim is licensed under the terms of the Apache 2.0 license, except for
parts of Neovim that were contributed under the Vim license (see below).

Neovim's license follows:

====
                                Apache License
                          Version 2.0, January 2004
                       https://www.apache.org/licenses/

  TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

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====

The above license applies to all parts of Neovim except (1) parts that were
contributed under the Vim license and (2) externally maintained libraries.

The externally maintained libraries used by Neovim are:

 - Klib: a Generic Library in C. MIT/X11 license.
 - Lua: MIT license
 - LuaJIT: a Just-In-Time Compiler for Lua. Copyright Mike Pall. MIT license.
 - Luv: Apache 2.0 license
 - libmpack: MIT license
 - libtermkey: MIT license
 - libuv. Copyright Joyent, Inc. and other Node contributors. Node.js license.
 - libvterm: MIT license
 - lua-cjson: MIT license
 - lua-compat: MIT license
 - tree-sitter: MIT license
 - unibilium: LGPL v3
 - xdiff: LGPL v2

====

Any parts of Neovim that were contributed under the Vim license are licensed
under the Vim license unless the copyright holder gave permission to license
those contributions under the Apache 2.0 license.

The Vim license follows:

VIM LICENSE

I)  There are no restrictions on distributing unmodified copies of Vim except
   that they must include this license text.  You can also distribute
   unmodified parts of Vim, likewise unrestricted except that they must
   include this license text.  You are also allowed to include executables
   that you made from the unmodified Vim sources, plus your own usage
   examples and Vim scripts.

II) It is allowed to distribute a modified (or extended) version of Vim,
   including executables and/or source code, when the following four
   conditions are met:
   1) This license text must be included unmodified.
   2) The modified Vim must be distributed in one of the following five ways:
      a) If you make changes to Vim yourself, you must clearly describe in
  the distribution how to contact you.  When the maintainer asks you
  (in any way) for a copy of the modified Vim you distributed, you
  must make your changes, including source code, available to the
  maintainer without fee.  The maintainer reserves the right to
  include your changes in the official version of Vim.  What the
  maintainer will do with your changes and under what license they
  will be distributed is negotiable.  If there has been no negotiation
  then this license, or a later version, also applies to your changes.
  The current maintainers are listed here: https://github.com/orgs/vim/people.
  If this changes it will be announced in appropriate places (most likely
  vim.sf.net, www.vim.org and/or comp.editors).  When it is completely
  impossible to contact the maintainer, the obligation to send him
  your changes ceases.  Once the maintainer has confirmed that he has
  received your changes they will not have to be sent again.
      b) If you have received a modified Vim that was distributed as
  mentioned under a) you are allowed to further distribute it
  unmodified, as mentioned at I).  If you make additional changes the
  text under a) applies to those changes.
      c) Provide all the changes, including source code, with every copy of
  the modified Vim you distribute.  This may be done in the form of a
  context diff.  You can choose what license to use for new code you
  add.  The changes and their license must not restrict others from
  making their own changes to the official version of Vim.
      d) When you have a modified Vim which includes changes as mentioned
  under c), you can distribute it without the source code for the
  changes if the following three conditions are met:
  - The license that applies to the changes permits you to distribute
    the changes to the Vim maintainer without fee or restriction, and
    permits the Vim maintainer to include the changes in the official
    version of Vim without fee or restriction.
  - You keep the changes for at least three years after last
    distributing the corresponding modified Vim.  When the maintainer
    or someone who you distributed the modified Vim to asks you (in
    any way) for the changes within this period, you must make them
    available to him.
  - You clearly describe in the distribution how to contact you.  This
    contact information must remain valid for at least three years
    after last distributing the corresponding modified Vim, or as long
    as possible.
      e) When the GNU General Public License (GPL) applies to the changes,
  you can distribute the modified Vim under the GNU GPL version 2 or
  any later version.
   3) A message must be added, at least in the output of the ":version"
      command and in the intro screen, such that the user of the modified Vim
      is able to see that it was modified.  When distributing as mentioned
      under 2)e) adding the message is only required for as far as this does
      not conflict with the license used for the changes.
   4) The contact information as required under 2)a) and 2)d) must not be
      removed or changed, except that the person himself can make
      corrections.

III) If you distribute a modified version of Vim, you are encouraged to use
    the Vim license for your changes and make them available to the
    maintainer, including the source code.  The preferred way to do this is
    by e-mail or by uploading the files to a server and e-mailing the URL.
    If the number of changes is small (e.g., a modified Makefile) e-mailing a
    context diff will do.  The e-mail address to be used is
    <maintainer@vim.org>

IV)  It is not allowed to remove this license from the distribution of the Vim
    sources, parts of it or from a modified version.  You may use this
    license for previous Vim releases instead of the license that they came
    with, at your option.

====

In addition, different license conditions may apply to some runtime files
included with Vim; these will be specified in the header of each respective
file.