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VIM License 6.2 [2009] PubRL 58 (1 January 2009)

VIM License

Version: 6.2

Copyright: No

URL: http://www.vim.org/htmldoc/uganda.html

Type: Software

Media: Software

Country: International

Licence text

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 maintainer is Bram Moolenaar <Bram@vim.org>. 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.

Note:

- If you are happy with Vim, please express that by reading the rest of this

file and consider helping needy children in Uganda.

- If you want to support further Vim development consider becoming a

|sponsor|.

- According to Richard Stallman the Vim license is GNU GPL compatible.

A few minor changes have been made since he checked it, but that should not

make a difference.

- If you link Vim with a library that goes under the GNU GPL, this limits

further distribution to the GNU GPL. Also when you didn't actually change

anything in Vim.

- Once a change is included that goes under the GNU GPL, this forces all

further changes to also be made under the GNU GPL or a compatible license.

- If you distribute a modified version of Vim, you can include your name and

contact information with the "--with-modified-by" configure argument or the

MODIFIED_BY define.