| 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 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. |