[elpa] externals/ztree 878375adf6: Updated readme

[ELPA Syncer]

branch: externals/ztree
commit 878375adf66a7993cfbc42f831acf92eee2b705b
Author: Alexey Veretennikov <fourier@protonmail.ch>
Commit: Alexey Veretennikov <fourier@protonmail.ch>

    Updated readme
---
 README.md | 122 ++++----------------------------------------------------------
 1 file changed, 6 insertions(+), 116 deletions(-)

diff --git a/README.md b/README.md
index 1a2274f8a0..8e4ea16fc0 100644
--- a/README.md
+++ b/README.md
@@ -1,121 +1,11 @@
-# ztree
-Ztree is a project dedicated to implementation of several text-tree 
applications inside [GNU Emacs](http://www.gnu.org/software/emacs/). It 
consists of 2 subprojects: **ztree-diff** and **ztree-dir** (the basis of 
**ztree-diff**). Available in [GNU ELPA](https://elpa.gnu.org/) and 
[MELPA](http://melpa.org/#/).
+# Give Up GitHub
 
-## Installation
+This project has given up GitHub.  ([See Software Freedom Conservancy's *Give 
Up  GitHub* site for details](https://GiveUpGitHub.org).)
 
-### Using ELPA
-Press `M-x` in GNU Emacs and write `list-packages`. Find the `ztree` in the 
list of packages and press `i` to select this package, `x` to install the 
package.
+You can now find this project at 
[https://codeberg.org/fourier/ztree](https://codeberg.org/fourier/ztree) 
instead.
 
-### Using MELPA
-Add to your `.emacs` or `.emacs.d/init.el` following lines:
+Any use of this project's code by GitHub Copilot, past or present, is done 
without our permission.  We do not consent to GitHub's use of this project's 
code in Copilot.
 
-```scheme
-(setq package-archives '(("gnu" . "http://elpa.gnu.org/packages/";)
-                         ("melpa" . "http://melpa.milkbox.net/packages/";)))
-```
-                         
-Follow the installation instructions for the GNU ELPA above.
-
-### Manual
-Add the following to your .emacs file:
-
-```scheme
-(push (substitute-in-file-name "path-to-ztree-directory") load-path)
-(require 'ztree)
-```
-
-## ztree-diff
-**ztree-diff** is a directory-diff tool for Emacs inspired by commercial tools 
like Beyond Compare or Araxis Merge. It supports showing the difference between 
two directories; calling **Ediff** for not matching files, copying between 
directories, deleting file/directories, hiding/showing equal files/directories.
-
-The comparison itself performed with the external **GNU diff** tool, so make 
sure to have one in the executable path. Verified on OSX and Linux.
-
-If one wants to have a stand-alone application, consider the 
(WIP)[zdircmp](https://github.com/fourier/zdircmp) project based on 
**ztree-diff**.
-
-Call the `ztree-diff` interactive function:
-
-```
-M-x ztree-diff
-```
-Then you need to specify the left and right directories to compare.
-
-### Hotkeys supported
- * Open/close directories with double-click, `RET` or `Space` keys.
- * To jump to the parent directory, hit the `Backspace` key.
- * To toggle open/closed state of the subtree of the current directory, hit 
the `x` key.
- * `RET` on different files starts the **Ediff** (or open file if one absent 
or the same)
- * `Space` show the simple diff window for the current file instead of 
**Ediff** (or view file if one absent or the same)
- * `TAB` to fast switch between panels
- * `h` key to toggle show/hide identical files/directories
- * `H` key to toggle show/hide hidden/ignored files/directories
- * `C` key to copy current file or directory to the left or right panel
- * `D` key to delete current file or directory
- * `v` key to quick view the current file
- * `r` initiates the rescan/refresh of current file or subdirectory
- * `F5` forces the full rescan.
-
-### Customizations
-By default all files starting with dot (like `.gitignore`) are not shown and 
excluded from the difference status for directories. One can add an additional 
regexps to the list `ztree-diff-filter-list`.
-
-One also could turn on unicode characters to draw the tree with instead of 
normal ASCII-characters. This is controlled by the `ztree-draw-unicode-lines` 
variable.
-
-The variable `ztree-diff-consider-file-permissions` (which is `nil` by 
default) if set to `t` allows to compare file attributes as well, the files 
will be considered different if they have different mode.
-
-The special variable `ztree-diff-additional-options`
-introduced to provide an additional arguments
-to the 'diff' tool.
-For example one could specify
-```
-(setq ztree-diff-additional-options '("-w" "-i"))
-```
-to ignore case differences and whitespace differences.
-
-
-### Screenshots
-
-![ztreediff 
emacsx11](https://github.com/fourier/ztree/raw/screenshots/screenshots/emacs_diff_xterm.png
 "Emacs in xterm with ztree-diff")
-
-![ztreediff-diff 
emacsx11](https://github.com/fourier/ztree/raw/screenshots/screenshots/emacs_diff_simplediff_xterm.png
 "Emacs in xterm with ztree-diff and simple diff")
-
-## ztree-dir
-
-**ztree-dir** is a simple text-mode directory tree for Emacs. See screenshots 
below for the GUI and the terminal versions of the **ztree-dir**.
-
-Call the `ztree-dir` interactive function:
-
-```
-M-x ztree-dir
-```
-
-### Hotkeys supported
-* Open/close directories with double-click, `RET` or `Space` keys.
-* To jump to the parent directory, hit the `Backspace` key.
-* To toggle open/closed state of the subtree of the current directory, hit the 
`x` key.
-* To visit a file, press `Space` key.
-* To open file in other window, use `RET` key.
-* To open `Dired` with the directory the point is currently on, use the `d` 
key.
-
-### Customizations
-Set the `ztree-dir-move-focus` variable to `t` in order to move focus to the 
other window when the `RET` key is pressed; the default behavior is to keep 
focus in `ztree-dir` window.
-
-
-![ztree 
emacsapp](https://github.com/fourier/ztree/raw/screenshots/screenshots/emacs_app.png
 "Emacs App with ztree-dir")
-
-![ztree 
emacsx11](https://github.com/fourier/ztree/raw/screenshots/screenshots/emacs_xterm.png
 "Emacs in xterm with ztree-dir")
-
-
-## Contributions
-You can contribute to **ztree** in one of the following ways.
-- Submit a bug report
-- Submit a feature request
-- Submit a simple pull request (with changes < 15 lines)
-
-### Copyright issues
-Since **ztree** is a part of [GNU ELPA](https://elpa.gnu.org/), it is 
copyrighted by the [Free Software Foundation, Inc.](http://www.fsf.org/). 
Therefore in order to submit nontrivial changes (with total amount of lines > 
15), one needs to to grant the right to include your works in GNU Emacs to the 
FSF.
-
-For this you need to complete 
[this](https://raw.githubusercontent.com/fourier/ztree/contributions/request-assign.txt)
 form, and send it to [assign@gnu.org](mailto:assign@gnu.org). The FSF will 
send you the assignment contract that both you and the FSF will sign.
-
-For more information one can read 
[here](http://www.gnu.org/licenses/why-assign.html) to understand why it is 
needed.
-
-As soon as the paperwork is done one can contribute to **ztree** with bigger 
pull requests.
-Note what pull requests without paperwork done will not be accepted, so please 
notify the [maintainer](mailto:alexey.veretennikov@gmail.com) if everything is 
in place.
+Join us; you can [give up GitHub](https://GiveUpGitHub.org) too!
 
+![Logo of the GiveUpGitHub 
campaign](https://sfconservancy.org/img/GiveUpGitHub.png)