Add Emacs Lisp track

emacs-lisp/hello-world/.exercism/config.json

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+{
+  "authors": [
+    "canweriotnow"
+  ],
+  "contributors": [
+    "benreyn",
+    "konrad",
+    "kytrinyx",
+    "vermiculus"
+  ],
+  "files": {
+    "solution": [
+      "hello-world.el"
+    ],
+    "test": [
+      "hello-world-test.el"
+    ],
+    "example": [
+      ".meta/example.el"
+    ]
+  },
+  "blurb": "The classical introductory exercise. Just say \"Hello, World!\".",
+  "source": "This is an exercise to introduce users to using Exercism",
+  "source_url": "https://en.wikipedia.org/wiki/%22Hello,_world!%22_program"
+}

emacs-lisp/hello-world/.exercism/metadata.json

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+{"track":"emacs-lisp","exercise":"hello-world","id":"cc423d14697547f3bb31a57ef9da699d","url":"https://exercism.org/tracks/emacs-lisp/exercises/hello-world","handle":"Nebucatnetzer","is_requester":true,"auto_approve":false}

emacs-lisp/hello-world/HELP.md

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+# Help
+
+## Running the tests
+
+Tests can be run several ways.
+
+## Interactively from within Emacs
+
+1. Open test file, `M-x eval-buffer RET`
+2. Interactively and individually, with `M-x ert RET test-name RET`
+3. Interactively and all at once, with `M-x ert RET t RET`
+   Note that this will run all tests currently loaded into Emacs!
+4. Rerun `M-x eval-buffer RET` before testing whenever you've made changes
+
+To only execute the tests in the current buffer you can add this to your `.emacs` or `init.el`:
+
+```elisp
+(defun my-eval-and-run-all-tests-in-buffer ()
+  "Deletes all loaded tests from the runtime, evaluates the current buffer and runs all loaded tests with ert."
+  (interactive)
+  (ert-delete-all-tests)
+  (eval-buffer)
+  (ert 't))
+```
+
+After restarting Emacs:
+
+1. Open test file
+2. `M-x my-eval-and-run-all-tests-in-buffer RET`
+
+## From the terminal
+
+To run run all tests from the terminal, in batch mode, execute `emacs -batch -l ert -l *-test.el -f ert-run-tests-batch-and-exit`
+
+The above command is a bit unwieldy, so if you like:
+
+1. Create a file on your `$PATH` (probably in `~/bin`) called `ert-run`
+2. The contents of the file should be as follows:
+   ```sh
+   #!/usr/bin/env sh
+   emacs -batch -l ert -l $1 -f ert-run-tests-batch-and-exit
+   ```
+3. Make the file executable with `chmod +x ert-run`
+
+You should be able to simply call `ert-run *-test.el` and run the tests
+in batch mode.
+
+## Other options
+
+Other options can be found in the docs, `C-h i m ert RET`.
+
+## Submitting your solution
+
+You can submit your solution using the `exercism submit hello-world.el` command.
+This command will upload your solution to the Exercism website and print the solution page's URL.
+
+It's possible to submit an incomplete solution which allows you to:
+
+- See how others have completed the exercise
+- Request help from a mentor
+
+## Need to get help?
+
+If you'd like help solving the exercise, check the following pages:
+
+- The [Emacs Lisp track's documentation](https://exercism.org/docs/tracks/emacs-lisp)
+- [Exercism's programming category on the forum](https://forum.exercism.org/c/programming/5)
+- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
+
+Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
+
+To get help if you're having trouble, you can use one of the following resources:
+
+- [The Emacs Wiki](http://emacswiki.org/) is invaluable. Spend lots of time here.
+- [The Emacs Editor](http://www.gnu.org/software/emacs/manual/html_node/emacs/index.html) is the official manual for GNU Emacs.
+- IRC - there are [Libera.Chat](https://libera.chat/) channels for `#emacs`, `#org-mode`, and many Emacs
+  packages, and many helpful folks around. And with emacs, IRC is as close as
+  `M-x erc`.
+- Matrix - on [Matrix](https://matrix.org/) there are rooms for [emacs](https://matrix.to/#/#emacs:matrix.org), [org-mode](https://matrix.to/#/#org-mode:matrix.org), and other Emacs packages.
+  You can [join the Emacs Matrix space](https://matrix.to/#/#emacs-space:matrix.org) to get an overview of the available channels.
+  To join Matrix from within Emacs you can use the [Ement.el](https://github.com/alphapapa/ement.el) package.
+- [StackOverflow](http://stackoverflow.com/questions/tagged/elisp) and [Emacs StackExchange](https://emacs.stackexchange.com/questions/tagged/elisp) can be used to search for your problem and see if it has been answered already. You can also ask and answer questions.

emacs-lisp/hello-world/README.md

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+# Hello World
+
+Welcome to Hello World on Exercism's Emacs Lisp Track.
+If you need help running the tests or submitting your code, check out `HELP.md`.
+
+## Instructions
+
+The classical introductory exercise.
+Just say "Hello, World!".
+
+["Hello, World!"][hello-world] is the traditional first program for beginning programming in a new language or environment.
+
+The objectives are simple:
+
+- Modify the provided code so that it produces the string "Hello, World!".
+- Run the test suite and make sure that it succeeds.
+- Submit your solution and check it at the website.
+
+If everything goes well, you will be ready to fetch your first real exercise.
+
+[hello-world]: https://en.wikipedia.org/wiki/%22Hello,_world!%22_program
+
+## Source
+
+### Created by
+
+- @canweriotnow
+
+### Contributed to by
+
+- @benreyn
+- @konrad
+- @kytrinyx
+- @vermiculus
+
+### Based on
+
+This is an exercise to introduce users to using Exercism - https://en.wikipedia.org/wiki/%22Hello,_world!%22_program

emacs-lisp/hello-world/hello-world-test.el

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+;;; hello-world-test.el --- Tests for Hello World (exercism)  -*- lexical-binding: t; -*-
+
+;;; Commentary:
+;; Common test data version: 1.1.0 be3ae66
+
+;;; Code:
+
+(load-file "hello-world.el")
+(declare-function hello "hello-world.el")
+
+(ert-deftest hello-world-test ()
+  (should (string= (hello) "Hello, World!")))
+
+(provide 'hello-world-test)
+
+;;; hello-world-test.el ends here

emacs-lisp/hello-world/hello-world.el

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+;;; hello-world.el --- Hello World exercise (exercism)  -*- lexical-binding: t; -*-
+
+;;; Commentary:
+
+(defun hello ()
+  "Goodbye, Mars!")
+
+(provide 'hello-world)
+;;; hello-world.el ends here