Add Racket module (#1321)

doc/index.md

@@ -76,6 +76,7 @@ The following programming languages have enhanced support in Prelude:
 - Org Mode
 - Perl
 - [Python](modules/python.md)
+- Racket
 - [Ruby](modules/ruby.md)
 - Rust
 - Scala

modules/prelude-racket.el

@@ -0,0 +1,52 @@
+;;; prelude-racket.el --- Emacs Prelude: Racket programming support.
+;;
+;; Copyright © 2011-2021 Bozhidar Batsov
+;;
+;; Author: Xiongfei Shi <xiongfei.shi@icloud.com>
+;; URL: https://github.com/bbatsov/prelude
+
+;; This file is not part of GNU Emacs.
+
+;;; Commentary:
+
+;; Basic configuration for Racket programming.
+
+;;; License:
+
+;; This program is free software; you can redistribute it and/or
+;; modify it under the terms of the GNU General Public License
+;; as published by the Free Software Foundation; either version 3
+;; of the License, or (at your option) any later version.
+;;
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
+
+;;; Code:
+
+(prelude-require-packages '(racket-mode))
+(require 'prelude-lisp)
+
+(with-eval-after-load 'racket-mode
+  (define-key racket-mode-map (kbd "M-RET") 'racket-run)
+  (define-key racket-mode-map (kbd "M-.") 'racket-repl-visit-definition))
+
+(add-hook 'racket-mode-hook #'racket-unicode-input-method-enable)
+(add-hook 'racket-repl-mode-hook #'racket-unicode-input-method-enable)
+
+(add-hook 'racket-mode-hook (lambda () (run-hooks 'prelude-lisp-coding-hook)))
+(add-hook 'racket-mode-hook (lambda () (setq-local whitespace-line-column 102)))
+
+(add-to-list 'auto-mode-alist '("\\.rkt$" . racket-mode))
+(add-to-list 'auto-mode-alist '("\\.rkt?\\'" . racket-mode))
+(add-to-list 'auto-mode-alist '("\\.rkt\\'" . racket-mode))
+
+(provide 'prelude-racket)
+
+;;; prelude-racket ends here

sample/prelude-modules.el

@@ -83,6 +83,7 @@
 ;; (require 'prelude-ocaml)
 (require 'prelude-perl)
 ;; (require 'prelude-python)
+;; (require 'prelude-racket)
 ;; (require 'prelude-ruby)
 ;; (require 'prelude-rust)
 ;; (require 'prelude-scala)