Add ‘clojure-mode’ and ‘cider’ configuration

oni-clojure.el

@@ -0,0 +1,74 @@
+;;; oni-clojure.el --- Clojure configuration         -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2019  Tom Willemse
+
+;; Author: Tom Willemse <tom@ryuslash.org>
+;; Keywords: local
+;; Version: 20190218165405
+;; Package-Requires: (clojure-mode cider clojure-mode-extra-font-locking paredit rainbow-delimiters)
+
+;; 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 this program.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; My configuration for Clojure and Cider.
+
+;;; Code:
+
+(require 'clojure-mode)
+(require 'clojure-mode-extra-font-locking)
+(require 'inf-lisp)
+(require 'cider)
+
+(defun oni-clojure-set-inferior-lisp ()
+  "Set `inferior-lisp-program' to use Lein."
+  (setq-local inferior-lisp-program "lein repl"))
+
+(defun oni-clojure-add-font-lock ()
+  "Add extra keywords for Clojure."
+  (font-lock-add-keywords
+   nil
+   '(("(\\(facts?\\)"
+      (1 font-lock-keyword-face))
+     ("(\\(background?\\)"
+      (1 font-lock-keyword-face)))))
+
+(defun oni-clojure-add-indent ()
+  "Customize indentation for Clojure."
+  (define-clojure-indent (fact 1))
+  (define-clojure-indent (facts 1)))
+
+(setq cider-repl-pop-to-buffer-on-connect t)
+
+(setq cider-show-error-buffer t
+      cider-auto-select-error-buffer t)
+
+(setq cider-repl-history-file
+      (concat user-emacs-directory "data/cider-history"))
+
+(setq cider-repl-wrap-history t)
+
+(add-hook 'clojure-mode-hook 'paredit-mode)
+(add-hook 'clojure-mode-hook 'rainbow-delimiters-mode)
+(add-hook 'clojure-mode-hook 'oni-clojure-set-inferior-lisp)
+(add-hook 'clojure-mode-hook 'oni-clojure-add-font-lock)
+(add-hook 'clojure-mode-hook 'oni-clojure-add-indent)
+
+(add-hook 'cider-repl-mode-hook 'paredit-mode)
+
+;;;###autoload(with-eval-after-load 'clojure-mode (require 'oni-clojure))
+;;;###autoload(with-eval-after-load 'cider (require 'oni-clojure))
+
+(provide 'oni-clojure)
+;;; oni-clojure.el ends here