doomemacs/modules/lang/emacs-lisp/config.el

;;; lang/emacs-lisp/config.el
(provide '+emacs-lisp)

(@use-package elisp-mode
  :mode ("/Cask$" . emacs-lisp-mode)
  :init
  (@add-hook emacs-lisp-mode '(highlight-quoted-mode auto-compile-on-save-mode +emacs-lisp|hook))

  :config
  (@map :map emacs-lisp-mode-map
        :m "gd" '+emacs-lisp/find-function
        :leader :m "gd" '+emacs-lisp/find-function-other-window)

  ;; Don't affect lisp indentation (only `tab-width')
  (setq editorconfig-indentation-alist
        (delq (assq 'emacs-lisp-mode editorconfig-indentation-alist)
              editorconfig-indentation-alist))

  (defun +emacs-lisp|hook ()
    (setq mode-name "Elisp") ; [pedantry intensifies]
    (add-hook 'before-save-hook 'delete-trailing-whitespace nil t)

    (font-lock-add-keywords
     nil `(;; Display "lambda" as λ
           ("(\\(lambda\\)" (1 (ignore (compose-region (match-beginning 1) (match-end 1) ?λ 'decompose-region))))
           ;; Highlight doom/module functions
           ("\\(^\\|\\s-\\)(\\(\\(doom\\|\\+\\)[^) ]+\\)[) \n]" (2 font-lock-builtin-face))
           ;; Highlight doom macros (no need, macros are fontified in emacs 25+)
           ;; ("\\(^\\|\\s-\\)(\\(@[^) ]+\\)[) \n]" (2 font-lock-preprocessor-face append))
           ))

    (setq imenu-generic-expression
          '(("Evil Commands" "^\\s-*(evil-define-\\(?:command\\|operator\\|motion\\) +\\(\\_<[^ ()\n]+\\_>\\)" 1)
            ("Package" "^\\s-*(@\\(?:use-package\\|package\\) +\\(\\_<[^ ()\n]+\\_>\\)" 1)
            ("Settings" "^\\s-*(@def-setting +\\([^ ()\n]+\\)" 1)
            ("Modelines" "^\\s-*(@def-modeline +\\([^ ()\n]+\\)" 1)
            ("Modeline Segments" "^\\s-*(@def-modeline-segment +\\([^ ()\n]+\\)" 1)
            ("Advice" "^\\s-*(def\\(?:\\(?:ine-\\)?advice\\))")
            ("Modes" "^\\s-*(define-\\(?:global\\(?:ized\\)?-minor\\|generic\\|minor\\)-mode +\\([^ ()\n]+\\)" 1)
            ("Macros" "^\\s-*(\\(?:cl-\\)?def\\(?:ine-compile-macro\\|macro\\) +\\([^ )\n]+\\)" 1)
            ("Inline Functions" "\\s-*(\\(?:cl-\\)?defsubst +\\([^ )\n]+\\)" 1)
            ("Functions" "^\\-s*(\\(?:cl-\\)?def\\(?:un\\*?\\|method\\|generic\\) +\\([^ )\n]+\\)" 1)
            ("Variables" "^\\s-*(\\(def\\(?:c\\(?:onst\\(?:ant\\)?\\|ustom\\)\\|ine-symbol-macro\\|parameter\\)\\)\\s-+\\(\\(?:\\sw\\|\\s_\\|\\\\.\\)+\\)" 2)
            ("Variables" "^\\s-*(defvar\\(?:-local\\)?\\s-+\\(\\(?:\\sw\\|\\s_\\|\\\\.\\)+\\)[[:space:]\n]+[^)]" 1)
            ("Types" "^\\s-*(\\(cl-def\\(?:struct\\|type\\)\\|def\\(?:class\\|face\\|group\\|ine-\\(?:condition\\|error\\|widget\\)\\|package\\|struct\\|t\\(?:\\(?:hem\\|yp\\)e\\)\\)\\)\\s-+'?\\(\\(?:\\sw\\|\\s_\\|\\\\.\\)+\\)" 2)
            ))))


(@after debug ;; elisp debugging
  (@map :map debugger-mode-map
        :n "RET" 'debug-help-follow
        :n "n"   'debugger-step-through
        :n "c"   'debugger-continue))


;;
;; Plugins
;;

(@use-package auto-compile
  :commands auto-compile-on-save-mode
  :config
  (setq auto-compile-display-buffer nil
        auto-compile-use-mode-line nil))


(@use-package highlight-quoted
  :commands highlight-quoted-mode)


(@use-package slime
  :config (setq inferior-lisp-program "clisp"))