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;;; oni-elisp.el --- Emacs Lisp configuration -*- lexical-binding: t; -*-
;; Copyright (C) 2019 Tom Willemse
;; Author: Tom Willemse <tom@ryuslash.org>
;; Keywords: local
;; Version: 2026.0527.003032
;; Package-Requires: (oni-company oni-flycheck oni-paredit oni-hydra rainbow-delimiters nameless erefactor flycheck-relint elisp-format)
;; 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 working in Emacs Lisp.
;;; Code:
(require 'checkdoc)
(require 'flycheck-relint)
(require 'hydra)
(let ((byte-compile-not-obsolete-funcs '(preceding-sexp)))
(require 'erefactor))
(require 'ielm)
(defconst oni-elisp-root
(file-name-directory
(or load-file-name
(buffer-file-name)))
"The directory where ‘oni-elisp’ was loaded from.")
(font-lock-add-keywords
'emacs-lisp-mode
`((,(rx symbol-start
(group (or "t"
"nil"
(and (optional "-")
digit
(minimal-match (zero-or-more (any digit ?.))))))
symbol-end)
1 font-lock-constant-face)))
(defun oni-elisp-auto-fill-mode ()
"Enable ‘auto-fill-mode’ only for comments and inhibit for Package-Requires."
(setq-local comment-auto-fill-only-comments t)
(setq-local auto-fill-inhibit-regexp (rx line-start ";; Package-Requires: "))
(auto-fill-mode))
(defun oni-elisp-setup-ielm-mode-line ()
"Clean up the mode-line for ielm buffers."
(setq mode-line-buffer-identification
(list (propertize "Interactive Emacs Lisp Mode" 'face 'mode-line-buffer-id))
mode-line-format
'("%e"
mode-line-front-space
mode-line-remote
mode-line-frame-identification
mode-line-buffer-identification
" on "
(:eval (buffer-name ielm-working-buffer))
mode-line-end-spaces)))
(defun oni-elisp-ielm-remove-paredit-newline-keys ()
"Disable ‘C-j’ and ‘RET’ keybindings from ‘paredit-mode’."
(let ((oldmap (map-elt minor-mode-map-alist 'paredit-mode))
(newmap (make-sparse-keymap)))
(set-keymap-parent newmap oldmap)
(define-key newmap (kbd "RET") nil)
(define-key newmap (kbd "C-j") nil)
(make-local-variable 'minor-mode-overriding-map-alist)
(push `(paredit-mode . ,newmap) minor-mode-overriding-map-alist)))
(defhydra oni-elisp-hydra (:color teal :hint nil)
"
^Eval^
^^----------
_eb_: Buffer
"
("eb" eval-buffer))
(add-hook 'emacs-lisp-mode-hook #'oni-elisp-auto-fill-mode)
(add-hook 'emacs-lisp-mode-hook 'company-mode)
(add-hook 'emacs-lisp-mode-hook 'display-fill-column-indicator-mode)
(add-hook 'emacs-lisp-mode-hook 'electric-quote-local-mode)
(add-hook 'emacs-lisp-mode-hook 'erefactor-lazy-highlight-turn-on)
(add-hook 'emacs-lisp-mode-hook 'flycheck-mode)
(add-hook 'emacs-lisp-mode-hook 'nameless-mode)
(add-hook 'emacs-lisp-mode-hook 'paredit-mode)
(add-hook 'emacs-lisp-mode-hook 'rainbow-delimiters-mode)
(add-hook 'ielm-mode-hook #'oni-elisp-ielm-remove-paredit-newline-keys)
(add-hook 'ielm-mode-hook #'oni-elisp-setup-ielm-mode-line)
(add-hook 'ielm-mode-hook 'company-mode)
(add-hook 'ielm-mode-hook 'paredit-mode)
(setq ielm-prompt "λ> ")
(define-key emacs-lisp-mode-map (kbd "C-c r") erefactor-map)
(define-key emacs-lisp-mode-map (kbd "C-c SPC") 'oni-elisp-hydra/body)
;;;###autoload
(add-to-list 'auto-mode-alist '("/Cask\\'" . emacs-lisp-mode))
(add-to-list 'display-buffer-alist
'("\\`\\*ielm\\*\\'" display-buffer-in-side-window
(side . bottom)
(slot . 0)
(window-height . 0.33)))
(flycheck-relint-setup)
(add-hook 'emacs-lisp-mode-hook 'checkdoc-minor-mode)
(setq checkdoc-spellcheck-documentation-flag t)
(provide 'oni-elisp)
;;; oni-elisp.el ends here
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