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+;;; prog-lisp --- Lisp Specific Settings and Functionality -*- lexical-binding: t; coding: utf-8; -*-
+;; author Craig Jennings <c@cjennings.net>
+
+;;; Commentary:
+
+;; ==== Setting up Quicklisp ====
+;; Quicklisp is a library manager for Common Lisp. It works with your existing Common Lisp
+;; implementation to download, install, and load any of over 1,500 libraries with a few
+;; simple commands.
+;; https://www.quicklisp.org/beta/
+
+;; mostly from: https://gist.github.com/jteneycke/7947353
+;; * Install SBCL
+;; sudo pacman -S sbcl       # arch
+;; doas pkg install sbcl     # bsd
+;; sudo apt-get install sbcl # debian
+
+;; * Install QuickLisp
+;; curl -O http://beta.quicklisp.org/quicklisp.lisp
+;; sbcl --load quicklisp.lisp --eval "(quicklisp-quickstart:install)" --quit
+;; sbcl --load ~/quicklisp/setup.lisp --eval "(ql:add-to-init-file)" --quit
+
+;; * Emacs Config
+;; (load (expand-file-name "~/quicklisp/slime-helper.el"))
+;; ;; Replace "sbcl" with the path to your implementation
+;; (setq inferior-lisp-program "/usr/bin/sbcl")
+
+;; to get readline support in SBCL's REPL, install rlwrap and run it
+;; before sbcl like so:
+
+;; $ rlwrap sbcl
+
+;;; Code:
+(require 'ert)
+
+;; -------------------------------- Elisp Setup --------------------------------
+;; run this on editing an elisp file
+
+(defun cj/elisp-setup ()
+  "My default code preferences for emacs-lisp."
+  (setq-default tab-width 4)            ;; set the tab width to 4 spaces
+  (setq-default indent-tabs-mode -1)    ;; disable tab characters
+  (setq-default fill-column 120)        ;; wrap code at this column
+  (display-fill-column-indicator-mode)) ;; show where the fill-column is
+(add-hook 'emacs-lisp-mode-hook 'cj/elisp-setup)
+
+;; ------------------------------ Emacs Lisp REPL ------------------------------
+
+(use-package ielm
+  :ensure nil ;; built-in
+  :hook (ielm-mode . eldoc-mode)
+  :config (setq ielm-prompt "elisp> "))
+
+;; ----------------------------------- Eldoc -----------------------------------
+
+(use-package eldoc
+  :ensure nil ;; built-in
+  :hook ((c-mode-common emacs-lisp-mode) . eldoc-mode)
+  :custom
+  (eldoc-echo-area-use-multiline-p 3)
+  (eldoc-echo-area-display-truncation-message nil))
+
+;; -------------------------- ERT + Testing Libraries --------------------------
+;; unit/regression testing framework
+;; basic introduction: https://nullprogram.com/blog/2012/08/15/
+;; https://www.gnu.org/software/emacs/manual/html_node/ert/
+;; or: [[info:ert#User Input]]
+
+(use-package ert
+  :ensure nil ;; built-into emacs
+  :defer 1)
+
+;; ---------------------------------- El-Mock ----------------------------------
+
+(use-package el-mock
+  :defer 1) ;; mock/stub framework
+
+;; --------------------------------- Elisp Lint --------------------------------
+
+(use-package elisp-lint
+  :defer 1)
+
+;; ------------------------------ Package Tooling ------------------------------
+
+(use-package package-lint
+  :defer 1)
+
+(use-package flycheck-package
+  :defer 1
+  :after (flycheck package-lint)
+  :config
+  (flycheck-package-setup))
+
+(use-package package-build
+  :defer 1)
+
+;; ----------------------------- Rainbow Delimiters ----------------------------
+
+(use-package rainbow-delimiters
+  :defer .5
+  :hook
+  (emacs-lisp-mode . rainbow-delimiters-mode)
+  (lisp-mode . rainbow-delimiters-mode)
+  :config
+  (set-face-foreground 'rainbow-delimiters-depth-1-face "#c66")     ;; red
+  (set-face-foreground 'rainbow-delimiters-depth-2-face "#6c6")     ;; green
+  (set-face-foreground 'rainbow-delimiters-depth-3-face "#69f")     ;; blue
+  (set-face-foreground 'rainbow-delimiters-depth-4-face "#cc6")     ;; yellow
+  (set-face-foreground 'rainbow-delimiters-depth-5-face "#6cc")     ;; cyan
+  (set-face-foreground 'rainbow-delimiters-depth-6-face "#c6c")     ;; magenta
+  (set-face-foreground 'rainbow-delimiters-depth-7-face "#ccc")     ;; light gray
+  (set-face-foreground 'rainbow-delimiters-depth-8-face "#999")     ;; medium gray
+  (set-face-foreground 'rainbow-delimiters-depth-9-face "#666"))    ;; dark gray
+
+;; -------------------------------- Geiser Guile -------------------------------
+;; Guile support in Emacs
+
+(use-package geiser-guile
+  :defer 1
+  :commands (geiser-guile)
+  :bind ("C-c G" . geiser-guile)
+  :config
+  (setq geiser-guile-binary "/usr/bin/guile"))
+
+(provide 'prog-lisp)
+;;; prog-lisp.el ends here