Define `acdw/reindent-buffer' and hook into elisp

Hopefully this will put a halt to all of my whitespace commits.  Of course, this
commit also includes whitespace-only diffs.

init.el

@@ -733,7 +733,8 @@ if ripgrep is installed, otherwise `consult-grep'."
 (setup emacs-lisp-mode
   (:option eval-expression-print-length nil
            eval-expression-print-level nil
-           lisp-indent-function #'lisp-indent-function))
+           lisp-indent-function #'lisp-indent-function)
+  (:local-hook before-save-hook acdw/reindent-buffer))
 
 (setup  (:straight macrostep)
   (define-key emacs-lisp-mode-map (kbd "C-c e") #'macrostep-expand))

lisp/acdw.el

@@ -58,6 +58,13 @@ Ready for use with `after-focus-change-function'."
     (run-at-time sunset-time (* 60 60 24) sunset-command)
     (run-at-time "12:00am" (* 60 60 24) sunset-command)))
 
+;;;; Re-indent a buffer
+(defun acdw/reindent-buffer ()
+  "Call `indent-region' on the whole buffer."
+  (interactive)
+  (save-excursion
+    (indent-region (point-min) (point-max))))
+
 ;;; Garbage collection hacks
 
 (defconst acdw/gc-cons-threshold-basis (* 800 1024)