Minor refactor & reformatting across the board

core/autoload/text.el

@@ -260,15 +260,9 @@ opposite indentation style."
 
 Respects `require-final-newline'."
   (interactive)
-  (goto-char (point-max))
-  (skip-chars-backward " \t\n\v")
-  (when (looking-at "\n\\(\n\\|\\'\\)")
-    (forward-char 1))
-  (when require-final-newline
-    (unless (bolp)
-      (insert "\n")))
-  (when (looking-at "\n+")
-    (replace-match "")))
+  (save-excursion
+    (goto-char (point-max))
+    (delete-blank-lines)))
 
 ;;;###autoload
 (defun doom/dos2unix ()