Emacs: Indent Lisp with spaces

.emacs.d/main.el

@@ -93,6 +93,15 @@
 (defvaralias 'standard-indent 'tab-width)
 (setq-default indent-tabs-mode t)
 
+;; Lisp should not use tabs.
+(mapcar
+ (lambda (hook)
+   (add-hook
+    hook
+    (lambda ()
+      (setq indent-tabs-mode nil))))
+ '(lisp-mode-hook emacs-lisp-mode-hook))
+
 ;; This needs to be set globally since they are defined as local variable and
 ;; Emacs does not know how to set an alias on a local variable.
 (defvaralias 'c-basic-offset 'tab-width)