Move nil-or-list-of-strings-p to a separate package

init.el

@@ -54,6 +54,7 @@
 (load "file-manip")
 (load "window-manip")
 (load "xdg-paths")
+(load "utils")
 
 ;; Define aliases
 (defalias 'yes-or-no-p 'y-or-n-p)
@@ -318,12 +319,6 @@
                                           (list sml/pre-id-separator)
                                           mode-line-rest))))
 
-(defun nil-orlist-of-strings-p (var)
-  "Return t if VAR is either nil or a list holding only strings."
-  (or (null var)
-      (not (null (delq nil
-            (mapcar (lambda (x) (and (stringp x) x)) var))))))
-
 (use-package company
   :config
   (setq company-idle-delay nil

lisp/utils.el

@@ -0,0 +1,14 @@
+;;; utils --- Summary
+
+;;; Commentary:
+
+;;; Code:
+
+(defun nil-or-list-of-strings-p (var)
+  "Return t if VAR is either nil or a list holding only strings."
+  (or (null var)
+      (not (null (delq nil
+            (mapcar (lambda (x) (and (stringp x) x)) var))))))
+
+(provide 'utils)
+;;; utils.el ends here