Fix saving multiple themes

* lisp/custom.el (enable-theme): Be side-effect free when modifying
custom-enabled-themes.  (Bug#19999)

diff --git a/lisp/custom.el b/lisp/custom.el
index 037f6c5b1d5478bb01dbdf3d1a6747065a5d5c8f..885c486c5e43df18fb66da63762fa9e6ef2e7d1b 100644 (file)
--- a/lisp/custom.el
+++ b/lisp/custom.el
@@ -1381,7 +1381,7 @@ function runs.  To disable other themes, use `disable-theme'."
            (custom-theme-recalc-variable symbol)))))))
   (unless (eq theme 'user)
     (setq custom-enabled-themes
-         (cons theme (delq theme custom-enabled-themes)))
+         (cons theme (remq theme custom-enabled-themes)))
     ;; Give the `user' theme the highest priority.
     (enable-theme 'user)))