Some minor changes in yank-pop

core/prelude-editor.el

@@ -350,9 +350,9 @@ indent yanked text (with prefix arg don't indent)."
     (yank-advised-indent-function (region-beginning) (region-end)))))
 
 (defadvice yank-pop (after yank-pop-indent activate)
-  "If current mode is one of 'yank-indent-modes,
+  "If current mode is one of `yank-indent-modes',
 indent yanked text (with prefix arg don't indent)."
-  (if (and (not (ad-get-arg 0))
+  (when (and (not (ad-get-arg 0))
              (not (member major-mode yank-indent-blacklisted-modes))
              (or (derived-mode-p 'prog-mode)
                  (member major-mode yank-indent-modes)))