--- a/shell/ash.c	2014-01-19 16:10:06.228270755 -0800
+++ b/shell/ash.c	2014-01-19 16:12:46.388266769 -0800
@@ -1151,7 +1151,9 @@
 	if (e == ENOENT || e == ENOTDIR) {
 		return em;
 	}
-	return strerror(e);
+	if (errstr()[0] == 0)
+		return strerror(e);
+	return errstr();
 }