Add extract_sigle method to archive

Change-Id: Ic2eb6578c6e8fb57e2191f685a000fd712ec463d
diff --git a/t/script/extract.t b/t/script/extract.t
index e9f666f..11d7cf3 100644
--- a/t/script/extract.t
+++ b/t/script/extract.t
@@ -167,7 +167,7 @@
   sub {
     system($call);
   },
-  qr!Extract .+? REI/BN\*!s,
+  qr!Extract .+? REI/BN!s,
   $call
 );