diff -Nur tar-1.22.orig/src/suffix.c tar-1.22/src/suffix.c
--- tar-1.22.orig/src/suffix.c	2009-03-05 01:04:13.000000000 -0600
+++ tar-1.22/src/suffix.c	2009-05-06 15:59:10.695985191 -0500
@@ -41,6 +41,7 @@
   { S(tlz, lzma) },
   { S(lzo, lzop) },
   { S(xz, xz) },
+  { S(txz, xz) },
 #undef S
 };