--- tar-1.15.91/src/buffer.c.lzma	2006-06-12 15:22:46.000000000 +0200
+++ tar-1.15.91/src/buffer.c	2006-06-29 18:21:31.000000000 +0200
@@ -196,7 +196,8 @@ enum compress_type {
   ct_none,
   ct_compress,
   ct_gzip,
-  ct_bzip2
+  ct_bzip2,
+  ct_lzma
 };
 
 struct zip_magic
@@ -213,6 +214,9 @@ static struct zip_magic const magic[] = 
   { ct_compress, 2, "\037\235", "compress", "-Z" },
   { ct_gzip,     2, "\037\213", "gzip", "-z"  },
   { ct_bzip2,    3, "BZh",      "bzip2", "-j" },
+  /* The first bytes of a LZMA compressed file describe some compression
+     settings and thus vary. This handles the most common case: */
+  { ct_lzma, 3, "]\000\000", "lzma", "-Y" },
 };
 
 #define NMAGIC (sizeof(magic)/sizeof(magic[0]))
--- tar-1.15.91/src/tar.c.lzma	2006-06-13 09:59:30.000000000 +0200
+++ tar-1.15.91/src/tar.c	2006-06-29 18:22:36.000000000 +0200
@@ -559,6 +559,8 @@ static struct argp_option options[] = {
    N_("control pax keywords"), GRID+8 },
   {"label", 'V', N_("TEXT"), 0,
    N_("create archive with volume name TEXT; at list/extract time, use TEXT as a globbing pattern for volume name"), GRID+8 },
+  {"lzma", 'Y', 0, 0,
+   N_("filter the archive through lzma using 'lzma' wrapper script"), 68 },
   {"bzip2", 'j', 0, 0,
    N_("filter the archive through bzip2"), GRID+8 },
   {"gzip", 'z', 0, 0,
@@ -1354,6 +1356,10 @@ parse_opt (int key, char *arg, struct ar
 	}
       break;
 
+    case 'Y':
+      set_use_compress_program_option ("lzma");
+      break;
+
     case 'z':
       set_use_compress_program_option ("gzip");
       break;