X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=src%2Ftar.c;h=9350c50e4d6a52a28b9ffefc7bae8d7acd342c90;hb=1665d38fb74067f82e3de2ec11020e84f3a0ad39;hp=33616d017220acdb069e545a39efdfb3959b3ca2;hpb=80e5de931058de5cebdf162785069ae3f8db5887;p=chaz%2Ftar

diff --git a/src/tar.c b/src/tar.c
index 33616d0..9350c50 100644
--- a/src/tar.c
+++ b/src/tar.c
@@ -481,7 +481,7 @@ Local file selection:\n\
 	     stdout);
 #if !MSDOS
       fputs (_("\
-  -N, --newer=DATE             only store files newer than DATE\n\
+  -N, --newer=DATE-OR-FILE     only store files newer than DATE-OR-FILE\n\
       --newer-mtime=DATE       compare date and time when data changed only\n\
       --after-date=DATE        same as -N\n"),
 	     stdout);
@@ -1286,7 +1286,8 @@ see the file named COPYING for details."));
       || multi_volume_option
       || sparse_option)
     assert_format (FORMAT_MASK (OLDGNU_FORMAT)
-		   | FORMAT_MASK (GNU_FORMAT));
+		   | FORMAT_MASK (GNU_FORMAT)
+		   | FORMAT_MASK (POSIX_FORMAT));
   
   if (occurrence_option)
     {
@@ -1316,7 +1317,7 @@ see the file named COPYING for details."));
 
   if (archive_names > 1 && !multi_volume_option)
     USAGE_ERROR ((0, 0,
-		  _("Multiple archive files requires `-M' option")));
+		  _("Multiple archive files require `-M' option")));
 
   if (listed_incremental_option
       && newer_mtime_option != TYPE_MINIMUM (time_t))
@@ -1343,6 +1344,22 @@ see the file named COPYING for details."));
 		      (unsigned long) volume_label_max_len));
     }
 
+  if (verify_option)
+    {
+      if (multi_volume_option)
+	USAGE_ERROR ((0, 0, _("Cannot verify multi-volume archives")));
+      if (use_compress_program_option)
+	USAGE_ERROR ((0, 0, _("Cannot verify compressed archives")));
+    }
+
+  if (use_compress_program_option)
+    {
+      if (multi_volume_option)
+	USAGE_ERROR ((0, 0, _("Cannot use multi-volume compressed archives")));
+      if (subcommand_option == UPDATE_SUBCOMMAND)
+	USAGE_ERROR ((0, 0, _("Cannot update compressed archives")));
+    }
+  
   /* If ready to unlink hierarchies, so we are for simpler files.  */
   if (recursive_unlink_option)
     old_files_option = UNLINK_FIRST_OLD_FILES;