split: diagnose when --filter is used with a chunk number

* src/split.c (main): Exit with a diagnostic if --filter
is specified along with a specific chunk number.
* test/split/filter: Ensure this combination fails.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/split.c b/src/split.c
index 5e203f1b7..9e23f8689 100644
--- a/src/split.c
+++ b/src/split.c
@@ -1175,6 +1175,12 @@ main (int argc, char **argv)
         }
     }
 
+  if (k_units != 0 && filter_command)
+    {
+      error (0, 0, _("--filter does not process a chunk extracted to stdout"));
+      usage (EXIT_FAILURE);
+    }
+
   /* Handle default case.  */
   if (split_type == type_undef)
     {