X-Git-Url: https://git.arvados.org/lightning.git/blobdiff_plain/93e063d8357b8682c0a730fc702f8b05ece6c46f..9afef1c9ff879014c1caa2435e2ddc8c3eb80797:/filter.go

diff --git a/filter.go b/filter.go
index 9fe150e63d..4c86c1b85b 100644
--- a/filter.go
+++ b/filter.go
@@ -144,6 +144,9 @@ func (cmd *filtercmd) RunCommand(prog string, args []string, stdin io.Reader, st
 		return 0
 	} else if err != nil {
 		return 2
+	} else if flags.NArg() > 0 {
+		err = fmt.Errorf("errant command line arguments after parsed flags: %v", flags.Args())
+		return 2
 	}
 	cmd.output = stdout