From eb44ca26a84c369a7908f19517c0a2f8f621d57f Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Tue, 13 Jun 2023 20:25:40 +0100
Subject: [PATCH 02/15] tar: Document the optional tar option in --help output
 and synopsis

Fixes: commit 05b49f89dccb0ca3fd0919e9502c54dbcadf0b73
---
 filters/tar/nbdkit-tar-filter.pod | 1 +
 filters/tar/tar.c                 | 5 +++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/filters/tar/nbdkit-tar-filter.pod b/filters/tar/nbdkit-tar-filter.pod
index 96aba16d9..eb0cfd4ab 100644
--- a/filters/tar/nbdkit-tar-filter.pod
+++ b/filters/tar/nbdkit-tar-filter.pod
@@ -5,6 +5,7 @@ nbdkit-tar-filter - read and write files inside tar files without unpacking
 =head1 SYNOPSIS
 
  nbdkit file FILENAME.tar --filter=tar tar-entry=PATH_INSIDE_TAR
+                                       [tar=TAR_COMMAND]
 
 =head1 EXAMPLES
 
diff --git a/filters/tar/tar.c b/filters/tar/tar.c
index c650a3499..f3adb2c46 100644
--- a/filters/tar/tar.c
+++ b/filters/tar/tar.c
@@ -96,8 +96,9 @@ tar_config_complete (nbdkit_next_config_complete *next,
   return next (nxdata);
 }
 
-#define tar_config_help \
-  "tar-entry=<FILENAME> (required) The path inside the tar file to serve."
+#define tar_config_help                                                 \
+  "tar-entry=<FILENAME> (required) The path inside the tar file to serve.\n" \
+  "tar=<PATH>                      Path of the tar binary."
 
 static int
 tar_thread_model (void)
-- 
2.41.0