From 899e97f2730db331e3bce41c29f09d5f31164463 Mon Sep 17 00:00:00 2001
From: Ben Pfaff <blp@cs.stanford.edu>
Date: Fri, 8 Jan 2021 22:20:26 -0800
Subject: [PATCH] pspp-output: Don't write binary data to a terminal for
 dump-legacy-data.

---
 utilities/pspp-output.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/utilities/pspp-output.c b/utilities/pspp-output.c
index 6fdf48918a..d918496e8d 100644
--- a/utilities/pspp-output.c
+++ b/utilities/pspp-output.c
@@ -513,6 +513,9 @@ run_dump_legacy_data (int argc UNUSED, char **argv)
   if (err)
     error (1, 0, "%s", err);
 
+  if (raw && isatty (STDOUT_FILENO))
+    error (1, 0, "not writing binary data to tty");
+
   struct spv_item **items;
   size_t n_items;
   spv_select (spv, criteria, n_criteria, &items, &n_items);
-- 
2.30.2