From 2f64b456774ffd8b1c8d17e5deb86030599ec00d Mon Sep 17 00:00:00 2001
From: Dylan Araps <dylan.araps@gmail.com>
Date: Sat, 29 Feb 2020 20:13:47 +0200
Subject: [PATCH] kiss: Abort if not TTY and needed

---
 kiss | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/kiss b/kiss
index 821b77f..9d4e877 100755
--- a/kiss
+++ b/kiss
@@ -1216,6 +1216,11 @@ args() {
             die "Arguments contain invalid characters: '!*[]'"
         esac
 
+    # Abort early if output is not a TTY and the requirement is that it
+    # be so (password prompts, user input, etc). This is a safeguard.
+    [ "${action##[bciru]*}" ] || [ -t 1 ] ||
+        die "Output not a tty"
+
     # Parse some arguments earlier to remove the need to duplicate code.
     case $action in
         c|checksum|s|search)