From 59e0116b6b55f729708a0b864ad2bd19556ebcf6 Mon Sep 17 00:00:00 2001
From: Russ Allbery <rra@debian.org>
Date: Thu, 3 Jun 2010 09:31:35 -0700
Subject: [PATCH] Allow abort if a required prompt can't be answered

Allow, but caution against, maintainer scripts to abort if a required
prompt has no reasonable default and there is no controlling terminal.
---
 policy.sgml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/policy.sgml b/policy.sgml
index 1e9934c..3f6b82d 100644
--- a/policy.sgml
+++ b/policy.sgml
@@ -3566,6 +3566,15 @@ Files:
 	  assume that program will handle falling back to noninteractive
 	  behavior.
 	</p>
+
+	<p>
+	  For high-priority prompts without a reasonable default answer,
+	  maintainer scripts may abort if there is no controlling
+	  terminal.  However, this situation should be avoided if at all
+	  possible, since it prevents automated or unattended installs.
+	  In most cases, users will consider this to be a bug in the
+	  package.
+	</p>
       </sect>
 
       <sect id="exitstatus">
-- 
2.39.5