Bug#541537: debian-policy: note about sensible-{editor,pager}

[Clint Adams <schizo@debian.org>]

Package: debian-policy
Severity: normal

Due to potential confusion about sensible-utils being only de facto
Essential and whether or not packages should be declaring dependencies
on it.  Something like this footnote may be helpful.

diff --git a/policy.sgml b/policy.sgml
index bcbaacb..57c5386 100644
--- a/policy.sgml
+++ b/policy.sgml
@@ -7953,11 +7953,13 @@ done
 	  EDITOR or PAGER variables, that program may be configured to
 	  use <file>/usr/bin/sensible-editor</file> and
 	  <file>/usr/bin/sensible-pager</file> as the editor or pager
-	  program respectively.  These are two scripts provided in the
-	  Debian base system that check the EDITOR and PAGER variables
-	  and launch the appropriate program, and fall back to
-	  <file>/usr/bin/editor</file> and <file>/usr/bin/pager</file> if the
-	  variable is not set.
+	  program respectively.<footnote>A package making unconditional
+	  use of one of these programs must declare a dependency on
+	  the package containing them.</footnote> These are two scripts
+	  provided in the Debian base system that check the EDITOR and
+	  PAGER variables and launch the appropriate program, and fall
+	  back to <file>/usr/bin/editor</file> and
+	  <file>/usr/bin/pager</file> if the variable is not set.
 	</p>
 
 	<p>