Yeah, I was trying too hard to avoid a problem which doesn't really
exist. Here's an updated patch.
diff --git a/policy.sgml b/policy.sgml
index bad28af..8b715d0 100644
--- a/policy.sgml
+++ b/policy.sgml
@@ -7427,7 +7427,18 @@ fname () {
</example>
must be supported and must set the value of<tt>c</tt> to
<tt>delta</tt>.
-</item>
+ </item>
+ <item>The XSI extension to<prgn>kill</prgn> allowing<tt>kill
+ -<var>signal</var></tt>, where<var>signal</var> is either
+ the name of a signal or one of the numeric signals listed in
+ the XSI extension (0, 1, 2, 3, 6, 9, 14, and 15), must be
+ supported.
+ </item>
+ <item>The XSI extension to<prgn>trap</prgn> allowing numeric
+ signals must be supported. In addition to the signal
+ numbers listed in the extension, which are the same as for
+ <prgn>kill<prgn> above, 13 (SIGPIPE) must be allowed.
+ </item>
</list>
If a shell script requires non-SUSv3 features from the shell
interpreter other than those listed above, the appropriate shell