Bug#477240: Please clarify status of XSI extensions for kill and trap
Raphael Geissert <geissert@debian.org> writes:
>> diff --git a/policy.sgml b/policy.sgml
>> index bad28af..1658cbf 100644
>> --- a/policy.sgml
>> +++ b/policy.sgml
>> @@ -7427,7 +7427,19 @@ 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
>> + symbols must be supported. However, only the signal numbers
> s/symbols/signals/ ?
Whoops, yes.
>> + listed in the extension, which are the same as
>> + for <prgn>kill</prgn> above, plus SIGPIPE (13) must be
>> + supported.
> Why did you phrase the second sentence that way? why not something like
> "In addition to the listed signal numbers, which are the same as for
> <prgn>kill</prgn> above, SIGPIPE (corresponding to number 13) must be
> supported?"
> The list of signal numbers which are part of the XSI extension are well
> defined, so there shouldn't be any reason to believe others are accepted
> too (and avoids the use of 'only ... must be supported,' which I think
> is easier to misinterpret.)
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
--
Russ Allbery (rra@debian.org) <http://www.eyrie.org/~eagle/>
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