signal.c: signal list to kill

* signal.c (rb_f_kill): [DOC] mention known signal list.
  [ruby-core:66162] [Bug #10492]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48358 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 0 deletions

diff --git a/signal.c b/signal.c
index 5098b8ddb3..a3f4a20774 100644
--- a/signal.c
+++ b/signal.c
@@ -374,6 +374,8 @@ static void signal_enque(int sig);
  *  a POSIX signal name (either with or without a +SIG+ prefix). If _signal_ is
  *  negative (or starts with a minus sign), kills process groups instead of
  *  processes. Not all signals are available on all platforms.
+ *  The keys and values of +Signal.list+ are known signal names and numbers,
+ *  respectively.
  *
  *     pid = fork do
  *        Signal.trap("HUP") { puts "Ouch!"; exit }