--- AnyEvent/lib/AnyEvent.pm	2007/10/27 15:10:09	1.28
+++ AnyEvent/lib/AnyEvent.pm	2007/11/02 19:12:02	1.30
@@ -197,9 +197,9 @@
 
 The known classes so far are:
 
-   AnyEvent::Impl::Coro      based on Coro::Event, best choice.
-   EV::AnyEvent              based on EV (an interface to libevent)
-   AnyEvent::Impl::Event     based on Event, also best choice :)
+   EV::AnyEvent              based on EV (an interface to libev, best choice)
+   AnyEvent::Impl::Coro      based on Coro::Event, second best choice.
+   AnyEvent::Impl::Event     based on Event, also second best choice :)
    AnyEvent::Impl::Glib      based on Glib, second-best choice.
    AnyEvent::Impl::Tk        based on Tk, very bad choice.
    AnyEvent::Impl::Perl      pure-perl implementation, inefficient.
@@ -351,7 +351,7 @@
    my $signal = uc $arg{signal}
       or Carp::croak "required option 'signal' is missing";
 
-   $SIG_CB{$signal}{$arg{cb}} = $arg{cb};
+   $SIG_CB{$signal}{$arg{cb} += 0} = $arg{cb};
    $SIG{$signal} ||= sub {
       $_->() for values %{ $SIG_CB{$signal} || {} };
    };
@@ -376,7 +376,7 @@
 
 sub _child_wait {
    while (0 < (my $pid = waitpid -1, $WNOHANG)) {
-      $_->() for values %{ (delete $PID_CB{$pid}) || {} };
+      $_->() for values %{ $PID_CB{$pid} || {} }, %{ $PID_CB{0} || {} };
    }
 
    undef $PID_IDLE;