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Postings from February 2007
> > So perl is behaving exactly like the underlying system call. Sorry
> > for any confusion.
> >
> > --
> > Rick Delaney
> > rick@bort.ca
the situation as described seems to me highly sub-optimal. Here's a note
to include in perlipc to document the situation:
--- perlipc.pod.orig 2007-02-05 13:09:29.000000000 -0600
+++ perlipc.pod 2007-02-05 13:13:18.000000000 -0600
@@ -69,6 +69,10 @@
Calling C<wait()> with C<$SIG{CHLD}> set to C<'IGNORE'> usually returns
C<-1> on such platforms.
+Perl program control flow on
+some BSD platforms will not return from C<system()> or backticks invocation
+until all child processes have ended, when C<$SIG{CHLD}> is set to C<'IGNORE'>.
+
Some signals can be neither trapped nor ignored, such as
the KILL and STOP (but not the TSTP) signals. One strategy for
temporarily ignoring signals is to use a local() statement, which will be
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