On Thu, Oct 30, 2008 at 12:49:48PM +0100, Vincent Lefevre wrote: > On 2008-10-30 13:24:10 +0200, Niko Tyni wrote: > > I don't think this is a bug. As documented in perlvar.pod, > > the value $! is meaningful only immediately after a failure. > > The problem with the readline function is that one cannot know > if there's a failure without looking at $! first! Note that the > example tests whether the returned value is defined, but undef > in case of end of file isn't a failure. But what if the result > is not undef (in either scalar or list context) while there's a > failure?
My understanding is that this can't happen: a failure guarantees that the result is undef, but getting an undefined result does not guarantee there was a failure (you have to test $! additionally). The example in 'perldoc -f readline' does this, but your example script doesn't. > So, either the behavior or the documentation has to be changed. Yes, I agree the readline documentation could be more explicit about this. -- Niko Tyni [EMAIL PROTECTED] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
