Front page | perl.perl5.porters |
Postings from June 2015
On Fri, 5 Jun 2015 16:42:35 +0100
Smylers <Smylers@stripey.com> wrote:
> It'd be better for a plain use warnings to mean ‘the warnings of
> whichever version I've specified, defaulting to v5.22 if none’. Then
> Eddie can get his desired behaviour with:
>
> use v5.24;
> use warnings;
>
> On finding itself invoked without any tags, warnings would then see
> that use v5.24 has been specified, and so behave like use warnings
> 'v5.24'.
>
> That way Perl can safely introduce new warnings every version, and
> users get to benefit from the new warnings straightforwardly, yet
> people can still upgrade cautiously.
I wonder if there'd be possibility of this applying something like
use v5.24; ==> $^H{requested_version} = '5.024';
such that now warnings.pm can simply inspect the caller's hints hash
for this key, to see what version we're working to. An unqualified
use warnings;
could then mean the same as
use warnings ':5.24';
in this case.
--
Paul "LeoNerd" Evans
leonerd@leonerd.org.uk
http://www.leonerd.org.uk/ | https://metacpan.org/author/PEVANS
Thread Previous
|
Thread Next