Bug#722443: Any use of "when" now produces warnings

[gregor herrmann]

On Wed, 11 Sep 2013 13:52:21 +0800, jidanni at jidanni.org wrote:

> Severity: wishlist
> 
> Any use of "when" now produces warnings.

Correct, smartmatch (and given/when) are marked as experimental
in 5.18:
https://metacpan.org/module/RJBS/perl-5.18.0/pod/perldelta.pod#The-smartmatch-family-of-features-are-now-experimental
https://metacpan.org/module/RJBS/perl-5.18.0/pod/perldelta.pod#New-mechanism-for-experimental-features
 
> Well they should have warned people earlier not to use it in the first
> place then.

So to fix this bug report, someone has to go back in time to 2007 and
add the experimental mechanism in 5.10; sounds easy :)

Cheers,
gregor

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