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The feature still exists, for compatibility with code that tries to enable
it, but it has no effect. The postderef_qq feature still exists, however.
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As proposed by RJBS.
The "5.24" feature bundle (and therefore C<< use v5.24 >>) now enable
postderef and postderef_qq.
I can't find any precedent for what to do with the relevant experimental::*
warnings category when an experimental feature graduates to acceptance. I
have elected to leave the category in place, so that code doing C<< no
warnings "experimental::postderef" >> will continue to work. This means that
C<< use warnings "experimental::postderef" >> is also accepted, but has no
effect.
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Also correct the description of lvref magic. When it was first added,
it was for list assignments only, but that soon changed.
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Declarative syntax to unwrap argument list into lexical variables.
"sub foo ($a,$b) {...}" checks number of arguments and puts the
arguments into lexical variables. Signatures are not equivalent to the
existing idiom of "sub foo { my($a,$b) = @_; ... }". Signatures are only
available by enabling a non-default feature, and generate warnings about
being experimental. The syntactic clash with prototypes is managed by
disabling the short prototype syntax when signatures are enabled.
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It doesn't do anything yet.
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Otherwise CURRENT_FEATURE_BUNDLE will end up including any hints added
later that happen to use higher bits.
This was causing autobox to turn off all features, causing failures
for Dist::Zilla::PluginBundle::AVAR.
I’m not adding tests for this, as such tests would need constant
tweaking in future perl developement. What autobox is doing is
naughty and unsupported anyway.
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unicode_strings was not the longest string. We can determine it auto-
matically, now that this macro is in a generated file.
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It makes little sense to have it in perl.h any more. (Until
recently, feature.h didn’t exist.)
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Now that we have hints in $^H to indicate the default feature bun-
dle, there is no need for entries in %^H that turn features off by
their presence.
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unsigned >= 0 produces a warning, even if the 0 is actually a macro.
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CURRENT_HINTS is not specific to features, but for now will be used by
nothing else. It returns the compile-time or run-time hints, depend-
ing on whether PL_curcop points to &PL_compiling.
CURRENT_FEATURE_BUNDLE extracts the feature bundle number from the
current hints.
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