<:
my $info = Data('perl');
+use feature 'signatures';
+sub vname ($v) {
+ return sprintf 'v%d%03d', unpack 'C*', $v;
+}
+sub linkversion ($v) {
+ return showlink(sprintf('%vd', $v), '#'.vname($v));
+}
+
eval {
use List::Util 'first';
use Time::Piece;
use Time::Seconds;
- use feature 'signatures';
- sub linkversion ($v) {
- return sprintf('%vd', $v);
- }
+ my @versions = sort keys %{$info};
my $now = Time::Piece->new;
+ $now = $now->strptime($_, '%Y-%m-%d') for $get{at} // ();
+
+ # perlpolicy: «We "officially" support the two most recent stable release
+ # series. [...] we will attempt to fix critical issues»
+ $info->{ $versions[-2] }{versum} //= "active core support";
+ $info->{ $versions[-1] }{versum} //= "latest stable release";
+
+ # perlpolicy: «we will attempt to fix critical issues in the two most
+ # recent stable 5.x release series»
my $coreeol = ($now - ONE_YEAR * 3)->strftime('%F');
- my $vcore = first { $info->{$_}{release} ge $coreeol } sort keys %{$info};
- say "<p>Core security support is provided for 3 years",
- ", so typical users should run at least $_."
- for linkversion($vcore);
+ my $vcore = first { $info->{$_}{release} ge $coreeol } @versions;
+ print "<p>Core security support is provided for 3 years";
+ print ", so typical users should run at least ", linkversion($_)
+ for $vcore // ();
+ say '.';
+ $info->{$vcore}{versum} //= "official security patches";
+ # «We encourage vendors to ship the most recent supported release of Perl
+ # at the time of their code freeze» with debian&ubuntu having 5 years LTS
my $vendoreol = ($now - ONE_YEAR * 5)->strftime('%F');
my $vdebian = first {
$info->{$_}{release} ge $vendoreol && $info->{$_}{distro}{debian}
- } sort keys %{$info};
+ } @versions;
say sprintf "Stable distributions such as Debian %s maintain %s+.",
- $info->{$_}{distro}{debian}, linkversion($_) for $vdebian;
+ $info->{$_}{distro}{debian}, linkversion($_) for $vdebian // ();
+ $info->{$vdebian}{versum} //= "still maintained by common vendors";
+ # extended support given at random
my $nowcmp = $now->strftime('%F');
- my $vdino = first { $info->{$_}{support} ge $nowcmp } sort keys %{$info};
+ my $vdino = first { $info->{$_}{support} ge $nowcmp } @versions;
say "Enterprise platforms retain versions up to $_."
- for linkversion($vdino);
+ for map { linkversion($_) } $vdino // ();
return 1;
} or Alert('Missing version recommendations', $@);
say '</p>';
my $verrow = $info->{$vernum};
defined $verrow->{unstable} and next unless exists $get{v};
- say '<div class="section">';
- say sprintf '<h2>%vd <small>%s</small></h2>', $vernum, $verrow->{release};
+ say sprintf '<div class="section" id="%s">', vname($vernum);
+ my $title = $verrow->{release} // '?';
+ $title .= ": $_" for $verrow->{versum} // ();
+ say sprintf '<h2>%vd <small>%s</small></h2>', $vernum, $title;
say '<dl>';
for (@{ $verrow->{new} }) {
my ($topic, $desc, $attr) = @{$_};