X-Git-Url: http://git.shiar.net/sheet.git/blobdiff_plain/dddba283566021f3a54add9ce599e3fed9d0cd27..1c575b2b48f7b4769d1ce38d81dc200a4b999ef6:/tools/mkcaniuse

diff --git a/tools/mkcaniuse b/tools/mkcaniuse
index f72122b..b162c2f 100755
--- a/tools/mkcaniuse
+++ b/tools/mkcaniuse
@@ -8,7 +8,7 @@ use File::stat;
 use Time::Piece;
 use List::Util 'uniq';
 
-our $VERSION = '1.03';
+our $VERSION = '1.04';
 
 my %BROWSERJOIN = (
 	edge    => 'ie',
@@ -58,6 +58,22 @@ for my $feature (values %{ $data->{data} }) {
 
 while (my ($agent, $row) = each %{ $data->{agents} }) {
 	$row->{versions} = [ uniq map { $_->{version} } @{ $row->{version_list} } ];
+
+	# omit identical values from subsequent versions
+	for my $feature (values %{ $data->{data} }) {
+		my $cmp;  # same value to be omitted
+		my $verstats = $feature->{stats}->{$agent};
+		for my $version (@{ $row->{versions} }) {
+			defined $verstats->{$version}
+				or warn "missing feature $feature->{title} for $agent $version";
+			if (defined $cmp and $verstats->{$version} eq $cmp) {
+				delete $verstats->{$version};
+			}
+			else {
+				$cmp = $verstats->{$version};
+			}
+		}
+	}
 }
 
 say "# automatically generated by $0";