charset: extend inheritance to generic metadata hashes

[sheet.git] / tools / mkcaniuse

diff --git a/tools/mkcaniuse b/tools/mkcaniuse
index eaadead73056ff3da105de490c21a077bb98264a..53cd9047ecff037ce304e4272d5e63f0bca5cc5e 100755 (executable)
--- a/tools/mkcaniuse
+++ b/tools/mkcaniuse
@@ -1,6 +1,5 @@
 #!/usr/bin/env perl
-use 5.010;
-use strict;
+use 5.014;
 use warnings;
 
 use Data::Dump 'pp';
@@ -13,12 +12,16 @@ our $VERSION = '1.01';
 local $/;  # slurp
 my $source = readline;
 
+$JSON::PP::false = 0;
+$JSON::PP::true  = 1;
+
 my $data = from_json($source);
 my $update = eval { stat(${^LAST_FH} // $ARGV)->mtime }
        or warn "Could not determine input time\n";
 $data->{-date} = Time::Piece->new($update)->datetime;
 
-print pp($data);
+say "# automatically generated by $0";
+print '+', pp($data);
 
 __END__