##
my $data = do { open my $fh, '<:raw:encoding(UTF-8)', $file
or die "$file: $!"; local $/; <$fh> };
##
##
my $data; { open my $fh, '<', $file or die "$file: $!";
local $/; $data = <$fh> };
##
##
my $data = do { local (*ARGV,$/); @ARGV=$file; <> };