Help for this page
$work =~ s{%(\w+)(?:\.(\w+))?}{ defined $2 ? $self->{'VARS'}{$1}{$2} : $self->{'VARS'}{default}{$1} }eg;
my $fml = $self->{'VARS'}; $work =~ s{ % ( \w+ (?:\.\w+)* ) }{ dive($fml, split /\./, $1) }xegr;