def unescape_html
munge_uni = !($HAVE_LIB['iconv'] && $config['use_iconv']) || $config['use_iconv_munge']
str = self.dup
str.gsub!(/&(.*?);/n) {
m = $1.dup
case m
when /^amp$/ni: '&'
when /^nbsp$/ni: ' '
when /^quot$/ni: '"'
when /^lt$/ni: '<'
when /^gt$/ni: '>'
when /^copy/: '(c)'
when /^trade/: '(tm)'
when /^#8212$/n: ","
when /^#8217$/n: "'"
when /^#(\d+)$/n
r = $1.to_i
(!munge_uni || r.between?(0, 255)) ? r.chr : $config['unicode_munge_str']
when /^#x([0-9a-f]+)$/ni
r = $1.hex
(!munge_uni || r.between?(0, 255)) ? r.chr : $config['unicode_munge_str']
end
}
str
end