Fix code tags

var langs = %w(ada cpp-qt pascal lscript z80 visualprolog
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povray c gettext).join('|')
 
var text = ARGF.slurp
 
text.gsub!(Regex('<(' + langs + ')>'), {|s1| "<lang #{s1}>" })
text.gsub!(Regex('</(' + langs + ')>'), "</" + "lang>")
text.gsub!(
    Regex('<code\h+(' + langs + ')>(.*?)</code>', 's'),
    {|s1,s2| "<lang #{s1}>#{s2}</" + "lang>"}
)
 
print text

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