``` echo no lang ``` ```sh #!/bin/sh echo triple backtick valu=${aaa} ``` {% codeblock lang:c++ %} using namespace std; for(int i=0;i<10;i++){ std::cout << "codeblock" << std::endl; } {% endcodeblock %} ~~~ .ruby puts "PHP Markdown Extra wave codeblock" def func(flag) if(flag) puts "OK" else puts "FAILED" end end ~~~