Comments are reported twice when using strict mode.

[BenoitZugmeyer]

This code should log the comment "Comment" only once, as it does without the 'use strict' statement.

var content = "\n\
function plop() {\n\
    'use strict';\n\
    /* Comment */\n\
}";

acorn.parse(content, {
  onComment: function (block, text) {
    console.log(text);
  }
});