CmdUtils.CreateCommand({
    names: ["rewrap"],
    arguments: [{role: "object",
               nountype: noun_arb_text,
               label: "input"}],
    help: "removes unnecessary carriage returns and strings of spaces",
    execute: function(arguments) {
      var selectedText=arguments.text;
      selectedText=selectedText.replace(/[\r\n]{2}/g,"§#!");
      selectedText=selectedText.replace(/[\r\n]+/g," ");
      selectedText=selectedText.replace(/§#!/g,"\r\r");
      selectedText=selectedText.replace(/  +/g," ");
      CmdUtils.setSelection("",{text: selectedText});
    },
    preview: function(pblock, arguments) {
      var selectedText=arguments.text;
      selectedText=selectedText.replace(/[\r\n]{2}/g,"§#!");
      selectedText=selectedText.replace(/[\r\n]+/g," ");
      selectedText=selectedText.replace(/§#!/g,"\r\r");
      selectedText=selectedText.replace(/  +/g," ");
      pblock.innerHTML=selectedText;
    }
})