Bookmarklet to remove escape sequences from highlighted text

decode.js

javascript:(
    function(){
        var range = window.getSelection().getRangeAt(0);
        var a = document.createElement('a');
        a.setAttribute('href',document.location);
        var t = window.getSelection().toString().replace(/\+/g, " ");
        a.appendChild(document.createTextNode(decodeURIComponent(t)));
        range.deleteContents();
        range.insertNode(a);
    }
)()