Improved doT

dotnew.js

var doTnew = (function() {

    var templateSettings = {
        evaluate:    /\{\{([\s\S]+?)\}\}/g,
        interpolate: /\{\{=([\s\S]+?)\}\}/g,
        encode:      /\{\{!([\s\S]+?)\}\}/g,
        varname: 'it',
        strip : true,
        concat: false
    };
    
    var ampRe = /&/g,
      ltRe = /</g,
      gtRe = />/g,
      aposRe = /'/g,
      quoteRe = /"/g;
    
    function escape(str) {
        return str.replace(ampRe,'&amp;')
            .replace(ltRe,'&lt;')
            .replace(gtRe,'&gt;')
            .replace(aposRe, '&#39;')
            .replace(quoteRe, "&quot;");
    };

    function replaceQuotesAndWhiteSpace(str){
        return str.replace(/\\'/g, "'").replace(/\\\\/g,"\\").replace(/[\r\t\n]/g, ' ')
    }

    function createTemplateFn(tmpl) {
        c = templateSettings;
        
        var o = [4];

        o[0]= "var u=this.u;var t=this.t;"
        o[1]= c.concat ? "var out='';function p(str){out+=str};p('":"var count=0;var out=[500];function p(str){out[count++] = str;};p('";
        o[2]=((c.strip) ? tmpl.replace(/\s*<!\[CDATA\[\s*|\s*\]\]>\s*|[\r\n\t]|(\/\*[\s\S]*?\*\/)/g, ''): tmpl)
            .replace(/\\/g, '\\\\')
            .replace(/'/g, "\\'")
            .replace(c.interpolate, function(match, code) {
                return ["');p(",replaceQuotesAndWhiteSpace(code),");p('"].join('');
            })
            .replace(c.encode, function(match, code) {
                return ["');p(","u.escape(",replaceQuotesAndWhiteSpace(code),"));p('"].join('');
            })
            .replace(c.evaluate, function(match, code) {
                return ["');",replaceQuotesAndWhiteSpace(code),"p('"].join('');
            });
        o[3]=c.concat ? "');return out;":"');return out.join('');";
        var str = o.join('')
            .replace(/\n/g, '\\n')
            .replace(/\t/g, '\\t')
            .replace(/\r/g, '\\r')
            .replace(/p\(''\);/g, '');

        try {
            return new Function(c.varname, str);
        } catch (e) {
            if (typeof console !== 'undefined') console.log("Could not create a template function: " + str);
            throw e;
        }
    };

    var utils = {
        escape: escape
    };

    var templates = {
        
    };

    return {
        settings: templateSettings,
        register: function(name, tmpl){
            templates[name] = createTemplateFn(tmpl);
        },
        render: function(name, data){
            return templates[name].call({u: utils, t: templates}, data);
        }
    };
}());