Incorrect work uglify with webpack

[arshtepe]

After minimalization by uglify quotation marks were removed from string
config:

 var webpack = require("webpack");

 module.exports = {
    output: {
        filename:  "dist/index.js"
    },
    context: __dirname,
    entry: "./index.js",
    module: {
        loaders: [
            { test: /\.html/, loaders: ["html-loader"] },
        ]
    },
    plugins: [ new webpack.optimize.UglifyJsPlugin({ }) ]
}

index.js:

console.log( "text: "+ require("./index.html") );

index.html:

<span class="quick-search-shortcut" >
    <i class="icon-loupe" ></i>
</span>

result:

! function (o) {
    function r(e) {
        if (t[e]) return t[e].exports;
        var n = t[e] = {
            exports: {},
            id: e,
            loaded: !1
        };
        return o[e].call(n.exports, n, n.exports, r), n.loaded = !0, n.exports
    }
    var t = {};
    return r.m = o, r.c = t, r.p = "", r(0)
}([function (o, r, t) {
    var e = t(1);
    console.log("text: " + e)
}, function (o, r) {
    o.exports = "<span class=quick-search-shortcut><i class=icon-loupe></i></span>"//removed quotation marks in class attribute
}]);

[sokra]

That's working as intented. The quotes are optional. Minimizing removes them.