Sanitizer process attributes with no values

[Baidaly]

I use special ExtJS HTML templates that need to have attributes without value. E.g.

<tpl if="true">
    TEST
<tpl else>
    TEST 2
</tpl>

When I run Sanitizer, it converts it to

<tpl if="true">
    TEST
<tpl else="">
    TEST 2
</tpl>

Which is not valid for ExtJS. Is there a way to leave attributes as is?

Thank you!

[tiesont]

I think that's actually due to AngleSharp (see AngleSharp #434), and it's likely because the latter is correct XML. From reading that issue, it seems like this is intentional, at least for now.

It's a kludge, but you can probably post-process the sanitized markup to remove the empty attribute value:

markup = markup.Replace("=\"\"", string.Empty);

Not pretty, but I don't see why it wouldn't work.

[mganss]

Browsers seem to behave the same way:

var d = document.createElement("div");
d.innerHTML = '<span title>Test</span>';
d.innerHTML ⇒ <span title="">Test</span>

The sanitizer used on GitHub does the opposite: <b title="">Test</b> becomes <b title>Test</b>: Test

Besides what @tiesont suggested, you can also provide your own instance of IMarkupFormatter to the OutputFormatter property by copying the HtmlFormatter class (I'll make the methods virtual in the next release) and changing the Attribute method. Adding the following line before this line should do the trick:

if (string.IsNullOrEmpty(value)) return temp.ToString();