Add support for condtional comment

[zimski]

Now the parser support conditional comment

• The parser will fire openCondtionalComment when he pase some thing like .
• The html between the two tags is parsed as usual way

[fb55]

I really don't know if I want this feature. On the one hand, it's outdated technology and won't be used on modern pages, on the other hand, I had a case where I wanted this recently and just went with a hack.

Anyway, just to get started, this should definitely be enabled by an option (HTML5 should remain the default). A link to some documentation from Microsoft to ensure all cases are covered would be nice as well.

[zimski]

Hi , thx for the quick reply.

I really don't know if I want this feature. On the one hand, it's outdated
technology and won't be used on modern pages, on the other hand, I had a
case where I wanted this recently and just went with a hack.

I agree with you .. the html conditional comment is a crap and are no
longer supported in IE10 (good news :) )
However, this kind of comment will still on a lot of html pages over the
web for some years, so in my mind it's a good thing that be natively
supported.

Anyway, just to get started, this should definitely be enabled by an option
(HTML5 should remain the default).

yes, i will do it

A link to some documentation from Microsoft to ensure all cases are
covered would be nice as well.

MSDN https://msdn.microsoft.com/en-us/library/ms537512(v=vs.85).aspx

I added also this case (it's not documented in MSDN ... love Microsoft :) )

 <!--[if gt IE 8]><!-->
        <link rel="stylesheet" media="screen, projection" type="text/css" href="http://www.website.com/_ui/desktop/assets/css/common.css" />
        .....
 <!--<![endif]-->

[fb55]

Not a feature that is part of today's web anymore, closing this.

[cossssmin]

MSO comments, like the one in @zimski's reply above, are still used (and necessary) in HTML emails. Would have been a very useful feature for email developers.