PreMailer is encoding URLs with base64-encoded querystrings, which is breaking links about premailer.net HOT 3 OPEN

This is the correct output. Per user @FlorianRappl on the relevant AngleSharp issue AngleSharp/AngleSharp#348:

This is by specification, see the string escaping that needs to be applied on attribute values..

from premailer.net.

This is the correct output. Per user @FlorianRappl on the relevant AngleSharp issue AngleSharp/AngleSharp#348:

This is by specification, see the string escaping that needs to be applied on attribute values..

@jordanwallwork - this is not the correct output even if the HTML standard says attribute values need to be string escaped. PreMailer.Net is a CSS inliner, it is not an HTML validator or sanitizer. This side effect is completely blocking some of my work and I need a workaround. I don't have any control over the URLs in the HTML, but I am not allowed to change them. I need to inline the CSS without changing the URLs.

Additionally, it encodes these values even when they are not an HTML attribute value, which is definitely wrong.

<p>Ben & Jerry's</p>

This is not required to be encoded by the HTML specification but PreMailer.Net encodes it anyway. Result:

<p>Ben &amp; Jerry's</p>

from premailer.net.

EDIT: Sorry, I haven't seen this solution:
#198

So, I'm going to try to write a formatter.
Maybe somebody might find this comment helpful.
-mm

from premailer.net.