Incorrect HTML escaping for const expressions

[sethladd]

For example:

From http://docs.flutter.io/flutter/material/material-library.html

Probably should be const <int, List<BoxShadow>> {1 : const <BoxShadow> [ ...

[sethladd]

From dartdoc 0.8.4

[Hixie]

You can see this with kMaterialEdges now (same page).

[keertip]

Looks like kMaterialEdges is missing type information after the const. Is that it? Don't see the const > as in the screenshot by Seth.

[Hixie]

If you look at the HTML source you'll see there's unescaped HTML:

          <div>
            <span class="signature"><code>const <MaterialType, double> {MaterialType.canvas : null, MaterialType.card : 2.0, MaterialType.circle : null, MaterialType.button : 2.0, MaterialType.transparency : null}</code></span>
          </div>

[eseidel]

This is presumably the line:
https://github.com/dart-lang/dartdoc/blob/master/lib/templates/_constant.html#L8
Unclear why it uses {{{ instead of {{, the 3 { makes it unescaped according to the mustache manual:
https://mustache.github.io/mustache.5.html

[devoncarew]

I think it needs to use the unescaped braces there because the constant string might have hyperlinks for some of the types referenced in it (const Foo<double>()).