Unknown entity ©

[fouvry]

Describe the bug

When I open the Python documentation Ebook with Foliate, the following error message is shown at the top (in a red box)

This page contains the following errors:  error on line 5318 at column 11: Entity 'copy' not defined
Below is a rendering of the page up to the first error.

Since the content is HTML, the entity © should be known since it is one of the predefined entities for HTML. I suspect that it will be necessary to include this list somewhere (https://www.w3.org/TR/html52/syntax.html#named-character-references, but they may be slightly different for HTML 4, and/or XHTML.)

To Reproduce

Download for instance https://docs.python.org/3.8/archives/python-3.8.6-docs.epub, and open it with Foliate.

Expected behavior
I expect no error message to appear, and the entity to be displayed.

Version:

• Foliate version: 2.2.0
• OS/Distribution and version: Ubuntu 20.04.1 LTS
• Desktop environment: GNOME 3.36.4
• Installation method: apt

I love Foliate - it's the best Desktop-Ebook solution that I've found until now. Thanks!

[johnfactotum]

Closing this one in favor of #699