[BUG] Literal types printed with HTML escape chars

[yajo]

Describe the bug
Prints 'git' instead of "git".

To Reproduce
I have a @cached_property defined like this:

@dataclass
class Template:
    """Object that represents a template and its current state.

    See [configuring a template][configuring-a-template].
    """

    @cached_property
    def vcs(self) -> Optional[Literal["git"]]:
        """Get VCS system used by the template, if any."""
        if get_repo(self.url):
            return "git"

Expected behavior
Print "git" instead.

Screenshots

System (please complete the following information):

• pytkdocs mkdocstrings/pytkdocs@4052eab
• Python version: 3.9
• OS: Linux

Additional context
Observable on copier-org/copier@76018a7 from copier-org/copier#314.

[pawamoy]

Thanks for the report. I didn't have the chance to play with Literal yet, I'll add tests and fix that 🙂
However it is more a mkdocstrings issue rather than a pytkdocs one. (EDIT: moved to mkdocstrings repo)

[yajo]

I'm giving you a lot of work for just one PR 😅

[pawamoy]

Haha it's fine 😄 thanks a lot for reporting all these!

[pawamoy]

Probably this should do:

--- a/src/mkdocstrings/templates/python/material/attribute.html
+++ b/src/mkdocstrings/templates/python/material/attribute.html
@@ -23,7 +23,7 @@
 
         {% filter highlight(language="python", inline=True) %}
           {% if show_full_path %}{{ attribute.path }}{% else %}{{ attribute.name }}{% endif %}
-          {% if attribute.type %}: {{ attribute.type }}{% endif %}
+          {% if attribute.type %}: {{ attribute.type|safe }}{% endif %}
         {% endfilter %}
 
         {% with properties = attribute.properties %}