Skip char and string literals when highlighting comments

[cascade256]

The comment highlighting appears to take priority over string and char literals, leading to syntax highlighting like this:

These changes should make it skip string and char literals when scanning for comments.

[Jarred-Sumner]

nice

[nektro]

can you post a screenshot of what it looks like with these changes

[cascade256]

Yep! Here is what it looks like:

[SuperAuguste]

Thanks!