html.nanorc corrupts lines containing emoji

[ghost]

In this example, you can see that:
2020 becomes >202
</tr> becomes </tr>>

nano without html.nanorc:

with html.nanorc

Root cause seems to be the handling of emoji. I created a tr without one and it displays fine:

You can see in the image that the date isn't corrupted and no trailing ">" inserted.

Now that I've tasted syntax highlighting I can't go back. I hope this is fixable :) Thanks for the effort! Source code attached.
index.html.txt

[davidhcefx]

That looks like a GNU Nano problem instead of a highlighting problem.
Anyway, what's your platform? I can't replicate on Ubuntu 18.04 with nano 6.2.

[ghost]

Apologies for the delay. I believe it was macOS I was on at the time.