Hi. First, thank you for the neat editor!

I have found an issue with syntax highlighter, when sometimes it sets the whole view to "comment" under some circumstances.

To reproduce:

The file to open:
https://github.com/skontar/update-checker/blob/a810f6b71449dbbc03d033fc598f48151892a799/update_checker.py

The terminal size:
80x24 (xfce4-terminal)

Scroll so these lines are the only visible:
83-104

See the screenshot for details.