[Enhancement] Improve performance, when huge block of code is edited

[subhamayd2]

When I am editing a huge block of code, the editor feels a bit sluggish.
This is probably happening because on each change, the whole block of code is being parsed for highlighting.
Is there any way that can improve the performance? I was thinking, if the parsing can be debounced somehow, that might improve the performance.

[BertrandBev]

Yep, we could also perform local highlighting, since most of the time local changes don't affect the rest of the document!

[subhamayd2]

Agreed. Something like, only parsing the line that is currently being edited.

[alberteije]

Any improvement on this? Looks like we have same situation until now.