I was on the same boat many years ago, when I co-founded Monodevelop, a port of #SharpDevelop to Mono. I started by porting the text component, which was the co

I was on the same boat many years ago, when I co-founded Monodevelop, a port of #SharpDevelop to Mono. I started by porting the text component, which was the core of the text editor itself. There was a book explaining the implementation of this IDE: https://www.amazon.com/Dissecting-C-Application-Inside-SharpDevelop/dp/1861008171/ref=mp_s_a_1_2?crid=2LD87802QQDY0&keywords=sharpdevelop+dissecting+christian+holm&qid=1641838236&sprefix=sharpdevelop+dissecting+christian+holm%2Caps%2C179&sr=8-2 https://www.amazon.com/Dissecting-C-Application-Inside-Sharp... I think you might find it interesting for what you are trying to do, even though it's a bit old.