I use my own text editor too, written using my own programming language. Fortunately Operating Systems suit my needs and I won't have to write my own OS ;-)

I use my own editor too. I modified an existing editor to my own needs. But I do use VSC as well for multi file projects. My editor can load images as well and has a scripting language to manipulate images. I primarily use it to edit my website, which is a static website in bare HTML. It also has some 'browser' functions in the sense that F5 opens a link including jumping to an anker if there is one in the link. It does have colour coding for HTML that also checks for matching tags.

Didn't even link it. :(

I use my own text editor too.

Sometimes I get surprise questions from my friends whenever they see my screen. “What’s that?” “That’s my own text editor!”