/prog/ challenge: Write a text editor

The best quality editor you can fit a post, not using external libraries. Only include default headers/imports/libraries.
Programs will be judged by their array of features, stability of operation and memory use.

>>29
shitty networking support
Nonsensical complaint. Networking shouldn't be part of the standard library.

no effective memory safty checking
Not a library issue. Arguably not even a C issue, but a compiler and OS issue.

most of all error prone IO
I'd love to hear you elaborate, but I have a feeling it's just going to be bullshit.

The only legitimate complaint is nul-terminated strings. That was a terrible idea.