On: Challenging projects every programmer should try

[userbinator]

I suspect that slowness is due to something else; remember that computers these days can execute a few billion instructions per second.

I've written code to do word wrapping, and it was surprising how fast it was. Line numbers are similarly complex.

[srtjstjsj → userbinator]

We expect modern computers to do something more than just run a full-screen text editor.