I think 80 characters is getting a bit narrow, but some people like to be able to open several files (e.g. the code and the tests) in VIM or Emacs, with the bu

I think 80 characters is getting a bit narrow, but some people like to be able to open several files (e.g. the code and the tests) in VIM or Emacs, with the buffers vertically arranged next to each other.