You raise an interesting point: what you're editing has a big impact on the effectiveness of the editor you're using. When I first learned vi, I kind of hated

You raise an interesting point: what you're editing has a big impact on the effectiveness of the editor you're using. When I first learned vi, I kind of hated it because I was editing code on an ancient system that used a COBOL-like language, in which most things were in upper case. Because vi's commands are all case sensitive, combined with the fact that I used capslock a lot for coding, it was kind of a pain. Also this language did not use a c-like syntax with punctuation, it instead used a lot of english words. Later when I switched to editing C source code with vi, suddenly vi's quirks and methods of operation become far, far more productive than they were using vi.