[octoberfranklin]

vim with folding

Still the best tree editor I've found. I left emacs for it!

[blackbear_]

Emacs has folding too, so that cannot be the only reason..?

[octoberfranklin]

Yeah emacs has like eleventeen different folding modes. That's the problem.

Vim has folding as a basic feature of the editor binary, not some aftermarket script. So editing operations on folded regions always do what you expect.