(a) Inside a directory in your $PATH (say, ~/bin), create a file called ‘_man2vim’, containing the following:

#!/bin/sh col -b | vim -c ‘set ft=man nomod’ -

Make this file executable.

(b) Wherever it is you like to add aliases (be it .bashrc, .bash_alises, .zshrc or anything else), add the following alias:

alias man=’man –pager=_man2vim’

(c) Voilà.

Two comments: A. You might want to use “nmap ” instead of “nmap”. B. This breaks man page autocompletion – instead of being offered man pages, you’re offered files in the current directory (as you would be for vim). Any ideas how to fix this?