I am also using the plugin for vim posted by jalvesaq. It is working well, and I appreciate your work. One issue I have had with it is the scrolling with using help() in R. Ordinarily R will allow vim keybindings to be used for scrolling a help file (for instance when using the R command "help(density)"). When I use the vim R plugin, however, neither vim keybindings nor arrow keys nor page up/page down will work to scroll help files in R. I am using gnome-terminal rather than xterm, if that makes any difference, with the latest version of the R plugin.