Nvim-R improves Vim's support to edit R scripts.

Please, read sections Instalation and Use of the documentation.

The diagram below shows how the communication between Vim/Neovim and R works.

The black arrows represent all commands that you trigger in the editor and that you can see being pasted into R Console. There are three different ways of sending the commands to R Console:

• When running R in a Neovim built-in terminal, the function chansend() is used to send code to R Console.

• When running R in an external terminal emulator, Tmux is used to send commands to R Console.

• On the Windows operating system, Nvim-R can send a message to R (nvimcom) which forwards the command to R Console.

The R package nvimcom includes the application nvimrserver which is never used by R itself, but is run as a Vim/Neovim's job. That is, the communication between the nvimrserver and Vim/Neovim is through the nvimrserver standard input and output (green arrows). The nvimrserver application runs a TCP server. When nvimcom is loaded, it immediately starts a TCP client that connects to nvimrserver (red arrows).

Some commands that you trigger are not pasted into R Console and do not output anything in R Console; their results are seen in the editor itself. These are the commands to do omnicompletion (of names of objects and function arguments), start and manipulate the Object Browser (\ro, \r= and \r-), call R help (\rh or :Rhelp), insert the output of an R command (:Rinsert) and format selected text (:Rformat).

When new objects are created or new libraries are loaded, nvimcom sends messages that tell the editor to update the Object Browser, update the syntax highlight to include newly loaded libraries and open the PDF output after knitting an Rnoweb file and compiling the LaTeX result. Most of the information is transmitted through the TCP connection to the nvimrserver, but temporary files are used in a few cases.

• cmp-nvim-r: nvim-cmp source using Nvim-R as backend.

• languageserver: a language server for R.

• colorout: a package to colorize R's output.