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https://github.com/carlocab/tmux-nvr

A tmux plugin for using session-specific Neovim instances with neovim-remote
https://github.com/carlocab/tmux-nvr

neovim nvim tmux tmux-plugin

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A tmux plugin for using session-specific Neovim instances with neovim-remote

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# tmux-nvr

A [tmux](https://tmux.github.io) plugin for using session-specific

[Neovim](https://neovim.io) instances with

[neovim-remote](https://github.com/mhinz/neovim-remote)



---



neovim-remote allows you to control nvim processes from the shell using `nvr`.

You might then want `nvr` to control nvim processes in your current tmux session,

rather than another one. This requires setting a unique `NVIM_LISTEN_ADDRESS` for

each of your sessions.



**tmux-nvr** automates the creation of session-specific values for

`NVIM_LISTEN_ADDRESS` so that `nvr` will always refer to an nvim process in your

current session.



tmux-nvr also provides `nvr-tmux`, an executable which automates switching to

the nvim process controlled by `nvr`.



## Requirements



- tmux 3.0+

    * `nvr-tmux` requires tmux 3.2+

- Neovim

- neovim-remote



## Installation Using TPM



Install tmux-nvr using the [tmux plugin manager](https://github.com/tmux-plugins/tpm).

Add the following line to your `tmux.conf`.



    set -g @plugin 'carlocab/tmux-nvr'



Press `prefix` + I (capital i, as in **I**nstall) to fetch the plugin.



Next, add this snippet to your `zshrc` or `bashrc`.



```bash

if [ -n "$TMUX" ]; then

    eval "$(tmux show-environment -s NVIM_LISTEN_ADDRESS 2> /dev/null)"

else

    export NVIM_LISTEN_ADDRESS=/tmp/nvimsocket

fi

```



The `else` statement is optional. Nevertheless, it is a good idea to include it.

`nvr` is known to produce errors [when it is used without this being set](https://github.com/mhinz/neovim-remote/issues/134#issuecomment-565840645). You may wish to check the permissions of `/tmp` if you

are on a multi-user system.



### Optional: Zsh Plugin Installation with OhMyZsh



If you use [OhMyZsh](https://ohmyz.sh), instead of using the snippet above, you

can use the packaged zsh plugin. First, symlink the tmux-nvr directory into

`$ZSH_CUSTOM` using



    ln -s ~/.tmux/plugins/tmux-nvr ~ZSH_CUSTOM/plugins



Your tmux plugins may be installed in a different location. One can

typically verify this location using `echo $TMUX_PLUGIN_MANAGER_PATH`.



Finally, add `tmux-nvr` to the `plugins` array in your `zshrc`.



    plugins=($plugins tmux-nvr)



The plugin will also add `nvr-tmux` to your `PATH`, if your version of tmux is

new enough.



## Manual Installation



Clone this repository using



    git clone https://github.com/carlocab/tmux-nvr ~/path/to/tmux-nvr



Add the following line to your `tmux.conf`.



    run-shell ~/path/to/tmux-nvr/nvr.tmux



Then, follow the instructions for your `*rc` files in the previous

section.



## Usage



It should just work.



An earlier version of tmux-nvr required setting a `@tmux-nvr-hook-index` option

to avoid overriding pre-defined `session-created` hooks. This is no longer

necessary.



## nvr-tmux



`nvr-tmux` is an executable found in the `bin` directory. It automates

switching to `nvim` whenever there is an existing instance of `nvim` connected

to `NVIM_LISTEN_ADDRESS`.



It passes all its arguments to `nvr`, so it can be used in exactly the same way.

For example, to edit a file in an existing instance of `nvim` using `nvr`, you

would run



    nvr file.txt



This opens `file.txt` in `nvim`, but leaves you in the shell you called `nvr`

from. To immediately switch the current pane to `nvim` as it opens the file, run



    nvr-tmux file.txt



`nvr-tmux` can serve as a drop-in replacement for `nvr`, even if you are not

running tmux.



To use `nvr-tmux`, either add the `bin` directory to your `PATH`, or symlink

`bin/nvr-tmux` to a directory in your `PATH`. This is done automatically by the

packaged zsh plugin.



**nvr-tmux requires tmux 3.2 or above.**



### Why not use a shell function?



`nvr-tmux` has been most useful for me as a git editor, as described in the

[neovim-remote README](https://github.com/mhinz/neovim-remote#typical-use-cases).

`git` does not recognise shell functions as editors, so any shell function you

use for this purpose will need to be turned into an executable script.



I've saved you the trouble of doing that with `nvr-tmux`.



## Miscellaneous



For bug reports or questions, please file an issue [here](https://github.com/carlocab/tmux-nvr/issues).



tmux-nvr may behave unpredictably if you script the creation of several tmux

sessions at a time. If this causes problems, please file an issue using the

link above.



### Wishlist

Here are improvements I hope to be able to work on (in no particular order):

1. Window-specific nvim instances

2. `nvr-tmux` backwards-compatibility

3. Simpler installation procedure

4. Vim-compatibility

5. tmux-nvr usage demo



Pull requests are welcome.



## Related Projects



https://github.com/daplay/tmux_nvr