*vimux.txt*   easily interact with tmux

                                  Vimux
                   effortless vim and tmux interaction

==============================================================================
CONTENTS                                                        *vimux-contents*

    1. About............................ |VimuxAbout|
    2. Usage ........................... |VimuxUsage|
      2.1 .............................. |VimuxPromptCommand|
      2.2 .............................. |VimuxRunLastCommand|
      2.3 .............................. |VimuxInspectRunner|
      2.4 .............................. |VimuxCloseRunner|
      2.5 .............................. |VimuxInterruptRunner|
      2.6 .............................. |VimuxClearTerminalScreen|
      2.7 .............................. |VimuxClearRunnerHistory|
      2.8 .............................. |VimuxZoomRunner|
      2.9 .............................. |VimuxRunCommandInDir|
    3. Misc ............................ |VimuxMisc|
      3.1 Example Keybinding............ |VimuxExampleKeybinding|
      3.2 Tslime Replacement............ |VimuxTslimeReplacement|
    4. Configuration ................... |VimuxConfiguration|


==============================================================================
ABOUT (1)                                                           *VimuxAbout*

Vimux -- Easily interact with tmux from vim.

Vimux was originally inspired by tslime.vim [1], a plugin that lets you send
input to tmux. While tslime.vim works well, it wasn't optimized for the use
case of having a smaller tmux pane used to run tests or play with a REPL. The
goal of Vimux is to make interacting with tmux from vim effortless.

By default, when you call `VimuxRunCommand` vimux will create a 20% tall
horizontal pane under your current tmux pane and execute a command in it
without losing the focus on vim. Once that pane exists, whenever you call
`VimuxRunCommand` again the command will be executed in that pane. A frequent
use case  is wanting to rerun commands over and over. An example of this is
running the current file through rspec. Rather than typing that over and over
`VimuxRunLastCommand` will execute the last command called with
`VimuxRunCommand`.

Other auxiliary functions and the ones talked about above can be found bellow
with full descriptions and example key bindings for your vimrc.

[1] https://github.com/jgdavey/tslime.vim/network


==============================================================================
USAGE (2)                                                           *VimuxUsage*

The function VimuxRunCommand(command) is the core of Vimux. It will
create a split pane in the current window and run the passed command in it.
>
    :call VimuxRunCommand("ls")
<
This will run the command in a split pane without losing focus of vim. If the
command takes a long time to return you can continue to use vim while the
process finishes and will see the output in the pane when it's finished.

Furthermore there are several handy commands all starting with 'Vimux':
  - |VimuxRunCommand|
  - |VimuxSendText|
  - |VimuxSendKeys|
  - |VimuxOpenRunner|
  - |VimuxRunLastCommand|
  - |VimuxCloseRunner|
  - |VimuxInspectRunner|
  - |VimuxInterruptRunner|
  - |VimuxPromptCommand|
  - |VimuxClearTerminalScreen|
  - |VimuxClearRunnerHistory|
  - |VimuxZoomRunner|
  - |VimuxRunCommandInDir|

------------------------------------------------------------------------------
                                                               *VimuxRunCommand*
VimuxRunCommand~

Run a system command in a small horizontal split bellow
the current pane vim is in. You can optionally pass a second argument to stop
vimux from automatically sending a return after the command.
>
 " Run the current file with rspec
 map <Leader>rb :call VimuxRunCommand("clear; rspec " . bufname("%"))<CR>
 " Run command without sending a return
 map <Leader>rq :call VimuxRunCommand("clear; rspec " . bufname("%"), 0)<CR>
<

------------------------------------------------------------------------------
                                                               *VimuxSendText*
VimuxSendText~

Send raw text to the runner pane. This command will not open a new pane if one
does not already exist. You will need to use |VimuxOpenRunner| to do this. This
command can be used to interact with REPLs or other interactive terminal
programs that are not shells.


------------------------------------------------------------------------------
                                                               *VimuxSendKeys*
VimuxSendKeys~

Send keys to the runner pane. This command will not open a new pane if one
does not already exist. You will need to use |VimuxOpenRunner| to do this. You
can use this command to send keys such as "Enter" or "C-c" to the runner pane.

------------------------------------------------------------------------------
                                                               *VimuxOpenRunner*
VimuxOpenRunner~

This will either open a new pane or use the nearest pane and set it as the
vimux runner pane for the other vimux commands. You can control if this command
uses the nearest pane or always creates a new one with g:|VimuxUseNearest|

------------------------------------------------------------------------------
                                                            *VimuxPromptCommand*
VimuxPromptCommand~

Prompt for a command and run it in a small horizontal split bellow the current
pane. A parameter can be supplied to predefine a command or a part of the
command which can be edited in the prompt.
>
 " Prompt for a command to run map
 map <Leader>vp :VimuxPromptCommand<CR>
 map <Leader>vm :VimuxPromptCommand("make ")<CR>
<

------------------------------------------------------------------------------
                                                           *VimuxRunLastCommand*
VimuxRunLastCommand~

Run the last command executed by `VimuxRunCommand`
>
 " Run last command executed by VimuxRunCommand
 map <Leader>vl :VimuxRunLastCommand<CR>
<

------------------------------------------------------------------------------
                                                            *VimuxInspectRunner*
VimuxInspectRunner~

Move into the tmux runner pane created by `VimuxRunCommand` and enter copy
pmode (scroll mode).
>
 " Inspect runner pane map
 map <Leader>vi :VimuxInspectRunner<CR>
<

------------------------------------------------------------------------------
                                                            *VimuxCloseRunner*
VimuxCloseRunner~

Close the tmux runner created by `VimuxRunCommand`
>
 " Close vim tmux runner opened by VimuxRunCommand
 map <Leader>vq :VimuxCloseRunner<CR>
<

------------------------------------------------------------------------------
                                                          *VimuxInterruptRunner*
VimuxInterruptRunner~

Interrupt any command that is running inside the
runner pane.
>
 " Interrupt any command running in the runner pane map
 map <Leader>vs :VimuxInterruptRunner<CR>
<


------------------------------------------------------------------------------
                                                          *VimuxClearTerminalScreen*
VimuxClearTerminalScreen~

Clear the terminal screen of the runner pane.
>
 " Clear the terminal screen of the runner pane.
 map <Leader>v<C-l> :VimuxClearTerminalScreen<CR>
<

------------------------------------------------------------------------------
                                                          *VimuxClearRunnerHistory*
VimuxClearRunnerHistory~

Clear the tmux history of the runner pane for when
you enter tmux scroll mode inside the runner pane.
>
 " Clear the tmux history of the runner pane
 map <Leader>vc :VimuxClearRunnerHistory<CR>
<

------------------------------------------------------------------------------
                                                          *VimuxZoomRunner*
VimuxZoomRunner~

Zoom the runner pane. Once its zoomed, you will need
to use tmux "<bind-key> z" to restore the runner pane.
Zoom requires tmux version >= 1.8
>

 " Zoom the tmux runner page
 map <Leader>vz :VimuxZoomRunner<CR>
<

------------------------------------------------------------------------------
                                                        *VimuxRunCommandInDir*
VimuxRunCommandInDir~

Runs the specified command inside the directory of
the currently opened file. Takes two arguments. command and inFile

command: The command to run
inFile: If 1 the filename will be appended to the command
>

 " Compile currently opened latex file to pdf
 autocmd Filetype tex nnoremap <buffer> <Leader>rr :update<Bar>:call VimuxRunCommandInDir('latexmk -pdf', 1)<CR>
 " Push the repository of the currently opened file
 nnoremap <leader>gp :call VimuxRunCommandInDir("git push", 0)<CR>
<

==============================================================================
MISC (3)                                                             *VimuxMisc*

------------------------------------------------------------------------------
                                                        *VimuxExampleKeybinding*
Full Keybind Example~

>
 " Run the current file with rspec
 map <Leader>rb :call VimuxRunCommand("clear; rspec " . bufname("%"))<CR>

 " Prompt for a command to run
 map <Leader>vp :VimuxPromptCommand<CR>

 " Run last command executed by VimuxRunCommand
 map <Leader>vl :VimuxRunLastCommand<CR>

 " Inspect runner pane
 map <Leader>vi :VimuxInspectRunner<CR>

 " Close vim tmux runner opened by VimuxRunCommand
 map <Leader>vq :VimuxCloseRunner<CR>

 " Interrupt any command running in the runner pane
 map <Leader>vx :VimuxInterruptRunner<CR>

 " Zoom the runner pane (use <bind-key> z to restore runner pane)
 map <Leader>vz :call VimuxZoomRunner()<CR>

 " Clear the terminal screen of the runner pane.
 map <Leader>v<C-l> :VimuxClearTerminalScreen<CR>
>

------------------------------------------------------------------------------
                                                        *VimuxTslimeReplacement*
Vimux as tslime replacement~

Here is how to use vimux to send code to a REPL. This is similar to tslime.
First, add some helpful mappings.

>
 function! VimuxSlime()
  call VimuxRunCommand(@v, 0)
 endfunction

 " If text is selected, save it in the v buffer and send that buffer it to tmux
 vmap <LocalLeader>vs "vy :call VimuxSlime()<CR>

 " Select current paragraph and send it to tmux
 nmap <LocalLeader>vs vip<LocalLeader>vs<CR>
<

Now, open a clojure file. Let's say your leader is backslash (\). Type \vp,
and then type lein repl at the prompt. This opens a tmux split running a REPL.
Then, select text or put the cursor on a function and type \vs. This will send
it to the REPL and evaluate it. The reason we pass `0` to `VimuxRunCommand`
is to stop the normal return that is sent to the runner pane and use our own
new line so the clojure REPL will evaluate the selected text without adding an
extra return. Thanks to @trptcolin for discovering this issue.


==============================================================================
CONFIGURATION (4)                                           *VimuxConfiguration*

You can configure Vimux as follows. Note that all occurances of global
variables `g:Vimux...` may also be set using buffer variables `b:Vimux...` to
change the behavior of Vimux in just the current buffer.

------------------------------------------------------------------------------
                                                     *VimuxConfiguration_height*
4.1 g:VimuxHeight~

The part of the screen the split pane Vimux will spawn should take up. This
option accepts both a number of lines/columns or a percentage.
>
  let g:VimuxHeight = "40"
<
Default: "20%"

------------------------------------------------------------------------------
                                                *VimuxConfiguration_orientation*
4.2 g:VimuxOrientation~

The default orientation of the split tmux pane. This tells tmux to make the
pane either vertically or horizontally, which is backward from how Vim handles
creating splits.
>
  let g:VimuxOrientation = "h"
<
Options:
  "v": vertical
  "h": horizontal

Default: "v"

------------------------------------------------------------------------------
                                                *VimuxConfiguration_use_nearest*
4.3 g:VimuxUseNearest~

Use existing pane or window (not used by vim) if found instead of running
split-window.
>
  let g:VimuxUseNearest = 1
<
Default: 1

------------------------------------------------------------------------------
                                             *VimuxConfiguration_reset_sequence*
4.4 g:VimuxResetSequence~

The keys sent to the runner pane before running a command.

When vimux runs a tmux command, it first makes sure that the runner is not in
copy mode by running `copy-mode -q` on the runner. This sequence is then sent
to make sure that the runner is ready to receive input.

The default sends `C-u` to clear the line.
>
  let g:VimuxResetSequence = ""
<
Default: "C-u"

------------------------------------------------------------------------------
                                                             *VimuxPromptString*
4.5 g:VimuxPromptString~

The string presented in the vim command line when Vimux is invoked. Be sure
to put a space at the end of the string to allow for distinction between
the prompt and your input.
>
  let g:VimuxPromptString = ""
<
Default: "Command? "

------------------------------------------------------------------------------
                                                             *VimuxRunnerType*
4.6 g:VimuxRunnerType~

The type of view object Vimux should use for the runner. For reference, a
tmux session is a group of windows, and a window is a layout of panes.
>
  let g:VimuxRunnerType = "window"
<
Options:
  "pane": for panes
  "window": for windows

Default: "pane"

------------------------------------------------------------------------------
                                                             *VimuxRunnerName*
4.7 g:VimuxRunnerName~

Setting the name for the runner. Works for panes and windows. This makes the
VimuxRunner reusable between sessions. Caveat is, all your instances (in the
same session/window) use the same window.

Caution: It is probably best not to mix this with |VimuxCloseOnExit|.
>
  let g:VimuxRunnerName = "vimuxout"
<
Default: ""

------------------------------------------------------------------------------
                                                              *VimuxTmuxCommand*
4.8 g:VimuxTmuxCommand~

The command that Vimux runs when it calls out to tmux. It may be useful to
redefine this if you're using something like tmate.
>
  let g:VimuxTmuxCommand = "tmate"
<
Default: "tmux"

------------------------------------------------------------------------------
                                                            *VimuxOpenExtraArgs*
4.9 g:VimuxOpenExtraArgs~

Allows addtional arguments to be passed to the tmux command that opens the
runner. Make sure that the arguments specified are valid depending on whether
you're using panes or windows, and your version of tmux.
>
  let g:VimuxOpenExtraArgs = "-c #{pane_current_path}"
<
Default: ""

------------------------------------------------------------------------------
                                                            *VimuxExpandCommand*
4.10 g:VimuxExpandCommand~

Should the command given at the prompt via VimuxPromptCommand be expanded
using expand(). 1 to expand the string.

Unfortunately expand() only expands % (etc.) if the string starts with that
character. So the command is split at spaces and then rejoined after
expansion. With this simple approach things like "%:h/test.xml" are not
possible.
>
  let g:VimuxExpandCommand = 1
<
Default: 0

------------------------------------------------------------------------------
                                                            *VimuxCloseOnExit*
4.11 g:VimuxCloseOnExit~

Set this option to `1` or `v:true` to tell vimux to close the runner when you quit
vim.

Caution: It is probably best not to mix this with |VimuxRunnerName|.
>
  let g:VimuxCloseOnExit = 1
<
Default: 0

------------------------------------------------------------------------------
                                                            *VimuxCommandShell*
4.12 g:VimuxCommandShell~

Set this option to `1` or `v:true` to enable shell completion in
VimuxPromptCommand
Set this option to `0` or `v:false` to enable vim command editing in
VimuxPromptCommand

Enabling shell completion blocks the ability to use up-arrow to cycle through
previously-run commands in VimuxPromptCommand.
>
  let g:VimuxCommandShell = 0
<
Default: 1

------------------------------------------------------------------------------
                                                            *VimuxRunnerQuery*
4.13 g:VimuxRunnerQuery~

Set this option to define a query to use for looking up an existing runner
pane or window when initiating Vimux. Uses the tmux syntax for the target-pane
and target-window command arguments. (See the man page for tmux). It must be a
dictionary containing up to two keys, "pane" and "window", defining the query
to use for the respective runner types.

If no key exists for the current runner type, the search for an existing
runner falls back to the `VimuxUseNearest` option (and the related
`VimuxRunnerName`). If that option is false or either command fails, a new
runner is created instead, positioned according to `VimuxOrientation`.
>
  let g:VimuxRunnerQuery = {
            \ 'pane': '{down-of}',
            \ 'window': 'vimux',
            \}
<
Default: {}

------------------------------------------------------------------------------
                                                            *VimuxDebug*
4.13 g:VimuxDebug~

If you're having trouble with vimux, set this option to get vimux to pass each
tmux command to |echomsg| before running it.
>
  let g:VimuxDebug = v:true
<
Default: v:false

==============================================================================
vim:tw=78:ts=2:sw=2:expandtab:ft=help:norl: