Neomake is a plugin for Vim/Neovim to asynchronously run programs.

You can use it instead of the built-in :make command (since it can pick up your 'makeprg' setting), but its focus is on providing an extra layer of makers based on the current file (type) or project. Its origin is a proof-of-concept for Syntastic to be asynchronous.

Requirements

Neovim

With Neovim any release will do (after 0.0.0-alpha+201503292107).

Vim

The minimal Vim version supported by Neomake is 7.4.503 (although if you don't use g:neomake_logfile older versions will probably work fine as well).

You need Vim 8.0.0027 or later for asynchronous features.

Installation

Use your preferred installation method for Vim plugins.

With vim-plug that would mean to add the following to your vimrc:

Plug 'neomake/neomake'

Setup

If you want to run Neomake automatically (in file mode), you can configure it in your vimrc by using neomake#configure#automake, e.g. by picking one of:

" When writing a buffer (no delay).
call neomake#configure#automake('w')
" When writing a buffer (no delay), and on normal mode changes (after 750ms).
call neomake#configure#automake('nw', 750)
" When reading a buffer (after 1s), and when writing (no delay).
call neomake#configure#automake('rw', 1000)
" Full config: when writing or reading a buffer, and on changes in insert and
" normal mode (after 500ms; no delay when writing).
call neomake#configure#automake('nrwi', 500)

(Any function calls like these need to come after indicating the end of plugins to your plugin manager, e.g. after call plug#end() with vim-plug.)

Advanced setup

The author liked to use the following, which uses different modes based on if your laptop runs on battery (for MacOS or Linux):

function! MyOnBattery()
  if has('macunix')
    return match(system('pmset -g batt'), "Now drawing from 'Battery Power'") != -1
  elseif has('unix')
    return readfile('/sys/class/power_supply/AC/online') == ['0']
  endif
  return 0
endfunction

if MyOnBattery()
  call neomake#configure#automake('w')
else
  call neomake#configure#automake('nw', 1000)
endif

See :help neomake-automake (in doc/neomake.txt) for more information, e.g. how to configure it based on certain autocommands explicitly, and for details about which events get used for the different string-based modes.

Usage

When calling :Neomake manually (or automatically through neomake#configure#automake (see above)) it will populate the window's location list with any issues that get reported by the maker(s).

You can then navigate them using the built-in methods like :lwindow / :lopen (to view the list) and :lprev / :lnext to go back and forth.

You can configure Neomake to open the list automatically:

let g:neomake_open_list = 2

Please refer to :help neomake.txt for more details on configuration.

Maker types

There are two types of makers: file makers (acting on the current buffer) and project makers (acting globally).

You invoke file makers using :Neomake, and project makers using :Neomake!.

See :help neomake.txt for more details.

Manually run a maker

You can run a specific maker on the current file by specifying the maker's name, e.g. :Neomake jshint (you can use Vim's completion here to complete maker names).

Default makers

For a list of default makers please see the Makers page in the wiki.

Contributing

If you find this plugin useful, please contribute your maker recipes to the repository! Check out autoload/neomake/makers/**/*.vim for existing makers.

This is a community driven project, and maintainers are wanted. Please contact @blueyed if you are interested. You should have a good profile of issue triaging and PRs on this repo already.

Hacking / Testing

We are using Vader for our tests.

Logging

Set let g:neomake_logfile = '/tmp/neomake.log' (dynamically or in your vimrc) to enable debug logging to the given file. From Neomake's source tree you can then run make tail_log, which will color the output and pipe it into less, which folds long lines by default and will follow the output (like tail -f). You can use Ctrl-C to interrupt for scrolling etc, and then F to follow again.

Running tests

Run all tests against your local Neovim and Vim

make test

Run a specific test file

make tests/integration.vader

Run some specific tests for Vim

make testvim VADER_ARGS=tests/integration.vader

Dockerized tests

The docker_test target runs tests for a specific Vim version. See Dockerfile.tests for the Vim versions provided in the Docker image.

The image for this gets pulled from Docker Hub via neomake/vims-for-tests.

NOTE: the Docker image used for tests does not include (different versions) of Neovim at the moment.

Run all tests for Vim 8.0.586

make docker_test DOCKER_VIM=vim-8.0.586

Run all tests against all Vims in the Docker image

make docker_test_all

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