*neoformat.txt*	A Neovim plugin for formatting.

CONTENTS					*neoformat-contents*

Introduction		|neoformat-introduction|
Install			|neoformat-install|
Usage			|neoformat-usage|
Managing Undo History	|neoformat-managing-undo-history|
Supported Filetypes	|neoformat-supported-filetypes|

==============================================================================
INTRODUCTION					*neoformat-introduction*

A [Neovim](https://neovim.io) and Vim8 plugin for formatting code.

*Neoformat* uses a variety of formatters for many filetypes. Currently, Neoformat
will run a formatter using the current buffer data, and on success it will
update the current buffer with the formatted text. On a formatter failure,
Neoformat will try the next formatter defined for the filetype.

By using `getbufline()` to read from the current buffer instead of file,
Neoformat is able to format your buffer without you having to `:w` your file first.
Also, by using `setline()`, marks, jumps, etc. are all maintained after formatting.

Neoformat supports both sending buffer data to formatters via stdin, and also
writing buffer data to `/tmp/` for formatters to read that do not support input
via stdin.

==============================================================================
INSTALL						*neoformat-install*

Install with [vim-plug](https://github.com/junegunn/vim-plug)
>
	Plug 'sbdchd/neoformat'
<
==============================================================================
USAGE						*neoformat-usage*

Format the entire buffer, or visual selection of the buffer
>
	:Neoformat

<Or specify a certain formatter (must be defined for the current filetype)
>
	:Neoformat jsbeautify

Or format a visual selection of code in a different filetype

*Note:* you must use a ! and pass the filetype of the selection

>
	:Neoformat! python
>
You can also pass a formatter to use

>
	:Neoformat! python yapf
<

Or perhaps run a formatter on save

>
    augroup fmt
      autocmd!
      autocmd BufWritePre * undojoin | Neoformat
    augroup END
<

The |undojoin| command will put changes made by Neoformat into the same
|undo-block| with the latest preceding change. See
|neoformat-managing-undo-history|.


==============================================================================
CURRENT LIMITATION(S)				*neoformat-limitations*

If a formatter is either not configured to use `stdin`, or is not able to read
from `stdin`, then buffer data will be written to a file in `/tmp/neoformat/`,
where the formatter will then read from

==============================================================================
CONFIG						*neoformat-config*

Define custom formatters.

Options:

| `exe`       | the name the formatter executable in the path | required
| `args`      | list of arguments | default: [] | optional
| `replace`   | overwrite the file, instead of updating the buffer | default: 0 | optional
| `stdin`     | send data to the stdin of the formatter | default 0 | optional
| `stderr`    | used to specify whether stderr output should be read along with
	     the stdin, otherwise redirects stderr to `stderr.log` file in neoformat's
	     temporary directory | default 0 | optional
| `no_append` | do not append the `path` of the file to the formatter command,
	     used when the `path` is in the middle of a command | default: 0 |
	     optional
| `env`       | list of environment variables to prepend to the command | default: [] | optional

| `valid_exit_codes` | list of valid exit codes for formatters who do not respect common unix practices | \[0] | optional

Example:

Define custom formatters.
>
    let g:neoformat_python_autopep8 = {
            \ 'exe': 'autopep8',
            \ 'args': ['-s 4', '-E'],
            \ 'replace': 1 " replace the file, instead of updating buffer (default: 0),
            \ 'stdin': 1, " send data to stdin of formatter (default: 0)
            \ 'valid_exit_codes': [0, 23],
            \ 'no_append': 1,
            \ }

    let g:neoformat_enabled_python = ['autopep8']
<
Have Neoformat use &formatprg as a formatter
>
    let g:neoformat_try_formatprg = 1
<
Enable basic formatting when a filetype is not found. Disabled by default.
>
    " Enable alignment globally
    let g:neoformat_basic_format_align = 1

    " Enable tab to spaces conversion globally
    let g:neoformat_basic_format_retab = 1

    " Enable trimmming of trailing whitespace globally
    let g:neoformat_basic_format_trim = 1

Run all enabled formatters (by default Neoformat stops after the first
formatter succeeds)

    let g:neoformat_run_all_formatters = 1

Above options can be activated or deactivated per buffer. For example:

    " runs all formatters for current buffer without tab to spaces conversion
    let b:neoformat_run_all_formatters = 1
    let b:neoformat_basic_format_retab = 0

Have Neoformat only msg when there is an error
>
    let g:neoformat_only_msg_on_error = 1
<
When debugging, you can enable either of following variables for extra logging.
>
    let g:neoformat_verbose = 1 " only affects the verbosity of Neoformat
    " Or
    let &verbose            = 1 " also increases verbosity of the editor as a whole
<
==============================================================================
ADDING A NEW FORMATTER				*neoformat-adding-new-formatter*

Note: you should replace everything `{{ }}` accordingly

1. Create a file in `autoload/neoformat/formatters/{{ filetype }}.vim` if it does not
   already exist for your filetype.

2. Follow the following format

See Config above for options
>
    function! neoformat#formatters#{{ filetype }}#enabled() abort
	return ['{{ formatter name }}', '{{ other formatter name for filetype }}']
    endfunction

    function! neoformat#formatters#{{ filetype }}#{{ formatter name }}() abort
	return {
	    \ 'exe': '{{ formatter name }}',
	    \ 'args': ['-s 4', '-q'],
	    \ 'stdin': 1
	    \ }
    endfunction

    function! neoformat#formatters#{{ filetype }}#{{ other formatter name }}() abort
      return {'exe': {{ other formatter name }}
    endfunction
<

==============================================================================
MANAGING UNDO HISTORY			*neoformat-managing-undo-history*

If you use an |autocmd| to run Neoformat on save, and you have your editor
configured to save automatically on |CursorHold| then you might run into
problems reverting changes. Pressing |u| will undo the last change made by
Neoformat instead of the change that you made yourself - and then Neoformat
will run again redoing the change that you just reverted. To avoid this
problem you can run Neoformat with the Vim |undojoin| command to put changes
made by Neoformat into the same |undo-block| with the preceding change. For
example:

>
    augroup fmt
      autocmd!
      autocmd BufWritePre * undojoin | Neoformat
    augroup END
<

When |undojoin| is used this way pressing |u| will "skip over" the Neoformat
changes - it will revert both the changes made by Neoformat and the change
that caused Neoformat to be invoked.

==============================================================================
SUPPORTED FILETYPES				*neoformat-supported-filetypes*

- Arduino
  - [`uncrustify`](http://uncrustify.sourceforge.net),
    [`clang-format`](http://clang.llvm.org/docs/ClangFormat.html),
    [`astyle`](http://astyle.sourceforge.net)
- Assembly
  - [`asmfmt`](https://github.com/klauspost/asmfmt)
- Bazel
  - [`buildifier`](https://github.com/bazelbuild/buildtools/blob/master/buildifier/README.md)
- C
  - [`uncrustify`](http://uncrustify.sourceforge.net),
    [`clang-format`](http://clang.llvm.org/docs/ClangFormat.html),
    [`astyle`](http://astyle.sourceforge.net)
- C#
  - [`uncrustify`](http://uncrustify.sourceforge.net),
    [`astyle`](http://astyle.sourceforge.net)
- C++
  - [`uncrustify`](http://uncrustify.sourceforge.net),
    [`clang-format`](http://clang.llvm.org/docs/ClangFormat.html),
    [`astyle`](http://astyle.sourceforge.net)
- CMake
  - [`cmake_format`](https://github.com/cheshirekow/cmake_format)
- Crystal
  - `crystal tool format` (ships with [`crystal`](http://crystal-lang.org))
- CSS
  - `css-beautify` (ships with [`js-beautify`](https://github.com/beautify-web/js-beautify)),
    [`prettier`](https://github.com/prettier/prettier),
    [`prettydiff`](https://github.com/prettydiff/prettydiff),
    [`stylefmt`](https://github.com/morishitter/stylefmt),
    [`stylelint`](https://stylelint.io/),
    [`csscomb`](http://csscomb.com)
- CSV
  - [`prettydiff`](https://github.com/prettydiff/prettydiff)
- D
  - [`uncrustify`](http://uncrustify.sourceforge.net),
    [`dfmt`](https://github.com/Hackerpilot/dfmt)
- Dart
  - [`dartfmt`](https://www.dartlang.org/tools/)
- Dhall
  - [`dhall format`](https://dhall-lang.org)
- dune
  - [`dune format`](https://github.com/ocaml/dune)
- Elixir
  - [mix format](https://hexdocs.pm/mix/master/Mix.Tasks.Format.html)
- Elm
  - [`elm-format`](https://github.com/avh4/elm-format)
- Fish
  - [`fish_indent`](http://fishshell.com)
- Go
  - [`gofmt`](https://golang.org/cmd/gofmt/),
    [`goimports`](https://godoc.org/golang.org/x/tools/cmd/goimports)
- GLSL
  - [`clang-format`](http://clang.llvm.org/docs/ClangFormat.html)
- GraphQL
  - [`prettier`](https://github.com/prettier/prettier)
- Haskell
  - [`stylish-haskell`](https://github.com/jaspervdj/stylish-haskell)
  - [`hindent`](https://github.com/chrisdone/hindent)
  - [`hfmt`](https://github.com/danstiner/hfmt)
  - [`brittany`](https://github.com/lspitzner/brittany)
  - [`sort-imports`](https://github.com/evanrelf/sort-imports)
  - [`floskell`](https://github.com/ennocramer/floskell)
  - [`ormolu`](https://github.com/tweag/ormolu)
    `let g:ormolu_ghc_opt=["TypeApplications", "RankNTypes"]`
- PureScript
  - [`purty`](https://gitlab.com/joneshf/purty)
- HTML
  - `html-beautify` (ships with [`js-beautify`](https://github.com/beautify-web/js-beautify)),
    [`prettier`](https://github.com/jlongster/prettier),
    [`prettydiff`](https://github.com/prettydiff/prettydiff)
- Jade
  - [`pug-beautifier`](https://github.com/vingorius/pug-beautifier)
- Java
  - [`uncrustify`](http://uncrustify.sourceforge.net),
    [`astyle`](http://astyle.sourceforge.net)
- JavaScript
  - [`js-beautify`](https://github.com/beautify-web/js-beautify),
    [`prettier`](https://github.com/jlongster/prettier),
    [`prettydiff`](https://github.com/prettydiff/prettydiff),
    [`clang-format`](http://clang.llvm.org/docs/ClangFormat.html),
    [`esformatter`](https://github.com/millermedeiros/esformatter/),
    [`prettier-eslint`](https://github.com/kentcdodds/prettier-eslint-cli),
    [`standard`](https://standardjs.com/)
- JSON
  - [`js-beautify`](https://github.com/beautify-web/js-beautify),
    [`prettydiff`](https://github.com/prettydiff/prettydiff),
    [`prettier`](https://github.com/prettier/prettier),
    [`jq`](https://stedolan.github.io/jq/),
    [`fixjson`](https://github.com/rhysd/fixjson)
- Kotlin
  - [`ktlint`](https://github.com/shyiko/ktlint)
- LaTeX
  - [`latexindent`](https://github.com/cmhughes/latexindent.pl)
- Less
  - [`csscomb`](http://csscomb.com),
    [`prettier`](https://github.com/prettier/prettier),
    [`prettydiff`](https://github.com/prettydiff/prettydiff),
    [`stylelint`](https://stylelint.io/)
- Lua
  - [`luaformatter`](https://github.com/LuaDevelopmentTools/luaformatter)
- Markdown
  - [`remark`](https://github.com/wooorm/remark)
    [`prettier`](https://github.com/prettier/prettier),
- Matlab
  - [`matlab-formatter-vscode`](https://github.com/affenwiesel/matlab-formatter-vscode)
- Nim
  - nimpretty (ships with [nim](https://nim-lang.org/)),
- Nix
  - [`nixfmt`](https://github.com/serokell/nixfmt)
- Objective-C
  - [`uncrustify`](http://uncrustify.sourceforge.net),
    [`clang-format`](http://clang.llvm.org/docs/ClangFormat.html),
    [`astyle`](http://astyle.sourceforge.net)
- OCaml
  - [`ocp-indent`](http://www.typerex.org/ocp-indent.html)
  - [`ocamlformat`](https://github.com/ocaml-ppx/ocamlformat)
- Pandoc Markdown
  - [`pandoc`](https://pandoc.org/MANUAL.html)
- Pawn
  - [`uncrustify`](http://uncrustify.sourceforge.net)
- Perl
  - [`perltidy`](http://perltidy.sourceforge.net)
- PHP
  - [`php_beautifier`](http://pear.php.net/package/PHP_Beautifier)
  - [`php-cs-fixer`](http://cs.sensiolabs.org/)
  - [`phpcbf`](https://github.com/squizlabs/PHP_CodeSniffer)
- Proto
  - [`clang-format`](http://clang.llvm.org/docs/ClangFormat.html)
- Pug (formally Jade)
  - [`pug-beautifier`](https://github.com/vingorius/pug-beautifier)
- Python
  - [`yapf`](https://github.com/google/yapf),
    [`autopep8`](https://github.com/hhatto/autopep8),
    [`pydevf`](https://github.com/fabioz/PyDev.Formatter),
    [`pyment`](https://github.com/dadadel/pyment)
    [autoflake](https://github.com/myint/autoflake)
- R
  - [`styler`](https://github.com/r-lib/styler),
    [`formatR`](https://github.com/yihui/formatR)
  - [`refmt`](https://github.com/facebook/reason)
- Ruby
  - [`rufo`](https://github.com/asterite/rufo)
  - [`ruby-beautify`](https://github.com/erniebrodeur/ruby-beautify)
  - [`rubocop`](https://github.com/bbatsov/rubocop)
- Rust
  - [`rustfmt`](https://github.com/rust-lang-nursery/rustfmt)
- Sass
  - [`sass-convert`](http://sass-lang.com/documentation/#executables),
    [`stylelint`](https://stylelint.io/),
    [`csscomb`](http://csscomb.com)
- Sbt
  - [`scalafmt`](http://scalameta.org/scalafmt/)
- Scala
  - [`scalariform`](https://github.com/scala-ide/scalariform),
    [`scalafmt`](http://scalameta.org/scalafmt/)
- SCSS
  - [`sass-convert`](http://sass-lang.com/documentation/#executables),
    [`stylefmt`](https://github.com/morishitter/stylefmt),
    [`stylelint`](https://stylelint.io/)
    [`prettier`](https://github.com/prettier/prettier),
    [`prettydiff`](https://github.com/prettydiff/prettydiff),
    [`csscomb`](http://csscomb.com)
- Shell
  - [`shfmt`](https://github.com/mvdan/sh)
- SQL
  - [`sqlfmt`](https://github.com/jackc/sqlfmt)
  - `sqlformat` (ships with [`sqlparse`](https://github.com/andialbrecht/sqlparse))
  - `pg_format` (ships with [`pgFormatter`](https://github.com/darold/pgFormatter))
- Starlark
  - [`buildifier`](https://github.com/bazelbuild/buildtools/blob/master/buildifier/README.md)
- Svelte
  - [`prettier-plugin-svelte`](https://github.com/UnwrittenFun/prettier-plugin-svelte)
- Swift
  - [`Swiftformat`](https://github.com/nicklockwood/SwiftFormat)
- Terraform
  - [`terraform`](https://www.terraform.io/docs/commands/fmt.html)
- TypeScript
  - [`tsfmt`](https://github.com/vvakame/typescript-formatter),
    [`prettier`](https://github.com/prettier/prettier),
    [`tslint`](https://palantir.github.io/tslint)
    [`eslint_d`](https://github.com/mantoni/eslint_d.js)
    [`clang-format`](http://clang.llvm.org/docs/ClangFormat.html),
- VALA
  - [`uncrustify`](http://uncrustify.sourceforge.net)
- Vue
  - [`prettier`](https://github.com/prettier/prettier)
- XHTML
  - [`tidy`](http://www.html-tidy.org),
    [`prettydiff`](https://github.com/prettydiff/prettydiff)
- XML
  - [`tidy`](http://www.html-tidy.org),
    [`prettydiff`](https://github.com/prettydiff/prettydiff)
- YAML
  - [`pyaml`](https://pypi.python.org/pypi/pyaml),
    [`prettier`](https://github.com/prettier/prettier)

==============================================================================
vim:tw=78:ts=8:ft=help:norl:noet:fen:noet: