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vim-plugins/bundle/haskell-vim/README.md

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+Syntax Highlighting and Indentation for Haskell and Cabal
+=========================================================
+
+I was unhappy with the Haskell scripts that are
+shipped with vim, therefore I decided to make my
+own based on [idris-vim][].
+
+I hope you find this useful.
+
+![Screenshot](http://raichoo.github.io/images/haskell-vim.png)
+
+## Features
+
+* Covers a broader spectrum of keywords
+* Highlighting for new features like type families, pattern synonyms, arrow syntax, recursive do, role annotations, QuasiQuotation
+* More contextual highlighting (e.g. highlight 'as' or 'family' only in appropriate places)
+* Smarter indentation
+* Better Cabal support
+
+## Installation
+
+I recommend using [Pathogen][] for installation. Simply clone
+this repo into your `~/.vim/bundle` directory and you are ready to go.
+
+    cd ~/.vim/bundle
+    git clone https://github.com/neovimhaskell/haskell-vim.git
+
+Be sure that the following lines are in your
+`.vimrc`
+
+
+    syntax on
+    filetype plugin indent on
+
+### Manual Installation
+
+Copy content into your `~/.vim` directory.
+
+## Configuration
+
+### Features
+
+To enable the features you would like to use, just add the according line to your
+`.vimrc`.
+
+```viml
+let g:haskell_enable_quantification = 1   " to enable highlighting of `forall`
+let g:haskell_enable_recursivedo = 1      " to enable highlighting of `mdo` and `rec`
+let g:haskell_enable_arrowsyntax = 1      " to enable highlighting of `proc`
+let g:haskell_enable_pattern_synonyms = 1 " to enable highlighting of `pattern`
+let g:haskell_enable_typeroles = 1        " to enable highlighting of type roles
+let g:haskell_enable_static_pointers = 1  " to enable highlighting of `static`
+let g:haskell_backpack = 1                " to enable highlighting of backpack keywords
+```
+
+### Highlighting
+
+`haskell-vim` has an opinionated highlighting. If you do not like that you can switch to
+a more traditional mode by setting `g:haskell_classic_highlighting` to `1`.
+
+Disabling Template Haskell and Quasiquoting syntax is possible by setting
+`g:haskell_disable_TH` to `1`.
+
+### Indentation
+
+To configure indentation in `haskell-vim` you can use the following variables to change indentation depth, just add the according line to your `.vimrc`.
+
+If you dislike how indentation works you can disable it by setting `g:haskell_indent_disable` to
+`1`.
+
+Additionally you can use the
+[vim-hindent](https://github.com/alx741/vim-hindent) plugin to achieve automatic
+indentation using *hindent*.
+
+#### Haskell
+
+* `let g:haskell_indent_if = 3`
+
+        if bool
+        >>>then ...
+        >>>else ...
+
+* `let g:haskell_indent_case = 2`
+
+        case xs of
+        >>[]     -> ...
+        >>(y:ys) -> ...
+
+* `let g:haskell_indent_let = 4`
+
+        let x = 0 in
+        >>>>x
+
+* `let g:haskell_indent_where = 6`
+
+        where f :: Int -> Int
+        >>>>>>f x = x
+
+* `let g:haskell_indent_before_where = 2`
+
+        foo
+        >>where
+
+* `let g:haskell_indent_after_bare_where = 2`
+
+        where
+        >>foo
+
+* `let g:haskell_indent_do = 3`
+
+        do x <- a
+        >>>y <- b
+
+* `let g:haskell_indent_in = 1`
+
+        let x = 1
+        >in x
+
+* `let g:haskell_indent_guard = 2`
+
+        f x y
+        >>|
+
+`haskell-vim` also supports an alterative style for `case` indentation.
+
+* `let g:haskell_indent_case_alternative = 1`
+
+        f xs ys = case xs of
+        >>[]     -> ...
+        >>(y:ys) -> ...
+
+
+#### Cabal
+
+*  `let g:cabal_indent_section = 2` (limited to max. 4 spaces)
+
+        executable name
+        >>main-is:             Main.hs
+
+
+[Pathogen]: https://github.com/tpope/vim-pathogen
+[idris-vim]: https://github.com/idris-hackers/idris-vim