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Ⅰ. 插件描述

Vim plugin that conceals lambda/function syntax with lambda characters

Ⅱ. 基本信息

创建日期：  2014-09-21 使用用户：  33 Github星：  41 插件作者：  Caleb Smith

Ⅲ. 安装方法

使用Vundle管理器安装

在你的.vimrc下添加:

Plugin 'calebsmith/vim-lambdify'

… 然后在Vim中运行以下命令:

:source %
:PluginInstall

对于Vundle版本 < 0.10.2，请用上面的Bundle替换Plugin。

使用NeoBundle管理器安装

在你的.vimrc下添加:

NeoBundle 'calebsmith/vim-lambdify'

… 然后在Vim中运行以下命令:

:source %
:NeoBundleInstall

使用VimPlug管理器安装

在你的.vimrc下添加:

Plug 'calebsmith/vim-lambdify'

… 然后在Vim中运行以下命令:

:source %
:PlugInstall

使用Pathogen管理器安装

在终端中运行以下命令:

cd ~/.vim/bundle
git clone https://github.com/calebsmith/vim-lambdify

Ⅳ. 文档说明

vim-lambdify

A vim plugin that conceals lambdas/inline functions with a lambda character for
various languages

Requirements

Vim >= 7.3 (for the conceal feature)

Some file types rely on syntax files built-in to Vim >= 7.4

Installation

If you are using or , add this to your list of bundles::

Plugin 'calebsmith/vim-lambdify'

For use:

Plug 'calebsmith/vim-lambdify'

Another option is manually copying the /after/syntax files into
~/.vim/after/syntax and /autoload/vimlambdify.vim into ~/.vim/autoload

A third option is to clone this repo and run make, which will automatically
do the work of copying the appropriate files to a location within ~/.vim

Overview

Vim's conceal feature allows for some text to be replaced with something else
for display purposes, without changing the underlying representation of what
is saved into the file. Plugins such as vim-haskellConceal and vim-cute-python
use this to replace many different things with more pithy/mathy symbols. The
approach taken here is to replace only lambdas, but to do so for many
different languages to avoid having to use many plugins for a single feature.

Additionally, some plugins lose syntax highlighting for concealed characters.
vim-lambdify makes efforts to ensure highlighting is kept.

At the moment, the following languages have lambda conceal support through
vim-lambdify:

• Clojure
• Scheme
• Erlang
• Haskell
• Elm
• Python
• Ruby
• JavaScript
• Java
• C#

N.B.

The vim-polyglot plugin is a dependency for the JavaScript arrow function (=>) to work properly, since the default syntax file is outdated.

For Java it's necessary to change this line in the default Java syntax file ($VIMRUNTIME\syntax\java.vim):

syn match javaError "<<<\|\.\.\|=>\|||=\|&&=\|[^-]->\|\*\/"

to:

syn match javaError "<<<\|\.\.\|=>\|||=\|&&=\|\*\/"

Otherwise the -> operator will be highlighted as error by default. You can use the plugin, that already has this correction.

More will likely be added over time. These just happen to be languages I use
frequently that have lambdas or something akin to them.

Feel free to open a pull request to incorporate an unsupported language.

Acknowledgements

Many thanks for the ideas and some implementation details taken from the
following plugins:

• Twinside/vim-haskellConceal
• ehamberg/vim-cute-python
• dkinzer/vim-schemer
• tyok/js-mask