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vim-instant-markdown

Want to instantly preview finnicky markdown files, but don't want to leave your favorite editor, or have to do it in some crappy browser textarea? vim-instant-markdown is your friend! When you open a markdown file in vim, a browser window will open which shows the compiled markdown in real-time, and closes once you close the file in vim.

As a bonus, github-flavored-markdown is supported, and styles used while previewing are the same as those github uses!

Screenshot

Installation

You first need to have Ruby with RubyGems, and node.js with npm installed. (In the future there might be a version which won't require node.js at all, making installation easier)

  • [sudo] gem install pygments.rb
  • If you're using Ruby 1.9.2 or later, [sudo] gem install redcarpet. Otherwise, [sudo] gem install redcarpet -v 2.3.0
  • [sudo] npm -g install instant-markdown-d
  • If you're on Linux, the xdg-utils package needs to be installed (is installed by default on Ubuntu).
  • Copy the after/ftplugin/markdown/instant-markdown.vim file from this repo into your ~/.vim/after/ftplugin/markdown/ (creating directories as necessary), or use pathogen.
  • Ensure you have the line filetype plugin on in your .vimrc
  • Open a markdown file in vim and enjoy!

Configuration

g:instant_markdown_slow

By default, vim-instant-markdown will update the display in realtime. If that taxes your system too much, you can specify

let g:instant_markdown_slow = 1

before loading the plugin (for example place that in your ~/.vimrc). This will cause vim-instant-markdown to only refresh on the following events:

  • No keys have been pressed for a while
  • A while after you leave insert mode
  • You save the file being edited

g:instant_markdown_autostart

By default, vim-instant-markdown will automatically launch the preview window when you open a markdown file. If you want to manually control this behavior, you can specify

let g:instant_markdown_autostart = 0

in your .vimrc. You can then manually trigger preview via the command :InstantMarkdownPreview. This command is only available inside markdown buffers and when the autostart option is turned off.

Supported Platforms

OSX and Unix/Linuxes*.

*: One annoyance in Linux is that there's no way to reliably open a browser page in the background, so you'll likely have to manually refocus your vim session everytime you open a Markdown file. If you have ideas on how to address this I'd love to know!

FAQ

Why don't my <bla>.md files trigger this plugin?

By default, vim (7.3 and above) only recognizes files ending with .markdown, .mdown, and README.md as makrdown files. If you want <anything>.md to be recognized, I recommend installing one of many markdown plugins available, such as this one.

It's not working!

  • Make sure all the dependencies are installed...
    • Make sure instant-markdown-d was installed as a global module (e.g. using npm -g install)
    • Make sure the ruby gems were installed under your default Ruby (i.e. if you're using RVM, use gem install and NOT sudo gem install as that might cause the gems to be installed under a non-RVM Ruby)
  • If you're on OSX, and are using zsh and rbenv/rvm...

etc.

If you're curious, the code for the mini-server component for this plugin can be found at http://github.com/suan/instant-markdown-d. A plugin can easily be written for any editor to interface with the server to get the same functionality found here.

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Instant Markdown previews from VIm!

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