Atom package - Markdown Preview Kramdown

Since different Markdown implementation will output differetn HTML sometimes, I make this package to let people preview the articles on GitHub Pages on Atom. It is modified from Markdown Preview

Show the rendered HTML markdown to the right of the current editor using ctrl-shift-m.

It is currently enabled for .markdown, .md, .mdown, .mkd, .mkdown, .ron, and .txt files.

Installation

1. You need to install kramdown library first. Follow the instruction, http://kramdown.gettalong.org/installation.html.

2. This package uses node package highlights which uses oniguruma. oniguruma is a native binding library and needs to be built when installing. You need to install Python 2.7, gcc, make tools.

   • On Mac
     1. Install Xcode from App Store.
     2. Launch Xcode or type xcodebuild -license to accept the license
     3. Type xcode-select --install to install xcode command line tools.
   • On Windows, follow the steps in https://github.com/nodejs/node-gyp, start from On Windows: and you do not need to manually install global node-gyp node package since Atom should have this. In the guide, there are two options, and option1 is my suggested way (But it needs to install your own node/npm first).
   • On Linux, install Python 2.7, make, gcc in your preferred way (apt, yum and so on).

3. Install this atom package.

4. (Optional) You may disable the default built-in Markdown-Preview to avoid confusion on shortcuts. They use the same shortcuts and this package will override those in Markdown-Preview.

Tested Atom version: 1.15.0. 1.23.3 Tested platforms:

• Mac 10.11, 10.12. 10.13
• Ubuntu 16.04
• win10 enterprise 64

When you upgrade to a new version of Atom, this package might need to be rebuilt

https://flight-manual.atom.io/hacking-atom/sections/debugging/#check-for-incompatible-packages

Development from source code

Besides the normal procedure (create a symbolic link of the git folder in ~/.atom/dev/packages), the important thing is that this package relies on some native binding library. So if you use your own node+npm to run npm install, it may result in some conflict with Atom's node. So please use Atom's built-in node+npm to install the node dependencies. Steps: running Update Package Dependencies: Update in Atom, ref: http://stackoverflow.com/questions/36810276/installing-package-dependencies-in-atom.

To-do List

• [ ] Ignore the Front Matter of Jekyll.
• [ ] Other encoding check/support. Now it supports ASCII and UTF-8, and other encoding needed to added.
• [ ] Automaticall install the needed kramdown library.
• [ ] Debug and Add back syntax highlight.

Other ways to preview the articles on GitHub Pages

1. Run Local Jekyll (e.g. bundle exec jekyll serve --config _config_dev.yml)
2. Paste markdown to https://trykramdown.herokuapp.com/
3. Paste markdown to https://kramdown.herokuapp.com/

About Fenced code block

1. Syntax highlighting of GitHub Flavored Markdown . It uses ```.
2. Fenced code block of Kramdown. It uses ~~~.

GitHub Pages and some/all markdown files on GitHub can accept these two types and show correctly. But this atom package only handles Kramdown type(~). Please keep in mind, and my opinion is to use ~. Also They both support non-fenced standard code block (indented 4 spaces) and single line code span.

About Kramdown

According https://github.com/blog/2100-github-pages-now-faster-and-simpler-with-jekyll-3-0, Starting May 1st, 2016, GitHub Pages will only support kramdown, Jekyll's default Markdown engine.

License

Markdown Preview Kramdown is released under the MIT license.