mehdown

The Markdown parser used on the forums at meh.com.

Adds the following features to Markdown:

• Converts URL-like text to links.
• Converts image URLs to images.
• Optionally detects image sizes.
• External links open in a new browser tab/window.
• Automatic detection of @usernames.
• Support for tables in GitHub Flavored Markdown syntax.
• Typographic replacements for (c) (r) (tm) (p) +- ... !!! ??? --.
• “Smartypants, double quotes” and ‘single quotes’
• Support for strikethrough using the ~~strikethrough~~ syntax.
• Support for adding anchors to headers.
• Better linebreak/newline support.

Emoji

• Supports common emoji :shortnames:.
• Supports native unicode emoji: 😄.
• Supports ASCII smileys: :).

Turns URLs from many popular sites into HTML embeds:

• GitHub gists are embedded inline.
• Image URLs are converted to images.
• imgur URLs are converted to embeded images/videos.
• Kickstarter URLs are converted to campaign previews.
• Reddit permalink URLs are converted to embeddable comment threads.
• SoundCloud URLs are converted to audio players.
• Twitter status URLs are converted to embeddable tweets.
• Vimeo URLs are converted to video players.
• Vine URLs are converted to video players.
• YouTube URLs are converted to video players.

Supports /commands:

• /8ball question - Ask the Magic 8-Ball a question
• /coinflip heads or tails - Flip a coin
• /concerned - ಠ_ಠ
• /cowsay text or --help - ASCII cow with a message
• /eightball question - Ask the Magic 8-Ball a question
• /emojify text - Swap out words with emoji
• /flip text - uʍop ǝpısdn ʇxǝʇ dıʃℲ
• /giphy text - Post a random GIF
• /google query - Search Google for the specified query
• /image text - Post a random image
• /jumble text - Shuffele middele letetsrs of wodrs
• /leet text - Translate text to L3375P34K
• /lolspeak text - Translate text to LOLSPEAK
• /piglatin text - Translate text to igpay atinlay
• /reverse text - txet esreveR
• /roll notation or --help - Roll the dice
• /shrug - ¯\_(ツ)_/¯
• /tableflip - (╯°□°）╯︵ ┻━┻
• /youtube text - Post a random YouTube video

Supports a subset of BBCode tags

• [b], [code], [i], [img], [quote], [s], [url], [youtube]

Usage

var mehdown = require('mehdown');

mehdown.render('markdown text here', { baseUrl: 'https://meh.com', commands: true, detectImageSizes: false }, function(err, html) {
    console.log(html);
});