HAML

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HAML, aka HTML Abstraction Markup Language, is an open source template language created in 2006 by Hampton Lintorn-Catlin.

Source code:

git clone https://github.com/haml/haml

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Haml (HTML Abstraction Markup Language) is a templating system that is designed to avoid writing inline code in a web document and make the HTML easy and clean. Haml gives the flexibility to have some dynamic content in HTML. Similar to other web languages like PHP, ASP, JSP and template systems like eRuby, Haml also embeds some code that gets executed during runtime and generates HTML code in order to provide some dynamic content. Read more on Wikipedia...

HAML website
HAML Wikipedia page
HAML is developed on GitHub and has 3,653 stars
HAML docs
There are at least 323 HAML repos on GitHub
HAML first developed in Unspace Interactive
file extensions for HAML include haml and hamldeface
The Google BigQuery Public Dataset GitHub snapshot shows 390 users using HAML in 465 repos on GitHub
There are 467 members in the HAML subreddit
CodeMirror package for syntax highlighting HAML
Pygments supports syntax highlighting for HAML
GitHub supports syntax highlighting for HAML
haml.info was registered in 2012
See also: (14 related languages)Ruby, HTML, PHP, ASP, JSP, ERB, ASCII, UTF-8, Ruby on Rails, CSS, BBCode, YAML, Sass, WML

Example from the web:

%section.container
 %h1= post.title
 %h2= post.subtitle
 .content
   = post.content

Example from hello-world:

%html
  %title Hello World
  %body
    %h1 Hello World

Example from Linguist:

%p
  Hello,
  World!

Example from Wikipedia:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html lang='en' xml:lang='en' xmlns='http://www.w3.org/1999/xhtml'>
  <head>
    <title>BoBlog</title>
    <meta content='text/html; charset=utf-8' http-equiv='Content-Type' />
    <link href="/stylesheets/main.css" media="screen" rel="Stylesheet" type="text/css" />
  </head>
  <body>
    <div id='header'>
      <h1>BoBlog</h1>
      <h2>Bob's Blog</h2>
    </div>
    <div id='content'>
      <div class='entry'>
        <h3 class='title'>Halloween</h3>
        <p class='date'>Tuesday, October 31, 2006</p>
        <p class='body'>
          Happy Halloween, glorious readers! I'm going to a party this evening... I'm very excited.
        </p>
      </div>
      <div class='entry'>
        <h3 class='title'>New Rails Templating Engine</h3>
        <p class='date'>Friday, August 11, 2006</p>
        <p class='body'>
          There's a very cool new Templating Engine out for Ruby on Rails. It's called Haml.
        </p>
      </div>
    </div>
    <div id='footer'>
      <p>
        All content copyright © Bob
      </p>
    </div>
  </body>
</html>

Feature	Supported	Token	Example
Comments	✓		-# A comment
Line Comments	✓	-#	-# A comment
Semantic Indentation	✓
Disk Output	X

HAML - Template language

Language features