Wordpress Gist Shortcode

gist_wordpress_shortcode.php

// Add Shortcode to your functions.php

function gist_shortcode( $atts ) {

	// Attributes
	$atts = shortcode_atts(
		array(
			'name' => 'jonathanfann',
			'slug' => 'ae707752f2f2c3f93e739838f8dce5c0',
		),
		$atts,
		'gist'
	);

  	// start output
	$o = '';
	 
	// append url
	$o .= '<script src="https://gist.github.com/';
	    
	// append name
	    $o .= $atts['name'] . '/';
	    
	// append slug
	$o .= $atts['slug'] . '.js"></script>';
	    
	// return output
	return $o;
}

add_shortcode( 'gist', 'gist_shortcode' );

/* use the shortcode by entering [gist name="yourname" slug="yourslug"] to return 
<script src="https://gist.github.com/yourname/yourslug.js"></script> */

Use the shortcode by entering [gist name="yourname" slug="yourslug"] in a wordpress post to return
<script src="https://gist.github.com/yourname/yourslug.js"></script>.

By default it will return:
'name' => 'jonathanfann',
'slug' => 'ae707752f2f2c3f93e739838f8dce5c0',

(https://gist.github.com/jonathanfann/ae707752f2f2c3f93e739838f8dce5c0)