dwhitevisoft

WP Markdown Syntax Sugar work in conjunction with plugins such as <a href="https://wordpress.org/extend/plugins/wp-markdown/" rel="ugc">wp-markdown</a> 
and <a href="https://wordpress.org/extend/plugins/wp-highlightjs/" rel="ugc">wp-highlight.js</a>. Markdown is fantastic markup for easily 
writing blogs, and <a href="http://softwaremaniacs.org/soft/highlight/en/" rel="nofollow ugc">highlight.js</a> is an extremely easy way to highlight 
code examples. In most cases, highlight.js automatically detects the proper language for a block of code. In certain 
cases, primarily if your code example is short, highlight.js could improperly detect the language that you are using; 
that is where this plugin comes into play. By adding one line to your code blocks, you can explicitly set the language 
that you are using, allowing highlight.js to properly format your code.
The concept is inspired by the <a href="https://github.com/spjwebster/wp-markdown-syntax-highlight" rel="nofollow ugc">wp-markdown-syntax-highlight</a> 
plugin.
The usage is extremely simple. Just add a shebang as the first line of your code example with the language you are using.
<pre><code>#!ruby
class Foo < Bar
 def hello
 puts "Hello World!"
 end
end
</code></pre>
The shebang is removed, and the code is outputted as:
<pre><code><pre><code class="language-ruby">class Foo < Bar
 def hello
 puts "Hello World!"
 end
end</code></pre>
</code></pre>
Now the code block is properly formatted for highlight.js to do its magic, and the code snippet will be properly 
highlighted.

WP-Markdown-Syntax-Sugar

WP Markdown Syntax Sugar is a simple plugin that works in conjunction with Markdown code blocks and highlight.js to properly format code.

PiotrPress

Clearcode

The CC-Syntax-Highlight plugin supports syntax highlighting of Posts, Pages, and any public Custom Post Types. 
It uses <a href="https://highlightjs.org/" rel="nofollow ugc">highlight.js</a> or <a href="https://github.com/google/code-prettify" rel="nofollow ugc">google-code-prettify</a> libraries. 
Additionally it can use the <a href="https://clipboardjs.com/" rel="nofollow ugc">clipboard.js</a> library to add a button that copies text to the clipboard and <a href="https://github.com/wcoder/highlightjs-line-numbers.js/" rel="nofollow ugc">highlightjs-line-numbers.js</a> plugin to add line numbers. 
It is delivered with support for shortcode (default [code] – you can change it on the settings page) which automatically converts all special characters to HTML entities. 
This plugin is compatible with Multisite WordPress installations.
<h4>How does it work?</h4>
<ol>
<li>Go to the ‘Settings > Syntax Highlight’ page, select your preferred options and save them.</li>
<li>Simply add the source code to your post (or other selected public Custom Post Type) wrapped with: 
<pre><code>Your source code</code></pre> 
or if you would like to automatically convert all special characters to HTML entities, use shortcode wrapper instead (default [code] – you can change it on the settings page): 
<pre>[code]Your source code[/code]</pre></li>
</ol>
Plugin’s js scripts and css styles files only load if the source code occurs on displaying page.

CC-Syntax-Highlight

This plugin allows you very simply syntax highlight source code in your content using highlight.js or google-code-prettify libraries.

WP-Markdown-Syntax-Sugar vs CC-Syntax-Highlight