I’ve been looking for a decent code markup plugin for WordPress so that I can include source code fragments in WordPress.
Problem is, using <CODE> tag in conjuction with <PRE> injected extra blank lines ( <BR/> ) into the code.
Using Code Markup, I was able to do it.
But there was a trick…
First, the plugin requires that the <code> tag be in lowercase. Internally, I was using uppercase so it’d stand out visually to me. In theory, HTML tags ought to be case insensitive, but the filter required them. I’m going to look at this as a “good thing” since it allows me both worlds. I just wish I found it by a means other than clever guesswork.
Second, if you want spaces preserved, you need to put your code block inside of a <pre> tag. This is actually well documented on the Code Markup site.
Third and finally, do not go sprinkling HTML entities like & in your code; let the filter do it for you.