Parsing Perl well enough to do a good job of syntax highlighting is hard. The ony program I've seen that seems to get it right all the time is perltidy. It's 20,000 lines of Perl, most of which aren't concerned with syntax highlighting. But that gives a sense of the scale of the problem.
So, let's say you had a special tag, <perl_code> has been suggested here, that would run the tag contents through
perltidy --html. The highlighting is implemented with a CSS stylesheet, which could be incorporated into the standard site CSS. To turn off the highlighting, or to implement your own style, just add a custom stylesheet.
Of course, it would still be a significant load on the server(s).
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Are you posting in the right place? Check out Where do I post X? to know for sure.
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Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
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Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
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Want more info? How to link
or How to display code and escape characters
are good places to start.
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