I’ve done a bit of research on the current state of Syntax Highlighter support in bbPress 2. These are my findings thus far:

The “official” syntax highlighter plugin, Syntax Highlighter Evolved, does not yet support bbPress, and unfortunately the plugin does not seem to be well supported any longer. I still put a request in:

• http://wordpress.org/extend/plugins/syntaxhighlighter/
• http://wordpress.org/support/topic/plugin-syntaxhighlighter-evolved-please-add-bbpress-2-support?replies=1

The best option available at the moment appears to be the Crayon Syntax Highlighter.

• http://wordpress.org/extend/plugins/crayon-syntax-highlighter/
• http://ak.net84.net/crayon/crayon-with-bbpress/

Do note that at the time of writing, there appears to be a slight hickup with the WP backend upon activating Crayon with bbPress already installed, so you might want to wait for the patch. But other than that the plugin seems to be working marvelously, it’s packed with features and the developer is actively supporting it.

Alternatively, for the WP-Markdown users, there’s an enhancement available for those who prefer Gorbatchev’s highlighter over Prettify.js (might wanna try that on this forum).

• http://wordpress.org/extend/plugins/wp-markdown-syntaxhighlighter/

[@sam-rohn Participant 11 years, 12 months ago]

this code highlighter based on highlight.js seems to work well with wordpress 3.5 & bbpress 2.2, also ignores angle and square brackets etc

https://wordpress.org/extend/plugins/sunburst-code-prettify/

http://softwaremaniacs.org/soft/highlight/en/

sam