wp_list_pages quick question

A quick question, but I don’t know of a quick solution. I’ve coded navigation bars and the like that are context sensitive to the current location. wp_list_pages() isn’t aware very aware of taxonomy.

Basically, use http://codex.wordpress.org/Function_Reference/get_pages and then test each result with http://codex.wordpress.org/Function_Reference/get_page_children. If the test returns true, draw an arrow, otherwise draw normal.

I don’t have any PHP that does this exactly, all my functions are mixed up with other functionality otherwise I’d copy them for you.