How to display WP Query filters?

There’s a global variable called $wp_filter (you can see examples of it all through the source of /wp-includes/plugin.php. This probably isn’t the WordPress Way to do it, but you could try something like this:

global $wp_filter;
var_dump( $wp_filter );

…but note the caveat on http://codex.wordpress.org/Global_Variables — “Accessing other globals besides the ones listed below is not recommended.” (And $wp_filter isn’t in that list.)

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