Is there a way to read or list wp_head() contents?

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I wanted to search-and-replace in the header, but Neither @majick or @Samuel Elh answers worked for me directly. So, combining their answers I got what eventually works:

function start_wp_head_buffer() {
    ob_start();
}
add_action('wp_head','start_wp_head_buffer',0);

function end_wp_head_buffer() {
    $in = ob_get_clean();

    // here do whatever you want with the header code
    echo $in; // output the result unless you want to remove it
}
add_action('wp_head','end_wp_head_buffer', PHP_INT_MAX); //PHP_INT_MAX will ensure this action is called after all other actions that can modify head

It was added to functions.php of my child theme.

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