wpautop.php

<?php

	foreach ( $pees as $tinkle ) {
		if ( preg_match( '!</?blockquote([^>]*)>!', $tinkle) >= 1 ) {
			// pee inside blockquotes (prevents splashing)
			$yellowblock = preg_replace('|<blockquote([^>]*)>|i', "<blockquote$1><p>", $tinkle);
			$yellowblock = str_replace('</blockquote>', '</p></blockquote>', $yellowblock);
			$pee .= $yellowblock . "\n";
		} elseif ( preg_match( '!</?' . $allblocks . '[^>]*>!', $tinkle ) >= 1 ) {
			$pee .= trim($tinkle, "\n") . "\n"; // ignore wrapping block elements in the stream
		} else {
			$pee .= '<p>' . trim($tinkle, "\n") . "</p>\n";
		}
	}