From 08ab6692cf41dc095d4ed6793e7cdbccb6866c33 Mon Sep 17 00:00:00 2001
From: real_nowhereman <real_nowhereman@aa359531-4221-0410-9edc-b0b45c38dadb>
Date: Thu, 21 Apr 2011 16:35:22 +0000
Subject: [PATCH] import wpautop from wp3

---
 fp-includes/core/core.wp-formatting.php | 40 ++++++++++++++++++++-----
 1 file changed, 33 insertions(+), 7 deletions(-)

diff --git a/fp-includes/core/core.wp-formatting.php b/fp-includes/core/core.wp-formatting.php
index cfbfcc9..2ef0e69 100644
--- a/fp-includes/core/core.wp-formatting.php
+++ b/fp-includes/core/core.wp-formatting.php
@@ -75,11 +75,28 @@
 		return $text;
 	}
 	
+/**
+ * Replaces double line-breaks with paragraph elements.
+ *
+ * A group of regex replaces used to identify text formatted with newlines and
+ * replace double line-breaks with HTML paragraph tags. The remaining
+ * line-breaks after conversion become <<br />> tags, unless $br is set to '0'
+ * or 'false'.
+ *
+ * @since 0.71
+ *
+ * @param string $pee The text which has to be formatted.
+ * @param int|bool $br Optional. If set, this will convert all remaining line-breaks after paragraphing. Default true.
+ * @return string Text which has been converted into correct paragraph tags.
+ */
 function wpautop($pee, $br = 1) {
+
+	if ( trim($pee) === '' )
+		return '';
 	$pee = $pee . "\n"; // just to make things a little easier, pad the end
 	$pee = preg_replace('|<br />\s*<br />|', "\n\n", $pee);
 	// Space things out a little
-	$allblocks = '(?:table|thead|tfoot|caption|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|select|form|map|area|blockquote|address|math|style|input|p|h[1-6]|hr)';
+	$allblocks = '(?:table|thead|tfoot|caption|col|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|select|option|form|map|area|blockquote|address|math|style|input|p|h[1-6]|hr|fieldset|legend|section|article|aside|hgroup|header|footer|nav|figure|figcaption|details|menu|summary)';
 	$pee = preg_replace('!(<' . $allblocks . '[^>]*>)!', "\n$1", $pee);
 	$pee = preg_replace('!(</' . $allblocks . '>)!', "$1\n\n", $pee);
 	$pee = str_replace(array("\r\n", "\r"), "\n", $pee); // cross-platform newlines
@@ -93,9 +110,8 @@ function wpautop($pee, $br = 1) {
 	$pee = '';
 	foreach ( $pees as $tinkle )
 		$pee .= '<p>' . trim($tinkle, "\n") . "</p>\n";
-	$pee = preg_replace('|<p>\s*?</p>|', '', $pee); // under certain strange conditions it could create a P of entirely whitespace
-	$pee = preg_replace('!<p>([^<]+)\s*?(</(?:div|address|form)[^>]*>)!', "<p>$1</p>$2", $pee);
-	$pee = preg_replace( '|<p>|', "$1<p>", $pee );
+	$pee = preg_replace('|<p>\s*</p>|', '', $pee); // under certain strange conditions it could create a P of entirely whitespace
+	$pee = preg_replace('!<p>([^<]+)</(div|address|form)>!', "<p>$1</p></$2>", $pee);
 	$pee = preg_replace('!<p>\s*(</?' . $allblocks . '[^>]*>)\s*</p>!', "$1", $pee); // don't pee all over a tag
 	$pee = preg_replace("|<p>(<li.+?)</p>|", "$1", $pee); // problem with nested lists
 	$pee = preg_replace('|<p><blockquote([^>]*)>|i', "<blockquote$1><p>", $pee);
@@ -103,20 +119,30 @@ function wpautop($pee, $br = 1) {
 	$pee = preg_replace('!<p>\s*(</?' . $allblocks . '[^>]*>)!', "$1", $pee);
 	$pee = preg_replace('!(</?' . $allblocks . '[^>]*>)\s*</p>!', "$1", $pee);
 	if ($br) {
-		$pee = preg_replace_callback('/<(script|style).*?<\/\\1>/s', create_function('$matches', 'return str_replace("\n", "<WPPreserveNewline />", $matches[0]);'), $pee);
+		$pee = preg_replace_callback('/<(script|style).*?<\/\\1>/s', '_autop_newline_preservation_helper', $pee);
 		$pee = preg_replace('|(?<!<br />)\s*\n|', "<br />\n", $pee); // optionally make line breaks
 		$pee = str_replace('<WPPreserveNewline />', "\n", $pee);
 	}
 	$pee = preg_replace('!(</?' . $allblocks . '[^>]*>)\s*<br />!', "$1", $pee);
 	$pee = preg_replace('!<br />(\s*</?(?:p|li|div|dl|dd|dt|th|pre|td|ul|ol)[^>]*>)!', '$1', $pee);
 	if (strpos($pee, '<pre') !== false)
-		$pee = preg_replace_callback('!(<pre.*?>)(.*?)</pre>!is', 'clean_pre', $pee );
+		$pee = preg_replace_callback('!(<pre[^>]*>)(.*?)</pre>!is', 'clean_pre', $pee );
 	$pee = preg_replace( "|\n</p>$|", '</p>', $pee );
-	//$pee = preg_replace('/<p>\s*?(' . get_shortcode_regex() . ')\s*<\/p>/s', '$1', $pee); // don't auto-p wrap shortcodes that stand alone
 
 	return $pee;
 }
 
+/**
+ * Newline preservation help function for wpautop
+ *
+ * @since 3.1.0
+ * @access private
+ * @param array $matches preg_replace_callback matches array
+ * @returns string
+ */
+function _autop_newline_preservation_helper( $matches ) {
+	return str_replace("\n", "<WPPreserveNewline />", $matches[0]);
+}
 	
 	function seems_utf8($Str) { # by bmorel at ssi dot fr
 		for ($i=0; $i<strlen($Str); $i++) {