')!==false)
			{
				$contentArr = self::splithtmlByPRE($_html);
				foreach ($contentArr as $k =>&$elem)
				{
					if (stripos($elem,'
')===false)
					{
						//$elem = str_replace('@(\r\n)@i',' ',$elem);
						$elem = str_replace(array("\r\n","\n"),($isHTML?'':' '),$elem);
					}
				}
				$_html = implode('',$contentArr);
			}
			else
			{
				$_html = str_replace(array("\r\n","\n"),($isHTML?'':' '),$_html);
			}
		}
		$tags = array (
			0 => '~]*>\r*\n*~si',
			1 => '~]*>\r*\n*~si',
			2 => '~]*>\r*\n*~si',
			3 => '~]*>\r*\n*~si',
			4 => '~]*>\r*\n*~si',
			5 => '~]*>\r*\n*~si',
			6 => '~]*>~si',
			7 => '~]*>\r*\n*~si',
			8 => '~]*>\r*\n*~si',
			9 => '~]*>\r*\n*~si',
			10 => '/
/',
			11 => '/
/',
			12 => '~
~si',
			13 => '~]*>~si',
			14 => '/<=([1234567890])/',
			15 => '/>=([1234567890])/',
			16 => '/<([1234567890])/',
			17 => '/>([1234567890])/',
		);
		$Replace = array (
			0 => "\r\n",
			1 => "\r\n",
			2 => "\r\n",
			3 => "\r\n",
			4 => "\r\n",
			5 => "\r\n",
			6 => "\r\n",
			7 => "\r\n",
			8 => "\r\n",
			9 => "\r\n__________________________________________________\r\n",
			10 => '#blockquote#type#cite#',
			11 => '#blockquote#type#cite#',
			12 => '#blockquote#end#cite#',
			13 => '#blockquote#type#cite#',
			14 => '#lowerorequal#than#$1',
			15 => '#greaterorequal#than#$1',
			16 => '#lower#than#$1',
			17 => '#greater#than#$1',
		);
		$_html = preg_replace($tags,$Replace,$_html);
		$_html = preg_replace('~\s*]*>~si',' - ',$_html);
		$_html = preg_replace('~]+>~s','',$_html);
		// replace emailaddresses eclosed in <> (eg.: ) with the emailaddress only (e.g: me@you.de)
		self::replaceEmailAdresses($_html);
		//convert hrefs to description -> URL
		//$_html = preg_replace('~]+href=\"([^"]+)\"[^>]*>(.*)~si','[$2 -> $1]',$_html);
		$_html = preg_replace_callback('~]+href=\"([^"]+)\"[^>]*>(.*?)~si','self::transform_url2text',$_html);

		// reducing double \r\n to single ones, dont mess with pre sections
		if ($stripcrl === true && $isHTML)
		{
			if (stripos($_html,'
')!==false)
			{
				$contentArr = self::splithtmlByPRE($_html);
				foreach ($contentArr as $k =>&$elem)
				{
					if (stripos($elem,'
')===false)
					{
						//this is supposed to strip out all remaining stuff in tags, this is sometimes taking out whole sections off content
						if ( $stripalltags ) {
							$_html = preg_replace('~<[^>^@]+>~s','',$_html);
						}
						// strip out whitespace inbetween CR/LF
						$elem = preg_replace('~\r\n\s+\r\n~si', "\r\n\r\n", $elem);
						// strip out / reduce exess CR/LF
						$elem = preg_replace('~\r\n{3,}~si',"\r\n\r\n",$elem);
					}
				}
				$_html = implode('',$contentArr);
			}
			else
			{
				//this is supposed to strip out all remaining stuff in tags, this is sometimes taking out whole sections off content
				if ( $stripalltags ) {
					$_html = preg_replace('~<[^>^@]+>~s','',$_html);
				}
				// strip out whitespace inbetween CR/LF
				$_html = preg_replace('~\r\n\s+\r\n~si', "\r\n\r\n", $_html);
				// strip out / reduce exess CR/LF
				$_html = preg_replace('~(\r\n){3,}~si',"\r\n\r\n",$_html);
			}
		}
		//this is supposed to strip out all remaining stuff in tags, this is sometimes taking out whole sections off content
		if ( $stripalltags ) {
			$_html = preg_replace('~<[^>^@]+>~s','',$_html);
			//$_html = strip_tags($_html, '');
		}
		// reducing spaces (not for input that was plain text from the beginning)
		if ($isHTML) $_html = preg_replace('~ +~s',' ',$_html);
		// restoring ampersands
		$_html = str_replace('#amper#sand#','&',$_html);
		// restoring lower|greater[or equal] than
		$_html = str_replace('#lowerorequal#than#','<=',$_html);
		$_html = str_replace('#greaterorequal#than#','>=',$_html);
		$_html = str_replace('#lower#than#','<',$_html);
		$_html = str_replace('#greater#than#','>',$_html);
		//error_log(__METHOD__.__LINE__.' Charset:'.$displayCharset.' -> '.$_html);
		$_html = html_entity_decode($_html, ENT_COMPAT, $displayCharset);
		//error_log(__METHOD__.__LINE__.' Charset:'.$displayCharset.' After html_entity_decode: -> '.$_html);
		//self::replaceEmailAdresses($_html);
		$pos = strpos($_html, 'blockquote');
		//error_log("convert HTML2Text: $_html");
		if($pos === false) {
			return $_html;
		} else {
			$indent = 0;
			$indentString = '';

			$quoteParts = preg_split('/#blockquote#type#cite#/', $_html, -1, PREG_SPLIT_OFFSET_CAPTURE);
			foreach($quoteParts as $quotePart) {
				if($quotePart[1] > 0) {
					$indent++;
					$indentString .= '>';
				}
				$quoteParts2 = preg_split('/#blockquote#end#cite#/', $quotePart[0], -1, PREG_SPLIT_OFFSET_CAPTURE);

				foreach($quoteParts2 as $quotePart2) {
					if($quotePart2[1] > 0) {
						$indent--;
						$indentString = substr($indentString, 0, $indent);
					}

					$quoteParts3 = explode("\r\n", $quotePart2[0]);

					foreach($quoteParts3 as $quotePart3) {
						//error_log(__METHOD__.__LINE__.'Line:'.$quotePart3);
						$allowedLength = 76-strlen("\r\n$indentString");
						// only break lines, if not already indented
						if (substr($quotePart3,0,strlen($indentString)) != $indentString)
						{
							if (strlen($quotePart3) > $allowedLength) {
								$s=explode(" ", $quotePart3);
								$quotePart3 = "";
								$linecnt = 0;
								foreach ($s as $k=>$v) {
									$cnt = strlen($v);
									// only break long words within the wordboundaries,
									// but it may destroy links, so we check for href and dont do it if we find it
									if($cnt > $allowedLength && stripos($v,'href=')===false) {
										//error_log(__METHOD__.__LINE__.'LongWordFound:'.$v);
										$v=wordwrap($v, $allowedLength, "\r\n$indentString", true);
									}
									// the rest should be broken at the start of the new word that exceeds the limit
									if ($linecnt+$cnt > $allowedLength) {
										$v="\r\n$indentString$v";
										//error_log(__METHOD__.__LINE__.'breaking here:'.$v);
										$linecnt = 0;
									} else {
										$linecnt += $cnt;
									}
									if (strlen($v))  $quotePart3 .= (strlen($quotePart3) ? " " : "").$v;
								}
							}
						}
						//error_log(__METHOD__.__LINE__.'partString to return:'.$indentString . $quotePart3);
						$asciiTextBuff[] = $indentString . $quotePart3 ;
					}
				}
			}
			return implode("\r\n",$asciiTextBuff);
		}
	}

	/**
	 * split html by PRE tag, return array with all content pre-sections isolated in array elements
	 * @author Leithoff, Klaus
	 * @param string html
	 * @return mixed array of parts or unaffected html
	 */
	static function splithtmlByPRE($html)
	{
		$searchFor = '
',$pos);
			$length = $endofpre-$pos+6;
			$html2ret[] = substr($html,$pos,$length);
			$searchFor = '