Here is another (much more elaborate) attempt at fixing the pentuple-apostrophe problem (patch below). This should handle all situations correctly where users enter correctly nested mark-up, e.g. '' text ''' text '''''. Even for incorrectly nested mark-up, it often returns desirable results: '' text ''' text '' text ''' is turned into <em> text <strong> text </strong></em><strong> text </strong> However, for incorrect mark-up, it sometimes returns weird results. For example, for the following input: '' text ''' text '' text if I'm not mistaken (remember I don't have an installation to test it on), it will return: <em> text <strong> text </strong></em>''' text which is at least correct HTML. Anyway, here's the patch. Greetings, Timwi --- OutputPage-orig.php Sun Jun 29 15:36:00 2003 +++ OutputPage.php Sun Jun 29 15:35:08 2003 @@ -675,9 +675,67 @@ /* private */ function doQuotes( $text ) { - $text = preg_replace( "/'''(.+)'''/mU", "<strong>\$1</strong>", $text ); - $text = preg_replace( "/''(.+)''/mU", "<em>\$1</em>", $text ); - return $text; + if ( preg_match( "/^(.*)''(.*)$/mU", $text, $m ) ) { + if ( substr ($m[2], 0, 1) == "'" ) { + return $m[1] . doQuotesStrong ( substr ($m[2], 1) ); + } else { + return $m[1] . doQuotesEm ( $m[2] ); + } + } else { + return $text; + } + } + + /* private */ function doQuotesEm( $text ) + { + if ( preg_match( "/^(.*)''(.*)$/mU", $text, $m ) ) { + if ( substr ($m[2], 0, 1) == "'" ) { + return doQuotesEmStrong ( $m[1], substr ($m[2], 1) ); + } else { + return "<em>" . $m[1] . "</em>" . doQuotes ( $m[2] ); + } + } else { + return "''" . $text; + } + } + + /* private */ function doQuotesStrong( $text ) + { + if ( preg_match( "/^(.*)''(.*)$/mU", $text, $m ) ) { + if ( substr ($m[2], 0, 1) == "'" ) { + return "<strong>" . $m[1] . "</strong>" . doQuotes ( substr ($m[2], 1) ); + } else { + return doQuotesStrongEm ( $m[1], $m[2] ); + } + } else { + return "'''" . $text; + } + } + + /* private */ function doQuotesEmStrong( $pre, $text ) + { + if ( preg_match( "/^(.*)''(.*)$/mU", $text, $m ) ) { + if ( substr ($m[2], 0, 1) == "'" ) { + return doQuotesEm ( $pre . "<strong>" . $m[1] . "</strong>" . substr ($m[2], 1) ); + } else { + return "<em>" . $pre . "<strong>" . $m[1] . "</strong></em>" . doQuotesStrong ( $m[2] ); + } + } else { + return "'''''" . $text; + } + } + + /* private */ function doQuotesStrongEm( $pre, $text ) + { + if ( preg_match( "/^(.*)''(.*)$/mU", $text, $m ) ) { + if ( substr ($m[2], 0, 1) == "'" ) { + return "<strong>" . $pre . "<em>" . $m[1] . "</em></strong>" . doQuotesEm ( substr ($m[2], 1) ); + } else { + return doQuotesStrong ( $pre . "<em>" . $m[1] . "</em>" . $m[2] ); + } + } else { + return "'''''" . $text; + } } /* private */ function doHeadings( $text )