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Introduce a simple mechanism for escaping shortcodes by doubling the [[]]. Fixes #6518 props tellyworth.
git-svn-id: http://svn.automattic.com/wordpress/trunk@10576 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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@ -156,7 +156,15 @@ function do_shortcode($content) {
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*
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* The regular expression combines the shortcode tags in the regular expression
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* in a regex class.
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*
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*
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* The regular expresion contains 6 different sub matches to help with parsing.
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*
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* 1/6 - An extra [ or ] to allow for escaping shortcodes with double [[]]
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* 2 - The shortcode name
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* 3 - The shortcode argument list
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* 4 - The self closing /
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* 5 - The content of a shortcode when it wraps some content.
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*
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* @since 2.5
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* @uses $shortcode_tags
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*
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@ -167,11 +175,12 @@ function get_shortcode_regex() {
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$tagnames = array_keys($shortcode_tags);
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$tagregexp = join( '|', array_map('preg_quote', $tagnames) );
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return '\[('.$tagregexp.')\b(.*?)(?:(\/))?\](?:(.+?)\[\/\1\])?';
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return '(.?)\[('.$tagregexp.')\b(.*?)(?:(\/))?\](?:(.+?)\[\/\2\])?(.?)';
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}
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/**
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* Regular Expression callable for do_shortcode() for calling shortcode hook.
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* @see get_shortcode_regex for details of the match array contents.
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*
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* @since 2.5
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* @access private
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@ -183,15 +192,20 @@ function get_shortcode_regex() {
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function do_shortcode_tag($m) {
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global $shortcode_tags;
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$tag = $m[1];
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$attr = shortcode_parse_atts($m[2]);
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// allow [[foo]] syntax for escaping a tag
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if ($m[1] == '[' && $m[6] == ']') {
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return substr($m[0], 1, -1);
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}
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$tag = $m[2];
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$attr = shortcode_parse_atts($m[3]);
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if ( isset($m[4]) ) {
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if ( isset($m[5]) ) {
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// enclosing tag - extra parameter
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return call_user_func($shortcode_tags[$tag], $attr, $m[4], $tag);
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return $m[1] . call_user_func($shortcode_tags[$tag], $attr, $m[5]) . $m[6];
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} else {
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// self-closing tag
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return call_user_func($shortcode_tags[$tag], $attr, NULL, $tag);
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return $m[1] . call_user_func($shortcode_tags[$tag], $attr) . $m[6];
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}
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}
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