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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
This commit is contained in:
westi 2009-02-15 16:01:14 +00:00
parent ea903eba7e
commit e5003996e3
1 changed files with 21 additions and 7 deletions
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26
wp-includes/shortcodes.php
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@ -157,6 +157,14 @@ function do_shortcode($content) {
* The regular expression combines the shortcode tags in the regular expression
* in a regex class.
*
* The regular expresion contains 6 different sub matches to help with parsing.
*
* 1/6 - An extra [ or ] to allow for escaping shortcodes with double [[]]
* 2 - The shortcode name
* 3 - The shortcode argument list
* 4 - The self closing /
* 5 - The content of a shortcode when it wraps some content.
*
* @since 2.5
* @uses $shortcode_tags
*
@ -167,11 +175,12 @@ function get_shortcode_regex() {
$tagnames = array_keys($shortcode_tags);
$tagregexp = join( '|', array_map('preg_quote', $tagnames) );
return '\[('.$tagregexp.')\b(.*?)(?:(\/))?\](?:(.+?)\[\/\1\])?';
return '(.?)\[('.$tagregexp.')\b(.*?)(?:(\/))?\](?:(.+?)\[\/\2\])?(.?)';
}
/**
* Regular Expression callable for do_shortcode() for calling shortcode hook.
* @see get_shortcode_regex for details of the match array contents.
*
* @since 2.5
* @access private
@ -183,15 +192,20 @@ function get_shortcode_regex() {
function do_shortcode_tag($m) {
global $shortcode_tags;
$tag = $m[1];
$attr = shortcode_parse_atts($m[2]);
// allow [[foo]] syntax for escaping a tag
if ($m[1] == '[' && $m[6] == ']') {
return substr($m[0], 1, -1);
}
if ( isset($m[4]) ) {
$tag = $m[2];
$attr = shortcode_parse_atts($m[3]);
if ( isset($m[5]) ) {
// enclosing tag - extra parameter
return call_user_func($shortcode_tags[$tag], $attr, $m[4], $tag);
return $m[1] . call_user_func($shortcode_tags[$tag], $attr, $m[5]) . $m[6];
} else {
// self-closing tag
return call_user_func($shortcode_tags[$tag], $attr, NULL, $tag);
return $m[1] . call_user_func($shortcode_tags[$tag], $attr) . $m[6];
}
}