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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 59 | $dynamic_characters = array('/\'(\d\d(?:’|\')?s)/', '/(\s|\A|[([{<]|")\'/', '/(\d+)"/', '/(\d+)\'/', '/(\S)\'([^\'\s])/', '/(\s|\A|[([{<])"(?!\s)/', '/"(\s|\S|\Z)/', '/\'([\s.]|\Z)/', '/(\d+)x(\d+)/'); |
| 60 | $dynamic_replacements = array('’$1','$1‘', '$1″', '$1′', '$1’$2', '$1' . $opening_quote . '$2', $closing_quote . '$1', '’$1', '$1×$2'); |
| 61 | |
| 62 | $static_setup = true; |
| 63 | } |
| 64 | |
| 65 | // Transform into regexp sub-expression used in _wptexturize_pushpop_element |
| 66 | // Must do this everytime in case plugins use these filters in a context sensitive manner |
| 67 | $no_texturize_tags = '(' . implode('|', apply_filters('no_texturize_tags', $default_no_texturize_tags) ) . ')'; |
| 68 | $no_texturize_shortcodes = '(' . implode('|', apply_filters('no_texturize_shortcodes', $default_no_texturize_shortcodes) ) . ')'; |
| 69 | |
| 70 | $no_texturize_tags_stack = array(); |
| 71 | $no_texturize_shortcodes_stack = array(); |
| 72 | |
| 73 | for ( $i = 0; $i < $stop; $i++ ) { |
| 74 | $curl = $textarr[$i]; |
| 75 | |
| 76 | if ( !empty($curl) && '<' != $curl{0} && '[' != $curl{0} |
| 77 | && empty($no_texturize_shortcodes_stack) && empty($no_texturize_tags_stack)) { |