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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 |
|---|---|
| 900 | ( ( preg_match( '!AppleWebKit/(\d+)!', $_SERVER['HTTP_USER_AGENT'], $match ) && intval($match[1]) >= 420 ) || |
| 901 | !preg_match( '!opera[ /][2-8]|konqueror|safari!i', $_SERVER['HTTP_USER_AGENT'] ) ) |
| 902 | && 'comment.php' != $pagenow ) { |
| 903 | $wp_rich_edit = true; |
| 904 | } else { |
| 905 | $wp_rich_edit = false; |
| 906 | } |
| 907 | } |
| 908 | |
| 909 | return apply_filters('user_can_richedit', $wp_rich_edit); |
| 910 | } |
| 911 | |
| 912 | function wp_default_editor() { |
| 913 | $r = user_can_richedit() ? 'tinymce' : 'html'; // defaults |
| 914 | if ( $user = wp_get_current_user() ) { // look for cookie |
| 915 | if ( isset($_COOKIE['wordpress_editor_' . $user->ID]) && in_array($_COOKIE['wordpress_editor_' . $user->ID], array('tinymce', 'html', 'test') ) ) |
| 916 | $r = $_COOKIE['wordpress_editor_' . $user->ID]; |
| 917 | } |
| 918 | return apply_filters( 'wp_default_editor', $r ); // filter |