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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 |
|---|---|
| 1754 | if ( get_user_option( 'rich_editing' ) == 'true' || ! is_user_logged_in() ) { // default to 'true' for logged out users |
| 1755 | if ( $is_safari ) { |
| 1756 | $wp_rich_edit = ! wp_is_mobile() || ( preg_match( '!AppleWebKit/(\d+)!', $_SERVER['HTTP_USER_AGENT'], $match ) && intval( $match[1] ) >= 534 ); |
| 1757 | } elseif ( $is_gecko || $is_opera || $is_chrome || $is_IE ) { |
| 1758 | $wp_rich_edit = true; |
| 1759 | } |
| 1760 | } |
| 1761 | } |
| 1762 | |
| 1763 | return apply_filters('user_can_richedit', $wp_rich_edit); |
| 1764 | } |
| 1765 | |
| 1766 | /** |
| 1767 | * Find out which editor should be displayed by default. |
| 1768 | * |
| 1769 | * Works out which of the two editors to display as the current editor for a |
| 1770 | * user. |
| 1771 | * |
| 1772 | * @since 2.5.0 |