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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 |
|---|---|
| 49 | * |
| 50 | * @since 4.0.0 |
| 51 | * @since 4.1.0 Added the `$post_type` parameter. |
| 52 | * |
| 53 | * @param bool $expand Whether to enable the 'expand' functionality. Default true. |
| 54 | * @param string $post_type Post type. |
| 55 | */ |
| 56 | if ( post_type_supports( $post_type, 'editor' ) && ! wp_is_mobile() && |
| 57 | ! ( $is_IE && preg_match( '/MSIE [5678]/', $_SERVER['HTTP_USER_AGENT'] ) ) && |
| 58 | apply_filters( 'wp_editor_expand', true, $post_type ) ) { |
| 59 | |
| 60 | wp_enqueue_script( 'editor-expand' ); |
| 61 | $_content_editor_dfw = true; |
| 62 | $_wp_editor_expand = ( get_user_setting( 'editor_expand', 'on' ) === 'on' ); |
| 63 | } |
| 64 | |
| 65 | if ( wp_is_mobile() ) { |
| 66 | wp_enqueue_script( 'jquery-touch-punch' ); |
| 67 | } |