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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 |
|---|---|
| 548 | |
| 549 | $settings = self::default_settings(); |
| 550 | $settings['plugins'] = implode( ',', $plugins ); |
| 551 | |
| 552 | if ( ! empty( $mce_external_plugins ) ) { |
| 553 | $settings['external_plugins'] = wp_json_encode( $mce_external_plugins ); |
| 554 | } |
| 555 | |
| 556 | /** This filter is documented in wp-admin/includes/media.php */ |
| 557 | if ( apply_filters( 'disable_captions', '' ) ) { |
| 558 | $settings['wpeditimage_disable_captions'] = true; |
| 559 | } |
| 560 | |
| 561 | $mce_css = $settings['content_css']; |
| 562 | |
| 563 | /* |
| 564 | * The `editor-style.css` added by the theme is generally intended for the editor instance on the Edit Post screen. |
| 565 | * Plugins that use wp_editor() on the front-end can decide whether to add the theme stylesheet |
| 566 | * by using `get_editor_stylesheets()` and the `mce_css` or `tiny_mce_before_init` filters, see below. |