Remove the excerpt management #114

src/wp-admin/edit-form-advanced.php

@@ -254,7 +254,7 @@
 );
 
 if ( 'post' == $post_type ) {
-	$customize_display = '<p>' . __( 'The title field and the big Post Editing Area are fixed in place, but you can reposition all the other boxes using drag and drop. You can also minimize or expand them by clicking the title bar of each box. Use the Screen Options tab to unhide more boxes (Excerpt, Discussion, Slug, Author) or to choose a 1- or 2-column layout for this screen.' ) . '</p>';
+	$customize_display = '<p>' . __( 'The title field and the big Post Editing Area are fixed in place, but you can reposition all the other boxes using drag and drop. You can also minimize or expand them by clicking the title bar of each box. Use the Screen Options tab to unhide more boxes (Discussion, Slug, Author) or to choose a 1- or 2-column layout for this screen.' ) . '</p>';
 
 	get_current_screen()->add_help_tab(
 		array(

src/wp-admin/includes/meta-boxes.php

@@ -600,17 +600,19 @@ function post_categories_meta_box( $post, $box ) {
 /**
  * Display post excerpt form fields.
  *
+ * For calmPress it is a backward compatibility shim that does noting unless
+ * the manual excerpt plugin is installed, in which case it calls the relevant function.
+ *
  * @since 2.6.0
+ * @since calmPress 1.0.0
  *
- * @param object $post
+ * @param \WP_Post $post The post for which the excerpt is being modified.
  */
-function post_excerpt_meta_box($post) {
-?>
-<label class="screen-reader-text" for="excerpt"><?php _e('Excerpt') ?></label><textarea rows="1" cols="40" name="excerpt" id="excerpt"><?php echo $post->post_excerpt; // textarea_escaped ?></textarea>
-<p><?php
-	_e( 'Excerpts are optional hand-crafted summaries of your content that can be used in your theme.' );
-?></p>
-<?php
+function post_excerpt_meta_box( \WP_Post $post ) {
+	if ( function_exists( '\calmpress\manualexcerpt\post_excerpt_meta_box' ) ) {
+		// If the manual excerpt core plugin is installed, just pass control to it.
+		\calmpress\manualexcerpt\post_excerpt_meta_box( $post );
+	}
 }
 
 /**
@@ -964,10 +966,6 @@ function register_and_do_post_meta_boxes( $post ) {
 		add_meta_box( 'postimagediv', esc_html( $post_type_object->labels->featured_image ), 'post_thumbnail_meta_box', null, 'side', 'low', array( '__back_compat_meta_box' => true ) );
 	}
 
-	if ( post_type_supports( $post_type, 'excerpt' ) ) {
-		add_meta_box( 'postexcerpt', __( 'Excerpt' ), 'post_excerpt_meta_box', null, 'normal', 'core', array( '__back_compat_meta_box' => true ) );
-	}
-
 	/**
 	 * Fires in the middle of built-in meta box registration.
 	 *

src/wp-includes/post.php

@@ -1291,7 +1291,7 @@ function get_post_types( $args = array(), $output = 'names', $operator = 'and' )
  *                                              Default false.
  *     @type array       $supports              Core feature(s) the post type supports. Serves as an alias for calling
  *                                              add_post_type_support() directly. Core features include 'title',
- *                                              'editor', 'comments', 'revisions', 'author', 'excerpt',
+ *                                              'editor', 'comments', 'revisions', 'author',
  *                                              'page-attributes', 'thumbnail'.
  *                                              Additionally, the 'revisions' feature dictates whether the post type
  *                                              will store revisions, and the 'comments' feature dictates whether the
@@ -1746,7 +1746,7 @@ function _add_post_type_submenus() {
  *
  * All core features are directly associated with a functional area of the edit
  * screen, such as the editor or a meta box. Features include: 'title', 'editor',
- * 'comments', 'revisions', 'author', 'excerpt', 'page-attributes',
+ * 'comments', 'revisions', 'author', 'page-attributes',
  * 'thumbnail', 'custom-fields'.
  *
  * Additionally, the 'revisions' feature dictates whether the post type will
@@ -3441,15 +3441,14 @@ function wp_insert_post( $postarr, $wp_error = false ) {
 	$maybe_empty = 'attachment' !== $post_type
 		&& ! $post_content && ! $post_title && ! $post_excerpt
 		&& post_type_supports( $post_type, 'editor' )
-		&& post_type_supports( $post_type, 'title' )
-		&& post_type_supports( $post_type, 'excerpt' );
+		&& post_type_supports( $post_type, 'title' );
 
 	/**
 	 * Filters whether the post should be considered "empty".
 	 *
 	 * The post is considered "empty" if both:
-	 * 1. The post type supports the title, editor, and excerpt fields
-	 * 2. The title, editor, and excerpt fields are all empty
+	 * 1. The post type supports the title and editor fields
+	 * 2. The title and editor fields are empty
 	 *
 	 * Returning a truthy value to the filter will effectively short-circuit
 	 * the new post being inserted, returning 0. If $wp_error is true, a WP_Error
@@ -3462,7 +3461,7 @@ function wp_insert_post( $postarr, $wp_error = false ) {
 	 */
 	if ( apply_filters( 'wp_insert_post_empty_content', $maybe_empty, $postarr ) ) {
 		if ( $wp_error ) {
-			return new WP_Error( 'empty_content', __( 'Content, title, and excerpt are empty.' ) );
+			return new WP_Error( 'empty_content', __( 'Content and title are empty.' ) );
 		} else {
 			return 0;
 		}