Ticket #51550: 51550.diff

src/wp-includes/revision.php

@@ -564 +564 @@
          * @param int     $num  Number of revisions to store.
          * @param WP_Post $post Post object.
          */
-        return (int) apply_filters( 'wp_revisions_to_keep', $num, $post );
+        $num = apply_filters( 'wp_revisions_to_keep', $num, $post );
+
+        /**
+         * Filters the number of revisions to save for the given post by its post type.
+         *
+         * Overrides the value of WP_POST_REVISIONS.
+         *
+         * The dynamic portion of the hook name, `$post->post_type`, refers to
+         * the post type slug.
+         *
+         * @since 5.6.0
+         *
+         * @param int     $num  Number of revisions to store.
+         * @param WP_Post $post Post object.
+         */
+        $num = apply_filters( "wp_{$post->post_type}_revisions_to_keep", $num, $post );
+
+        return (int) $num;
 }
 
 /**