From f9385ac5fc0ecc3ed05555e4fd87c6b209f58463 Mon Sep 17 00:00:00 2001
From: Faisal Ahammad <faisalahammad24@gmail.com>
Date: Thu, 30 Jul 2026 17:25:27 +0600
Subject: [PATCH] fix(uppercase): enqueue frontend styles for uppercase
 rich-text format

When the uppercase RichText format is applied to a core/paragraph block,
the saved HTML contains <span class="uppercase"> but the CSS rule
(.uppercase { text-transform: uppercase }) in style-coblocks-1.css was
not loaded on the frontend. Two changes:

- Widens has_coblocks_block() to pass the block_assets gate when
  post_content contains the uppercase format marker. This ensures
  coblocks-frontend is registered for the affected page.
- Adds a render_block filter check that enqueues coblocks-frontend
  when a rendered block's content contains class="uppercase".

Fixes #2654
---
 includes/class-coblocks-block-assets.php | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/includes/class-coblocks-block-assets.php b/includes/class-coblocks-block-assets.php
index eef7f0e5fe6..67801181c02 100644
--- a/includes/class-coblocks-block-assets.php
+++ b/includes/class-coblocks-block-assets.php
@@ -596,6 +596,11 @@ public function coblocks_enqueue_scripts_for_core_blocks( $block_content, $block
 			);
 		}
 
+		// Enqueue frontend styles when a core block uses the uppercase rich-text format.
+		if ( false !== strpos( $block_content, 'class="uppercase"' ) ) {
+			wp_enqueue_style( 'coblocks-frontend' );
+		}
+
 		return $block_content;
 	}
 
@@ -641,6 +646,8 @@ public function has_coblocks_block( WP_Post $post_object ) {
 			array_filter(
 				array(
 					false !== strpos( $post_object->post_content, '<!-- wp:coblocks/' ),
+					// Detect CoBlocks rich-text format marks on core blocks (e.g. uppercase on core/paragraph) so frontend styles load when the format is in use.
+					false !== strpos( $post_object->post_content, 'class="uppercase"' ),
 					// Having core blocks here, ensures that enqueues from block_assets are loaded.
 					has_block( 'core/block', $post_object ),
 					has_block( 'core/button', $post_object ),