From 30da76050c60acca4e1a03d01d6142f9bfd6d2a3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ella=20van=C2=A0Durpe?= <ella@vandurpe.com>
Date: Fri, 24 Feb 2023 15:38:09 +0200
Subject: [PATCH] Fix inline paste

---
 .../src/components/rich-text/use-paste-handler.js   | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/packages/block-editor/src/components/rich-text/use-paste-handler.js b/packages/block-editor/src/components/rich-text/use-paste-handler.js
index 66d1aab7061bf..83716b1669387 100644
--- a/packages/block-editor/src/components/rich-text/use-paste-handler.js
+++ b/packages/block-editor/src/components/rich-text/use-paste-handler.js
@@ -9,6 +9,8 @@ import {
 	findTransform,
 	getBlockTransforms,
 	htmlToBlocks,
+	hasBlockSupport,
+	getBlockInnerHTML,
 } from '@wordpress/blocks';
 import {
 	isEmpty,
@@ -45,6 +47,15 @@ function adjustLines( value, isMultiline ) {
 	return replace( value, new RegExp( LINE_SEPARATOR, 'g' ), '\n' );
 }
 
+function maybeInline( blocks, mode ) {
+	if ( mode !== 'AUTO' ) return blocks;
+	if ( blocks.length !== 1 ) return blocks;
+	const [ block ] = blocks;
+	if ( ! hasBlockSupport( block.name, '__unstablePasteTextInline', false ) )
+		return blocks;
+	return getBlockInnerHTML( block );
+}
+
 export function usePasteHandler( props ) {
 	const propsRef = useRef( props );
 	propsRef.current = props;
@@ -215,7 +226,7 @@ export function usePasteHandler( props ) {
 			// pasted content and remove inline styles.
 			const isInternal = !! clipboardData.getData( 'rich-text' );
 			const content = isInternal
-				? htmlToBlocks( html )
+				? maybeInline( htmlToBlocks( html ), mode )
 				: pasteHandler( {
 						HTML: html,
 						plainText,