From 91dc2d1b42d8208f257947b9379a37d4df514747 Mon Sep 17 00:00:00 2001
From: Sergey Biryukov <sergeybiryukov@git.wordpress.org>
Date: Mon, 30 May 2022 14:52:00 +0000
Subject: [PATCH] Media: Add support for WebP images in the Thickbox library.

This ensures that `.webp` images are properly recognized and displayed in the modal as expected.

Follow-up to [50810], [51227], [52073].

Props ilunabar, graham73may, sabernhardt, mukesh27, SergeyBiryukov.
Fixes #55786.

git-svn-id: https://develop.svn.wordpress.org/trunk@53451 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/js/_enqueues/vendor/thickbox/thickbox.js | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/js/_enqueues/vendor/thickbox/thickbox.js b/src/js/_enqueues/vendor/thickbox/thickbox.js
index 62ffb4b941..5470467a1e 100644
--- a/src/js/_enqueues/vendor/thickbox/thickbox.js
+++ b/src/js/_enqueues/vendor/thickbox/thickbox.js
@@ -76,10 +76,16 @@ function tb_show(caption, url, imageGroup) {//function called when the user clic
 	   		baseURL = url;
 	   }
 
-	   var urlString = /\.jpg$|\.jpeg$|\.png$|\.gif$|\.bmp$/;
+	   var urlString = /\.jpg$|\.jpeg$|\.png$|\.gif$|\.bmp$|\.webp$/;
 	   var urlType = baseURL.toLowerCase().match(urlString);
 
-		if(urlType == '.jpg' || urlType == '.jpeg' || urlType == '.png' || urlType == '.gif' || urlType == '.bmp'){//code to show images
+		if(urlType == '.jpg' ||
+			urlType == '.jpeg' ||
+			urlType == '.png' ||
+			urlType == '.gif' ||
+			urlType == '.bmp' ||
+			urlType == '.webp'
+		){//code to show images
 
 			TB_PrevCaption = "";
 			TB_PrevURL = "";