From 6e78ee096a8c035f5819325d5b6465b915008c60 Mon Sep 17 00:00:00 2001
From: Raymond Hill <rhill@raymondhill.net>
Date: Tue, 11 Jul 2023 15:10:27 -0400
Subject: [PATCH] Fix handling of empty strings for `set`/`set-attr` scriptlets

Related issue:
- https://github.com/uBlockOrigin/uBlock-issues/issues/2729
---
 assets/resources/scriptlets.js | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/assets/resources/scriptlets.js b/assets/resources/scriptlets.js
index 8128efbfb..4a16cd87b 100644
--- a/assets/resources/scriptlets.js
+++ b/assets/resources/scriptlets.js
@@ -400,7 +400,7 @@ function setConstantCore(
             cValue = true;
         } else if ( cValue === 'null' ) {
             cValue = null;
-        } else if ( cValue === "''" ) {
+        } else if ( cValue === "''" || cValue === '' ) {
             cValue = '';
         } else if ( cValue === '[]' ) {
             cValue = [];
@@ -2994,12 +2994,11 @@ function setAttr(
 ) {
     if ( typeof selector !== 'string' ) { return; }
     if ( selector === '' ) { return; }
-    if ( value === '' ) { return; }
 
     const validValues = [ '', 'false', 'true' ];
     let copyFrom = '';
 
-    if ( validValues.includes(value) === false ) {
+    if ( validValues.includes(value.toLowerCase()) === false ) {
         if ( /^\d+$/.test(value) ) {
             const n = parseInt(value, 10);
             if ( n >= 32768 ) { return; }