From 7c6a9f01281a9739f54ef57d7deecb41a873ef38 Mon Sep 17 00:00:00 2001
From: Michał Gołębiowski-Owczarek <m.goleb@gmail.com>
Date: Fri, 14 May 2021 23:37:19 +0200
Subject: All: Drop $.ui.escapeSelector in favor of $.escapeSelector

Fixes #14991
Closes gh-1957
---
 ui/jquery-patch.js | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

(limited to 'ui/jquery-patch.js')

diff --git a/ui/jquery-patch.js b/ui/jquery-patch.js
index 4d939535e..578c47a3f 100644
--- a/ui/jquery-patch.js
+++ b/ui/jquery-patch.js
@@ -36,6 +36,36 @@ if ( !$.uniqueSort ) {
 	$.uniqueSort = $.unique;
 }
 
+// Support: jQuery 2.2.x or older.
+// This method has been defined in jQuery 3.0.0.
+// Code from https://github.com/jquery/jquery/blob/e539bac79e666bba95bba86d690b4e609dca2286/src/selector/escapeSelector.js
+if ( !$.escapeSelector ) {
+
+	// CSS string/identifier serialization
+	// https://drafts.csswg.org/cssom/#common-serializing-idioms
+	var rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\x80-\uFFFF\w-]/g;
+
+	var fcssescape = function( ch, asCodePoint ) {
+		if ( asCodePoint ) {
+
+			// U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER
+			if ( ch === "\0" ) {
+				return "\uFFFD";
+			}
+
+			// Control characters and (dependent upon position) numbers get escaped as code points
+			return ch.slice( 0, -1 ) + "\\" + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " ";
+		}
+
+		// Other potentially-special ASCII characters get backslash-escaped
+		return "\\" + ch;
+	};
+
+	$.escapeSelector = function( sel ) {
+		return ( sel + "" ).replace( rcssescape, fcssescape );
+	};
+}
+
 // Support: jQuery 3.4.x or older
 // These methods have been defined in jQuery 3.5.0.
 if ( !$.fn.even || !$.fn.odd ) {
-- 
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