From 0cd2484e1f00a90d73fc7fbb238048e7bb5e3270 Mon Sep 17 00:00:00 2001
From: zhaowenkai <799480165@qq.com>
Date: Wed, 29 May 2024 09:36:19 +0800
Subject: [PATCH] Fixed `&` search after consuming parenthesis

---
 src/Compiler/Parser.cs                |  2 +-
 src/Compiler/Utility.cs               |  4 ++--
 test/CssInCSharp.Tests/ParserTests.cs | 19 +++++++++++++++++++
 3 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/src/Compiler/Parser.cs b/src/Compiler/Parser.cs
index 8416673..0c732df 100644
--- a/src/Compiler/Parser.cs
+++ b/src/Compiler/Parser.cs
@@ -42,7 +42,7 @@ public static List<Element> Parse(Tokenizer tokenizer, string value, Element roo
                     case 40:
                         if (previous != 108 && CharAt(characters, length - 1) == 58)
                         {
-                            if (IndexOf(characters += Replace(tokenizer.Delimit(character), "&", "&\f"), "&\f") != -1)
+                            if (IndexOf(characters += Replace(tokenizer.Delimit(character), "&", "&\f"), "&\f", Abs(index != 0 ? points[index - 1] : 0)) != -1)
                                 ampersand = -1;
                             break;
                         }
diff --git a/src/Compiler/Utility.cs b/src/Compiler/Utility.cs
index 4a69f69..17c8db0 100644
--- a/src/Compiler/Utility.cs
+++ b/src/Compiler/Utility.cs
@@ -11,9 +11,9 @@ public static int CharAt(string value, int index)
             return (int) value[index];
         }
 
-        public static int IndexOf(string value, string search)
+        public static int IndexOf(string value, string search, int position)
         {
-            return value.IndexOf(search);
+            return value.IndexOf(search, position);
         }
 
         public static string Replace(string value, string pattern, string replacement, bool all = false)
diff --git a/test/CssInCSharp.Tests/ParserTests.cs b/test/CssInCSharp.Tests/ParserTests.cs
index 17e5e5f..1f82d98 100644
--- a/test/CssInCSharp.Tests/ParserTests.cs
+++ b/test/CssInCSharp.Tests/ParserTests.cs
@@ -142,6 +142,21 @@ public void Ampersand_In_String()
             ).ShouldBe(".user [href=\"https://css-tricks.com?a=1&b=2\"]{color:red;}");
         }
 
+        [Fact]
+        public void Ampersand_In_First_Selector_Within_A_CommaSeparated_List()
+        {
+            stylis(@"
+        div {
+          display: flex;
+
+          &.foo,
+          p:not(:last-child) {
+            background: red;
+          }
+        }
+            ").ShouldBe(".user div{display:flex;}.user div.foo,.user div p:not(:last-child){background:red;}");
+        }
+
         [Fact]
         public void Escaped_Chars_In_Selector_Identifiers()
         {
@@ -769,6 +784,10 @@ public void Context_Character()
                 .ShouldBe(string.Join("",
                     ".user{background:url[img}.png];}",
                     ".user .a{background:url[img}.png];}"));
+            stylis("background: url(i&m&g.png);.a {background: url(i&m&g.png);}")
+                .ShouldBe(string.Join("",
+                    ".user{background:url(i&m&g.png);}",
+                    ".user .a{background:url(i&m&g.png);}"));
         }
 
         [Fact]