Fix delimiter propogation

src/Stubble.Core/Parser/TokenParsers/InvertedSectionParser.cs

@@ -87,7 +87,7 @@ public override void EndBlock(Processor processor, BlockToken token, BlockCloseT
             {
                 if (sectionTag.SectionName.Equals(sectionEndTag.SectionName))
                 {
-                    sectionTag.Tags = processor.CurrentTags;
+                    sectionTag.Tags = sectionEndTag.CurrentTags ?? processor.CurrentTags;
                     sectionTag.EndPosition = sectionEndTag.EndPosition;
                     sectionTag.IsClosed = true;
                 }
@@ -128,6 +128,7 @@ public override bool TryClose(Processor processor, ref StringSlice slice, BlockT
                     SectionName = sectionName,
                     EndPosition = tagEnd,
                     ContentEndPosition = blockStart,
+                    CurrentTags = processor.CurrentTags,
                     IsClosed = true
                 };
 

src/Stubble.Core/Parser/TokenParsers/SectionTagParser.cs

@@ -87,7 +87,7 @@ public override void EndBlock(Processor processor, BlockToken token, BlockCloseT
             {
                 if (sectionTag.SectionName.Equals(sectionEndTag.SectionName))
                 {
-                    sectionTag.Tags = processor.CurrentTags;
+                    sectionTag.Tags = sectionEndTag.CurrentTags ?? processor.CurrentTags;
                     sectionTag.EndPosition = sectionEndTag.EndPosition;
                     sectionTag.ContentEndPosition = sectionEndTag.ContentEndPosition;
                     sectionTag.IsClosed = true;
@@ -137,6 +137,7 @@ public override bool TryClose(Processor processor, ref StringSlice slice, BlockT
                     SectionName = sectionName,
                     EndPosition = tagEnd,
                     ContentEndPosition = blockStart,
+                    CurrentTags = processor.CurrentTags,
                     IsClosed = true
                 };
 

src/Stubble.Core/Tokens/SectionEndToken.cs

@@ -3,6 +3,8 @@
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 // </copyright>
 
+using Stubble.Core.Classes;
+
 namespace Stubble.Core.Tokens
 {
     /// <summary>
@@ -24,5 +26,10 @@ public class SectionEndToken : BlockCloseToken
         /// Gets or sets the end position for the content
         /// </summary>
         public int ContentEndPosition { get; set; }
+
+        /// <summary>
+        /// Gets or sets the tags that were active when this section was closed
+        /// </summary>
+        public Classes.Tags CurrentTags { get; set; }
     }
 }

test/Stubble.Core.Tests/StubbleTest.cs

@@ -500,6 +500,27 @@ public void It_Should_Allow_A_Render_Function_WithContext_In_Lambda()
             Assert.Equal("A is Cool", result);
         }
 
+        [Fact]
+        public void It_Should_Use_Correct_Delimiters_In_Lambda_When_Delimiters_Change_After_Section()
+        {
+            // When delimiters change AFTER a lambda section closes, SectionToken.Tags
+            // is incorrectly set to the final processor.CurrentTags (the post-change
+            // delimiters) rather than the tags that were active when the section closed.
+            // This causes the render callback to parse the section body with wrong delimiters.
+            var stubble = new StubbleBuilder().Build();
+
+            var obj = new
+            {
+                value = "World",
+                test = new Func<string, Func<string, string>, object>((template, render) => render(template))
+            };
+
+            // Delimiters change to <% %>, lambda section uses <% %>, then delimiters revert to {{ }}.
+            // The lambda body "<% value %>" should be parsed with <% %> delimiters.
+            var result = stubble.Render("{{=<% %>=}}<%#test%><% value %><%/test%><%={{ }}=%>{{value}}", obj);
+            Assert.Equal("WorldWorld", result);
+        }
+
         [Fact]
         public void It_Should_Throw_When_Ambiguous_Match()
         {