Build with the .NET 11 SDK and add the net11.0 asset

.github/workflows/build.yml

@@ -22,7 +22,14 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - uses: actions/setup-dotnet@v4
-      name: Install Current .NET SDK
+      name: Install .NET SDK 11.0 (release candidate)
+      with:
+        dotnet-version: '11.0.x'
+        dotnet-quality: 'preview'
+    - uses: actions/setup-dotnet@v4
+      name: 'Install .NET SDK 10.0'
+      with:
+        dotnet-version: '10.0.x'
     - uses: actions/setup-dotnet@v4
       name: 'Install .NET SDK 9.0'
       with:
@@ -44,11 +51,14 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        framework: [ 'net8.0', 'net10.0' ]
+        framework: [ 'net8.0', 'net10.0', 'net11.0' ]
     steps:
     - uses: actions/checkout@v4
     - uses: actions/setup-dotnet@v4
-      name: Install Current .NET SDK
+      name: Install .NET SDK 11.0 (release candidate)
+      with:
+        dotnet-version: '11.0.x'
+        dotnet-quality: 'preview'
     # Building the analyzers (the code fix projects in particular) for the linux runtime
     # results in some super-old System.* packages with vulnerabilities being pulled in.
     # Our analyzers don't do anything wrt. trimming and AOT so it's safe to disable them.
@@ -63,7 +73,10 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - uses: actions/setup-dotnet@v4
-      name: Install Current .NET SDK
+      name: Install .NET SDK 11.0 (release candidate)
+      with:
+        dotnet-version: '11.0.x'
+        dotnet-quality: 'preview'
     - name: Generate NuGet Packages
       run: dotnet pack --configuration Release --output nupkg
     - uses: actions/upload-artifact@v4

Documentation/src/async.md

@@ -14,7 +14,7 @@ The asynchronous APIs have two homes, and which one you use depends only on your
 * **Older frameworks** (`netstandard2.0` up to .NET 9): they are in the `Funcky.Async` package, which compiles the same
   sources against [System.Linq.Async](https://www.nuget.org/packages/System.Linq.Async) (versions 5 and 6).
 
-The `net10.0` asset of `Funcky.Async` contains nothing but type forwards to `Funcky`. A project that referenced
+The `net10.0` and `net11.0` assets of `Funcky.Async` contain nothing but type forwards to `Funcky`. A project that referenced
 `Funcky.Async` on .NET 8 and then retargets to .NET 10 therefore keeps the package reference working, and can drop
 it whenever convenient. The forwards do not make the two sides source compatible, though: where the base class
 library already provides an operator, Funcky defers to it, and two of them differ from the `Funcky.Async` shape.

FrameworkFeatureConstants.props

@@ -24,4 +24,7 @@
 	<PropertyGroup Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net10.0'))">
 		<DefineConstants>$(DefineConstants);SHUFFLE_EXTENSION;ASYNC_SUPPORTED</DefineConstants>
 	</PropertyGroup>
+	<PropertyGroup Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net11.0'))">
+		<DefineConstants>$(DefineConstants);INDEX_OF_CHAR_COMPARISON_RANGE;INDEX_OF_RUNE</DefineConstants>
+	</PropertyGroup>
 </Project>

Funcky.Analyzers/Funcky.Analyzers.Test/Funcky.Analyzers.Test.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net10.0</TargetFramework>
+        <TargetFramework>net11.0</TargetFramework>
 
         <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
         <GenerateBindingRedirectsOutputType>true</GenerateBindingRedirectsOutputType>

Funcky.Async/Funcky.Async.csproj

@@ -10,7 +10,7 @@
              the tests against each version of the range (see the SystemLinqAsyncVersion matrix in build.yml
              and Funcky.Async.Test.csproj), which exercises exactly the binary compatibility consumers rely on. -->
         <FunckyNewestTargetFramework>net9.0</FunckyNewestTargetFramework>
-        <TargetFrameworks>net10.0;$(FunckyNewestTargetFramework);net8.0;net5.0;netstandard2.1;netstandard2.0</TargetFrameworks>
+        <TargetFrameworks>net11.0;net10.0;$(FunckyNewestTargetFramework);net8.0;net5.0;netstandard2.1;netstandard2.0</TargetFrameworks>
         <LangVersion>preview</LangVersion>
         <Nullable>enable</Nullable>
         <!-- The package deliberately keeps targeting frameworks that are out of support, see SupportPolicy.md. -->
@@ -101,8 +101,8 @@
     <Import Project="..\Analyzers.props" />
     <Import Project="..\GlobalUsings.props" />
     <Import Project="..\FrameworkFeatureConstants.props" />
-    <PropertyGroup Condition="'$(TargetFramework)' != 'net10.0' and '$(TargetFramework)' != 'netstandard2.0'">
-        <!-- The public API is identical on every target framework except net10.0 (type forwards only) and netstandard2.0 (no System.Index). -->
+    <PropertyGroup Condition="'$(FunckyAsyncIntegrated)' != 'true' and '$(TargetFramework)' != 'netstandard2.0'">
+        <!-- The public API is identical on every target framework except net10.0 and newer (type forwards only) and netstandard2.0 (no System.Index). -->
         <FunckyPublicApiGroup>common</FunckyPublicApiGroup>
     </PropertyGroup>
     <Import Project="..\PublicApiAnalyzers.targets" />