Ensure that --nologo adheres to DOTNET_NOLOGO if present

.editorconfig

@@ -511,11 +511,11 @@ dotnet_diagnostic.IDE0040.severity = warning
 insert_final_newline = false
 
 # Verify settings
-[*.{received,verified}.{txt,xml,json}]
+[*.{received,verified}.{txt,xml,json,sh,zsh,nu,fish,ps1}]
 charset = "utf-8-bom"
 end_of_line = lf
 indent_size = unset
 indent_style = unset
 insert_final_newline = false
 tab_width = unset
-trim_trailing_whitespace = false
+trim_trailing_whitespace = false

.gitattributes

@@ -67,3 +67,7 @@
 *.verified.txt text eol=lf working-tree-encoding=UTF-8
 *.verified.xml text eol=lf working-tree-encoding=UTF-8
 *.verified.json text eol=lf working-tree-encoding=UTF-8
+*.verified.sh text eol=lf working-tree-encoding=UTF-8
+*.verified.zsh text eol=lf working-tree-encoding=UTF-8
+*.verified.nu text eol=lf working-tree-encoding=UTF-8
+*.verified.fish text eol=lf working-tree-encoding=UTF-8

.vscode/settings.json

@@ -1,4 +1,11 @@
 {
     "dotnet.testWindow.disableAutoDiscovery": true,
-    "dotnet.defaultSolution": "sdk.slnx"
+    "dotnet.testWindow.disableBuildOnRun": true,
+    "dotnet.defaultSolution": "cli.slnf",
+    "files.associations": {
+      "*.slnf": "json",
+      "*.props": "xml",
+      "*.targets": "xml",
+      "*.*proj": "xml"
+    }
 }

cli.slnf

@@ -0,0 +1,15 @@
+{
+  "solution": {
+    "path": "sdk.slnx",
+    "projects": [
+      "src\\BuiltInTools\\dotnet-watch\\dotnet-watch.csproj",
+      "src\\Cli\\dotnet\\dotnet.csproj",
+      "src\\Cli\\Microsoft.DotNet.Cli.Utils\\Microsoft.DotNet.Cli.Utils.csproj",
+      "test\\dotnet-new.IntegrationTests\\dotnet-new.IntegrationTests.csproj",
+      "test\\dotnet-watch.Tests\\dotnet-watch.Tests.csproj",
+      "test\\dotnet.Tests\\dotnet.Tests.csproj",
+      "test\\Microsoft.DotNet.Cli.Utils.Tests\\Microsoft.DotNet.Cli.Utils.Tests.csproj",
+      "test\\Microsoft.NET.TestFramework\\Microsoft.NET.TestFramework.csproj"
+    ]
+  }
+}

src/Cli/Microsoft.DotNet.Cli.Utils/Env.cs

@@ -1,6 +1,8 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System.Diagnostics.CodeAnalysis;
+
 namespace Microsoft.DotNet.Cli.Utils;
 
 public static class Env
@@ -21,6 +23,9 @@ public static class Env
     public static bool GetEnvironmentVariableAsBool(string name, bool defaultValue = false) =>
         s_environment.GetEnvironmentVariableAsBool(name, defaultValue);
 
+    public static bool TryGetEnvironmentVariableAsBool(string name, [NotNullWhen(true)] out bool value) =>
+        s_environment.TryGetEnvironmentVariableAsBool(name, out value);
+
     public static int? GetEnvironmentVariableAsNullableInt(string name) =>
         s_environment.GetEnvironmentVariableAsNullableInt(name);
 

src/Cli/Microsoft.DotNet.Cli.Utils/EnvironmentProvider.cs

@@ -1,6 +1,7 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System.Diagnostics.CodeAnalysis;
 using Microsoft.DotNet.Cli.Utils.Extensions;
 
 namespace Microsoft.DotNet.Cli.Utils;
@@ -136,6 +137,12 @@ public bool GetEnvironmentVariableAsBool(string name, bool defaultValue)
         return Environment.GetEnvironmentVariable(variable, target);
     }
 
+    public bool TryGetEnvironmentVariable(string name, [NotNullWhen(true)] out string? value)
+    {
+        value = Environment.GetEnvironmentVariable(name);
+        return value != null;
+    }
+
     public void SetEnvironmentVariable(string variable, string value, EnvironmentVariableTarget target)
     {
         Environment.SetEnvironmentVariable(variable, value, target);
@@ -150,4 +157,57 @@ public void SetEnvironmentVariable(string variable, string value, EnvironmentVar
 
         return null;
     }
+
+    public bool TryGetEnvironmentVariableAsBool(string name, [NotNullWhen(true)] out bool value)
+    {
+        if (TryGetEnvironmentVariable(name, out string? strValue) &&
+            (bool.TryParse(strValue, out bool boolValue)
+             || TryParseNonBoolConstantStringAsBool(strValue, out boolValue)))
+        {
+            value = boolValue;
+            return true;
+        }
+        else
+        {
+            value = false;
+            return false;
+        }
+    }
+
+    /// <summary>
+    /// Parses non-boolean constant strings like "1", "0", "yes", "no", "on", "off" as boolean values.
+    /// </summary>
+    private static bool TryParseNonBoolConstantStringAsBool(string? strValue, out bool value)
+    {
+        switch (strValue?.ToLowerInvariant())
+        {
+            case "1":
+            case "yes":
+            case "on":
+                value = true;
+                return true;
+            case "0":
+            case "no":
+            case "off":
+                value = false;
+                return true;
+            default:
+                value = false;
+                return false;
+        }
+    }
+
+    public bool TryGetEnvironmentVariableAsInt(string name, [NotNullWhen(true)] out int value)
+    {
+        if (TryGetEnvironmentVariable(name, out string? strValue) && int.TryParse(strValue, out int intValue))
+        {
+            value = intValue;
+            return true;
+        }
+        else
+        {
+            value = -1;
+            return false;
+        }
+    }
 }

src/Cli/Microsoft.DotNet.Cli.Utils/IEnvironmentProvider.cs

@@ -3,6 +3,9 @@
 
 namespace Microsoft.DotNet.Cli.Utils;
 
+using System.Diagnostics.CodeAnalysis;
+
+
 public interface IEnvironmentProvider
 {
     IEnumerable<string> ExecutableExtensions { get; }
@@ -19,6 +22,10 @@ public interface IEnvironmentProvider
 
     string? GetEnvironmentVariable(string name);
 
+    bool TryGetEnvironmentVariable(string name, [NotNullWhen(true)] out string? value);
+    bool TryGetEnvironmentVariableAsBool(string name, [NotNullWhen(true)] out bool value);
+    bool TryGetEnvironmentVariableAsInt(string name, [NotNullWhen(true)] out int value);
+
     string? GetEnvironmentVariable(string variable, EnvironmentVariableTarget target);
 
     void SetEnvironmentVariable(string variable, string value, EnvironmentVariableTarget target);

src/Cli/Microsoft.DotNet.Cli.Utils/MSBuildArgs.cs

@@ -21,7 +21,9 @@ private MSBuildArgs(
         string[]? getTargetResult,
         string[]? getResultOutputFile,
         VerbosityOptions? verbosity,
-        string[]? otherMSBuildArgs)
+        bool noLogo,
+        string[]? otherMSBuildArgs
+        )
     {
         GlobalProperties = properties;
         RestoreGlobalProperties = restoreProperties;
@@ -31,6 +33,7 @@ private MSBuildArgs(
         GetTargetResult = getTargetResult;
         GetResultOutputFile = getResultOutputFile;
         Verbosity = verbosity;
+        NoLogo = noLogo;
         OtherMSBuildArgs = otherMSBuildArgs is not null
             ? [.. otherMSBuildArgs]
             : new List<string>();
@@ -51,16 +54,33 @@ private MSBuildArgs(
     /// </summary>
     public string[]? RequestedTargets { get; }
 
+    /// <summary>
+    /// If specified, the list of MSBuild Property names to retrieve and report directly for this build of a single project.
+    /// </summary>
     public string[]? GetProperty { get; }
 
+    /// <summary>
+    /// If specified, the list of MSBuild Item names to retrieve and report directly for this build of a single project.
+    /// </summary>
     public string[]? GetItem { get; }
 
+    /// <summary>
+    /// If specified, the list of MSBuild Target Output/Return Items to retrieve and report directly for this build of a single project.
+    /// </summary>
     public string[]? GetTargetResult { get; }
 
+    /// <summary>
+    /// If specified, the list of output files to which to write --getProperty, --getItem, and --getTargetResult outputs.
+    /// </summary>
     public string[]? GetResultOutputFile { get; }
 
     public VerbosityOptions? Verbosity { get; }
 
+    /// <summary>
+    /// Whether or not the MSBuild product header text should be emitted at the start of this build
+    /// </summary>
+    public bool NoLogo { get; }
+
     /// <summary>
     /// All other arguments that aren't already explicitly modeled by this structure.
     /// The main categories of these today are logger configurations
@@ -89,16 +109,15 @@ public static MSBuildArgs AnalyzeMSBuildArguments(IEnumerable<string> forwardedA
         }
 
         var parseResult = fakeCommand.Parse([.. forwardedAndUserFacingArgs], _analysisParsingConfiguration);
-        var globalProperties = parseResult.GetResult("--property") is OptionResult propResult ? propResult.GetValueOrDefault<ReadOnlyDictionary<string, string>?>() : null;
-        var restoreProperties = parseResult.GetResult("--restoreProperty") is OptionResult restoreResult ? restoreResult.GetValueOrDefault<ReadOnlyDictionary<string, string>?>() : null;
-        var requestedTargets = parseResult.GetResult("--target") is OptionResult targetResult ? targetResult.GetValueOrDefault<string[]?>() : null;
+        var globalProperties = TryGetValue<ReadOnlyDictionary<string, string>?>("--property");
+        var restoreProperties = TryGetValue<ReadOnlyDictionary<string, string>?>("--restoreProperty");
+        var requestedTargets = TryGetValue<string[]?>("--target");
         var getProperty = TryGetValue<string[]>("--getProperty");
         var getItem = TryGetValue<string[]?>("--getItem");
         var getTargetResult = TryGetValue<string[]?>("--getTargetResult");
         var getResultOutputFile = TryGetValue<string[]?>("--getResultOutputFile");
-        var verbosity = parseResult.GetResult("--verbosity") is OptionResult verbosityResult
-            ? verbosityResult.GetValueOrDefault<VerbosityOptions?>()
-            : null;
+        var verbosity = TryGetValue<VerbosityOptions?>("--verbosity");
+        var nologo = TryGetValue<bool?>("--no-logo") ?? true; // Default to nologo if not specified
         var otherMSBuildArgs = parseResult.UnmatchedTokens.ToArray();
         return new MSBuildArgs(
             properties: globalProperties,
@@ -109,8 +128,12 @@ public static MSBuildArgs AnalyzeMSBuildArguments(IEnumerable<string> forwardedA
             getTargetResult: getTargetResult,
             getResultOutputFile: getResultOutputFile,
             otherMSBuildArgs: otherMSBuildArgs,
-            verbosity: verbosity);
+            verbosity: verbosity,
+            noLogo: nologo);
 
+        /// We can't use <see cref="ParseResult.GetResult(string)"/> to check if the names of the options we care
+        /// about were specified, because if they weren't specified it throws.
+        /// So we first check if the option was specified, and only then get its value.
         T? TryGetValue<T>(string name)
         {
             return options.Any(o => o.Name == name) ? parseResult.GetValue<T>(name) : default;
@@ -120,19 +143,19 @@ public static MSBuildArgs AnalyzeMSBuildArguments(IEnumerable<string> forwardedA
 
     public static MSBuildArgs FromProperties(ReadOnlyDictionary<string, string>? properties)
     {
-        return new MSBuildArgs(properties, null, null, null, null, null, null, null, null);
+        return new MSBuildArgs(properties, null, null, null, null, null, null, null, noLogo: false, null);
     }
 
     public static MSBuildArgs FromOtherArgs(params ReadOnlySpan<string> args)
     {
-        return new MSBuildArgs(null, null, null, null, null, null, null, null, args.ToArray());
+        return new MSBuildArgs(null, null, null, null, null, null, null, null, noLogo: false, args.ToArray());
     }
     public static MSBuildArgs FromVerbosity(VerbosityOptions verbosity)
     {
-        return new MSBuildArgs(null, null, null, null, null, null, null, verbosity, null);
+        return new MSBuildArgs(null, null, null, null, null, null, null, verbosity, noLogo: false, null);
     }
 
-    public static readonly MSBuildArgs ForHelp = new(null, null, null, null, null, null, null, null, ["--help"]);
+    public static readonly MSBuildArgs ForHelp = new(null, null, null, null, null, null, null, null, noLogo: true, ["--help"]);
 
     /// <summary>
     /// Completely replaces the MSBuild arguments with the provided <paramref name="newArgs"/>.
@@ -148,6 +171,7 @@ public MSBuildArgs CloneWithExplicitArgs(string[] newArgs)
             getTargetResult: GetTargetResult,
             getResultOutputFile: GetResultOutputFile,
             otherMSBuildArgs: newArgs,
+            noLogo: NoLogo,
             verbosity: Verbosity);
     }
 
@@ -168,6 +192,7 @@ public MSBuildArgs CloneWithAdditionalArgs(params string[] additionalArgs)
                 GetTargetResult,
                 GetResultOutputFile,
                 Verbosity,
+                NoLogo,
                 OtherMSBuildArgs.ToArray());
         }
 
@@ -180,6 +205,7 @@ public MSBuildArgs CloneWithAdditionalArgs(params string[] additionalArgs)
             GetTargetResult,
             GetResultOutputFile,
             Verbosity,
+            NoLogo,
             [.. OtherMSBuildArgs, .. additionalArgs]);
     }
 
@@ -197,6 +223,7 @@ public MSBuildArgs CloneWithAdditionalRestoreProperties(ReadOnlyDictionary<strin
                 GetTargetResult,
                 GetResultOutputFile,
                 Verbosity,
+                NoLogo,
                 OtherMSBuildArgs.ToArray());
         }
         if (RestoreGlobalProperties is null)
@@ -210,6 +237,7 @@ public MSBuildArgs CloneWithAdditionalRestoreProperties(ReadOnlyDictionary<strin
                 GetTargetResult,
                 GetResultOutputFile,
                 Verbosity,
+                NoLogo,
                 OtherMSBuildArgs.ToArray());
         }
 
@@ -227,6 +255,7 @@ public MSBuildArgs CloneWithAdditionalRestoreProperties(ReadOnlyDictionary<strin
             GetTargetResult,
             GetResultOutputFile,
             Verbosity,
+            NoLogo,
             OtherMSBuildArgs.ToArray());
     }
 
@@ -244,6 +273,7 @@ public MSBuildArgs CloneWithAdditionalProperties(ReadOnlyDictionary<string, stri
                 GetTargetResult,
                 GetResultOutputFile,
                 Verbosity,
+                NoLogo,
                 OtherMSBuildArgs.ToArray());
         }
         if (GlobalProperties is null)
@@ -257,6 +287,7 @@ public MSBuildArgs CloneWithAdditionalProperties(ReadOnlyDictionary<string, stri
                 GetTargetResult,
                 GetResultOutputFile,
                 Verbosity,
+                NoLogo,
                 OtherMSBuildArgs.ToArray());
         }
 
@@ -274,6 +305,7 @@ public MSBuildArgs CloneWithAdditionalProperties(ReadOnlyDictionary<string, stri
             GetTargetResult,
             GetResultOutputFile,
             Verbosity,
+            NoLogo,
             OtherMSBuildArgs.ToArray());
     }
 
@@ -291,6 +323,7 @@ public MSBuildArgs CloneWithAdditionalTargets(params ReadOnlySpan<string> additi
             GetTargetResult,
             GetResultOutputFile,
             Verbosity,
+            NoLogo,
             OtherMSBuildArgs.ToArray());
     }
 
@@ -305,6 +338,22 @@ public MSBuildArgs CloneWithVerbosity(VerbosityOptions newVerbosity)
             GetTargetResult,
             GetResultOutputFile,
             newVerbosity,
+            NoLogo,
+            OtherMSBuildArgs.ToArray());
+    }
+
+    public MSBuildArgs CloneWithNoLogo(bool noLogo)
+    {
+        return new MSBuildArgs(
+            GlobalProperties,
+            RestoreGlobalProperties,
+            RequestedTargets,
+            GetProperty,
+            GetItem,
+            GetTargetResult,
+            GetResultOutputFile,
+            Verbosity,
+            noLogo,
             OtherMSBuildArgs.ToArray());
     }