|  | @@ -49,7 +49,7 @@ namespace Grpc.Tools.Tests
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				|  |  |              ExecuteExpectSuccess();
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				|  |  |              Assert.That(_task.LastPathToTool, Does.Match(@"protoc(.exe)?$"));
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				|  |  |              Assert.That(_task.LastResponseFile, Is.EqualTo(new[] {
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				|  |  | -                "--csharp_out=outdir", "a.proto" }));
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				|  |  | +                "--csharp_out=outdir", "--error_format=msvs", "a.proto" }));
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				|  |  |          }
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				|  |  |  
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				|  |  |          [Test]
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				|  | @@ -58,7 +58,7 @@ namespace Grpc.Tools.Tests
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				|  |  |              _task.ProtoBuf = Utils.MakeSimpleItems("a.proto", "foo/b.proto");
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				|  |  |              ExecuteExpectSuccess();
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				|  |  |              Assert.That(_task.LastResponseFile, Is.EqualTo(new[] {
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				|  |  | -                "--csharp_out=outdir", "a.proto", "foo/b.proto" }));
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				|  |  | +                "--csharp_out=outdir", "--error_format=msvs", "a.proto", "foo/b.proto" }));
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				|  |  |          }
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				|  |  |  
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				|  |  |          [Test]
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				|  | @@ -68,7 +68,7 @@ namespace Grpc.Tools.Tests
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				|  |  |              ExecuteExpectSuccess();
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				|  |  |              Assert.That(_task.LastResponseFile, Is.EqualTo(new[] {
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				|  |  |                  "--csharp_out=outdir", "--proto_path=/path1",
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				|  |  | -                "--proto_path=/path2", "a.proto" }));
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				|  |  | +                "--proto_path=/path2", "--error_format=msvs", "a.proto" }));
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				|  |  |          }
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				|  |  |  
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				|  |  |          [TestCase("Cpp")]
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				|  | @@ -87,7 +87,7 @@ namespace Grpc.Tools.Tests
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				|  |  |              ExecuteExpectSuccess();
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				|  |  |              gen = gen.ToLowerInvariant();
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				|  |  |              Assert.That(_task.LastResponseFile, Is.EqualTo(new[] {
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				|  |  | -                $"--{gen}_out=outdir", $"--{gen}_opt=foo,bar", "a.proto" }));
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				|  |  | +                $"--{gen}_out=outdir", $"--{gen}_opt=foo,bar", "--error_format=msvs", "a.proto" }));
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				|  |  |          }
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				|  |  |  
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				|  |  |          [Test]
 |