Fix lost characters when emitting folded scalars with carriage returns.

YamlDotNet.Core/Emitter.cs

@@ -1131,10 +1131,10 @@ namespace YamlDotNet.Core
 				{
 					if (!previous_break && !leadingSpaces && character == '\n')
 					{
-						do
+						while ((i + 1) < value.Length && IsBreak(value[i + 1]))
 						{
 							++i;
-						} while (i < value.Length && IsBreak(value[i]));
+						};
 
 						if (i >= value.Length || value[i] != ' ')
 						{

YamlDotNet.UnitTests/Core/EmitterTests.cs

@@ -23,6 +23,7 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using Xunit;
+using Xunit.Extensions;
 using YamlDotNet.Core;
 using YamlDotNet.Core.Events;
 
@@ -170,5 +171,27 @@ namespace YamlDotNet.UnitTests
 		{
 			ParseAndEmit("test14.yaml");
 		}
+
+		[Theory]
+		[InlineData("LF hello\nworld")]
+		[InlineData("CRLF hello\r\nworld")]
+		public void FoldedStyleDoesNotLooseCharacters(string text)
+		{
+			var buffer = new StringWriter();
+			var emitter = new Emitter(buffer);
+			emitter.Emit(new StreamStart());
+			emitter.Emit(new DocumentStart(null, null, true));
+			emitter.Emit(new SequenceStart(null, null, false, SequenceStyle.Block));
+
+			emitter.Emit(new Scalar(null, null, text, ScalarStyle.Folded, true, false));
+
+			emitter.Emit(new SequenceEnd());
+			emitter.Emit(new DocumentEnd(true));
+			emitter.Emit(new StreamEnd());
+
+			var yaml = buffer.ToString();
+			Console.WriteLine(yaml);
+			Assert.True(yaml.Contains("world"));
+		}
 	}
 }