Multiline simple key

[kosorin]

I want new line as a key

"\n": xyz

but I always get something like this

? >2

: xyz

even if I emit scalar key with DoubleQuoted style, it's still complex key

? "\n"
: xyz

I think simple key can be multiline and this code should be deleted.

YamlDotNet/YamlDotNet/Core/Emitter.cs

Lines 1687 to 1690 in e32f92e

	if (scalarData.isMultiline)
	{
	return false;
	}

Otherwise this if will never be true.

YamlDotNet/YamlDotNet/Core/Emitter.cs

Lines 892 to 895 in e32f92e

	if (isSimpleKeyContext && scalarData.isMultiline)
	{
	style = ScalarStyle.DoubleQuoted;
	}

[EdwardCooke]

The following code illustrates the single line key not roundtripping as expected

using YamlDotNet.Serialization;

var deserializer = new DeserializerBuilder().Build();
var serializer = new SerializerBuilder().Build();


var yaml = "\"\\n\": xyz";
var a = deserializer.Deserialize<object>(yaml);
var b = serializer.Serialize(a);
Console.WriteLine(yaml);
Console.WriteLine("====");
Console.WriteLine(b);
Console.WriteLine("====");
var c = deserializer.Deserialize<object>(b);
var d = serializer.Serialize(c);
Console.WriteLine(d);
Console.WriteLine("====");

var e = new Test { Prop = "xyz" };
var f = serializer.Serialize(e);
Console.WriteLine(f);
Console.WriteLine("====");


public class Test
{
    [YamlMember(Alias = "\n")]
    public string Prop { get; set; }
}

Results:

"\n": xyz
====
? >2

: xyz

====
'': xyz

====
? '

'
: xyz

====