in src/Microsoft.NET.Sdk.Functions.Generator/PathUtility.cs [9:24]
internal static string MakeRelativePath(string fromPath, string toPath)
{
fromPath = fromPath.TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar) + Path.DirectorySeparatorChar;
Uri fromUri = new Uri(fromPath);
Uri toUri = new Uri(toPath);
if (fromUri.Scheme != toUri.Scheme) { return toPath; } // path can't be made relative.
Uri relativeUri = fromUri.MakeRelativeUri(toUri);
// This will generate a path using / rather than \.
// This is okay on both Windows and Unix
var relativePath = Uri.UnescapeDataString(relativeUri.ToString());
return relativePath;
}