public static string RichTextSubString(this string text, int length)
{
var m = new RichTextSubStringMaker(text);
for (int i = 0; i < length; i++)
{
m.Consume();
}
return(m.GetRichText());
}
public static int RichTextLength(this string text)
{
var m = new RichTextSubStringMaker(text);
var length = 0;
while (m.IsConsumable())
{
if (m.Consume())
{
length += 1;
}
}
return(length);
}