public class RichTextPanelAttribute : System.Attribute
{
	public string Pattern { get; }
	public RichTextPanelAttribute( string pattern )
	{
		Pattern = pattern;
	}

	public RichTextPanelAttribute( string startsWith, string endsWith )
	{
		Pattern = $"{System.Text.RegularExpressions.Regex.Escape( startsWith )}(.+?){System.Text.RegularExpressions.Regex.Escape( endsWith )}";
	}
}