public IEnumerable <ISegment> GetDeletableSegments(ISegment segment)
{
if (startAnchor == null)
{
yield return(segment);
yield break;
}
if (segment.EndOffset <= startAnchor.Offset || segment.Offset >= endAnchor.Offset)
{
yield break;
}
var range = new LineRange {
start = Math.Max(segment.Offset, startAnchor.Offset),
end = Math.Min(segment.EndOffset, endAnchor.Offset)
};
yield return(range.SimpleSegment());
}
