/**
 * Sets the position of the selection anchor (i.e. position the selection was started at)
 */
public void setSelectionPos(int p_146199_1_)
{
    int i = this.text.length();

    if (p_146199_1_ > i)
    {
        p_146199_1_ = i;
    }

    if (p_146199_1_ < 0)
    {
        p_146199_1_ = 0;
    }

    this.selectionEnd = p_146199_1_;

    if (this.fontRendererInstance != null)
    {
        if (this.lineScrollOffset > i)
        {
            this.lineScrollOffset = i;
        }

        // Replaced this
        //int j = this.getWidth();
        //String s = this.fontRendererInstance.trimStringToWidth(this.text.substring(this.lineScrollOffset), j);
        int j = this.getWidth() - this.fontRendererInstance.getCharWidth('_');
        String s = this.fontRendererInstance.trimStringToWidth(this.text.substring(this.lineScrollOffset), j, true);
        
        
        int k = s.length() + this.lineScrollOffset;

        if (p_146199_1_ == this.lineScrollOffset)
        {
            this.lineScrollOffset -= this.fontRendererInstance.trimStringToWidth(this.text, j, true).length();
        }

        if (p_146199_1_ > k)
        {
            this.lineScrollOffset += p_146199_1_ - k;
        }
        else if (p_146199_1_ <= this.lineScrollOffset)
        {
            this.lineScrollOffset -= this.lineScrollOffset - p_146199_1_;
        }

        this.lineScrollOffset = MathHelper.clamp_int(this.lineScrollOffset, 0, i);
    }
}