CommentReflowerTest.TestTextPoint.CharLeft C# (CSharp) Method

        public void CharLeft(int i)
        {
            if (i < 0)
            {
                CharRight(-i);
                return;
            }
            while (i>0)
            {
                if ( i <= mCharPosition )
                {
                    mCharPosition -= i;
                    i=0;
                }
                else
                {
                    i -= mCharPosition;
                    if (mLineNum == 1)
                    {
                        mCharPosition = 0;
                        return;
                    }
                    else
                    {
                        mLineNum--;
                        mCharPosition = this.LineLength;
                        i--;// the carriage return moves to the end of the previous line
                    }
                }
            }
        }