debugger/enhanced_text_model/src/main/com/thesett/aima/logic/fol/wam/debugger/text/AttributeGridImpl.java
private AttributeSet getColumnAttributeOrNull(int c)
    {
        if ((c >= 0) && (c < columnAttributes.size()))
        {
            return columnAttributes.get(c);
        }
        else
        {
            return null;
        }
    }
private AttributeSet getColumnAttributeOrNull(int c)
    {
        if ((c >= 0) && (c < columnAttributes.size()))
        {
            return columnAttributes.get(c);
        }
        else
        {
            return null;
        }
    }
Gets a columns attribute if possible, without overflowing the underlying array.

@param  c The column to get the attributes for.

@return The column attributes or <tt>null</tt> if none are set.