Preparing a seminar on binomial coefficient extension --- avoiding the nuclear option? --- for a computer science audience, I prepared plots of re, im, abs, arg parts of the gamma function qua function of a complex variable. It struck me that the arg plot would be much improved if one could avoid it snapping back to the principal value when passing thru' angles (+/1)pi --- proceeding instead continuously in whichever direction happened to be current at that point. How can arg() be hacked to achieve such an effect? [ Note that arg(gamma(z)) really is discontinuous around the poles at non-positive integer z --- but that is not an issue here, since special measures must be taken in that neighbourhood anyway. Rather appropriate subject line for the list, what? ] Fred Lunnon