line caps for eps figures

I am saving figures from Matlab as EPS files (print('-depsc2',fig_name) ) with the 'painters' renderer. When I open those figures in Illustrator, the lines default to "projecting caps", which extend past their end. Since these lines represent data (like error bars on a plot), the end is very important and it should be set to "butt cap" (which does not project).

My question is: how can I change this?

Here's a toy example:

x = 1:10;

y = ones(1,10);

plot(x,y),

xlim([0 11]),

set(gcf,'PaperPosition',[0 0 2 2]),

print('-depsc2','toy.eps');

Then open the eps in Illustrator: the line has a projecting cap. Examining the postscript in Matlab reveals setlinecap is always 2, where I need these numbers to be zeros (zero for butt cap, 1 for round, 2 for projecting).

Thanks!