collect TeX output

Hi, It seems that GiNaC, when (for example) collecting expressions and then printing them to LaTeX adds some braces in additions to parentheses. For example symbol x("x"), y("y"), t("t"); ex e = x*t + y*t; collect(e,t).print(GiNaC::print_latex()); ouputs t {(y+x)} Is there any way (an option?) to remove the extra braces? Indeed, they force TeX NOT to BREAK the expression (i.e., it must fit on a single line) which is problematic when the expression is long. Thanks, ChriS