%<regs=%list()>\
"%smatch(a+,heianzi)" = "3"
"%smatch([^/]+$,/heinzi/deinzi/test.jpg,%&regs) %regs[0]" = "15 test.jpg"
"%smatch(%'a+(b+)c+',aaabbbccc,%&regs) %regs[1]" = "0 bbb"
