j_waitj
static int j_waitj(Job *, int, const char *);
rv = j_waitj(j, JW_NONE, "jw:last proc");
rv = j_waitj(j, JW_NONE, "jw:waitlast");
rv = j_waitj(j, flags, "jw:waitfor");
rv = j_waitj(j, JW_NONE, "jw:resume");