STAILQ_HEAD_INITIALIZER
struct domainhead domains = STAILQ_HEAD_INITIALIZER(domains);
static STAILQ_HEAD(, qentry) queue = STAILQ_HEAD_INITIALIZER(queue);
static STAILQ_HEAD(, term) terms = STAILQ_HEAD_INITIALIZER(terms);
static struct pattern_list include = STAILQ_HEAD_INITIALIZER(include);
static struct pattern_list exclude = STAILQ_HEAD_INITIALIZER(exclude);
.sig2_delims = STAILQ_HEAD_INITIALIZER(GlobalSign.sig2_delims)