tsearch
static int tsearch(Char *, COMMAND, int);
tsearch(word, LIST, BUFSIZ - len - 1); /* NUL */
nitems = tsearch(word, RECOGNIZE, BUFSIZ - len - 1); /* NUL */
void *tsearch(const void *, void **,
PROTO_DEPRECATED(tsearch);
tsearch(last, &sp->_ordered_pairs, compare_data);
tsearch(target + n, &sp->_ordered_pairs, compare_data);
if (tsearch(fs, &MyCache, cmp_format) != 0) {