ulib/linenoise/linenoise.c

161     int history_index;  /* The history index we are currently editing. */
761         free(history[history_len - 1 - l->history_index]);
762         history[history_len - 1 - l->history_index] = strdup(l->buf);
764         l->history_index += (dir == LINENOISE_HISTORY_PREV) ? 1 : -1;
765         if (l->history_index < 0) {
766             l->history_index = 0;
768         } else if (l->history_index >= history_len) {
769             l->history_index = history_len-1;
772         strncpy(l->buf,history[history_len - 1 - l->history_index],l->buflen);
841     l.history_index = 0;