fprintf(stderr, "%s: %3u%% (%u/%u)%s%s",
                                progress->title, percent, n,
                                progress->total, tp, eol);
+                       fflush(stderr);
                        progress_update = 0;
                        return 1;
                }
        } else if (progress_update) {
                fprintf(stderr, "%s: %u%s%s", progress->title, n, tp, eol);
+               fflush(stderr);
                progress_update = 0;
                return 1;
        }
        if (!progress) {
                /* unlikely, but here's a good fallback */
                fprintf(stderr, "%s...\n", title);
+               fflush(stderr);
                return NULL;
        }
        progress->title = title;