while ((ff = fts_read(f)) != NULL) {
		path = ff->fts_path + 2;
		switch (ff->fts_info) {

		/*
		 * Symbolic links require various sanity checks,
		 * then get handled just like regular files.
		 */
		case FTS_SL:
			if (realpath(path, buf) == NULL) {
				if (warnings)
					say(path, "&realpath");
				continue;
			}
			if (strncmp(buf, basedir, basedir_len) != 0
#ifdef READ_ALLOWED_PATH
			    && !read_allowed(buf)
#endif
			) {
				if (warnings) say("",
				    "%s: outside base directory", buf);
				continue;
			}
			/* Use logical inode to avoid mpages dupe. */
			if (stat(path, ff->fts_statp) == -1) {
				if (warnings)
					say(path, "&stat");
				continue;
			}
			/* FALLTHROUGH */

		/*
		 * If we're a regular file, add an mlink by using the
		 * stored directory data and handling the filename.
		 */
		case FTS_F:
			if ( ! strcmp(path, MANDOC_DB))
				continue;
			if ( ! use_all && ff->fts_level < 2) {
				if (warnings)
					say(path, "Extraneous file");
				continue;
			}
			gzip = 0;
			fsec = NULL;
			while (fsec == NULL) {
				fsec = strrchr(ff->fts_name, '.');
				if (fsec == NULL || strcmp(fsec+1, "gz"))
					break;
				gzip = 1;
				*fsec = '\0';
				fsec = NULL;
			}
			if (fsec == NULL) {
				if ( ! use_all) {
					if (warnings)
						say(path,
						    "No filename suffix");
					continue;
				}
			} else if ( ! strcmp(++fsec, "html")) {
				if (warnings)
					say(path, "Skip html");
				continue;
			} else if ( ! strcmp(fsec, "ps")) {
				if (warnings)
					say(path, "Skip ps");
				continue;
			} else if ( ! strcmp(fsec, "pdf")) {
				if (warnings)
					say(path, "Skip pdf");
				continue;
			} else if ( ! use_all &&
			    ((dform == FORM_SRC &&
			      strncmp(fsec, dsec, strlen(dsec))) ||
			     (dform == FORM_CAT && strcmp(fsec, "0")))) {
				if (warnings)
					say(path, "Wrong filename suffix");
				continue;
			} else
				fsec[-1] = '\0';

			mlink = mandoc_calloc(1, sizeof(struct mlink));
			if (strlcpy(mlink->file, path,
			    sizeof(mlink->file)) >=
			    sizeof(mlink->file)) {
				say(path, "Filename too long");
				free(mlink);
				continue;
			}
			mlink->dform = dform;
			mlink->dsec = dsec;
			mlink->arch = arch;
			mlink->name = ff->fts_name;
			mlink->fsec = fsec;
			mlink->gzip = gzip;
			mlink_add(mlink, ff->fts_statp);
			continue;