+ size_t sz, i;
+
+ switch (im) {
+ case KEY_Nd:
+ return mandoc_strdup(page->desc);
+ case KEY_Nm:
+ input = page->name;
+ break;
+ case KEY_sec:
+ input = page->sect;
+ break;
+ case KEY_arch:
+ input = page->arch;
+ if (input == NULL)
+ input = "all\0";
+ break;
+ default:
+ input = NULL;
+ break;
+ }
+
+ if (input != NULL) {
+ sz = lstlen(input, 3) + 1;
+ output = mandoc_malloc(sz);
+ i = 0;
+ lstcat(output, &i, input, " # ");
+ output[i++] = '\0';
+ assert(i == sz);
+ return output;
+ }