t / t4101 / diff.3-2on commit pre-POSIX.1-2001 systems do not have <sys/select.h> (2600973)
   1--- a/frotz
   2+++ b/frotz
   3@@ -1,3 +1,2 @@
   4 a
   5-c
   6 b
   7\ No newline at end of file