is it safe to close stdin

[Skaperen]

in a program that usually opens, reads and closes files, it sometimes reads stdin. it will only read it to EOF once. is it then safe to close it? if so, then i can omit the test to see if it is stdin. i know it's a cost one way or the other, but a small one. but the test just looks silly.

[Gribouillis]

I've never heard that closing stdin would be unsafe, so do it!