/* Close standard input, rewinding seekable stdin if necessary.
- Copyright (C) 2007, 2009 Free Software Foundation, Inc.
+ Copyright (C) 2007, 2009-2011 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
For example, POSIX requires that these two commands behave alike:
(sed -ne 1q; cat) < file
- tail -n 1 file
+ tail -n +2 file
Since close_stdin is commonly registered via 'atexit', POSIX
and the C standard both say that it should not call 'exit',
/* There is no need to flush stdin if we can determine quickly that stdin's
input buffer is empty; in this case we know that if stdin is seekable,
- fseeko (stdin, 0, SEEK_CUR) == lseek (0, 0, SEEK_CUR). */
+ (fseeko (stdin, 0, SEEK_CUR), ftello (stdin))
+ == lseek (0, 0, SEEK_CUR). */
if (freadahead (stdin) > 0)
{
/* Only attempt flush if stdin is seekable, as fflush is entitled to