# HG changeset patch
# User Eric Blake <eblake@redhat.com>
# Date 1312975709 21600
# Node ID fcabcdea285ec38c0181cbef7b83fc37f1a63d5e
# Parent  1460b4d13112ef226f1376adb0cdb287ffc44277
closein: correct comments

* lib/closein.c (close_stdin): Improve comments.

Signed-off-by: Eric Blake <eblake@redhat.com>

diff --git a/ChangeLog b/ChangeLog
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-08-10  Eric Blake  <eblake@redhat.com>
+
+	closein: correct comments
+	* lib/closein.c (close_stdin): Improve comments.
+
 2011-08-09  Bruno Haible  <bruno@clisp.org>
 
 	More tests for 'fseeko'.
diff --git a/lib/closein.c b/lib/closein.c
--- a/lib/closein.c
+++ b/lib/closein.c
@@ -55,7 +55,7 @@
    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',
@@ -82,7 +82,8 @@
 
   /* 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