From e13ac93e9a4b4291d45fbd66dd9f397861b4ff6d Mon Sep 17 00:00:00 2001
From: Fred Drake <fdrake@acm.org>
Date: Wed, 1 May 2002 03:33:02 +0000
Subject: [PATCH] Explain what os.read() returns at end of file. This closes SF
 bug #550409.

---
 Doc/lib/libos.tex | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Doc/lib/libos.tex b/Doc/lib/libos.tex
index ca9a206d854c..d40aa076b1fc 100644
--- a/Doc/lib/libos.tex
+++ b/Doc/lib/libos.tex
@@ -453,7 +453,9 @@ Availability: \UNIX{}, Windows.
 
 \begin{funcdesc}{read}{fd, n}
 Read at most \var{n} bytes from file descriptor \var{fd}.
-Return a string containing the bytes read.
+Return a string containing the bytes read.  If the end of the file
+referred to by \var{fd} has been reached, an empty string is
+returned.
 Availability: Macintosh, \UNIX{}, Windows.
 
 Note: this function is intended for low-level I/O and must be applied
-- 
2.47.3