From a11a0860d1decc554e7fe52aa530c765a57807ff Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 20 Jun 2002 12:14:33 +0000
Subject: [PATCH] * ext/readline/readline.c (readline_readline): get rid of  
 libreadline's bug. (ruby-bugs-ja:PR#268)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_6@2588 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog               | 5 +++++
 ext/readline/readline.c | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 93c90512e2..6d56d665ab 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Jun 20 21:09:37 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
+
+	* ext/readline/readline.c (readline_readline): get rid of
+	  libreadline's bug. (ruby-bugs-ja:PR#268)
+
 Thu Jun 20 17:10:27 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
 
 	* lib/ftool.rb (BUFSIZE): tuning, set buffer length to 8192.
diff --git a/ext/readline/readline.c b/ext/readline/readline.c
index 49e3c04fed..b5e749a312 100644
--- a/ext/readline/readline.c
+++ b/ext/readline/readline.c
@@ -1,6 +1,7 @@
 /* readline.c -- GNU Readline module
    Copyright (C) 1997-1998  Shugo Maeda */
 
+#include <errno.h>
 #include <stdio.h>
 #include <readline/readline.h>
 #include <readline/history.h>
@@ -42,6 +43,9 @@ readline_readline(argc, argv, self)
     if (rb_scan_args(argc, argv, "02", &tmp, &add_hist) > 0) {
 	prompt = STR2CSTR(tmp);
     }
+
+    if (!isatty(0) && errno == EBADF) rb_raise(rb_eIOError, "stdin closed");
+
     buff = readline(prompt);
     if (RTEST(add_hist) && buff) {
 	add_history(buff);