From 2955ddebc32837b66d9bacb4e925ad0ed0033168 Mon Sep 17 00:00:00 2001
From: Erlang/OTP <otp@erlang.org>
Date: Tue, 23 Jun 2015 10:24:26 +0200
Subject: Prepare release

---
 lib/kernel/doc/src/notes.xml | 128 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 128 insertions(+)

(limited to 'lib/kernel')

diff --git a/lib/kernel/doc/src/notes.xml b/lib/kernel/doc/src/notes.xml
index 81cea84cb0..b8db22aba7 100644
--- a/lib/kernel/doc/src/notes.xml
+++ b/lib/kernel/doc/src/notes.xml
@@ -31,6 +31,134 @@
   </header>
   <p>This document describes the changes made to the Kernel application.</p>
 
+<section><title>Kernel 4.0</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Fix error handling in <c>file:read_line/1</c> for Unicode
+	    contents.</p>
+          <p>
+	    Own Id: OTP-12144</p>
+        </item>
+        <item>
+          <p>
+	    Introduce <c>os:getenv/2</c> which is similar to
+	    <c>os:getenv/1</c> but returns the passed default value
+	    if the required environment variable is undefined.</p>
+          <p>
+	    Own Id: OTP-12342</p>
+        </item>
+        <item>
+          <p>
+	    It is now possible to paste text in JCL mode (using
+	    Ctrl-Y) that has been copied in the previous shell
+	    session. Also a bug that caused the JCL mode to crash
+	    when pasting text has been fixed.</p>
+          <p>
+	    Own Id: OTP-12673</p>
+        </item>
+        <item>
+          <p>
+	    Ensure that each segment of an IPv6 address when parsed
+	    from a string has a maximum of 4 hex digits</p>
+          <p>
+	    Own Id: OTP-12773</p>
+        </item>
+      </list>
+    </section>
+
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    New BIF: <c>erlang:get_keys/0</c>, lists all keys
+	    associated with the process dictionary. Note:
+	    <c>erlang:get_keys/0</c> is auto-imported.</p>
+          <p>
+	    *** POTENTIAL INCOMPATIBILITY ***</p>
+          <p>
+	    Own Id: OTP-12151 Aux Id: seq12521 </p>
+        </item>
+        <item>
+          <p>
+	    The internal group to user_drv protocol has been changed
+	    to be synchronous in order to guarantee that output sent
+	    to a process implementing the user_drv protocol is
+	    printed before replying. This protocol is used by the
+	    standard_output device and the ssh application when
+	    acting as a client. </p>
+          <p>
+	    This change changes the previous unlimited buffer when
+	    printing to standard_io and other devices that end up in
+	    user_drv to 1KB.</p>
+          <p>
+	    *** POTENTIAL INCOMPATIBILITY ***</p>
+          <p>
+	    Own Id: OTP-12240</p>
+        </item>
+        <item>
+	    <p>The <c>inflateInit/2</c> and <c>deflateInit/6</c>
+	    functions now accepts a WindowBits argument equal to 8
+	    and -8.</p>
+          <p>
+	    Own Id: OTP-12564</p>
+        </item>
+        <item>
+          <p>
+	    Map error logger warnings to warning messages by default.</p>
+          <p>
+	    Own Id: OTP-12755</p>
+        </item>
+        <item>
+          <p>
+	    Map beam error logger warnings to warning messages by
+	    default. Previously these messages were mapped to the
+	    error channel by default.</p>
+          <p>
+	    Own Id: OTP-12781</p>
+        </item>
+        <item>
+          <p>
+	    gen_tcp:shutdown/2 is now asynchronous</p>
+          <p>
+	    This solves the following problems with the old
+	    implementation:</p>
+          <p>
+	    It doesn't block when the TCP peer is idle or slow. This
+	    is the expected behaviour when shutdown() is called: the
+	    caller needs to be able to continue reading from the
+	    socket, not be prevented from doing so.</p>
+          <p>
+	    It doesn't truncate the output. The current version of
+	    gen_tcp:shutdown/2 will truncate any outbound data in the
+	    driver queue after about 10 seconds if the TCP peer is
+	    idle of slow. Worse yet, it doesn't even inform anyone
+	    that the data has been truncated: 'ok' is returned to the
+	    caller; and a FIN rather than an RST is sent to the TCP
+	    peer.</p>
+          <p>
+	    *** POTENTIAL INCOMPATIBILITY ***</p>
+          <p>
+	    Own Id: OTP-12797</p>
+        </item>
+        <item>
+          <p>
+	    There are many cases where user code needs to be able to
+	    distinguish between a socket that was closed normally and
+	    one that was aborted. Setting the option
+	    {show_econnreset, true} enables the user to receive
+	    ECONNRESET errors on both active and passive sockets.</p>
+          <p>
+	    Own Id: OTP-12843</p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Kernel 3.2</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
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