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<h3>Table of Contents</h3>
<ul class="link-list" role="directory">
<li><a href="#label-NEWS+for+Ruby+1.9.2">NEWS for Ruby 1.9.2</a>
<li><a href="#label-Changes+since+the+1.9.1+release">Changes since the 1.9.1 release</a>
<li><a href="#label-Library+updates+-28outstanding+ones+only-29">Library updates (outstanding ones only)</a>
<li><a href="#label-Language+changes">Language changes</a>
<li><a href="#label-Compilation+options">Compilation options</a>
<li><a href="#label-Compatibility+issues+-28excluding+feature+bug+fixes-29">Compatibility issues (excluding feature bug fixes)</a>
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<li><a href="./CONTRIBUTING_md.html">CONTRIBUTING</a>
<li><a href="./COPYING.html">COPYING</a>
<li><a href="./COPYING_ja.html">COPYING.ja</a>
<li><a href="./LEGAL.html">LEGAL</a>
<li><a href="./NEWS.html">NEWS</a>
<li><a href="./NEWS-1_8_7.html">NEWS-1.8.7</a>
<li><a href="./NEWS-1_9_1.html">NEWS-1.9.1</a>
<li><a href="./NEWS-1_9_2.html">NEWS-1.9.2</a>
<li><a href="./NEWS-1_9_3.html">NEWS-1.9.3</a>
<li><a href="./NEWS-2_0_0.html">NEWS-2.0.0</a>
<li><a href="./NEWS-2_1_0.html">NEWS-2.1.0</a>
<li><a href="./NEWS-2_2_0.html">NEWS-2.2.0</a>
<li><a href="./NEWS-2_3_0.html">NEWS-2.3.0</a>
<li><a href="./NEWS-2_4_0.html">NEWS-2.4.0</a>
<li><a href="./NEWS-2_5_0.html">NEWS-2.5.0</a>
<li><a href="./NEWS-2_6_0.html">NEWS-2.6.0</a>
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<li><a href="./syntax/exceptions_rdoc.html">exceptions</a>
<li><a href="./syntax/literals_rdoc.html">literals</a>
<li><a href="./syntax/methods_rdoc.html">methods</a>
<li><a href="./syntax/miscellaneous_rdoc.html">miscellaneous</a>
<li><a href="./syntax/modules_and_classes_rdoc.html">modules_and_classes</a>
<li><a href="./syntax/precedence_rdoc.html">precedence</a>
<li><a href="./syntax/refinements_rdoc.html">refinements</a>
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<main role="main" aria-label="Page NEWS-1.9.2">
<h1 id="label-NEWS+for+Ruby+1.9.2"><a href="NEWS.html">NEWS</a> for Ruby 1.9.2<span><a href="#label-NEWS+for+Ruby+1.9.2">¶</a> <a href="#top">↑</a></span></h1>
<p>This document is a list of user visible feature changes made between releases except for bug fixes.</p>
<p>Note that each entry is kept so brief that no reason behind or reference information is supplied with. For a full list of changes with all sufficient information, see the ChangeLog file.</p>
<h2 id="label-Changes+since+the+1.9.1+release">Changes since the 1.9.1 release<span><a href="#label-Changes+since+the+1.9.1+release">¶</a> <a href="#top">↑</a></span></h2>
<h3 id="label-Library+updates+-28outstanding+ones+only-29">Library updates (outstanding ones only)<span><a href="#label-Library+updates+-28outstanding+ones+only-29">¶</a> <a href="#top">↑</a></span></h3>
<ul><li>
<p>builtin classes</p>
<ul><li>
<p><a href="Array.html"><code>Array</code></a></p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p><a href="Array.html#method-i-keep_if"><code>Array#keep_if</code></a></p>
</li><li>
<p><a href="Array.html#method-i-repeated_combination"><code>Array#repeated_combination</code></a></p>
</li><li>
<p><a href="Array.html#method-i-repeated_permutation"><code>Array#repeated_permutation</code></a></p>
</li><li>
<p><a href="Array.html#method-i-rotate"><code>Array#rotate</code></a></p>
</li><li>
<p><a href="Array.html#method-i-rotate-21"><code>Array#rotate!</code></a></p>
</li><li>
<p><a href="Array.html#method-i-select-21"><code>Array#select!</code></a></p>
</li><li>
<p><a href="Array.html#method-i-sort_by-21"><code>Array#sort_by!</code></a></p>
</li></ul>
</li><li>
<p>extended method:</p>
<ul><li>
<p>Array#{uniq,uniq!,product} can take a block.</p>
</li></ul>
</li></ul>
</li><li>
<p><a href="Complex.html"><code>Complex</code></a></p>
<ul><li>
<p>new method:</p>
<ul><li>
<p><a href="Complex.html#method-i-rationalize"><code>Complex#rationalize</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p><a href="Dir.html"><code>Dir</code></a></p>
<ul><li>
<p>new method:</p>
<ul><li>
<p><a href="Dir.html#method-c-home"><code>Dir.home</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p><a href="Encoding.html"><code>Encoding</code></a></p>
<ul><li>
<p>new encodings:</p>
<ul><li>
<p>Big5</p>
</li><li>
<p>Big5-UAO</p>
</li><li>
<p>ISO-2022-JP-KDDI</p>
</li><li>
<p>SJIS-DoCoMo</p>
</li><li>
<p>SJIS-KDDI</p>
</li><li>
<p>SJIS-SoftBank</p>
</li><li>
<p>UTF8-DoCoMo</p>
</li><li>
<p>UTF8-KDDI</p>
</li><li>
<p>UTF8-SoftBank</p>
</li></ul>
</li><li>
<p>new method:</p>
<ul><li>
<p>ascii_compatible?</p>
</li></ul>
</li></ul>
</li><li>
<p><a href="Enumerable.html"><code>Enumerable</code></a></p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p><a href="Enumerable.html#method-i-chunk"><code>Enumerable#chunk</code></a></p>
</li><li>
<p><a href="Enumerable.html#method-i-collect_concat"><code>Enumerable#collect_concat</code></a></p>
</li><li>
<p><a href="Enumerable.html#method-i-each_entry"><code>Enumerable#each_entry</code></a></p>
</li><li>
<p><a href="Enumerable.html#method-i-flat_map"><code>Enumerable#flat_map</code></a></p>
</li><li>
<p><a href="Enumerable.html#method-i-slice_before"><code>Enumerable#slice_before</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p><a href="Enumerator.html"><code>Enumerator</code></a></p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p><a href="Enumerator.html#method-i-peek"><code>Enumerator#peek</code></a></p>
</li><li>
<p><a href="Enumerator.html#method-i-next_values"><code>Enumerator#next_values</code></a></p>
</li><li>
<p><a href="Enumerator.html#method-i-peek_values"><code>Enumerator#peek_values</code></a></p>
</li><li>
<p><a href="Enumerator.html#method-i-feed"><code>Enumerator#feed</code></a></p>
</li><li>
<p><a href="StopIteration.html#method-i-result"><code>StopIteration#result</code></a></p>
</li></ul>
</li><li>
<p>extended method:</p>
<ul><li>
<p>with_index accepts an optional argument that specifies the index number to start with, defaulted to 0.</p>
</li></ul>
</li><li>
<p>incompatible changes:</p>
<ul><li>
<p>rewind now calls the “rewind” method of the enclosed object if defined.</p>
</li><li>
<p>next doesn't clear the position at end.</p>
</li></ul>
</li></ul>
</li><li>
<p><a href="ENV.html"><code>ENV</code></a></p>
<ul><li>
<p>Uses locale's encoding</p>
</li><li>
<p><a href="ENV.html#method-c-5B-5D-3D"><code>ENV.[]=</code></a> raises Errno::{EINVAL,ENOMEM} etc. on failure.</p>
</li><li>
<p>new methods:</p>
<ul><li>
<p><a href="ENV.html#method-c-keep_if"><code>ENV.keep_if</code></a></p>
</li><li>
<p><a href="ENV.html#method-c-select-21"><code>ENV.select!</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p><a href="Float.html"><code>Float</code></a></p>
<ul><li>
<p>new constants:</p>
<ul><li>
<p>Float::INFINITY</p>
</li><li>
<p>Float::NAN</p>
</li></ul>
</li><li>
<p>new method:</p>
<ul><li>
<p><a href="Float.html#method-i-rationalize"><code>Float#rationalize</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p><a href="File.html"><code>File</code></a></p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p><a href="File.html#method-c-realpath"><code>File.realpath</code></a></p>
</li><li>
<p><a href="File.html#method-c-realdirpath"><code>File.realdirpath</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p><a href="GC/Profiler.html"><code>GC::Profiler</code></a></p>
<ul><li>
<p>new method:</p>
<ul><li>
<p><a href="GC/Profiler.html#method-c-total_time"><code>GC::Profiler.total_time</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p><a href="Hash.html"><code>Hash</code></a></p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p><a href="Hash.html#method-i-keep_if"><code>Hash#keep_if</code></a></p>
</li><li>
<p><a href="Hash.html#method-i-select-21"><code>Hash#select!</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p><a href="IO.html"><code>IO</code></a></p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p><a href="IO.html#method-i-autoclose-3D"><code>IO#autoclose=</code></a></p>
</li><li>
<p><a href="IO.html#method-i-autoclose-3F"><code>IO#autoclose?</code></a></p>
</li><li>
<p><a href="IO.html#method-i-fdatasync"><code>IO#fdatasync</code></a></p>
</li><li>
<p><a href="IO.html#method-i-codepoints"><code>IO#codepoints</code></a></p>
</li><li>
<p><a href="IO.html#method-i-each_codepoint"><code>IO#each_codepoint</code></a></p>
</li></ul>
</li><li>
<p>extended method:</p>
<ul><li>
<p><a href="IO.html#method-c-pipe"><code>IO.pipe</code></a> can take a block.</p>
</li></ul>
</li><li>
<p>new modules:</p>
<ul><li>
<p><a href="IO/WaitReadable.html"><code>IO::WaitReadable</code></a></p>
</li><li>
<p><a href="IO/WaitWritable.html"><code>IO::WaitWritable</code></a> They are used to extend non-blocking exceptions.</p>
</li></ul>
</li></ul>
</li><li>
<p><a href="Integer.html"><code>Integer</code></a></p>
<ul><li>
<p>new method:</p>
<ul><li>
<p><a href="Integer.html#method-i-rationalize"><code>Integer#rationalize</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p><a href="Kernel.html"><code>Kernel</code></a></p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p>Kernel#respond_to_missing?</p>
</li><li>
<p>Kernel#singleton_class</p>
</li><li>
<p><a href="Kernel.html#method-i-require_relative"><code>Kernel#require_relative</code></a></p>
</li></ul>
</li><li>
<p>extended method:</p>
<ul><li>
<p>Kernel#respond_to? can be used to detect methods not implemented. For example, Process.respond_to?(:fork) returns false on Windows.</p>
</li></ul>
</li><li>
<p>incompatible changes:</p>
<ul><li>
<p>Kernel#instance_eval yields the receiver.</p>
</li><li>
<p><a href="Kernel.html#method-i-exec"><code>Kernel#exec</code></a></p>
</li><li>
<p><a href="Kernel.html#method-i-spawn"><code>Kernel#spawn</code></a></p>
</li><li>
<p><a href="Kernel.html#method-i-system"><code>Kernel#system</code></a></p>
</li><li>
<p>Kernel#` (`…`) ..etc.</p>
<p>On Windows, the current directory is no longer implicitly prepended to the default command search path, just like other platforms.</p>
</li></ul>
</li></ul>
</li><li>
<p><a href="MatchData.html"><code>MatchData</code></a></p>
<ul><li>
<p>new method:</p>
<ul><li>
<p>MatchData#==</p>
</li></ul>
</li></ul>
</li><li>
<p><a href="Method.html"><code>Method</code></a></p>
<ul><li>
<p>new method:</p>
<ul><li>
<p><a href="Method.html#method-i-parameters"><code>Method#parameters</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p><a href="NilClass.html"><code>NilClass</code></a></p>
<ul><li>
<p>new method:</p>
<ul><li>
<p><a href="NilClass.html#method-i-rationalize"><code>NilClass#rationalize</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p><a href="Object.html"><code>Object</code></a></p>
<ul><li>
<p>extended methods:</p>
<ul><li>
<p>Float() supports hexadecimal floating point format.</p>
</li><li>
<p>printf() supports %a/%A format.</p>
</li></ul>
</li></ul>
</li><li>
<p><a href="Proc.html"><code>Proc</code></a></p>
<ul><li>
<p>new method:</p>
<ul><li>
<p><a href="Proc.html#method-i-parameters"><code>Proc#parameters</code></a></p>
</li></ul>
</li><li>
<p>extended method:</p>
<ul><li>
<p><a href="Proc.html#method-i-source_location"><code>Proc#source_location</code></a> returns location even if receiver is a method defined by attr_reader / attr_writer / attr_accessor.</p>
</li></ul>
</li></ul>
</li><li>
<p><a href="Process.html"><code>Process</code></a></p>
<ul><li>
<p>extended method:</p>
<ul><li>
<p><a href="Process.html#method-c-spawn"><code>Process.spawn</code></a> accepts [:child, FD] for a redirect target.</p>
</li></ul>
</li></ul>
</li><li>
<p><a href="Random.html"><code>Random</code></a> (new class to generate pseudo-random numbers)</p>
</li><li>
<p><a href="Rational.html"><code>Rational</code></a></p>
<ul><li>
<p>new method:</p>
<ul><li>
<p><a href="Rational.html#method-i-rationalize"><code>Rational#rationalize</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p><a href="String.html"><code>String</code></a></p>
<ul><li>
<p>extended methods:</p>
<ul><li>
<p>string[regexp, name] is supported for named capture.</p>
</li></ul>
</li></ul>
</li><li>
<p><a href="Thread.html"><code>Thread</code></a></p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p><a href="Thread.html#method-i-add_trace_func"><code>Thread#add_trace_func</code></a></p>
</li><li>
<p><a href="Thread.html#method-i-set_trace_func"><code>Thread#set_trace_func</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p><a href="Time.html"><code>Time</code></a></p>
<ul><li>
<p>extended features:</p>
<ul><li>
<p>time_t restriction is removed to represent before 1901 and after 2038. Proleptic Gregorian calendar is used for old dates.</p>
</li><li>
<p><a href="Time.html#method-c-new"><code>Time.new</code></a> have optional arguments to specify date with time offset.</p>
</li><li>
<p><a href="Time.html#method-i-getlocal"><code>Time#getlocal</code></a>, <a href="Time.html#method-i-localtime"><code>Time#localtime</code></a> have optional time offset argument.</p>
</li></ul>
</li><li>
<p>new methods:</p>
<ul><li>
<p><a href="Time.html#method-i-to_r"><code>Time#to_r</code></a></p>
</li><li>
<p><a href="Time.html#method-i-subsec"><code>Time#subsec</code></a></p>
</li><li>
<p><a href="Time.html#method-i-round"><code>Time#round</code></a></p>
</li></ul>
</li><li>
<p>incompatible change:</p>
<ul><li>
<p>The year argument of <a href="Time.html"><code>Time</code></a>.{utc,gm,local,mktime} is now interpreted as the value itself. For example, <a href="Time.html#method-c-utc"><code>Time.utc(99)</code></a> means the year 99 AD, not 1999 AD.</p>
</li></ul>
</li></ul>
</li><li>
<p><a href="UnboundMethod.html"><code>UnboundMethod</code></a></p>
<ul><li>
<p>new method:</p>
<ul><li>
<p><a href="UnboundMethod.html#method-i-parameters"><code>UnboundMethod#parameters</code></a></p>
</li></ul>
</li></ul>
</li></ul>
</li><li>
<p>digest</p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p><a href="Digest/Class.html#method-c-base64digest"><code>Digest::Class.base64digest</code></a></p>
</li><li>
<p><a href="Digest/Instance.html#method-i-base64digest"><code>Digest::Instance#base64digest</code></a></p>
</li><li>
<p><a href="Digest/Instance.html#method-i-base64digest-21"><code>Digest::Instance#base64digest!</code></a></p>
</li></ul>
</li><li>
<p>Digest::HMAC (digest/hmac) has been marked as deprecated because it was unintentional for the experimental library to be included in the final release of 1.9.1. Please use <a href="OpenSSL/HMAC.html"><code>OpenSSL::HMAC</code></a> instead.</p>
</li></ul>
</li><li>
<p>rss</p>
<ul><li>
<p>0.2.4 -> 0.2.7.</p>
</li><li>
<p><a href="RSS/Maker.html#method-c-make"><code>RSS::Maker.make</code></a></p>
<ul><li>
<p>raise an exception not returns nil for invalid feed making.</p>
</li><li>
<p>requires block.</p>
</li></ul>
</li><li>
<p><a href="RSS/Maker.html#method-c-5B-5D"><code>RSS::Maker.[]</code></a></p>
<ul><li>
<p>new method to return maker class.</p>
</li></ul>
</li><li>
<p><a href="RSS/Maker.html#method-c-supported-3F"><code>RSS::Maker.supported?(version)</code></a></p>
<ul><li>
<p>new method to check whether given version is supported.</p>
</li></ul>
</li><li>
<p>RSS::Maker: item.guid.permanent_link?</p>
<ul><li>
<p>new alias of item.guid.isPermaLink</p>
</li></ul>
</li><li>
<p>RSS::Maker: item.guid.permanent_link=</p>
<ul><li>
<p>new alias of item.guid.isPermaLink=</p>
</li></ul>
</li></ul>
</li><li>
<p>DL</p>
<ul><li>
<p>Now uses libffi as a backend if available. It means DL works fine on more platforms.</p>
</li></ul>
</li><li>
<p><a href="Fiddle.html"><code>Fiddle</code></a></p>
<ul><li>
<p>A lightweight wrapper for libffi.</p>
</li></ul>
</li><li>
<p>YAML</p>
<ul><li>
<p>Now uses libyaml as a backend if available. It means YAML library supports new standards for YAML.</p>
</li></ul>
</li><li>
<p><a href="Psych.html"><code>Psych</code></a></p>
<ul><li>
<p>A wrapper for libyaml.</p>
</li></ul>
</li><li>
<p><a href="JSON.html"><code>JSON</code></a></p>
<ul><li>
<p>Update to <a href="JSON.html"><code>JSON</code></a> 1.1.9</p>
</li></ul>
</li><li>
<p><a href="REXML.html"><code>REXML</code></a></p>
<ul><li>
<p><a href="REXML/Document.html#method-c-entity_expansion_limit-3D"><code>REXML::Document.entity_expansion_limit=</code></a></p>
<p>New method to set the entity expansion limit. By default the limit is set to 10000. See the following URL for details.</p>
<p><a href="https://www.ruby-lang.org/en/news/2008/08/23/dos-vulnerability-in-rexml">www.ruby-lang.org/en/news/2008/08/23/dos-vulnerability-in-rexml</a>/</p>
</li></ul>
</li><li>
<p><a href="RDoc.html"><code>RDoc</code></a></p>
<ul><li>
<p>Updated to <a href="RDoc.html"><code>RDoc</code></a> 2.5.8</p>
</li></ul>
</li><li>
<p>RubyGems</p>
<ul><li>
<p>Updated to RubyGems 1.3.7</p>
</li></ul>
</li><li>
<p>logger</p>
<ul><li>
<p>imported upstream version (logger/1.2.7)</p>
<ul><li>
<p>do not raise an exception even if log writing failed.</p>
</li><li>
<p>do not raise ShiftingError if an aged file already exists. (no ShiftingError will be raised from 1.2.7, just warn() instead)</p>
</li></ul>
</li></ul>
</li><li>
<p>matrix</p>
<ul><li>
<p>API change to adhere strictly to mathematical definitions:</p>
<ul><li>
<p>Matrices must now be rectangular.</p>
</li><li>
<p>trace, regular?, singular? are defined only for square matrices</p>
</li><li>
<p>support for empty matrices</p>
</li><li>
<p>all integer matrices now have the right determinant (also an integer)</p>
</li></ul>
</li><li>
<p><a href="Matrix.html"><code>Matrix</code></a> and <a href="Vector.html"><code>Vector</code></a> include <a href="Enumerable.html"><code>Enumerable</code></a>.</p>
</li><li>
<p>new methods:</p>
<ul><li>
<p><a href="Matrix.html#method-c-build"><code>Matrix.build</code></a></p>
</li><li>
<p><a href="Matrix.html#method-c-empty"><code>Matrix.empty</code></a></p>
</li><li>
<p><a href="Matrix.html#method-i-conj"><code>Matrix#conj</code></a></p>
</li><li>
<p><a href="Matrix.html#method-i-conjugate"><code>Matrix#conjugate</code></a></p>
</li><li>
<p><a href="Matrix.html#method-i-each"><code>Matrix#each</code></a></p>
</li><li>
<p><a href="Matrix.html#method-i-each_with_index"><code>Matrix#each_with_index</code></a></p>
</li><li>
<p><a href="Matrix.html#method-i-empty-3F"><code>Matrix#empty?</code></a></p>
</li><li>
<p><a href="Matrix.html#method-i-imag"><code>Matrix#imag</code></a></p>
</li><li>
<p><a href="Matrix.html#method-i-imaginary"><code>Matrix#imaginary</code></a></p>
</li><li>
<p><a href="Matrix.html#method-i-real"><code>Matrix#real</code></a></p>
</li><li>
<p><a href="Matrix.html#method-i-real-3F"><code>Matrix#real?</code></a></p>
</li><li>
<p><a href="Matrix.html#method-i-rect"><code>Matrix#rect</code></a></p>
</li><li>
<p><a href="Matrix.html#method-i-rectangular"><code>Matrix#rectangular</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p>net/http</p>
<ul><li>
<p>merged net/https.</p>
</li></ul>
</li><li>
<p>open3</p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p><a href="Open3.html#method-c-popen2"><code>Open3.popen2</code></a></p>
</li><li>
<p><a href="Open3.html#method-c-popen2e"><code>Open3.popen2e</code></a></p>
</li><li>
<p><a href="Open3.html#method-c-capture3"><code>Open3.capture3</code></a></p>
</li><li>
<p><a href="Open3.html#method-c-capture2"><code>Open3.capture2</code></a></p>
</li><li>
<p><a href="Open3.html#method-c-capture2e"><code>Open3.capture2e</code></a></p>
</li><li>
<p><a href="Open3.html#method-c-pipeline_rw"><code>Open3.pipeline_rw</code></a></p>
</li><li>
<p><a href="Open3.html#method-c-pipeline_r"><code>Open3.pipeline_r</code></a></p>
</li><li>
<p><a href="Open3.html#method-c-pipeline_w"><code>Open3.pipeline_w</code></a></p>
</li><li>
<p><a href="Open3.html#method-c-pipeline_start"><code>Open3.pipeline_start</code></a></p>
</li><li>
<p><a href="Open3.html#method-c-pipeline"><code>Open3.pipeline</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p>pty</p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p><a href="PTY.html#method-c-open"><code>PTY.open</code></a></p>
</li><li>
<p><a href="PTY.html#method-c-check"><code>PTY.check</code></a></p>
</li></ul>
</li><li>
<p>deprecated methods:</p>
<ul><li>
<p>protect_signal</p>
</li><li>
<p>reset_signal</p>
</li></ul>
</li></ul>
</li><li>
<p>openssl</p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p><a href="OpenSSL/Buffering.html#method-i-read_nonblock"><code>OpenSSL::Buffering#read_nonblock</code></a></p>
</li><li>
<p><a href="OpenSSL/Buffering.html#method-i-write_nonblock"><code>OpenSSL::Buffering#write_nonblock</code></a></p>
</li><li>
<p><a href="OpenSSL/SSL/SSLSocket.html#method-i-connect_nonblock"><code>OpenSSL::SSL::SSLSocket#connect_nonblock</code></a></p>
</li><li>
<p><a href="OpenSSL/SSL/SSLSocket.html#method-i-accept_nonblock"><code>OpenSSL::SSL::SSLSocket#accept_nonblock</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p>scanf</p>
<ul><li>
<p>support %a/%A format.</p>
</li></ul>
</li><li>
<p>socket</p>
<ul><li>
<p>incompatible changes:</p>
<ul><li>
<p>Socket#{recvfrom,recvfrom_nonblock,accept,accept_nonblock,sysaccept} returns a sender address as <a href="Addrinfo.html"><code>Addrinfo</code></a> object instead of a binary sockaddr string. <a href="Addrinfo.html#method-i-to_s"><code>Addrinfo#to_s</code></a> returns the old binary sockaddr string.</p>
</li><li>
<p><a href="BasicSocket.html#method-i-getsockopt"><code>BasicSocket#getsockopt</code></a> returns <a href="Socket/Option.html"><code>Socket::Option</code></a> object instead of a binary string. <a href="Socket/Option.html#method-i-to_s"><code>Socket::Option#to_s</code></a> returns the old binary string.</p>
</li><li>
<p><a href="BasicSocket.html#method-c-do_not_reverse_lookup"><code>Socket.do_not_reverse_lookup</code></a> is turned on by default now.</p>
</li></ul>
</li><li>
<p>new class:</p>
<ul><li>
<p><a href="Addrinfo.html"><code>Addrinfo</code></a></p>
</li><li>
<p><a href="Socket/Option.html"><code>Socket::Option</code></a></p>
</li><li>
<p><a href="Socket/AncillaryData.html"><code>Socket::AncillaryData</code></a></p>
</li></ul>
</li><li>
<p>new methods:</p>
<ul><li>
<p><a href="Socket.html#method-c-ip_address_list"><code>Socket.ip_address_list</code></a></p>
</li><li>
<p><a href="Socket.html#method-c-tcp"><code>Socket.tcp</code></a></p>
</li><li>
<p><a href="Socket.html#method-c-tcp_server_loop"><code>Socket.tcp_server_loop</code></a></p>
</li><li>
<p><a href="Socket.html#method-c-tcp_server_sockets"><code>Socket.tcp_server_sockets</code></a></p>
</li><li>
<p><a href="Socket.html#method-c-udp_server_sockets"><code>Socket.udp_server_sockets</code></a></p>
</li><li>
<p><a href="Socket.html#method-c-udp_server_loop_on"><code>Socket.udp_server_loop_on</code></a></p>
</li><li>
<p><a href="Socket.html#method-c-udp_server_loop"><code>Socket.udp_server_loop</code></a></p>
</li><li>
<p><a href="Socket.html#method-c-unix"><code>Socket.unix</code></a></p>
</li><li>
<p><a href="Socket.html#method-c-unix_server_loop"><code>Socket.unix_server_loop</code></a></p>
</li><li>
<p><a href="Socket.html#method-c-unix_server_socket"><code>Socket.unix_server_socket</code></a></p>
</li><li>
<p><a href="Socket.html#method-c-accept_loop"><code>Socket.accept_loop</code></a></p>
</li><li>
<p><a href="Socket.html#method-i-ipv6only-21"><code>Socket#ipv6only!</code></a></p>
</li><li>
<p><a href="BasicSocket.html#method-i-local_address"><code>BasicSocket#local_address</code></a></p>
</li><li>
<p><a href="BasicSocket.html#method-i-remote_address"><code>BasicSocket#remote_address</code></a></p>
</li><li>
<p><a href="BasicSocket.html#method-i-connect_address"><code>BasicSocket#connect_address</code></a></p>
</li><li>
<p><a href="BasicSocket.html#method-i-sendmsg"><code>BasicSocket#sendmsg</code></a></p>
</li><li>
<p><a href="BasicSocket.html#method-i-sendmsg_nonblock"><code>BasicSocket#sendmsg_nonblock</code></a></p>
</li><li>
<p><a href="BasicSocket.html#method-i-recvmsg"><code>BasicSocket#recvmsg</code></a></p>
</li><li>
<p><a href="BasicSocket.html#method-i-recvmsg_nonblock"><code>BasicSocket#recvmsg_nonblock</code></a></p>
</li><li>
<p><a href="BasicSocket.html#method-i-getpeereid"><code>BasicSocket#getpeereid</code></a></p>
</li></ul>
</li><li>
<p>extended methods:</p>
<ul><li>
<p><a href="Socket.html#method-c-new"><code>Socket.new</code></a>'s 3rd argument is optional now.</p>
</li><li>
<p><a href="Socket.html#method-c-pair"><code>Socket.pair</code></a>'s 3rd argument is optional now.</p>
</li><li>
<p><a href="Socket.html#method-c-pair"><code>Socket.pair</code></a> and <a href="UNIXSocket.html#method-c-pair"><code>UNIXSocket.pair</code></a> can take a block.</p>
</li><li>
<p><a href="BasicSocket.html#method-i-send"><code>BasicSocket#send</code></a>, <a href="UDPSocket.html#method-i-send"><code>UDPSocket#send</code></a>, <a href="Socket.html#method-c-getnameinfo"><code>Socket.getnameinfo</code></a>, <a href="Socket.html#method-i-bind"><code>Socket#bind</code></a>, and Socket#{connect,connect_nonblock} accepts an <a href="Addrinfo.html"><code>Addrinfo</code></a> object as sockaddr.</p>
</li><li>
<p><a href="BasicSocket.html#method-i-getsockopt"><code>BasicSocket#getsockopt</code></a> accepts a <a href="Socket/Option.html"><code>Socket::Option</code></a> object.</p>
</li><li>
<p><a href="Socket.html#method-c-getaddrinfo"><code>Socket.getaddrinfo</code></a> and IPSocket#{addr,peeraddr} accept an optional argument to turn reverse lookup on/off.</p>
</li><li>
<p>constant names can be accepted as well as constant values. i.e. <a href="Socket.html#method-c-new"><code>Socket.new</code></a>(:PF_INET, :SOCK_STREAM, 0) The constant names can be specified without the prefix. i.e. <a href="Socket.html#method-c-new"><code>Socket.new</code></a>(:INET, :STREAM, 0)</p>
<ul><li>
<p>protocol/address family</p>
</li><li>
<p>socket type</p>
</li><li>
<p>socket option protocol level</p>
</li><li>
<p>socket option name</p>
</li><li>
<p>shutdown's argument</p>
</li></ul>
</li></ul>
</li></ul>
</li><li>
<p>stringio</p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p><a href="IO/generic_readable.html#method-i-read_nonblock"><code>StringIO#read_nonblock</code></a></p>
</li><li>
<p><a href="IO/generic_writable.html#method-i-write_nonblock"><code>StringIO#write_nonblock</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p>pathname</p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p><a href="Pathname.html#method-i-binread"><code>Pathname#binread</code></a></p>
</li><li>
<p><a href="Pathname.html#method-i-realdirpath"><code>Pathname#realdirpath</code></a></p>
</li><li>
<p><a href="Pathname.html#method-i-each_child"><code>Pathname#each_child</code></a></p>
</li></ul>
</li><li>
<p>extended methods:</p>
<ul><li>
<p><a href="Pathname.html#method-i-realpath"><code>Pathname#realpath</code></a> and <a href="Pathname.html#method-i-realdirpath"><code>Pathname#realdirpath</code></a> takes optional basedir argument.</p>
</li></ul>
</li></ul>
</li><li>
<p><a href="Readline.html"><code>Readline</code></a></p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p><a href="Readline.html#method-c-set_screen_size"><code>Readline.set_screen_size</code></a></p>
</li><li>
<p><a href="Readline.html#method-c-get_screen_size"><code>Readline.get_screen_size</code></a></p>
</li></ul>
</li><li>
<p>extended methods:</p>
<ul><li>
<p><a href="Readline.html#method-c-completion_proc-3D"><code>Readline.completion_proc=</code></a> accepts nil. nil means to use default completion proc.</p>
</li></ul>
</li></ul>
</li><li>
<p>set</p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p><a href="Set.html#method-i-keep_if"><code>Set#keep_if</code></a></p>
</li><li>
<p><a href="Set.html#method-i-select-21"><code>Set#select!</code></a></p>
</li></ul>
</li></ul>
</li><li>
<p>time</p>
<ul><li>
<p>incompatible changes:</p>
<ul><li>
<p><a href="Time.html#method-c-parse"><code>Time.parse</code></a> raises <a href="ArgumentError.html"><code>ArgumentError</code></a> when no date information.</p>
</li></ul>
</li></ul>
</li><li>
<p>thread</p>
<ul><li>
<p>extended method:</p>
<ul><li>
<p><a href="ConditionVariable.html#method-i-wait"><code>ConditionVariable#wait</code></a> takes timeout argument.</p>
</li></ul>
</li></ul>
</li><li>
<p>securerandom</p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p>SecureRandom.urlsafe_base64</p>
</li></ul>
</li></ul>
</li><li>
<p><a href="URI.html"><code>URI</code></a></p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p><a href="URI.html#method-c-encode_www_form"><code>URI.encode_www_form</code></a></p>
</li><li>
<p><a href="URI.html#method-c-decode_www_form"><code>URI.decode_www_form</code></a></p>
</li><li>
<p><a href="URI.html#method-c-encode_www_form_component"><code>URI.encode_www_form_component</code></a></p>
</li><li>
<p><a href="URI.html#method-c-decode_www_form_component"><code>URI.decode_www_form_component</code></a></p>
</li></ul>
</li><li>
<p>Obsoleted methods:</p>
<ul><li>
<p>URI.decode</p>
</li><li>
<p>URI.encode</p>
</li><li>
<p>URI.escape</p>
</li><li>
<p>URI.unescape</p>
</li></ul>
</li></ul>
</li><li>
<p>etc</p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p>Etc::Passwd.each</p>
</li><li>
<p>Etc::Group.each</p>
</li></ul>
</li></ul>
</li><li>
<p>zlib</p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p>Zlib::GzipFile#path</p>
</li><li>
<p><a href="Zlib.html"><code>Zlib</code></a>.#adler32_combine</p>
</li><li>
<p><a href="Zlib.html"><code>Zlib</code></a>.#crc32_combine</p>
</li></ul>
</li></ul>
</li><li>
<p>rbconfig</p>
<ul><li>
<p>new methods:</p>
<ul><li>
<p>RbConfig.ruby</p>
</li></ul>
</li></ul>
</li></ul>
<h3 id="label-Language+changes">Language changes<span><a href="#label-Language+changes">¶</a> <a href="#top">↑</a></span></h3>
<ul><li>
<p><a href="Regexp.html"><code>Regexp</code></a> properties (p{}) names now ignore underscores, spaces, and case, so p{ol chiki} is the same as p{Ol_Chiki}</p>
</li><li>
<p>Regexps now support Unicode 5.2 (new characters and scripts)</p>
</li><li>
<p>d, s, and w are now ASCII only; use POSIX bracket classes and p{} for Unicode semantics</p>
</li><li>
<p>$: no longer includes the current directory, use require_relative</p>
</li><li>
<p><a href="Symbol.html"><code>Symbol</code></a> with an invalid encoding is forbidden to exist.</p>
</li></ul>
<h3 id="label-Compilation+options">Compilation options<span><a href="#label-Compilation+options">¶</a> <a href="#top">↑</a></span></h3>
<ul><li>
<p>–program-prefix and –program-suffix no longer act on the shared object names nor paths to libraries.</p>
<p>use –with-rubylibprefix='${libruby}/${RUBY_INSTALL_NAME}' and –with-soname='${RUBY_INSTALL_NAME}' for the same result as Ruby 1.9.1.</p>
</li><li>
<p>–with-arch is added for universal binary, instead of –enable-fat-binary option.</p>
</li></ul>
<h3 id="label-Compatibility+issues+-28excluding+feature+bug+fixes-29">Compatibility issues (excluding feature bug fixes)<span><a href="#label-Compatibility+issues+-28excluding+feature+bug+fixes-29">¶</a> <a href="#top">↑</a></span></h3>
<pre>* Enumerator#rewind
* Socket#recvfrom
* Socket#recvfrom_nonblock
* Socket#accept
* Socket#accept_nonblock
* Socket#sysaccept
* BasicSocket#getsockopt
* Time.utc
* Time.gm
* Time.local
* Time.mktime
* Time.parse
* --program-prefix and --program-suffix
* --enable-fat-binary
* $:
See above.
* Digest::HMAC
Deprecated. See above.</pre>
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