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<h2>1.60.0</h2>
<ul>
  <li dir="ltr">
  <p dir="ltr"><b>New:</b> Added functions <code>
  <a href="reference.html#lex-normal">lexically_normal</a></code>, <code>
  <a href="reference.html#lex-relative">lexically_relative</a></code>, <code>
  <a href="reference.html#op-relative">relative</a></code>, and <code>
  <a href="reference.html#weakly_canonical">weakly_canonical</a></code>. Many thanks to Jamie Allsop for his help and 
  perseverance. Resolves tickets
  <a href="https://svn.boost.org/trac/boost/ticket/1976">#1976</a>,
  <a href="https://svn.boost.org/trac/boost/ticket/5897">#5897</a>,
  <a href="https://svn.boost.org/trac/boost/ticket/6249">#6249</a></li>
  <li><b>New:</b> Class <code>path</code> now has
  <a href="reference.html#path-iterators"> <code>reverse_iterator</code>,
  <code>const_reverse_iterator</code>, <code>rbegin()</code>, and <code>rend()</code></a>. </li>
  <li><b>New:</b> C++11 <code>noexcept</code> supplied as specified in the 
  Filesystem TS if supported by the compiler.</li>
  <li><b>New:</b> C++11 move constructors and move assignments supplied as 
  specified in the Filesystem TS if supported by the compiler. Resolves
  <a href="https://svn.boost.org/trac/boost/ticket/10291">#10291</a>.</li>
  <li><b>New:</b> Existing functions whose names changed in the Filesystem TS 
  are now supported under both the old and new names.</li>
  <li><b>New: </b>Added <code><a href="reference.html#path-size">size</a>()</code> 
  function to class <code>path</code>. Resolves
  <a href="https://svn.boost.org/trac/boost/ticket/6874">#6874</a>, <i>Path 
  should have a size() member function</i>.</li>
  <li>Clear several spurious GCC warnings.</li>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/11733">#11733</a>, <i>
  Missing unistd.h include in boost/libs/filesystem/src/unique_path.cpp</i> by 
  apply a patch from Idar Tollefsen.</li>
  <li>Fix a race condition in <code>unique_path</code> by applying
  <a href="https://github.com/boostorg/filesystem/pull/15">pull request #15</a> 
  from Sebastian Redl. Also fixes
  <a href="unique_path%20Fails%20on%20Windows%20for%20Temporary%20User%20Profiles">
  #5706</a>, <i><code>unique_path</code> Fails on Windows for Temporary User 
  Profiles</i>.</li>
  <li>Fix bug in <i><code>file_status</code></i> and <i><code>
  recursive_directory_iterator</code></i>: C++ turns an explicit constructor 
  with all arguments except first defaulted into non-explicit single argument 
  constructor.</li>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/10591">#10591</a>, <i>
  boost::filesystem does not build on iOS 8</i>, by applying a patch submitted 
  by Daniel Seither.</li>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/9454">#9454</a>, <i>
  Boost Filesystem [library build] not compiling when 
  BOOST_FILESYSTEM_NO_DEPRECATED is defined</i>, by applying a patch submitted 
  by Makesim.</li>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/11447">#11447</a>, <i>
  __OpenBSD__ macro name misspelled</i>, by applying a patch submitted by Jasper 
  Lievisse Adriaanse.</li>
  <li>
  <p>Fix <a href="https://svn.boost.org/trac/boost/ticket/11288">#11288</a>, <i>
  <font face="Arial">A patch to avoid redundant string allocations</font></i>, 
  by applying a patch submitted by Yevhen Ivannikov.</li>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/11175">#11175</a>, 
  out-of-date documentation causing users to incorrectly expect that the library 
  could be used with exceptions disabled.</li>
  <li>Resolve <a href="https://svn.boost.org/trac/boost/ticket/11175">#11166</a> 
  by mitigating (i.e. reducing the likelihood of) a possible external file 
  system race in <code>remove()</code>.</li>
  <li>
  <p>Fix <a href="https://svn.boost.org/trac/boost/ticket/7258">#7258</a>,
  <i><code>create_directories</code> returns false if the path ends with a slash</i>. 
  Also fix related issues if path contains <i>dot</i> or <i>dot-dot</i> 
  elements, and added test cases to the test suite.</li>
  <li>
  <p>Reference docs editorial cleanups: Use same style sheet as the 
  rest of the documentation. Tweak tab font size. Fix excessively long lines in 
  tables, synopsis.</li>
  <li>Resolve <a href="https://svn.boost.org/trac/boost/ticket/10766">
  #10766</a>, <i>parent_path() with redundant separator returns wrong value</i>, 
  by adding examples and notes to the reference documentation to show why the 
  returned value is in fact correct, and to provide rationale for that behavior. 
  See <a href="reference.html#path-iterators">[path.itr]</a>, and
  <a href="reference.html#path-decomposition">[path.decompose]</a> <code>
  parent_path()</code> and <code>filename()</code> sections of the reference 
  docs.</li>
  <li>Minor other fixes, including pull requests from Jonathan Wakely and Marcel 
  Raad.</li>
  <li>Closed several tickets as duplicates or otherwise resolved by the 
  above changes:<ul>
  <li><a href="https://svn.boost.org/trac/boost/ticket/7607">#7607</a>, <i>path 
  should not infer an invisible &quot;.&quot; at the end of a path that ends with a slash;
  </i><a href="https://svn.boost.org/trac/boost/ticket/7258">#7258</a>,
  <a href="https://svn.boost.org/trac/boost/ticket/10766">#10766</a></li>
  <li><a href="https://svn.boost.org/trac/boost/ticket/11061">#11061</a>,
  <a href="https://svn.boost.org/trac/boost/ticket/11062">#11062</a>, <i>
  impossible to traverse the path of the reverse iterator</i>, is effectively 
  resolved by the addition of the class <code>path</code> reverse iteration 
  feature. The reference documentation has also been updated with
  <a href="reference.html#path-iterators">a note</a> warning about the 
  limitations of class <code>path</code> iterators.</li>
</ul>

  </li>
</ul>

<h2>1.59.0</h2>
<ul>
  <li>Update the Tutorial:<ul>
    <li>Use C++11 in the example programs to improve clarity.</li>
    <li>Update the example source code show to match the actual example source 
    code in the cpp files.</li>
    <li>Rerun all the examples and update the output shown in the tutorial 
    accordingly.</li>
    <li>Fix spacing and other HTML presentation issues.</li>
  </ul>
  </li>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/11491">#11491</a>, <i>
  <code>temp_directory_path()</code> doesn&#39;t return valid temp path on Android</i>.</li>
</ul>

<h2>1.58.0</h2>
<ul>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/6124">#6124</a>,
  <a href="https://svn.boost.org/trac/boost/ticket/6779">#6779</a>, and
  <a href="https://svn.boost.org/trac/boost/ticket/10038">#10038</a>. Cannot 
  pass a BOOST_SCOPED_ENUM to a compiled function because it will result in an 
  undefined reference if the library is compiled with -std=c++0x but the use is 
  compiled in C++03 mode, or visa versa.</li>
  <li>Rewrite Windows implementation of <code>temp_directory_path()</code> to (1) avoid
  <code>GetTempPath()</code> failure if path length &gt; 130 (ticket #5300) and (2) provide a 
  more sensible sequence of directories than provided by <code>GetTempPath()</code>, per 
  boost list discussion &quot;[filesystem] temp_directory_path() behavior on 
  Windows&quot;. The new sequence is:<ol>
    <li><i><code>%TMP%</code></i></li>
    <li><i><code>%TEMP%</code></i></li>
    <li><code><i>%LOCALAPPDATA%</i>/Temp</code></li>
    <li><code><i>%USERPROFILE%</i>/Temp</code></li>
    <li><code><i>GetWindowsDirectoryW()</i>/Temp</code></li>
  </ol>
  </li>
</ul>

<h2>1.57.0</h2>
<ul>
  <li>Rework class <code>path</code> locale and codecvt implementation for increased reliability. 
  This change was SVN revision 83021, which should have gone into 1.56.0 but 
  unfortunately the merge didn't happen until too late.</li>
  <li>Fix tickets <a href="https://svn.boost.org/trac/boost/ticket/8930">#8930</a>, <a href="https://svn.boost.org/trac/boost/ticket/9054">#9054</a>,
  <a href="https://svn.boost.org/trac/boost/ticket/9214">#9219</a>,
  <a href="https://svn.boost.org/trac/boost/ticket/10228">#10228</a>, and
  <a href="https://svn.boost.org/trac/boost/ticket/10641">#10641</a>, all 
  related to locales and codecvt facets.</li>
  <li>The net effect of the above changes and fixes should be to eliminate 
  spurious &quot;locale::facet::_S_create_c_locale name not valid&quot; errors on Linux 
  and other non-BSD POSIX-like systems. The error will continue to occur, as it 
  should, when a path encoding conversion char-to-wchar_t or wchar_t-to-char is 
  attempted in an environment without a valid C locale (for example, if the LANG 
  environment variable is invalid or not defined).</li>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/6124">#6124</a>,
  <a href="https://svn.boost.org/trac/boost/ticket/6779">#6779</a>, and
  <a href="https://svn.boost.org/trac/boost/ticket/10038">#10038</a> - an 
  undefined reference that occurred when the library was compiled for C++03 but 
  the using program was compiled for C++11, or vice versa. The private library 
  interface has been changed to use a plain-old C++03 enum. This is the fix 
  suggested by Andy in 6779.</li>
  <li>The Windows implementation now treats NTFS directory junctions (also known 
  as junctions, also known as mount points) as symlinks. This has the effect of 
  treating directory junctions as directories, and thus supporting all 
  operations suitable for directories. This resolves
  <a href="https://svn.boost.org/trac/boost/ticket/9016">#9016</a>. Directory 
  junctions are very similar to symlinks, but may have performance or other 
  advantages in some situations. They can be created from the command line with 
  &quot;<code>mklink /j link target</code>&quot;. There is no plan for Boost.Filesystem to 
  be able to create them directly other than by calling <code>std::system()</code>.</li>
</ul>

<h2>1.56.0</h2>
<ul>
  <li>Reorganize <code>recursive_directory_iterator::increment</code>, adding an 
  invariant that progress is always made, even if an error is reported by 
  exception or error_code. Add a manually executed test, <code>
  test/issues/recurse_dir_iter_5403.cpp</code>. Adjust regular regression tests 
  as needed. Thanks to Claudio Bley for the
  <a href="https://github.com/boostorg/filesystem/pull/4">pull request</a> - the 
  change was incorporated into the reorganized code. Fixes
  <a href="https://svn.boost.org/trac/boost/ticket/5403">#5403</a> and
  <a href="https://svn.boost.org/trac/boost/ticket/6821">#6821</a>.</li>
  <li>Fix <code>canonical()</code> to treat parent of root as root. (Christian 
  Hammerl) Fixes <a href="https://svn.boost.org/trac/boost/ticket/9683">#9683</a> 
  and <a href="https://svn.boost.org/trac/boost/ticket/10187">#10187</a>.</li>
  <li>Added missing test for <code>__sun</code> macro which is defined on 
  Solaris 10. (Chris Stylianou)</li>
  <li>Minor fixes and code cleanup.</li>
  <li>Update IDE projects to Visual Studio 2013.</li>
  <li>Remove unused <code>const char colon</code> to clear clang warning. (J?gen 
  Hunold)</li>
  <li>Add BOOST_NOEXCEPT to <code>class filesystem_error</code>.</li>
  <li>Change <code>perms::all_all</code> and <code>perms::perms_mask</code> to 
  absolute values to quiet intellisense warnings, and conform to C++11.</li>
</ul>

<h2>1.54.0</h2>
<ul>
  <li>Reimplement <code>path::codecvt()</code> and <code>path::imbue()</code> 
  with portable code that is intended to be much more robust and maintainable. A 
  section on <a href="reference.html#path-Usage">path usage concerns</a> has 
  been added to the reference documentation describing several concerns that 
  arise in the context of multithreading and <code>path::codecvt()</code>.</li>
</ul>

<h2>1.52.0</h2>
<ul>
  <li>Fix <a href="http://svn.boost.org/trac/boost/ticket/7239">#7239</a>, <i>Stack 
  overflow when calling <code>create_directories(&quot;:D&quot;)</code></i>. The reported 
  problem was a symptom of an internal bug that caused <code>path::filename()</code> 
  and <code>path::parent_path()</code> to fail on Windows for <code>path(&quot;:&quot;)</code>, 
  and that in turn caused other functions that depend on <code>filename()</code> 
  or <code>parent_path()</code> to fail, such as <code>create_directories()</code>.</li>
</ul>

<h2>1.51.0</h2>
<ul>
  <li>Add begin() and end() non-member functions for directory_iterator and 
  recursive_directory_iterator so that C++11 range-based for statements  work. 
  Suggested by feature requests
  <a href="https://svn.boost.org/trac/boost/ticket/5896">#5896</a> and
  <a href="https://svn.boost.org/trac/boost/ticket/6521">#6521</a>, using the
  <a href="https://svn.boost.org/trac/boost/ticket/5896">#5896</a> approach.</li>
  <li>Add range_begin() and range_end() non-member functions for directory_iterator and 
  recursive_directory_iterator so that 
  <a href="http://www.boost.org/libs/foreach/">BOOST_FOREACH</a> works.</li>
  <li>Fix a Linux fchmodat problem affecting symlink permissions reported during 
  discussion of <a href="https://svn.boost.org/trac/boost/ticket/6659">#6659</a>.</li>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/6659">#6659</a> and
  <a href="https://svn.boost.org/trac/boost/ticket/7051">#7051</a>, <i>fchmodat 
  supported only on Solaris 11</i>. Fix for both Sun and GCC compilers. </li>
</ul>

<h2>1.50.0</h2>
<ul>
  <li>Remove Filesystem Version 2 from the distribution. Version 3 is now the 
  only distributed version. Those still using V2 are urged to migrate to V3 as 
  soon as possible.</li>
  <li>Add <code>constexpr value_type preferred_separator</code> to class path.</li>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/5118">#5118</a>, <i>
  <code>replace_extension</code> doesn't work as specified in documentation</i>. The 
  documentation, implementation, and test cases have all had fixes applied. The 
  documentation had failed to mention that any existing extension is removed. 
  The behavior for simple cases has been reverted to the Version 2 behavior, but 
  with corrections so that complex replacements now work. Two test cases from 
  #5118 have been added.</li>
  <li>Fix <a href="http://svn.boost.org/trac/boost/ticket/3737">#3737</a>, 
  <i>Boost.Filesystem does not compile on Windows Mobile</i>. On Windows, &lt;sys/stat.h&gt; 
  is no longer included.</li>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/4065">#4065</a>, 
  <i>Boost Filesystem lexicographic path comparison inconsistent</i>. This required 
  multiple source code bug fixes and code cleanup, correcting problems not 
  related to lexicographical issues.</li>
  <li>Add class path member function <code>compare</code> for consistency with 
  std::string.</li>
  <li>Tighten BOOST_FILESYSTEM_DYN_LINK and BOOST_FILESYSTEM_STATIC_LINK logic 
  in filesystem/config.hpp so that one or the other is always defined, and both 
  being defined is a #error.</li>
  <li>Fix <a href="http://svn.boost.org/trac/boost/ticket/6690">#6690</a> and
  <a href="http://svn.boost.org/trac/boost/ticket/6737">#6737</a>, resolving 
  static linking related problems with VC++ 8 through 11. Note that this fix may 
  reintroduce codecvt thread safety problems
  <a href="http://svn.boost.org/trac/boost/ticket/4889">#4889</a>,
  <a href="http://svn.boost.org/trac/boost/ticket/6320">#6320</a>, for these 
  compilers if static linking is used.</li>
  <li>Add path::operator+= and concat functions to tack on things like suffixes 
  or numbers. Suggested by Ed Smith-Rowland and others.</li>
  <li>Fix <a href="http://svn.boost.org/trac/boost/ticket/6809">#6809</a>, 
  <i>Implementation of filesystem::rename() method for MS Windows is wrong</i>, by 
  adding MOVEFILE_COPY_ALLOWED to deal with renames across drives, volumes, file 
  systems. Fix has no effect on non-Windows systems.</li>
  <li>Fix <a href="http://svn.boost.org/trac/boost/ticket/6819">#6819</a>, A path operand with a source that was a one character array was 
  treated as empty, even if it wasn't empty. Such arrays can occur in unions or 
  in code using C variable length array idioms.</li>
  <li>Fix <a href="http://svn.boost.org/trac/boost/ticket/6932">#6932</a>, 
  <i>create_directories throws exception even if error_code is specified</i>.</li>
</ul>

<h2>1.49.0</h2>
<ul>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/3714">#3714</a>, 
  Added test cases and fixes for class path errors when assignment or append 
  used self or portion of self as source. </li>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/4889">#4889</a>, 
  <a href="https://svn.boost.org/trac/boost/ticket/6320">#6320</a>, <i>Locale codecvt_facet not thread safe on Windows</i>. Move 
  Windows, Mac OS X, locale and codecvt facet back to namespace scope. POSIX 
  except OS X uses local static initialization (IE lazy) to ensure exceptions 
  are catchable if environmental variables are misconfigured and to avoid use of 
  locale(&quot;&quot;) if not actually used.</li>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/5652">#5652</a>, 
  <i>recursive_directory_iterator fails on cyclic symbolic links</i>. Thanks to Daniel Aarno for the patch.</li>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/5653">#5653</a>, 
  <i>recursive_directory_iterator(error_code) can still throw filesystem_error</i>.</li>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/5900">#5900</a>, <i>directory_iterator 
  access violation on Windows if error is thrown</i>. Thanks to Andreas Eckleder for the patch.</li>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/5900#comment:2">#5900 
  comment 2</a>, a bug in director_iterator construction with error_code argument that 
  caused increment to be called without the ec argument being passed.</li>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/5900">#5989</a> by cleaning up test suite path_test.cpp code even 
  though the ticket itself was not a defect, and clarifying docs; iteration over a path yields 
  generic format.</li>
  <li>Fix <a href="https://svn.boost.org/trac/boost/ticket/5592">#5592</a>, <i>Change Windows codecvt processing from CP_THREAD_ACP to CP_ACP</i>.</li>
  <li>Operations function fixes for PGI compiler, thanks to Noel Belcourt.</li>
  <li>Relax permissions test to reflect reality, particularly on the Sandia test 
  platforms.</li>
</ul>

<h2>1.48.0</h2>
<ul>
  <li>Added operational function <a href="reference.html#canonical">canonical()</a>, 
  suggested by David Svoboda, who also provided pseudo-code.</li>
  <li>Added <a href="reference.html#hash_value">hash_value()</a> function for 
  paths. (Daniel James)</li>
  <li>Fix path inserter problem (<a href="https://svn.boost.org/trac/boost/ticket/5764">#5764</a>) 
  reported for QNX6.3.2 host (gcc-3.3.5)</li>
  <li>Fix problem of locale(&quot;&quot;) exception being thrown before main() starts on 
  poorly configured (e.g. LANG=&quot;bad name&quot;) POSIX systems. Resolves the most 
  serious aspect of tickets
  <a href="https://svn.boost.org/trac/boost/ticket/4688">#4688</a>,
  <a href="https://svn.boost.org/trac/boost/ticket/5100">#5100</a>,
  <a href="https://svn.boost.org/trac/boost/ticket/5289">#5289</a>.</li>
</ul>

<h2>1.47.0</h2>
<ul>
  <li>Program file_status.cpp added (V3). See boost-root/libs/filesystem/v3/example. 
  Useful both as an example and to explore how Boost.Filesystem treats various 
  status errors.&nbsp; Run &quot;bjam&quot; (NOT &quot;bjam install&quot;) in the example directory 
  to install in example/bin.</li>
</ul>

<h2>1.46.1</h2>

<ul>
  <li>Fix fstream problem for STLPort masquerading as Dinkumware (<a href="https://svn.boost.org/trac/boost/ticket/5217">#5217</a>).</li>
</ul>

<h2>1.46.0</h2>
<ul>
  <li>Version 3 of the library is now the default.</li>
  <li>IBM vacpp: Workaround for compiler bug affecting iterator_facade. (<a href="https://svn.boost.org/trac/boost/ticket/4912">#4912</a>)</li>
  <li>Verify, clarify, document that &lt;boost/config/user.hpp&gt; can be used to 
  specify BOOST_FILESYSTEM_VERSION. (<a href="https://svn.boost.org/trac/boost/ticket/4891">#4891</a>)</li>
  <li>Replaced C-style assert with BOOST_ASSERT.</li>
  <li>Undeprecated unique_path(). Instead, add a note mentioning the workaround 
  for lack of thread safety and possible change to cwd. unique_path() is just 
  too convenient to deprecate!</li>
  <li>Cleared several GCC warnings.</li>
  <li>Changed V2 code to use BOOST_THROW_EXCEPTION.</li>
  <li>Windows: Fix status() to report non-symlink reparse point correctly.</li>
  <li>Add <code>symlink_option</code> to <code>recursive_directory_iterator</code>, 
  allowing control over recursion into directory symlinks. Note that the default 
  is changed to not recurse into directory symlinks.</li>
  <li><a href="reference.html">Reference</a> documentation cleanup, including 
  fixing missing and broken links, and adding missing functions.</li>
  <li>Miscellaneous implementation code cleanup. </li>
</ul>
<hr>
<p>Revised
<!--webbot bot="Timestamp" S-Type="EDITED" S-Format="%d %B, %Y" startspan -->25 October, 2015<!--webbot bot="Timestamp" endspan i-checksum="38877" --></p>
<p>&copy; Copyright Beman Dawes, 2011</p>
<p> Use, modification, and distribution are subject to the Boost Software 
License, Version 1.0. See <a href="http://www.boost.org/LICENSE_1_0.txt">
www.boost.org/LICENSE_1_0.txt</a></p>