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<title>Subversion 1.5 Release Notes</title>
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<div class="warningmessage">
<p><strong>Note:</strong> Subversion 1.5 is <em>not released yet</em>.
When it is released, this warning message will disappear, and the rest
of this page will become the release notes. Until then, this page
describes what is planned for the release.</p>
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<h1 style="text-align: center">Subversion 1.5 Release Notes</h1>
<div class="h2" id="news" title="news">
<h2>What's New in Subversion 1.5</h2>
<ul>
<li>Merge Tracking</li>
<li>Sparse checkouts</li>
<li>Interactive conflict resolution</li>
<li>WebDAV transparent write-through proxy</li>
<li>Cyrus SASL support for ra_svn and <tt>svnserve</tt></li>
<li>Copy/move improvements: peg revisions, 'svn mv file1 file2; svn
mv file2 file3', 'svn cp *.c dir'</li>
<li>Cancellation improvements</li>
<li>Changelist support</li>
<li>FSFS sharding</li>
<li>Command-line client improvements</li>
<li>JavaHL bindings improvements</li>
<li>Many improved APIs</li>
<li>Easier to try out experimental <tt>ra_serf</tt> DAV access module</li>
<li>More than XXX new bug fixes</li>
</ul>
<p>Details are described below.</p>
<p>Subversion 1.5 is a superset of all previous Subversion releases,
and is considered the current "best" release. Anything in 1.0.x,
1.1.x, 1.2.x or 1.3.x is also in 1.5, but 1.5 contains features and
bugfixes not present in any earlier release. The new features will
eventually be documented in a 1.5 version of the free Subversion book,
see <a
href="http://svnbook.red-bean.com">svnbook.red-bean.com</a>.</p>
</div> <!-- news -->
<div class="h2" id="compatibility" title="compatibility">
<h2>Compatibility Concerns</h2>
<p>Older clients and servers interoperate transparently with 1.5
servers and clients. Of course, some of the new 1.5 features may not
be available unless both client and server are the latest version
(e.g. <a href="/merge-tracking/func-spec.html#migration-and-interoperability"
>Merge Tracking</a>). There is <strong>no need</strong> to dump and
reload your repositories; Subversion 1.5 can read repositories created
by earlier versions. To upgrade an existing installation, just
install the newest libraries and binaries on top of the older
ones.</p>
<p>Subversion 1.5 maintains API/ABI compatibility with earlier
releases, by only adding new functions. A program written to the 1.0,
1.1, 1.2 or 1.3 API can both compile and run using 1.5 libraries.
However, a program written for 1.5 cannot necessarily compile or run
against older libraries.</p>
<div class="h3" id="wc-format-change" title="wc-format-change">
<h3>Working Copy and Repository Format Changes</h3>
<p>XXX: 1.5 currently uses the same SVN_WC__VERSION (8) as 1.4.x.
However, some changes <em>sussman</em> and some other folks are
considering for Merge Tracking may impact this. If these changes turn
out not to require a WC format bump, remove this section.</p>
<p>Due to certain improvements and bugfixes made to the working copy
library, the version number of the working copy format has been
incremented. This means that Subversion clients earlier than 1.5 will
<em>not</em> be able to work with working copies produced by Subversion
1.5. Similarly, the repository format has changed as well, meaning
that pre-1.5 Subversion tools that normally access a repository
directly
(e.g. <tt>svnserve</tt>, <tt>mod_dav_svn</tt>, <tt>svnadmin</tt>)
won't be able to read a repository originally created by Subversion
1.5. </p>
<p><strong>WARNING:</strong> if a Subversion 1.5 client encounters a pre-1.5
working copy, it will <em>automatically</em> upgrade the working copy
format as soon as it touches it, making it unreadable by older
Subversion clients. If you are using several versions of Subversion
on your machine, you need to be careful about which version you use in
which working copy, to avoid accidentally upgrading the working copy
format. This "auto upgrade" feature, however, does <em>not</em> occur
with the new repository format. </p>
</div> <!-- wc-format-change -->
<div class="h3" id="output-changes" title="output-changes">
<h3>Command Line Output Changes</h3>
<p>Although the Subversion developers try hard to keep output from the
command line programs compatible between releases, new information
sometimes has to be added. This might break scripts that rely on the
exact format of the output. In 1.5, the following changes have been
made to the output:</p>
<p>XXX: Enumerate changes to output (e.g. for changelists).</p>
<ul>
<li><p>Conflict markers in files now match the file's defined
eol-style.</p></li>
</ul>
</div> <!-- output-changes -->
</div> <!-- compatibility -->
<div class="h2" id="new-features" title="new-features">
<h2>New Features</h2>
<p>XXX: Describe each new feature. See the 1.4 RNs for a
"template".</p>
<div class="h3" id="merge-tracking" title="merge-tracking">
<h3>Merge Tracking (<em>client and server</em>)</h3>
<p>XXX</p>
</div> <!-- merge-tracking -->
<div class="h3" id="sparse-checkouts" title="sparse-checkouts">
<h3>Sparse checkouts (<em>client and server</em>)</h3>
<p>XXX: Described <a
href="http://svn.collab.net/repos/svn/trunk/notes/sparse-directories.txt"
>here</a>.</p>
</div> <!-- sparse-checkouts -->
<div class="h3" id="conflict-resolution" title="conflict-resolution">
<h3>Interactive Conflict Resolution (<em>client</em>)</h3>
<p>Added support for interactive conflict resolution in the command
line client, and a corresponding callback function in the client library.
GUI clients can use the callback function to hook in a graphical conflict
resolution program to the update/switch/merge commands. Example command
line output:</p>
<pre>
svn up
U contrib/client-side/svnmerge/svnmerge_test.py
Conflict discovered in 'contrib/client-side/svnmerge/svnmerge.py'.
Select: (p)ostpone, (d)iff, (e)dit, (h)elp : h
(p)ostpone - mark the conflict to be resolved later
(d)iff - show all changes made to merged file
(e)dit - change merged file in an editor
(r)esolved - accept merged version of file
(m)ine - accept my version of file
(t)heirs - accept repository's version of file
(l)aunch - use third-party tool to resolve conflict
(h)elp - show this list
Select: (p)ostpone, (d)iff, (e)dit, (h)elp : t
G contrib/client-side/svnmerge/svnmerge.py
Updated to revision 25685.
</pre>
<p>This feature can be selectively disabled by using the --non-interactive
option, or disabled permanently by setting '[miscellany] interactive-conflicts
= no' in your run-time config file.</p>
</div> <!-- conflict-resolution -->
<div class="h3" id="webdav-proxy" title="webdav-proxy">
<h3>WebDAV transparent write-through proxy (<em>server</em>)</h3>
<p>XXX: A <a href="http://svn.collab.net/repos/svn/trunk/notes/webdav-proxy"
>mod_dav_svn feature</a> activated using the SVNMasterURI directive in
httpd.conf.</p>
</div> <!-- webdav-proxy -->
<div class="h3" id="cyrus-sasl" title="cyrus-sasl">
<h3>Cyrus SASL support for ra_svn and <tt>svnserve</tt> (<em>client
and server</em>)</h3>
<p>XXX: Described <a
href="http://svn.collab.net/repos/svn/trunk/notes/sasl.txt">here</a>.</p>
</div> <!-- cyrus-sasl -->
<div class="h3" id="changelist-support" title="changelist-support">
<h3>Changelist support (<em>client</em>)</h3>
<p>XXX: Described <a
href="http://svn.collab.net/repos/svn/trunk/notes/changelist-design.txt"
>here</a>.</p>
</div> <!-- changelist-support -->
<div class="h3" id="fsfs-sharding" title="fsfs-sharding">
<h3>FSFS sharding</h3>
<p>XXX: Useful for file systems which don't perform well with a large
number of files in a directory -- see blog entry <a
href="http://www.farside.org.uk/200704/tree_structured_fsfs">here</a>.
<a
href="http://svn.collab.net/repos/svn/trunk/tools/server-side/fsfs-reshard.py"
>Migration script</a> provided.</p>
</div> <!-- fsfs-sharding -->
</div> <!-- new-features -->
<div class="h2" id="enhancements" title="enhancements">
<h2>Enhancements and Bugfixes</h2>
<div class="h3" id="copy-move-improvements" title="copy-move-improvements">
<h3>Copy/move improvements</h3>
<p>XXX</p>
</div> <!-- copy-move-improvements -->
<div class="h3" id="cancellation-improvements"
title="cancellation-improvements">
<h3>Cancellation improvements (<em>client</em>)</h3>
<p>XXX</p>
</div> <!-- cancellation-improvements -->
<div class="h3" id="cmdline" title="cmdline">
<h3>Command-line client improvements (<em>client</em>)</h3>
<ul>
<li>A <code>--use-merge-history</code> option to adhere to Merge
Tracking meta data has been added to the following sub-commands:
<ul>
<!-- li>blame</li -->
<li>log</li>
<li>merge</li>
</ul>
</li>
<li>A <code>--parents</code> option to create intermediate
directories has been added to the following sub-commands:
<ul>
<li>add</li>
<li>copy</li>
<li>move</li>
<li>mkdir</li>
</ul>
</li>
<!-- ### Anticipated addition(s):
<li><code>--merged-from</code> and <code>--merged-to</code> options
to report on merge info have been added to the <code>info</code>
sub-command.</li>
<li>An <code>--accept=orig|mine|repo</code> option to select which
version of a path to retain has been added to the
<code>resolved</code> sub-command.</li>
-->
<li>A <code>--keep-local</code> option to retain paths locally has
been added to the <code>delete</code> sub-command.</li>
</ul>
</div> <!-- cmdline -->
<div class="h3" id="javahl-improvements" title="javahl-improvements">
<h3>Javahl bindings improvements</h3>
<p>XXX: Should this go into the APIs section?</p>
</div> <!-- javahl-improvements -->
<div class="h3" id="apis" title="apis">
<h3>API improvements (<em>client and server</em>)</h3>
<p>If you develop a 3rd-party client application that uses Subversion
APIs, you may want to take notice of some new APIs:</p>
<ul>
<li>XXX: Enumerate specific new API additions (e.g. merge info
retrieval?)</li>
<li>APIs backing the new <a href="#cmdline">Command-line client
improvements</a> section have been added.</li>
<li>Many APIs have been revised to newer versions.</li>
</ul>
</div> <!-- apis -->
<div class="h3" id="dav-modules" title="dav-modules">
<h3>Easier to try out experimental <tt>ra_serf</tt> DAV access module
(<em>client</em>)</h3>
<p>Subversion 1.4 introduced the experimental <tt>ra_serf</tt>
repository access module for accessing HTTP[S] DAV Subversion servers.
This uses the <a href="http://code.google.com/p/serf/">serf</a>
library instead of the Neon library which the original DAV support
uses. serf supports pipelined requests which may lead to better
performance. However, Subversion 1.4 required you to choose which
module to use for accessing DAV servers at build time, which made it
difficult to find out which module performs better for your usage
patterns.</p>
<p>Subversion 1.5 allows you to build both modules at the same time;
you can choose which library to use on a global or host-by-host basis
by setting the <tt>http-library</tt> variable in your run-time server
configuration file (<tt>~/.subversion/servers</tt>). In recognition
of the fact that both libraries are DAV clients, we have
renamed <tt>ra_dav</tt> to <tt>ra_neon</tt>.</p>
</div> <!-- dav-modules -->
<div class="h3" id="bug-fixes" title="bug-fixes">
<h3>Other bug fixes (<em>client and server</em>)</h3>
<p>The usual slew of heretofore-unreleased bug fixes, more than 40
overall. See the
<a href="http://svn.collab.net/repos/svn/trunk/CHANGES">CHANGES</a>
file for full details.</p>
</div> <!-- bug-fixes -->
</div> <!-- enhancements -->
<div class="h2" id="svn-1.3-deprecation" title="svn-1.3-deprecation">
<h2>Subversion 1.3.x series no longer supported</h2>
<p>The Subversion 1.3.x line is no longer supported. This doesn't
mean that your 1.3 installation is doomed; if it works well and is all
you need, that's fine. "No longer supported" just means we've stopped
accepting bug reports against 1.3.x versions, and will not make any
more 1.3.x bugfix releases, except perhaps for absolutely critical
security or data-loss bugs.</p>
</div> <!-- svn-1.3-deprecation -->
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