4.0.11.html

---
version: 4.0.11
branch: 4.0
date: 2013-10-16
advisory:
- version: 4.0.11
  url: 4.0.10
redirect_from:
- /releases/4.0.11/release-notes
---


<h1>Bugzilla 4.0.11 Release Notes</h1>

<ul class="bz_toc">
  <li><a href="#v40_introduction">Introduction</a></li>
  <li><a href="#v40_point">Updates in this 4.0.x Release</a></li>
  <li><a href="#v40_req">Minimum Requirements</a></li>
  <li><a href="#v40_feat">New Features and Improvements</a></li>
  <li><a href="#v40_issues">Outstanding Issues</a></li>
  <li><a href="#v40_upgrading">Notes On Upgrading From a Previous Version</a></li>
  <li><a href="#v40_code_changes">Code Changes Which May Affect 
    Customizations and Extensions</a></li>
  <li><a href="#v40_previous">Release Notes for Previous Versions</a></li>
</ul>

<h2 id="v40_introduction">Introduction</h2>

<p>This is Bugzilla 4.0! Since 3.6 (our previous major
  release) we've come a long way, and we've come even further compared to
  3.0 in 2007! Since Bugzilla 3.0, almost every major user
  interface in Bugzilla has been redesigned, the WebServices have
  evolved enormously, there's a great new Extensions system, and there
  are hundreds of other new features. With the major redesigns that come
  particularly in this release compared to 3.6, we felt that it was time to
  call this release 4.0.</p>

<p>It's not just major WebService and UI enhancements that are new in
  Bugzilla 4.0&mdash;there are many other exciting new features,
  including automatic duplicate detection, enhanced custom field
  functionality, autocomplete for users, search improvements, and much
  more. Overall, 4.0 is far and away the best version of Bugzilla
  we've ever released.</p>

<p>If you're upgrading, make sure to read <a href="#v40_upgrading">Notes
  On Upgrading From a Previous Version</a>. If you are upgrading from a release
  before 3.6, make sure to read the release notes for all the 
  <a href="#v40_previous">previous versions</a> in between your version
  and this one, <strong>particularly the Upgrading section of each
  version's release notes</strong>.</p>

<p>We would like to thank
  <a href="http://www.itasoftware.com/">ITA Software</a>,
  the <a href="http://www.ibm.com/linux/ltc/">IBM Linux Technology Center</a>,
  and <a href="http://www.redhat.com/">Red Hat</a> for funding the development
  of certain features and improvements in this release of
  Bugzilla.</p>

<h2 id="v40_point">Updates in this 4.0.x Release</h2>

<h3>4.0.11</h3>

<p>This release fixes two security issues. See the
  <a href="https://www.bugzilla.org/security/4.0.10/">Security Advisory</a>
  for details.</p>

<p>In addition, the following bugs have been fixed in this release:</p>

<ul>
  <li>Bugzilla can now be installed with MySQL 5.6 as DB server.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=852560">Bug 852560</a>)</li>
  <li>Internet Explorer 11 can now display buglists correctly.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=902515">Bug 902515</a>)</li>
  <li>With DB servers doing case-insensitive comparisons, such as MySQL, tokens
    and login cookies were not correctly validated as the case was ignored.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=906745">Bug 906745</a> and
    <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=907438">bug 907438</a>)</li>
  <li>All security headers (such as X-Frame-Options) are now returned when using XML-RPC.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=787328">Bug 787328</a>)</li>
</ul>

<h3>4.0.10</h3>

<p>This release fixes two security issues. See the
  <a href="https://www.bugzilla.org/security/3.6.12/">Security Advisory</a>
  for details.</p>

<p>In addition, the following bugs have been fixed in this release:</p>

<ul>
  <li>Warnings thrown by Return::Value 1.666002 about this deprecated module
    and which are polluting the web server error log are now disabled.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=826678">Bug 826678</a>)</li>
  <li>Bugzilla now works correctly with Perl 5.16.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=771100">Bug 771100</a>)</li>
</ul>

<h3>4.0.9</h3>

<p>This release fixes several security issues. See the
  <a href="https://www.bugzilla.org/security/3.6.11/">Security Advisory</a>
  for details.</p>

<p>In addition, the following bugs have been fixed in this release:</p>

<ul>
  <li>Flag names were not properly escaped when displayed on the "confirm user
    match" page. An admin could unintentionally break the display of this page
    if a flag name contains a &lt; or &gt; character, because these characters
    were not filtered.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=790215">Bug 790215</a>)</li>
  <li>Bugs with the resolution MOVED couldn't be edited anymore.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=757935">Bug 757935</a>)</li>
  <li>Editing dependencies from the "Change Several Bugs at Once"
    page didn't work as expected. Bug IDs were incorrectly parsed.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=790909">Bug 790909</a>)</li>
</ul>

<h3>4.0.8</h3>

<p>This release fixes two security issues. See the
  <a href="https://www.bugzilla.org/security/3.6.10/">Security Advisory</a>
  for details.</p>

<p>This release also fixes a problem where an admin could unintentionally
  break the display of buglists if a custom field description contains
  a &lt; or &gt; character, because these characters were not filtered.
  (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=785917">Bug 785917</a>)</p>

<h3>4.0.7</h3>

<p>This release fixes one security issue. See the
  <a href="https://www.bugzilla.org/security/3.6.9/">Security Advisory</a>
  for details.</p>

<p>In addition, the following bugs have been fixed in this release:</p>

<ul>
  <li>A regression introduced in Bugzilla 4.0 caused some login
    names to be ignored when entered in the CC list of bugs.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=756314">Bug 756314</a>)</li>
  <li>Keywords are now correctly escaped in the auto-complete form to prevent
    any XSS abuse.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=754561">Bug 754561</a>)</li>
  <li>A regression introduced in Bugzilla 4.0rc2 when fixing
    CVE-2011-0046 caused the "Un-forget the search" link to not work correctly
    anymore when restoring a deleted saved search, because this link was
    lacking a valid token.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=768870">Bug 768870</a>)</li>
</ul>

<h3>4.0.6</h3>

<p>This release fixes two security issues. See the
  <a href="https://www.bugzilla.org/security/3.6.8/">Security Advisory</a>
  for details.</p>

<p>In addition, the following bug has been fixed in this release:</p>

<ul>
  <li>Due to a regression introduced when fixing CVE-2012-0453, if an XML-RPC
    client sets the charset as part of its Content-Type header, we were
    incorrectly rejecting the request. The header is now correctly parsed.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=731219">Bug 731219</a>)</li>
</ul>

<h3>4.0.5</h3>

<p>This release fixes one security issue. See the
  <a href="https://www.bugzilla.org/security/4.0.4/">Security Advisory</a>
  for details.</p>

<p>In addition, the following important change has been made in this release:</p>

<ul>
  <li>Clickjacking could possibly occur in the attachment "View All" page if a user
  attached a specially formatted HTML file. To fix this potential problem, the
  "View All" page now always displays the source code for all attachments whose
  MIME type is <em>text/html</em>.
  (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=722161">Bug 722161</a>)</li>
</ul>

<h3>4.0.4</h3>

<p>This release fixes two security issues. See the
  <a href="https://www.bugzilla.org/security/3.4.13/">Security Advisory</a>
  for details.</p>

<p>In addition, the following important fixes/changes have been made in this
  release:</p>

<ul>
  <li>Clickjacking could possibly occur in the attachment Details page if a user attached
  a specially formatted HTML file. To fix this potential problem,  the Details page now always 
  displays the source code for all attachments whose MIME type is text/html,  and users
  can see the rendered page by clicking on View.
  (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=716283">Bug 716283</a>)</li>
  <li>Previously, WebServices would only work with <kbd>JSON::RPC</kbd> 0.96 or 
  older due to newer versions being incompatible. <kbd>JSON::RPC</kbd> 1.x is now 
  supported as well.
  (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=706753">Bug 706753</a>)</li>
  <li>User autocompletion for the requestee and requester fields in request.cgi and
  the watch users field in userprefs.cgi were not working properly.
  (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=715705">Bug 715705</a>)
  (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=715650">Bug 715650</a>)</li>
</ul>

<h3>4.0.3</h3>

<p>This release fixes two security issues. See the
  <a href="https://www.bugzilla.org/security/3.4.12/">Security Advisory</a>
  for details.</p>

<p>In addition, the following important fixes/changes have been made in this
  release:</p>

<ul>
  <li>It was impossible to install or upgrade Bugzilla if <kbd>DBD::Pg</kbd>
    is installed and your Perl installation has <kbd>version.pm</kbd> 0.92 or newer,
    due to an incompatible change made in <kbd>version.pm</kbd> 0.92.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=678772">Bug 678772</a>)</li>
  <li>When reporting a new bug using the Guided Form, groups configured
    to be selected by default were ignored and the bug was left publicly
    visible, unless some mandatory groups applied. Now default groups are correctly
    taken into account, and the bug will be restricted to these groups.
    New bugs reported using the standard form are not affected by this
    issue.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=460074">Bug 460074</a>)</li>
  <li>A new parameter named 'ajax_user_autocompletion' has been added to allow
    administrators to disable auto-completion when typing characters in user fields.
    This parameter should only be disabled if your installation is unable to support
    the load generated by this feature.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=685552">Bug 685552</a>)</li>
  <li>Account lockout notifications were not sent to the maintainer of the Bugzilla
    installation.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=707594">Bug 707594</a>)</li>
  <li>Duplicate bug detection, simple searches and quicksearches did not
    work when using Oracle as the database.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=654496">Bug 654496</a>
    and <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=582209">bug 582209</a>)</li>
  <li>If a product has no components defined, selecting a product in the Advanced Search
    page was displaying the wrong list of components.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=622487">Bug 622487</a>)</li>
  <li>Custom field values whose visibility depends on another field value did not
    remain selected after editing a bug.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=707428">Bug 707428</a>)</li>
  <li><kbd>importxml.pl</kbd> was unable to import bugs anymore
    (regressed in 4.0.1).
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=691845">Bug 691845</a>)</li>
  <li><kbd>migrate.pl</kbd> was unable to run (regressed in 4.0).
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=682203">Bug 682203</a>)</li>
  <li><kbd>whine.pl</kbd> was failing to execute if a saved search threw an error.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=277073">Bug 277073</a>)</li>
  <li>Emails sent by <kbd>whine.pl</kbd> had the address of the assignee either
    truncated or missing completely (regressed in 3.4). The full email address
    is now properly displayed.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=550299">Bug 550299</a>)</li>
</ul>

<h3>4.0.2</h3>

<p>This release fixes several security issues. See the
  <a href="https://www.bugzilla.org/security/3.4.11/">Security Advisory</a>
  for details.</p>

<p>In addition, the following important fixes/changes have been made in this
  release:</p>

<ul>
  <li>The <kbd>Bug.create</kbd> WebService method now throws an error if you
    pass a group name which doesn't exist. In Bugzilla 4.0 and 4.0.1,
    this group name was silently ignored, leaving your bug unsecure
    if no other group applied.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=653341">Bug 653341</a>)</li>
  <li>Moving several bugs at once into another product displayed the
    same confirmation page again and again, and changes were never committed
    (regressed in 4.0).
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=663208">Bug 663208</a>)</li>
  <li>Marking a bug as a duplicate now works in Internet Explorer 9.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=656769">Bug 656769</a>)</li>
  <li><kbd>importxml.pl</kbd> no longer crashes when importing keywords (regressed
    in 4.0).
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=657707">Bug 657707</a>)</li>
  <li>Data entered while reporting a new bug could be lost if you had
    to click the "Back" button of your web browser.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=652427">Bug 652427</a>)</li>
  <li>WebServices methods will return undefined bug fields as undefined
    instead of as an empty string. This change is consistent with how
    Bugzilla 4.2 behaves.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=657561">Bug 657561</a>)</li>
  <li>The XML-RPC interface now works with SOAP::Lite 0.711 and 0.712 under mod_perl.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=600810">Bug 600810</a>)</li>
  <li>LWP 6.00 and newer require Perl 5.8.8 and above. When installing this module
    using <kbd>install-module.pl</kbd> on a Perl installation older than 5.8.8,
    LWP 5.837 will be installed instead.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=655912">Bug 655912</a>)</li>
  <li>Viewing a bug report should be significantly faster when your
    installation has many custom fields.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=634812">Bug 634812</a>)</li>
</ul>

<h3>4.0.1</h3>

<ul>
  <li>During installation, the CPAN module Math::Random::Secure would
    sometimes fail to install properly and give an error about
    <kbd>Math::Random::Secure::irand</kbd>. Now, when using
    <kbd>install-module.pl</kbd> to install Math::Random::Secure, this
    will no longer happen. If you are currently experiencing this bug
    and it prevented you from installing 4.0, remove Math::Random::Secure
    from your <kbd>lib/</kbd> directory, like:
    <p><kbd>rm -rf lib/Math/Random/Secure*</kbd></p>
    <p>(<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=646578">Bug 646578</a>)</p></li>
  <li>The "Remember values as bookmarkable template" button on the
    bug entry page will now work even when some required fields
    are empty. 
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=640719">Bug 640719</a>)</li>
  <li>Email notifications about dependencies and flags had the wrong
    timestamp.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=643910">Bug 643910</a>
    and <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=652165">bug 652165</a>)</li>
  <li>You can now select "UTC" as a valid timezone in General Preferences.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=646209">Bug 646209</a>)</li>
  <li>Automatic duplicate detection now works on PostgreSQL (although
    it is not as high-quality as on other DB platforms). 
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=634144">Bug 634144</a>)</li>
   <li>Autcomplete for users now works even if you are using the
     "emailsuffix" option.
     (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=641519">Bug 641519</a>)</li>
   <li>Javascript errors during series creation in New Charts have been
     fixed.
     (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=644285">Bug 644285</a>)</li>
    <li>The "Show Votes" page now works, for installations using the Voting
      extension.
      (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=652381">Bug 652381</a>)</li> 
</ul>

<h2 id="v40_req">Minimum Requirements</h2>

<p>Any requirements that are new since 3.6.3 will look like
  <span class="req_new">this</span>.</p>

<ul>
  <li><a href="#v40_req_perl">Perl</a></li>
  <li><a href="#v40_req_mysql">For MySQL Users</a></li>
  <li><a href="#v40_req_pg">For PostgreSQL Users</a></li>
  <li><a href="#v40_req_oracle">For Oracle Users</a></li>
  <li><a href="#v40_req_modules">Required Perl Modules</a></li>
  <li><a href="#v40_req_optional_mod">Optional Perl Modules</a></li>
  <li><a href="#v40_req_apache">Optional Apache Modules</a></li>
</ul>


<h3 id="v40_req_perl">Perl</h3>

<p>Perl v5.8.1</p>
<h3 id="v40_req_mysql">For MySQL Users</h3>

  <ul>
    <li>MySQL
       v4.1.2
       </li>
    <li><strong>perl module:</strong>
      DBD::mysql v4.00</li>
  </ul>
<h3 id="v40_req_pg">For PostgreSQL Users</h3>

  <ul>
    <li>PostgreSQL
       v8.00.0000
       </li>
    <li><strong>perl module:</strong>
      DBD::Pg v1.45</li>
  </ul>
<h3 id="v40_req_oracle">For Oracle Users</h3>

  <ul>
    <li>Oracle
       v10.02.0
       </li>
    <li><strong>perl module:</strong>
      DBD::Oracle v1.19</li>
  </ul>

<h3 id="v40_req_modules">Required Perl Modules</h3>
<table class="req_table" border="0" cellspacing="0" cellpadding="0">
    <tr>
      <th>Module</th> <th>Version</th>
    </tr>
      <tr>
        <td >CGI</td> 
        <td  class="req_new">3.51
        </td>
      </tr>
      <tr>
        <td >Digest::SHA</td> 
        <td >
            (Any)
        </td>
      </tr>
      <tr>
        <td >Date::Format</td> 
        <td >2.21
        </td>
      </tr>
      <tr>
        <td >DateTime</td> 
        <td >0.28
        </td>
      </tr>
      <tr>
        <td >DateTime::TimeZone</td> 
        <td >0.71
        </td>
      </tr>
      <tr>
        <td >DBI</td> 
        <td >1.41
        </td>
      </tr>
      <tr>
        <td >Template</td> 
        <td >2.22
        </td>
      </tr>
      <tr>
        <td >Email::Send</td> 
        <td >2.00
        </td>
      </tr>
      <tr>
        <td >Email::MIME</td> 
        <td  class="req_new">1.904
        </td>
      </tr>
      <tr>
        <td >URI</td> 
        <td >
            (Any)
        </td>
      </tr>
      <tr>
        <td  class="req_new">List::MoreUtils</td> 
        <td  class="req_new">0.22
        </td>
      </tr>
</table>

<h3 id="v40_req_optional_mod">Optional Perl Modules</h3>

<p>The following perl modules, if installed, enable various
  features of Bugzilla:</p>
<table class="req_table" border="0" cellspacing="0" cellpadding="0">
    <tr>
      <th>Module</th> <th>Version</th>
        <th>Enables Feature</th>
    </tr>
      <tr>
        <td >GD</td> 
        <td >1.20
        </td> 
          <td>Graphical Reports, New Charts, Old Charts</td>
      </tr>
      <tr>
        <td >Chart::Lines</td> 
        <td >2.1
        </td> 
          <td>New Charts, Old Charts</td>
      </tr>
      <tr>
        <td >Template::Plugin::GD::Image</td> 
        <td >
            (Any)
        </td> 
          <td>Graphical Reports</td>
      </tr>
      <tr>
        <td >GD::Text</td> 
        <td >
            (Any)
        </td> 
          <td>Graphical Reports</td>
      </tr>
      <tr>
        <td >GD::Graph</td> 
        <td >
            (Any)
        </td> 
          <td>Graphical Reports</td>
      </tr>
      <tr>
        <td >MIME::Parser</td> 
        <td >5.406
        </td> 
          <td>Move Bugs Between Installations</td>
      </tr>
      <tr>
        <td >LWP::UserAgent</td> 
        <td >
            (Any)
        </td> 
          <td>Automatic Update Notifications</td>
      </tr>
      <tr>
        <td >XML::Twig</td> 
        <td >
            (Any)
        </td> 
          <td>Move Bugs Between Installations, Automatic Update Notifications</td>
      </tr>
      <tr>
        <td >PatchReader</td> 
        <td >0.9.4
        </td> 
          <td>Patch Viewer</td>
      </tr>
      <tr>
        <td >Net::LDAP</td> 
        <td >
            (Any)
        </td> 
          <td>LDAP Authentication</td>
      </tr>
      <tr>
        <td >Authen::SASL</td> 
        <td >
            (Any)
        </td> 
          <td>SMTP Authentication</td>
      </tr>
      <tr>
        <td >Authen::Radius</td> 
        <td >
            (Any)
        </td> 
          <td>RADIUS Authentication</td>
      </tr>
      <tr>
        <td >SOAP::Lite</td> 
        <td  class="req_new">0.712
        </td> 
          <td>XML-RPC Interface</td>
      </tr>
      <tr>
        <td >JSON::RPC</td> 
        <td >
            (Any)
        </td> 
          <td>JSON-RPC Interface</td>
      </tr>
      <tr>
        <td  class="req_new">JSON::XS</td> 
        <td  class="req_new">2.0
        </td> 
          <td>Make JSON-RPC Faster</td>
      </tr>
      <tr>
        <td >Test::Taint</td> 
        <td >
            (Any)
        </td> 
          <td>JSON-RPC Interface, XML-RPC Interface</td>
      </tr>
      <tr>
        <td >HTML::Parser</td> 
        <td >3.40
        </td> 
          <td>More HTML in Product/Group Descriptions</td>
      </tr>
      <tr>
        <td >HTML::Scrubber</td> 
        <td >
            (Any)
        </td> 
          <td>More HTML in Product/Group Descriptions</td>
      </tr>
      <tr>
        <td >Email::MIME::Attachment::Stripper</td> 
        <td >
            (Any)
        </td> 
          <td>Inbound Email</td>
      </tr>
      <tr>
        <td >Email::Reply</td> 
        <td >
            (Any)
        </td> 
          <td>Inbound Email</td>
      </tr>
      <tr>
        <td >TheSchwartz</td> 
        <td >
            (Any)
        </td> 
          <td>Mail Queueing</td>
      </tr>
      <tr>
        <td >Daemon::Generic</td> 
        <td >
            (Any)
        </td> 
          <td>Mail Queueing</td>
      </tr>
      <tr>
        <td >mod_perl2</td> 
        <td >1.999022
        </td> 
          <td>mod_perl</td>
      </tr>
      <tr>
        <td >Apache2::SizeLimit</td> 
        <td  class="req_new">0.93
        </td> 
          <td>mod_perl</td>
      </tr>
      <tr>
        <td  class="req_new">Math::Random::Secure</td> 
        <td  class="req_new">0.05
        </td> 
          <td>Improve cookie and token security</td>
      </tr>
</table>

<h3 id="v40_req_apache">Optional Apache Modules</h3>

<p>If you are using Apache as your webserver, Bugzilla can
  now take advantage of some Apache features if you have the below Apache
  modules installed and enabled. Currently,
  <a href="#v40_feat_js_css_update">certain Bugzilla features</a>
  are enabled only if you have all of the following modules installed
  and enabled:</p>

<ul>
  <li>mod_headers</li>
  <li>mod_expires</li>
  <li>mod_env</li>
</ul>

<p>On most systems (but not on Windows), <kbd>checksetup.pl</kbd> is able to
  tell whether or not you have these modules installed, and it will tell
  you.</p>

<h2 id="v40_feat">New Features and Improvements</h2>

<ul>
  <li><a href="#v40_feat_dup">Automatic Duplicate Detection When Filing
    Bugs</a></li>
  <li><a href="#v40_feat_search_ui">New Advanced Search UI</a></li>
  <li><a href="#v40_feat_attach_ui">New Attachment Details UI</a></li>
  <li><a href="#v40_feat_autocomplete">Autocomplete for Users and
    Keywords</a></li>
  <li><a href="#v40_feat_ui">General Usability Improvements</a></li>
  <li><a href="#v40_feat_workflow">New Default Status Workflow</a></li>
  <li><a href="#v40_feat_lists">"Last Search" Now Remembers Multiple
    Searches</a></li>
  <li><a href="#v40_feat_jsonp">Cross-Domain WebServices with JSONP</a></li>
  <li><a href="#v40_feat_ws">Major WebService Enhancements</a></li>
  <li><a href="#v40_feat_mandatory">Mandatory Custom Fields</a></li>
  <li><a href="#v40_feat_vot_ext">Voting Is Now An Extension</a></li>
  <li><a href="#v40_feat_js_css_update">Users Get New CSS and Javascript
    Automatically</a></li>
  <li><a href="#v40_feat_hooks">Many New Hooks</a></li>
  <li><a href="#v40_feat_apache_config">New Apache Configuration</a></li>
  <li><a href="#v40_feat_other">Other Enhancements and Changes</a></li>
</ul>

<h3 id="v40_feat_dup">Automatic Duplicate Detection When Filing
  Bugs</h3>

<p>When filing a bug, as soon as you start typing in the summary
  field, Bugzilla will suggest possible duplicates of the
  bug you are filing.</p>

<p>In order for this feature to work, all pre-requisites for JSON-RPC
  support must be installed on your Bugzilla. It will be
  much faster on installations that run under mod_perl than it will
  be on other installations.</p>

<h3 id="v40_feat_search_ui">New Advanced Search UI</h3>

<p>Thanks to the UI work of <a href="http://guy-pyrzak.blogspot.com/">Guy
  Pyrzak</a>, the Advanced Search UI has been completely redesigned.
  It is now much simpler, and far more approachable for new users, while
  still retaining all of the features that power users are used to.</p>

<h3 id="v40_feat_attach_ui">New Attachment Details UI</h3>

<p>The UI used for editing attachment details has been completely
  redesigned, allowing for a normally-size comment box to be used
  when commenting on attachments, and allowing nearly the entire screen
  width to be used when doing code reviews or editing an attachment as
  a comment.</p>

<p>Thanks to <a href="http://guy-pyrzak.blogspot.com/">Guy Pyrzak</a> for
  his excellent work on this UI redesign.</p>

<h3 id="v40_feat_autocomplete">Autocomplete for Users and Keywords</h3>

<p>Once you type at least three characters in any field that can contain a user
  (including the CC,
  QA Contact, or
  Assignee fields), a list will appear
  containing all of the users whose real names or usernames match what you are
  typing. Your Bugzilla must have all of the optional Perl
  modules required for JSON-RPC support installed, though, in order for
  this feature to work. Also, this feature will be <strong>much</strong>
  faster on installations that run under mod_perl than it will be on
  other installations.</p>

<p>There is also a similar autocomplete for the Keywords field. The
  Keywords autocomplete does not require JSON-RPC.</p>

<h3 id="v40_feat_ui">General Usability Improvements</h3>

<p>In addition to the enhancements listed above, there have been
  <strong>many</strong> improvements made across the Bugzilla
  user interface. For a list of specific enhancements that were significant,
  see the <a href="#v40_feat_other">Other Enhancements and Changes</a>
  section.</p>

<h3 id="v40_feat_workflow">New Default Status Workflow</h3>

<p>For new installations of Bugzilla, the default set of
  statuses will now be:</p>

<ul>
  <li>UNCONFIRMED</li>
  <li>CONFIRMED</li>
  <li>IN_PROGRESS</li>
  <li>RESOLVED</li>
  <li>VERIFIED</li>
</ul>

<p>And the UNCONFIRMED status will be enabled by default in all products.</p>

<p>On upgrade, existing installations will not be affected--you will retain
  your existing status workflow. However, we strongly recommend that you
  update your existing workflow to the new one, using a special tool
  we've included, <kbd>contrib/convert-workflow.pl</kbd>, which you
  can run after you use <kbd>checksetup.pl</kbd> to upgrade. The
  <kbd>whineatnews.pl</kbd> and <kbd>bugzilla-submit</kbd> scripts
  will probably not work properly if you continue to use the old workflow
  (though most other parts of Bugzilla will still function
  normally).</p>

<p>For more information about the workflow and our rationale for changing
  it, see the
  <a href="https://bugzillaupdate.wordpress.com/2010/07/06/bugzilla-4-0-has-a-new-default-status-workflow/">blog
  post about it</a> and the
  <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=486292">bug
  where the change was made</a>.</p>

<h3 id="v40_feat_lists">"Last Search" Now Remembers Multiple Searches</h3>

<p>At the top of every bug in Bugzilla, there are
  links that look like: "First", "Last", "Prev", "Next", and
  "Show last search results". In earlier versions of Bugzilla,
  if you did two separate searches in separate windows, these links would
  only work for the <em>last</em> search you did. Now, Bugzilla
  will "remember" which search result you came from and give you the right
  "last search results" or "next bug" from <em>that</em> list,
  instead of always using your most recent search.</p>

<p>There are still some situations where Bugzilla will have to
  "guess" which search you are trying to navigate through, but it does its
  best to get it right.</p>

<h3 id="v40_feat_jsonp">Cross-Domain WebServices with JSONP</h3>

<p>Bugzilla now supports making WebService calls from
  another domain, inside of a web browser, thanks to support for
  <a href="http://bob.pythonmac.org/archives/2005/12/05/remote-json-jsonp/">JSONP</a>.
  This will allow for web "mash-ups" to use Bugzilla data.
  When using JSONP, you may only call functions that <em>get</em> data, 
  you may not call functions that <em>change</em> data.</p>

<p>For more details, see the
  <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService/Server/JSONRPC.html#JSONP">JSONP
  section</a> of the JSON-RPC WebService documentation.</p>

<h3 id="v40_feat_ws">Major WebService Enhancements</h3>

<p>The WebService has been expanded considerably. The WebService should now be
  able to do everything with bugs that you can do via the
  web interface, including updating bugs, adding attachments,
  and getting attachment data. For specifics, see the
  <a href="#v40_feat_ws_changes">WebService Changes</a> section of these
  release notes.</p>

<h3 id="v40_feat_mandatory">Mandatory Custom Fields</h3>

<p>You can now specify that certain custom fields are "mandatory",
  meaning that they must have a value when a bug is filed,
  and they can never be empty after that.</p>

<h3 id="v40_feat_vot_ext">Voting Is Now An Extension</h3>

<p>All of the code for voting in Bugzilla has been moved
  into an extension, called "Voting", in the <kbd>extensions/Voting/</kbd>
  directory. To enable it, you must remove the <kbd>disabled</kbd> file
  from that directory, and run <kbd>checksetup.pl</kbd>.</p>

<p>In a future version of Bugzilla, the Voting extension will
  be moved outside of the Bugzilla core code, so we are looking
  for somebody who has an interest in the Voting system and would like to
  maintain it as a separate extension. There are many enhancement requests
  that have been made against the Voting system, and the best way for those
  to get addressed is for somebody to step up and offer to maintain the
  system outside of Bugzilla's core code.</p>

<h3 id="v40_feat_js_css_update">Users Get New CSS and Javascript
  Automatically</h3>
  
<p>In past versions of Bugzilla, if you changed
  Bugzilla's CSS or Javascript files, then every user of
  Bugzilla would have to clear their cache in order to get
  the updated files. Now, if you are using Apache as your webserver and
  you have the <a href="#v40_req_apache">optional Apache modules</a>
  installed and enabled, users will automatically get every new version of
  Bugzilla's Javascript and CSS without having to clear
  their caches.</p>

<p>This feature also gives a slight performance speedup to
  Bugzilla in some cases, and so we recommend that all
  administrators install and enable the optional Apache modules if possible.</p>

<h3 id="v40_feat_hooks">Many New Hooks</h3>

<p>Many new code hooks have been added for use by Extensions,
  in Bugzilla 4.0. Now Extensions can access and modify
  nearly every part of Bugzilla.</p>

<h3 id="v40_feat_apache_config">New Apache Configuration</h3>

<p>If you run Bugzilla under Apache (as most people do),
  you most likely require a <strong>new Apache configuration</strong> 
  for this version of Bugzilla. See the 
  <a href="#v40_upgrading">Notes On Upgrading From a Previous Version</a>
  section for details.</p>

<h3 id="v40_feat_other">Other Enhancements and Changes</h3>

<h4>Enhancements for Users</h4>

<ul>
  <li>Now, everywhere in Bugzilla where you can enter a date,
    there is a Calendar widget where you can select the date on a
    calendar.</li>
  <li>The big icons on the front page have been replaced with much nicer
    icons, thanks to Jon Pink of <a href="http://www.jpink.co.uk/">J.&nbsp;Pink&nbsp;Design</a>!</li>
  <li><strong>Bugs:</strong> When filing bugs,
    you will now be warned if you forgot to fill in any mandatory fields,
    <em>before</em> the page is submitted.</li>
  <li><strong>Bugs:</strong> When filing a bug,
    you can hover your mouse over any of the field labels on the page
    to get a brief description of what that field is and what its purpose
    is.</li>
  <li><strong>Bugs:</strong> When adding Hours Worked to a bug,
    you are no longer required to comment.</li>
  <li><strong>Bugs:</strong> There is now a user preference
    for whether the comment box appears above or below the existing
    comments.</li>
  <li><strong>Bugs:</strong> Bugzilla will now
    send an email for every comment that you mark or un-mark as being
    private. (Previous versions of Bugzilla did not send emails
    to users about this change.) The state of comments being made private
    is also now stored in a bug's history.</li>
  <li><strong>Bugs:</strong> The box to "Add Bug URLs"
    in the See Also field is now hidden behind an "(add)" link that you
    have to click to see the box.</li>
  
  <li><strong>Searches:</strong> You can now properly search for field values
    that have commas in their name, when using the Advanced Search form.</li>
  <li><strong>Searches:</strong> The "URL" field can now be shown as a column
    in search results.</li>
  <li><strong>Searches:</strong> When viewing a search result, you can now
    click on the Summary of the bug in order to go to the
    bug-view page, in addition to being able to click on the
    bug ID.</li>
  <li><strong>Searches:</strong> When doing a search using the "quicksearch"
    box in the header or footer, the box will still contain what you searched
    for when viewing the search results page.</li>
  <li><strong>Searches:</strong> Multi-select custom fields can now be
    shown as columns in the search results.</li>
  <li><strong>Searches:</strong> When using the Boolean Charts (now called
    "Custom Search"), if you specify both a criterion for an attachment
    and a criteron for a flag, then only bugs that have
    attachments with that flag will be found.</li>
  <li><strong>Searches:</strong> If you hover your mouse over the field labels
    on the Advanced Search page, you will get a description of what that
    field is.</li>
  <li><strong>Searches:</strong> When searching via a saved search, if you
    accidentally click on "Forget Search", there is a link to undo it.</li>
  <li><strong>Searches:</strong> When using the Boolean Charts (now called
    "Custom Search"), you can search for values "greater than or equal to"
    or "less than or equal to" some value.</li>
  
  <li><strong>Flags:</strong> If you hover your mouse over the name of
    a flag setter when viewing a bug, you can see that
    flag setter's full name and complete username.</li>
  <li><strong>Flags:</strong> When setting a flag on a bug,
    the box for entering a requestee does not appear until you set the flag
    to "?", now.</li>
  <li><strong>Flags:</strong> On the "My Requests" page, bugs
    that are restricted to certain groups now properly have the "padlock"
    icon shown next to them to indicate that they may contain confidential
    information.</li>
  
  <li>When using the Reports interface, you can now choose many more fields
    as the X, Y, or Z axis of a report, including custom fields.</li>
  <li>Bugzilla now prevents
    Internet Explorer 8 and later from attempting to render
    <kbd>text/plain</kbd> attachments as HTML.</li>
  <li>If you receive a Whine mail that is empty, there will now be a brief
    message explaining that your search found no results.</li>
  <li>The <a href="https://landfill.bugzilla.org/bugzilla-4.0-branch/page.cgi?id=fields.html">Field Help Page</a> now
    contains a description of every single field that can be on
    a bug in Bugzilla.</li>
</ul>

<h4>Enhancements for Administrators and Developers</h4>

<ul>
  <li>The system for moving bugs between installations has been
    moved into an extension called <kbd>OldBugMove</kbd>. This system was used
    by very few Bugzilla installations--if you aren't certain
    whether or not you are using it, you're not using it. To enable the system,
    you have to remove the file <kbd>extensions/OldBugMove/disabled</kbd>
    and then run <kbd>checksetup.pl</kbd>. In a future version of Bugzilla,
    this extension may be moved outside of the core Bugzilla code,
    so if you are interested in maintaining it, please let us know.</li>
  <li><strong>Custom Fields: </strong> "Bug ID" custom fields can
    now represent relationships between bugs, similarly to how the
    Blocks and
    Depends on fields work now.</li>
  <li><strong>Custom Fields:</strong> You can now restrict the visibility
    of custom fields and their values to a specific Component or
    Classification.</li>
  <li>The "keyword cache" has been removed. When you edit keywords, you no
    longer will have to "rebuild the keyword cache" after you are done.</li>
  <li>Running <kbd>./collectstats.pl --regenerate</kbd> will now take
    minutes or hours, instead of days.</li>
  <li>When using <kbd>email_in.pl</kbd>, there are two new switches,
    <kbd>--default</kbd> and <kbd>--override</kbd>, which allow you to
    specify certain default values or override specified values for
    <kbd>@field</kbd> values sent in emails. (This also allows you to specify
    defaults for everything so that people do not have to specify any field
    values when filing a bug via email.)</li>
  <li><strong>Installation:</strong> If you are using a localized version of
    Bugzilla and your terminal does not understand Unicode,
    <kbd>checksetup.pl</kbd> will now attempt to output its messages in your
    terminal's character set.</li>
  <li><strong>Installation:</strong> Bugzilla no longer needs empty
    "placeholder" CSS in the <kbd>skins/custom</kbd> directory and other
    directories. When you update, <kbd>checksetup.pl</kbd> will remove these.
    This also significantly reduces the number of HTTP requests required to
    load a page for the first time in Bugzilla.</li>
  <li><strong>Installation:</strong> For Windows users, Bugzilla
    now supports Strawberry Perl fully.</li>
  <li><strong>Installation:</strong> Now, whenever <kbd>checksetup.pl</kbd>
    throws an error, it will be printed in the color red, to make it
    obvious that something is wrong.</li>
  <li><strong>Installation:</strong> Some actions of <kbd>checksetup.pl</kbd> were
    silent, in the past. Now, <kbd>checksetup.pl</kbd> will print a message for
    almost anything it does.</li>
  <li><strong>Installation:</strong> The process of adding foreign keys
    to a table is now much faster. This will particularly improve the speed
    of upgrading from Bugzilla 3.4 or earlier.</li>
  <li>If you are using <kbd>jobqueue.pl</kbd> and email gets heavily delayed
    for some reason, those emails will now have a Date header reflecting the
    time they were <em>supposed</em> to be sent, instead of when they actually
    <em>were</em> sent.</li>
  <li><kbd>./jobqueue.pl install</kbd> now works on SUSE Linux.</li>
  <li>Bugzilla now runs much better in Apache's suexec mode
    than it used to. As part of this, <kbd>checksetup.pl</kbd> sets
    much stricter permissions on all the files in Bugzilla
    than it used to. In particular, any files that Bugzilla
    does not know about will not be readable by the webserver.</li>
  <li>The <kbd>sendmailnow</kbd> parameter has been removed, as it was
    not necessary for any modern version of Sendmail or other Mail Transfer
    Agent.</li>
  <li>When editing a user via the Users administration panel, you can now
    see if they are a Default CC on any component.</li>
  <li>For new installations of Bugzilla, all users will be
    able to see and use the Whining system by default.</li>
  <li>When you are using SSL with Bugzilla, you can now
    turn on the <kbd>strict_transport_security</kbd> parameter to
    send the
    <a href="https://developer.mozilla.org/en/Security/HTTP_Strict_Transport_Security">Strict-Transport-Security</a>
    header with every HTTPS connection, for additional security.</li>
  <li>New code hooks (see their documentation in
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/Hook.html">Bugzilla::Hook</a>):
    bug_check_can_change_field, search_operator_field_override,
    bugmail_relationships, object_columns, object_update_columns,
    and object_validators. The colchange_columns hook has been removed,
    as it is no longer necessary (buglist_columns will be used for data
    about which columns can be on the bug list).</li>
  <li>When Bugzilla throws certain types of errors, it will
    now include a "traceback" of where exactly the error occurred in the
    code, to help administrators and developers debug problems.</li>
  <li>There is now a test, <kbd>xt/search.t</kbd>, that assures that all
    of the functionality of <kbd>Bugzilla::Search</kbd> is working properly.
    If you customize the search functionality of Bugzilla,
    you may wish to run this test to assure that your changes are correct.
    You can see more information about running this test by doing
    <kbd>perldoc xt/search.t</kbd> at the command line.</li>
  <li>Bugzilla now sends the
    <a href="https://developer.mozilla.org/en/the_x-frame-options_response_header"><code>X-Frame-Options: SAMEORIGIN</code></a> header
    with every page request in order to prevent "clickjacking" attacks. Note
    that this prevents other domains from displaying Bugzilla
    in an HTML frame.</li> 
</ul>

<h4 id="v40_feat_ws_changes">WebService Changes</h4>

<ul>
  <li>You can now call some JSON-RPC methods using HTTP GET, in addition to
    using HTTP POST. See the 
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService/Server/JSONRPC.html#Connecting_via_GET">JSON-RPC
    documentation</a> for details.</li>
  <li>You can now update existing bugs using the
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService/Bug.html#update">Bug.update</a>
    function.</li>
  <li>You can now add attachments to bugs using the
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService/Bug.html#add_attachment">Bug.add_attachment</a>
    function.</li>
  <li>The <kbd>Bug.get</kbd> function now returns all of a bug's
    information other than comments and attachments.</li>
  <li><kbd>Bug.get</kbd> no longer returns the <kbd>internals</kbd> hash.</li>
  <li>The <kbd>Bug.attachments</kbd> function now also returns attachment
    data.</li>
  <li>The following functions now support the <kbd>include_fields</kbd>
    and <kbd>exclude_fields</kbd> arguments: <kbd>Bug.get</kbd>,
    <kbd>Bug.search</kbd>, and <kbd>Bug.attachments</kbd>. Also,
    server-side performance of the WebService is actually increased when
    using these arguments, now, as Bugzilla will no longer
    get data from the database for fields you haven't asked for.</li>
  <li>You can now mark the initial description of a bug as
    private when filing a bug via the <kbd>Bug.create</kbd>
    function.</li>
  <li>You can now specify groups to put a bug in, in the
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService/Bug.html#create">Bug.create</a>
    function. (This also means that you can specify groups when filing
    a bug via email_in.pl.)</li>
  <li>The <kbd>User.get</kbd> function now accepts <kbd>groups</kbd>
    and <kbd>group_ids</kbd> arguments, to limit the returned values to
    only users in the specified groups.</li>
  <li>There is a new, undocumented Bug.possible_duplicates
    function that helps implement the automatic duplicate detection
    system. Because this function is not documented, its API may change
    between releases of Bugzilla.</li>
  <li>You can no longer search using the <kbd>votes</kbd> argument in
    <kbd>Bug.search</kbd>.</li>
  <li><kbd>Bug.attachments</kbd> now returns the attachment's description
    using the name "summary" instead of the name "description", to be
    consistent with the fact that bug summaries are called
    "summary". The value is still <em>also</em> returned as "description",
    for backwards compatibility, but this backwards compatibility will go
    away in Bugzilla 5.0.</li>
  <li>In the return values of various <kbd>Bug</kbd> functions, the author
    of comments, bugs, and attachments is now called "creator",
    instead of sometimes being called "reporter", "author", or "attacher".
    The old names are retained for backwards-compatibility, and will stay
    around until Bugzilla 5.0.</li>
</ul>

<h2 id="v40_issues">Outstanding Issues</h2>

<ul>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=423439">Bug 423439</a>: Tabs in comments will be converted
    to four spaces, due to a b<!-- -->ug in Perl as of Perl 5.8.8.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=89822">Bug 89822</a>: When changing multiple bugs at 
    the same time, there is no "mid-air collision" protection.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=276230">Bug 276230</a>: The support for restricting access to 
    particular Categories of New Charts is not complete. You should treat 
    the 'chartgroup' Param as the only access mechanism available.<br>
    However, charts migrated from Old Charts will be restricted to 
    the groups that are marked MANDATORY for the corresponding Product.
    There is currently no way to change this restriction, and the 
    groupings will not be updated if the group configuration
    for the Product changes.</li>
</ul>

<h2 id="v40_upgrading">Notes On Upgrading From a Previous Version</h2>

<h3>IMPORTANT: Apache Configuration Change</h3>

<h4>mod_cgi</h4>

<p>If you run Bugzilla under mod_cgi (this is the most common
  configuration, involving a &lt;Directory&gt; block in your Apache config
  file), you will need to update the configuration of Apache for 
  Bugzilla. In particular, this line in the Bugzilla
  <kbd>&lt;Directory&gt;</kbd> block:</p>

<blockquote><code>AllowOverride Limit</code></blockquote>

<p>needs to become:</p>

<blockquote><code>AllowOverride Limit FileInfo Indexes</code></blockquote>
 
<p>For full details on how to configure Apache for Bugzilla,
  see the
  <a href="https://www.bugzilla.org/docs/4.0/en/html/configuration.html#http-apache">Configuration</a>
  section of the Bugzilla Guide.</p>

<h4>mod_perl</h4>

<p>If your Bugzilla runs under mod_perl, the required Apache
  configuration is now simpler. The line that used to look like:</p>

<blockquote><code>PerlSwitches -w -T -I/var/www/html/bugzilla 
    -I/var/www/html/bugzilla/lib</code></blockquote>

<p>Now should be only:</p>

<blockquote><code>PerlSwitches -w -T</code></blockquote>

<p>The <code>PerlConfigRequire</code> line should stay the same, however.</p>

<h3>New .htaccess file</h3>

<p>In previous versions of Bugzilla, there was a file
  in Bugzilla's root directory called ".htaccess" that was
  generated by <kbd>checksetup.pl</kbd>. This file is now shipped with
  Bugzilla instead of being generated during installation.</p>

<p>If you update via CVS or bzr, you will get a message that your existing
  .htaccess file conflicts with the new one. You must
  <strong>remove your existing .htaccess file</strong> and use the new one
  instead. Continuing to use your old .htaccess file will cause certain new
  features of Bugzilla to not work properly, and may also lead
  to security issues for your system in the future.</p>

<h2 id="v40_code_changes">Code Changes Which May Affect Customizations and
  Extensions</h2>

<ul>
  <li>In Extensions, if you want to serve files to the user via the web,
    they must now be in a <kbd>web/</kbd> subdirectory of your Extension.
    (For example, <kbd>extensions/Foo/web/</kbd>). <kbd>checksetup.pl</kbd>
    sets permissions on extensions much more strictly now, and files in
    other locations (such as your base <kbd>extensions/Foo/</kbd> directory)
    will no longer be available to Bugzilla users via the web
    under certain configurations.</li>
  <li>Previous versions of Bugzilla used to allow putting a
    single file into the "skins" directory and having that be an entire
    skin. That is no longer allowed, and on upgrade, <kbd>checksetup.pl</kbd>
    will convert any such skins into a directory with a single
    <kbd>global.css</kbd> file in them.</li>
  <li>When updating bugs, you should now use
    <code>$bug-&gt;set_all</code> instead of using the individual
    <kbd>set_</kbd> methods. In particular, <kbd>set_all</kbd> is now the
    <em>only</em> way to set the product of a bug. See
    <kbd>process_bug.cgi</kbd> for an example of how <kbd>set_all</kbd>
    should be used.</li>
  <li>You should not insert &lt;script&gt; tags and &lt;link&gt; CSS tags
    into HTML anymore, in Extensions or in your customizations. Instead,
    you should push new values into the <kbd>style_urls</kbd> or
    <kbd>javascript_urls</kbd> parameters. If you have to insert manual
    tags for some reason, be sure to call "FILTER mtime" on the URL. (Search
    for other uses of "FILTER mtime" in the templates to see how it is
    used.)</li>
  <li>When calling <kbd>Bugzilla::BugMail::Send</kbd>, the "changer"
    argument must now be a <kbd>Bugzilla::User</kbd> object, not just
    a login name. The "owner" and "qacontact" arguments are still
    just login names.</li>
  <li>When creating a new subclass of Bugzilla::Object, you should no
    longer use <kbd>UPDATE_VALIDATORS</kbd>. Also, in most cases you will
    no longer need to override <kbd>run_create_validators</kbd>. Instead,
    there is a new constant called
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/Object.html#VALIDATOR_DEPENDENCIES">VALIDATOR_DEPENDENCIES</a>,
    that specifies that certain fields have to be validated before other fields.
    Then, all validators receive each already-validated value in a hash
    as their fourth argument, so each validator can know the other values
    that were passed in, while an object is being created. For an example of
    how to use <kbd>VALIDATOR_DEPENDENCIES</kbd>, see
    <kbd>Bugzilla/Field.pm</kbd>.</li>
  <li>In previous versions of Bugzilla, you had to call
    <code>Bugzilla-&gt;template_inner("")</code> after any time
    that you called <kbd>template_inner</kbd> for a specific language.
    It is no longer necessary to do this second <kbd>template_inner</kbd>
    call.</li>
  <li><kbd>post_bug.cgi</kbd> and <kbd>Bugzilla::Bug-&gt;create</kbd> now take
    the <em>names</em> of groups instead of group ids.</li>
  <li>Bugzilla::Bugmail now uses Bugzilla::Bug objects internally instead of
    a lot of direct SQL.</li>
  <li>For sending changes about bugs, there is now a method
    called <kbd>send_changes</kbd> that you can call on Bugzilla::Bug
    objects. For an example of its use, see <kbd>process_bug.cgi</kbd>.</li>
  <li>The <kbd>Bugzilla::Search</kbd> class has been refactored, and should
    now be easier to customize.</li>
  <li>The <kbd>Bugzilla::Util::lsearch</kbd> function is gone. Use
    <kbd>firstidx</kbd> from <kbd>List::MoreUtils</kbd>, instead.</li>
  <li>Bugzilla now includes YUI 2.8.2.</li>
  <li><kbd>long_list.cgi</kbd>, <kbd>showattachment.cgi</kbd> and
    <kbd>xml.cgi</kbd> are deprecated scripts which are no longer actively
    used since Bugzilla 2.19. These scripts will be removed in
    Bugzilla 4.2.</li>
</ul>


<h1 id="v40_previous">Bugzilla 3.6 Release Notes</h1>

<ul class="bz_toc">
  <li><a href="#v36_introduction">Introduction</a></li>
  <li><a href="#v36_point">Updates in this 3.6.x Release</a></li>
  <li><a href="#v36_req">Minimum Requirements</a></li>
  <li><a href="#v36_feat">New Features and Improvements</a></li>
  <li><a href="#v36_issues">Outstanding Issues</a></li>
  <li><a href="#v36_upgrading">Notes On Upgrading From a Previous Version</a></li>
  <li><a href="#v36_code_changes">Code Changes Which May Affect 
    Customizations</a></li>
  <li><a href="#v36_previous">Release Notes for Previous Versions</a></li>
</ul>

<h2 id="v36_introduction">Introduction</h2>

<p>Welcome to Bugzilla 3.6! The focus of the 3.6 release is
  on improving usability and "polishing up" all our features (by adding
  some pieces that were "missing" or always wanted), although we
  also have a few great new features for you, as well!</p>

<p>If you're upgrading, make sure to read <a href="#v36_upgrading">Notes
  On Upgrading From a Previous Version</a>. If you are upgrading from a release
  before 3.4, make sure to read the release notes for all the 
  <a href="#v36_previous">previous versions</a> in between your version
  and this one, <strong>particularly the Upgrading section of each
  version's release notes</strong>.</p>

<p>We would like to thank <a href="http://www.canonical.com/">Canonical
  Ltd.</a>, <a href="http://www.itasoftware.com/">ITA Software</a>,
  the <a href="http://www.ibm.com/linux/ltc/">IBM Linux Technology Center</a>,
  <a href="http://www.redhat.com/">Red Hat</a>, and 
  <a href="http://www.novell.com/">Novell</a> for funding the development
  of various features and improvements in this release of
  Bugzilla.</p>

<h2 id="v36_point">Updates in this 3.6.x Release</h2>

<h3>3.6.2</h3>

<p>This release fixes various security issues. See the
  <a href="https://www.bugzilla.org/security/3.2.7/">Security Advisory</a>
  for details.</p>

<p>In addition, the following important fixes/changes have been made in
  this release:</p>

<ul>
  <li>Bugzilla installations running on older versions of IIS
    will no longer experience the "Undef to trick_taint" errors that would
    sometimes occur.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=521416">Bug 521416</a>)
  </li>
  <li>Email notifications were missing the dates that comments were made.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=578003">Bug 578003</a>)
  </li>
  <li>Putting a phrase in quotes in the Quicksearch box now works properly,
    again.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=578494">Bug 578494</a>
    and <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=553884">Bug 553884</a>)
  </li>
  <li>Quicksearch was usually (incorrectly) being limited to 200 results.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=581622">Bug 581622</a>)
  </li>
  <li>On Windows, <kbd>install-module.pl</kbd> can now properly install
    DateTime and certain other Perl modules that didn't install properly
    before.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=576105">Bug 576105</a>)
  </li>
  <li>Searching "keywords" for "contains none of the words" or "does not
    match regular expression" now works properly.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=562014">Bug 562014</a>)
  </li>
  <li>Doing <kbd>collectstats.pl --regenerate</kbd> now works on installations
    using PostgreSQL.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=577058">Bug 577058</a>)
  </li>
  <li>The "Field Values" administrative control panel was sometimes denying
    admins the ability to delete field values when there was no reason
    to deny the deletion.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=577054">Bug 577054</a>)
  </li>
  <li>Eliminate the "uninitialized value" warnings that would happen when
    editing a product's components.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=576911">Bug 576911</a>)
  </li>
  <li>The updating of bugs_fulltext that happens during 
    <kbd>checksetup.pl</kbd> for upgrades to 3.6 should now be MUCH faster.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=577754">Bug 577754</a>)
  </li>
  <li><kbd>email_in.pl</kbd> was not allowing the setting of time-tracking
    fields via inbound emails.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=583622">Bug 583622</a>)
  </li>
</ul>

<h3>3.6.1</h3>

<p>This release fixes two security issues. See the
  <a href="https://www.bugzilla.org/security/3.2.6/">Security Advisory</a>
  for details.</p>

<p>In addition, the following important fixes/changes have been made in
  this release:</p>

<ul>
  <li>Using the "Change Columns" page would sometimes result in a
    plain-text page instead of HTML.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=376044">Bug 376044</a>)
  </li>
  <li>Extensions that have only templates and no code are now working.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=562551">Bug 562551</a>)
  </li>
  <li><kbd>install-module.pl</kbd> has been fixed so that it installs
    modules properly on both new and old versions of Perl.
     (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=560318">Bug 560318</a>
     and <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=560330">Bug 560330</a>)
  </li>
  <li>It is now possible to upgrade from 3.4 to 3.6 when using Oracle.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=561379">Bug 561379</a>)
  </li>
  <li>Editing a field value's name (using the Field Values admin control
    panel) wasn't working if the value was set as the default for that
    field.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=561296">Bug 561296</a>)
  </li>
  <li>If you had the <kbd>noresolveonopenblockers</kbd> parameter set,
    bugs couldn't be edited at all if they were marked FIXED
    and had any open blockers. (The parameter is only supposed to prevent
    <em>changing</em> bugs to FIXED, not modifying already-FIXED
    bugs.)
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=565314">Bug 565314</a>)
  </li>
  <li>Some minor issues with Perl 5.12 were fixed (mostly warnings that Perl
    5.12 was throwing). Bugzilla now supports Perl 5.12.</li>
</ul>

<h2 id="v36_req">Minimum Requirements</h2>

<p>Any requirements that are new since 3.4.5 will look like
  <span class="req_new">this</span>.</p>

<ul>
  <li><a href="#v36_req_perl">Perl</a></li>
  <li><a href="#v36_req_mysql">For MySQL Users</a></li>
  <li><a href="#v36_req_pg">For PostgreSQL Users</a></li>
  <li><a href="#v36_req_oracle">For Oracle Users</a></li>
  <li><a href="#v36_req_modules">Required Perl Modules</a></li>
  <li><a href="#v36_req_optional_mod">Optional Perl Modules</a></li>
</ul>

<h3 id="v36_req_perl">Perl</h3> 
 
<p>Perl v5.8.1</p>

<h3 id="v36_req_mysql">For MySQL Users</h3> 
 
  <ul> 
    <li>MySQL
       v4.1.2
       </li> 
    <li><strong>perl module:</strong> 
      DBD::mysql v4.00</li> 
  </ul>
  
<h3 id="v36_req_pg">For PostgreSQL Users</h3> 
 
  <ul> 
    <li>PostgreSQL
       v8.00.0000
       </li> 
    <li><strong>perl module:</strong> 
      DBD::Pg v1.45</li> 
  </ul> 
<h3 id="v36_req_oracle">For Oracle Users</h3> 
 
  <ul> 
    <li>Oracle
       v10.02.0
       </li> 
    <li><strong>perl module:</strong> 
      DBD::Oracle v1.19</li> 
  </ul> 
 
<h3 id="v36_req_modules">Required Perl Modules</h3>

<table class="req_table" border="0" cellspacing="0" cellpadding="0"> 
    <tr> 
      <th>Module</th> <th>Version</th> 
    </tr> 
      <tr> 
        <td >CGI</td> 
        <td >3.21
        </td> 
      </tr> 
      <tr> 
        <td >Digest::SHA</td> 
        <td > 
            (Any)
        </td> 
      </tr> 
      <tr> 
        <td >Date::Format</td> 
        <td >2.21
        </td> 
      </tr> 
      <tr> 
        <td >DateTime</td> 
        <td >0.28
        </td> 
      </tr> 
      <tr> 
        <td >DateTime::TimeZone</td> 
        <td >0.71
        </td> 
      </tr> 
      <tr> 
        <td >DBI</td> 
        <td >1.41
        </td> 
      </tr> 
      <tr> 
        <td >Template</td> 
        <td >2.22
        </td> 
      </tr> 
      <tr> 
        <td >Email::Send</td> 
        <td >2.00
        </td> 
      </tr> 
      <tr> 
        <td >Email::MIME</td> 
        <td >1.861
        </td> 
      </tr> 
      <tr> 
        <td >Email::MIME::Encodings</td> 
        <td >1.313
        </td> 
      </tr> 
      <tr> 
        <td >Email::MIME::Modifier</td> 
        <td >1.442
        </td> 
      </tr> 
      <tr> 
        <td >URI</td> 
        <td > 
            (Any)
        </td> 
      </tr> 
</table> 
 
<h3 id="v36_req_optional_mod">Optional Perl Modules</h3> 
 
<p>The following perl modules, if installed, enable various
  features of Bugzilla:</p>

<table class="req_table" border="0" cellspacing="0" cellpadding="0"> 
    <tr> 
      <th>Module</th> <th>Version</th> 
        <th>Enables Feature</th> 
    </tr> 
      <tr> 
        <td >GD</td> 
        <td >1.20
        </td> 
          <td>Graphical Reports, New Charts, Old Charts</td> 
      </tr> 
      <tr> 
        <td >Chart::Lines</td> 
        <td  class="req_new">2.1
        </td> 
          <td>New Charts, Old Charts</td> 
      </tr> 
      <tr> 
        <td >Template::Plugin::GD::Image</td> 
        <td > 
            (Any)
        </td> 
          <td>Graphical Reports</td> 
      </tr> 
      <tr> 
        <td >GD::Text</td> 
        <td > 
            (Any)
        </td> 
          <td>Graphical Reports</td> 
      </tr> 
      <tr> 
        <td >GD::Graph</td> 
        <td > 
            (Any)
        </td> 
          <td>Graphical Reports</td> 
      </tr> 
      <tr> 
        <td >XML::Twig</td> 
        <td > 
            (Any)
        </td> 
          <td>Move Bugs Between Installations,
          Automatic Update Notifications</td> 
      </tr> 
      <tr> 
        <td >MIME::Parser</td> 
        <td >5.406
        </td> 
          <td>Move Bugs Between Installations</td> 
      </tr> 
      <tr> 
        <td >LWP::UserAgent</td> 
        <td > 
            (Any)
        </td> 
          <td>Automatic Update Notifications</td> 
      </tr> 
      <tr> 
        <td >PatchReader</td> 
        <td >0.9.4
        </td> 
          <td>Patch Viewer</td> 
      </tr> 
      <tr> 
        <td >Net::LDAP</td> 
        <td > 
            (Any)
        </td> 
          <td>LDAP Authentication</td> 
      </tr> 
      <tr> 
        <td >Authen::SASL</td> 
        <td > 
            (Any)
        </td> 
          <td>SMTP Authentication</td> 
      </tr> 
      <tr> 
        <td >Authen::Radius</td> 
        <td > 
            (Any)
        </td> 
          <td>RADIUS Authentication</td> 
      </tr> 
      <tr> 
        <td >SOAP::Lite</td> 
        <td >0.710.06
        </td> 
          <td>XML-RPC Interface</td> 
      </tr> 
      <tr> 
        <td  class="req_new">JSON::RPC</td> 
        <td  class="req_new"> 
            (Any)
        </td> 
          <td>JSON-RPC Interface</td> 
      </tr> 
      <tr> 
        <td  class="req_new">Test::Taint</td> 
        <td  class="req_new"> 
            (Any)
        </td> 
          <td>JSON-RPC Interface, XML-RPC Interface</td> 
      </tr> 
      <tr> 
        <td >HTML::Parser</td> 
        <td >3.40
        </td> 
          <td>More HTML in Product/Group Descriptions</td> 
      </tr> 
      <tr> 
        <td >HTML::Scrubber</td> 
        <td > 
            (Any)
        </td> 
          <td>More HTML in Product/Group Descriptions</td> 
      </tr> 
      <tr> 
        <td >Email::MIME::Attachment::Stripper</td> 
        <td > 
            (Any)
        </td> 
          <td>Inbound Email</td> 
      </tr> 
      <tr> 
        <td >Email::Reply</td> 
        <td > 
            (Any)
        </td> 
          <td>Inbound Email</td> 
      </tr> 
      <tr> 
        <td >TheSchwartz</td> 
        <td > 
            (Any)
        </td> 
          <td>Mail Queueing</td> 
      </tr> 
      <tr> 
        <td >Daemon::Generic</td> 
        <td > 
            (Any)
        </td> 
          <td>Mail Queueing</td> 
      </tr> 
      <tr> 
        <td >mod_perl2</td> 
        <td >1.999022
        </td> 
          <td>mod_perl</td> 
      </tr> 
</table> 

<h2 id="v36_feat">New Features and Improvements</h2>

<ul>
  <li><a href="#v36_feat_usability">General Usability Improvements</a></li>
  <li><a href="#v36_feat_extensions">New Extensions System</a></li>  
  <li><a href="#v36_feat_qs">Improved Quicksearch</a></li>
  <li><a href="#v36_feat_browse">Simple "Browse" Interface</a></li>
  <li><a href="#v36_feat_suexec">SUExec Support</a></li>
  <li><a href="#v36_feat_mpwindows">Experimental mod_perl Support on Windows</a></li>
  <li><a href="#v36_email_attachments">Send Attachments by Email</a></li>
  <li><a href="#v36_feat_jsonrpc">JSON-RPC Interface</a></li>
  <li><a href="#v36_feat_migrate">Migration From Other Bug-Trackers</a></li>
  <li><a href="#v36_feat_other">Other Enhancements and Changes</a></li>
</ul>

<h3 id="v36_feat_usability">General Usability Improvements</h3>

<p>A <a href="https://wiki.mozilla.org/Bugzilla:CMU_HCI_Research_2008">scientific
  usability study</a> was done on Bugzilla by researchers
  from Carnegie-Mellon University. As a result of this study,
  <a href="https://bugzilla.mozilla.org/showdependencytree.cgi?id=490786&amp;hide_resolved=0">several
  usability issues</a> were prioritized to be fixed, based on specific data
  from the study.</p>

<p>As a result, you will see many small improvements in Bugzilla's
  usability, such as using Javascript to validate certain forms before
  they are submitted, standardizing the words that we use in the user interface,
  being clearer about what Bugzilla needs from the user,
  and other changes, all of which are also listed individually in this New
  Features section.</p>

<p>Work continues on improving usability for the next release of
  Bugzilla, but the results of the research have already
  had an impact on this 3.6 release.</p>

<h3 id="v36_feat_extensions">New Extensions System</h3>

<p>Bugzilla has a brand-new Extensions system. The system is
  consistent, fast, and
  <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/Extension.html">fully
  documented</a>. It makes it possible to easily extend Bugzilla's
  code and user interface to add new features or change existing features.
  There's even
  <a href="https://www.bugzilla.org/docs/4.0/en/html/api/extensions/create.html">a
  script</a> that will create the basic layout of an extension for you, to
  help you get started. For more information about the new system, see the
  <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/Extension.html">Extensions
  documentation</a>.</p>

<p>If you had written any extensions using Bugzilla's previous
  extensions system, there is
  <a href="https://www.bugzilla.org/docs/4.0/en/html/api/contrib/extension-convert.html">a
  script to help convert old extensions into the new format</a>.</p>

<h3 id="v36_feat_qs">Improved Quicksearch</h3>

<p>The "quicksearch" box that appears on the front page of
  Bugzilla and in the header/footer of every page
  is now simplified and made more powerful. There is a
  <kbd>[?]</kbd> link next to the box that will take you to
  the simplified <a href="https://landfill.bugzilla.org/bugzilla-4.0-branch/page.cgi?id=quicksearch.html">Quicksearch Help</a>,
  which describes every single feature of the system in a simple layout,
  including new features such as the ability to use partial field names
  when searching.</p>

<p>Quicksearch should also be much faster than it was before, particularly
  on large installations.</p>

<p>Note that in order to implement the new quicksearch, certain old
  and rarely-used features had to be removed:

<ul>
  <li><b>+</b> as a prefix to mean "search additional resolutions", and
    <b>+</b> as a prefix to mean "search just the summary". You can
    instead use <kbd>summary:</kbd> to explicitly search summaries.</li>
  <li>Searching the Severity field if you type something that matches
    the first few characters of a severity. You can explicitly search
    the Severity field if you want to find bugs by severity.</li>
  <li>Searching the Priority field if you typed something that exactly
    matched the name of a priority. You can explicitly search the
    Priority field if you want to find bugs by priority.</li>
  <li>Searching the Platform and OS fields if you typed in one of a
    certain hard-coded list of strings (like "pc", "windows", etc.).
    You can explicitly search these fields, instead, if you want to
    find bugs with a specific Platform or OS set.</li>
</ul>

<h3 id="v36_feat_browse">Simple "Browse" Interface</h3>

<p>There is now a "Browse" link in the header of each Bugzilla
  page that presents a very basic interface that allows users to simply
  browse through all open bugs in particular components.</p>

<h3 id="v36_feat_suexec">SUExec Support</h3>

<p>Bugzilla can now be run in Apache's "SUExec" mode,
  which is what control panel software like cPanel and Plesk use
  (so Bugzilla should now be much easier to install
  on shared hosting). SUExec support shows up as an option
  in the <kbd>localconfig</kbd> file during installation.</p>

<h3 id="v36_feat_mpwindows">Experimental mod_perl Support on Windows</h3>

<p>There is now experimental support for running Bugzilla
  under mod_perl on Windows, for a significant performance enhancement
  (in exchange for using more memory).</p>

<h3 id="v36_email_attachments">Send Attachments by Email</h3>

<p>The <a href="https://www.bugzilla.org/docs/4.0/en/html/api/email_in.html">email_in</a>
  script now supports attaching multiple attachments to a bug
  by email, both when filing and when updating a bug.</p>

<h3 id="v36_feat_jsonrpc">JSON-RPC Interface</h3>

<p>Bugzilla now has support for the
  <a href="http://json-rpc.org/">JSON-RPC</a> WebServices protocol via
  <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService/Server/JSONRPC.html">jsonrpc.cgi</a>.
  The JSON-RPC interface is experimental in this release--if you want any
  fundamental changes in how it works,
  <a href="https://www.bugzilla.org/contributing/reporting_bugs">let us
  know</a>, for the next release of Bugzilla.</p>

<h3 id="v36_feat_migrate">Migration From Other Bug-Trackers</h3>

<p>Bugzilla 3.6 comes with a new script,
  <a href="https://www.bugzilla.org/docs/4.0/en/html/api/migrate.html">migrate.pl</a>,
  which allows migration from other bug-tracking systems.
  Among the various features of the migration system are:</p>

<ul>
  <li>It is non-destructive--you can migrate into an existing
    Bugzilla installation without destroying any data
    in the installation.</li>
  <li>It has a "dry-run" mode so you can test your migration
    before actually running it.</li>
  <li>It is relatively easy to write new migrators for new systems,
    if you know Perl. The basic migration framework does most of the work
    for you, you just have to provide it with the data from your
    bug-tracker. See the
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/Migrate.html">Bugzilla::Migrate</a>
    documentation and see our current migrator,
    <kbd>Bugzilla/Migrate/GNATS.pm</kbd> for information on how to make your
    own migrator.</li>
</ul>

<p>The first migrator that has been implemented is for the GNATS
  bug-tracking system. We'd love to see migrators for
  other systems! If you want to contribute a new migrator, see our
  <a href="https://wiki.mozilla.org/Bugzilla:Developers">development
  process</a> for details on how to get code into Bugzilla.</p>

<p>Thanks to <a href="http://lambdares.com/">Lambda Research</a> for
  funding the initial development of this feature.</p>

<h3 id="v36_feat_other">Other Enhancements and Changes</h3>

<h4>Enhancements for Users</h4>

<ul>
  <li><b>Bug Filing:</b> When filing a bug,
    Bugzilla now visually indicates which fields are
    mandatory.</li>
  <li><b>Bug Filing:</b> "Bookmarkable templates" now
    support the "alias" and "estimated hours" fields.</li>
  
  <li><b>Bug Editing:</b> In previous versions of
    Bugzilla, if you added a private comment to a bug,
    then <em>none</em> of the changes that you made at that time were
    sent to users who couldn't see the private comment. Now, for users
    who can't see private comments, public changes are sent, but the private
    comment is excluded from their email notification.</li>
  <li><b>Bug Editing:</b> The controls for groups now
    appear to the right of the attachment and time-tracking tables,
    when editing a bug.</li>
  <li><b>Bug Editing:</b> The "Collapse All Comments"
    and "Expand All Comments" links now appear to the right of the
    comment list instead of above it.</li>
  <li><b>Bug Editing:</b> The See Also field now supports
    URLs for Google Code Issues and the Debian Bug-Tracking System.</li>
  <li><b>Bug Editing:</b> There have been significant performance
    improvements in <kbd>show_bug.cgi</kbd> (the script that displays thebug-editing form), particularly for bugs that
    have lots of comments or attachments.</li>

  <li><b>Attachments:</b> The "Details" page of an attachment
    now displays itself as uneditable if you can't edit the fields
    there.</li>
  <li><b>Attachments:</b> We now make sure that there is
    a Description specified for an attachment, using JavaScript, before
    the form is submitted.</li>
  <li><b>Attachments:</b> There is now a link back to the bug
    at the bottom of the "Details" page for an attachment.</li>
  <li><b>Attachments:</b> When you click on an "attachment 12345" link
    in a comment, if the attachment is a patch, you will now see the
    formatted "Diff" view instead of the raw patch.</li>
  <li><b>Attachments</b>: For text attachments, we now let the browser 
    auto-detect the character encoding, instead of forcing the browser to
    always assume the attachment is in UTF-8.</li>
  
  <li><b>Search:</b> You can now display bug flags as a column
    in search results.</li>
  <li><b>Search:</b> When viewing search results, you can see which columns are
    being sorted on, and which direction the sort is on, as indicated
    by arrows next to the column headers.</li>
  <li><b>Search:</b> You can now search the Deadline field using relative
    dates (like "1d", "2w", etc.).</li>
  <li><b>Search:</b> The iCalendar format of search results now includes
    a PRIORITY field.</li>
  <li><b>Search:</b> It is no longer an error to enter an invalid search
    order in a search URL--Bugzilla will simply warn you that
    some of your order options are invalid.</li>
  <li><b>Search:</b> When there are no search results, some helpful
    links are displayed, offering actions you might want to take.</li>
  <li><b>Search:</b> For those who like to make their own
    <kbd>buglist.cgi</kbd> URLs (and for people working on customizations),
    <kbd>buglist.cgi</kbd> now accepts nearly every valid field in
    Bugzilla as a direct URL parameter, like
    <kbd>&amp;field=value</kbd>.</li>
  
  <li><b>Requests:</b> When viewing the "My Requests" page, you can now
    see the lists as a normal search result by clicking a link at the
    bottom of each table.</li>
  <li><b>Requests:</b> When viewing the "My Requests" page, if you are
    using Classifications, the Product drop-down will be grouped by
    Classification.</li>

  <li><b>Inbound Email:</b> When filing a bug by email, if the
    product that you are filing the bug into has some groups
    set as Default for you, the bug will now be placed into those
    groups automatically.</li>
  <li><b>Inbound Email:</b> The field names that can be used when creating
    bugs by email now exactly matches the set of valid parameters
    to the
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService/Bug.html#create">Bug.create
    WebService function</a>. You can still use most of the old field names
    that 3.4 and earlier used for inbound emails, though, for
    backwards-compatibility.</li>

  <li>If there are multiple languages available for your
    Bugzilla, you can now select what language you want
    Bugzilla displayed in using links at the top of every
    page.</li>
  <li>When creating a new account, you will be automatically logged in
    after setting your password.</li>
  <li>There is no longer a maximum password length for accounts.</li>
  <li>In the Dusk skin, it's now easier to see links.</li>
  <li>In the Whining system, you can now choose to receive emails even
    if there are no bugs that match your searches.</li>
  <li>The arrows in dependency graphs now point the other way, so that
    bugs point at their dependencies.</li>
  
  <li><b>New Charts:</b> You can now convert an existing Saved Search
    into a data series for New Charts.</li>
  <li><b>New Charts:</b> There is now an interface that allows you to
    delete data series.</li>
  <li><b>New Charts:</b> When deleting a product, you now have the option
    to delete the data series that are associated with that product.</li>
</ul>

<h4>Enhancements for Administrators and Developers</h4>

<ul>
  <li>Depending on how your workflow is set up, it is now possible to
    have both UNCONFIRMED and REOPENED show up as status choices for
    a closed bug. If you only want one or the other to
    show up, you should edit your status workflow appropriately
    (possibly by removing or disabling the REOPENED status).</li>
  <li>You can now "disable" field values so that they don't show
    up as choices on a bug unless they are already set as
    the value for that bug. This doesn't work for the
    per-product field values (component, target_milestone, and version)
    yet, though.</li>
  <li>Users are now locked out of their accounts for 30 minutes after
    trying five bad passwords in a row during login. Every time a
    user is locked out like this, the user in the "maintainer" parameter
    will get an email.</li>
  <li>The minimum length allowed for a password is now 6 characters.</li>
  <li>The <kbd>UNCONFIRMED</kbd> status being enabled in a product
    is now unrelated to the voting parameters. Instead, there is a checkbox
    to enable the <kbd>UNCONFIRMED</kbd> status in a product.</li>
  <li>Information about duplicates is now stored in the database instead
    of being stored in the <kbd>data/</kbd> directory. On large installations
    this could save several hundred megabytes of disk space.</li>

  <li><b>Installation:</b> When installing Bugzilla, the
    "maintainer" parameter will be automatically set to the administrator
    that was created by <kbd>checksetup.pl</kbd>.</li>
  <li><b>Installation:</b> <kbd>checksetup.pl</kbd> now prints out
    certain errors in a special color so that you know that something
    needs to be done.</li>
  <li><b>Installation:</b> <kbd>checksetup.pl</kbd> is now <em>much</em>
    faster at upgrading installations, particularly older installations.
    Also, it's been made faster to run for the case where it's not
    doing an upgrade.</li>
  <li><b>Installation:</b> If you install Bugzilla using the
    tarball, the <kbd>CGI.pm</kbd> module from CPAN is now included in
    the <kbd>lib/</kbd> dir. If you would rather use the CGI.pm from your
    global Perl installation, you can delete <kbd>CGI.pm</kbd> and the
    <kbd>CGI</kbd> directory from the <kbd>lib/</kbd> directory.</li>
  
  <li>When editing a group, you can now specify that members of a group
    are allowed to grant others membership in that group itself.</li>
  <li>The ability to compress BMP attachments to PNGs is now an Extension.
    To enable the feature, remove the file
    <kbd>extensions/BmpConvert/disabled</kbd> and then run <kbd>checksetup.pl</kbd>.</li>
  <li>The default list of values for the Priority field are now clear English
    words instead of P1, P2, etc.</li>
  <li>There is now a system in place so that all field values can be
    localized. See the <kbd>value_descs</kbd> variable in
    <kbd>template/en/default/global/field-descs.none.tmpl</kbd>.</li>
  <li><kbd>config.cgi</kbd> now returns an ETag header and understands
    the If-None-Match header in HTTP requests.</li>
  <li>The XML format of <kbd>show_bug.cgi</kbd> now returns more information:
    the numeric id of each comment, whether an attachment is a URL,
    the modification time of an attachment, the numeric id of a flag,
    and the numeric id of a flag's type.</li>
  
  <li><b>Parameters:</b> Parameters that aren't actually required are no longer
    in the "Required" section of the Parameters page. Instead, some are in the
    new "General" section, and some are in the new "Advanced" section.</li>
  <li><b>Parameters:</b> The old <kbd>ssl</kbd> parameter has been
    changed to <kbd>ssl_redirect</kbd>, and can only be turned "on" or "off".
    If "on", then all users will be forcibly redirected to SSL whenever
    they access Bugzilla. When the parameter is off,
    no SSL-related redirects will occur (even if the user directly
    accesses Bugzilla via SSL, they will <em>not</em> be
    redirected to a non-SSL page).</li>
  <li><b>Parameters:</b> In the Advanced parameters, there is a new parameter,
    <kbd>inbound_proxies</kbd>. If your Bugzilla is behind a
    proxy, you should set this parameter to the IP address of that proxy.
    Then, Bugzilla will "believe" any "X-Forwarded-For"
    header sent from that proxy, and correctly use the X-Forwarded-For
    as the end user's IP, instead of believing that all traffic is coming
    from the proxy.</li>
    
  <li><b>Removed Parameter:</b> The <kbd>loginnetmask</kbd> parameter has
    been removed. Since Bugzilla sends secure cookies, it's no
    longer necessary to always restrict logins to a specific IP or block
    of addresses.</li>
  <li><b>Removed Parameter:</b> The <kbd>quicksearch_comment_cutoff</kbd>
    parameter is gone. Quicksearch now always searches comments; however, it
    uses a much faster algorithm to do it.</li>
  <li><b>Removed Parameter:</b> The <kbd>usermatchmode</kbd> parameter has
    been removed. User-matching is now <em>always</em> done.</li>
  <li><b>Removed Parameter:</b> The <kbd>useentrygroupdefault</kbd> parameter
    has been removed. Bugzilla now always behaves as though
    that parameter were off.</li>
  <li>The <kbd>t/001compile.t</kbd> test should now always pass, no matter
    what configuration of optional modules you do or don't have installed.</li>
  <li>New script: <kbd>contrib/console.pl</kbd>, which allows you to have
    a "command line" into Bugzilla by inputting Perl code
    or using a few custom commands.</li>
</ul>

<h4>WebService Changes</h4>

<ul>
  <li>The WebService now returns all dates and times in the UTC timezone.
    <kbd>Bugzilla.time</kbd> now acts as though the Bugzilla
    server were in the UTC timezone, always. If you want to write clients
    that are compatible across all Bugzilla versions,
    check the timezone from <kbd>Bugzilla.timezone</kbd> or
    <kbd>Bugzilla.time</kbd>, and always input times in that timezone
    and expect times to be returned in that format.</li>
  <li>You can now log in by passing <kbd>Bugzilla_login</kbd> and
    <kbd>Bugzilla_password</kbd> as arguments to any WebService function.
    See the
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService.html#LOGGING_IN">Bugzilla::WebService</a>
    documentation for details.</li>
  <li>New Method:
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService/Bug.html#attachments">Bug.attachments</a>
    which allows getting information about attachments.</li>
  <li>New Method:
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService/Bug.html#fields">Bug.fields</a>,
    which gets information about all the fields that a bug can have
    in Bugzilla, include custom fields and legal values for
    all fields. The <kbd>Bug.legal_values</kbd> method is now deprecated.</li>
  <li>In the <kbd>Bug.add_comment</kbd> method, the "private" parameter
    has been renamed to "is_private" (for consistency with other methods).
    You can still use "private", though, for backwards-compatibility.</li>
  <li>The WebService now has Perl's "taint mode" turned on. This means that
    it validates all data passed in before sending it to the database.
    Also, all parameter names are validated, and if you pass in a parameter
    whose name contains anything other than letters, numbers, or underscores,
    that parameter will be ignored. Mostly this just affects
    customizers--Bugzilla's WebService is not functionally
    affected by these changes.</li>
  <li>In previous versions of Bugzilla, error messages were
    sent word-wrapped to the client, from the WebService. Error messages
    are now sent as one unbroken line.</li>
</ul>

<h2 id="v36_issues">Outstanding Issues</h2>

<ul>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=423439">Bug 423439</a>: Tabs in comments will be converted
    to four spaces, due to a b<!-- -->ug in Perl as of Perl 5.8.8.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=69621">Bug 69621</a>: If you rename or remove a keyword that is
    in use on bugs, you will need to rebuild the "keyword cache"
    by running <a href="sanitycheck.cgi">sanitycheck.cgi</a> and choosing 
    the option to rebuild the cache when it asks. Otherwise keywords may 
    not show up properly in search results.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=89822">Bug 89822</a>: When changing multiple bugs at 
    the same time, there is no "mid-air collision" protection.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=276230">Bug 276230</a>: The support for restricting access to 
    particular Categories of New Charts is not complete. You should treat 
    the 'chartgroup' Param as the only access mechanism available.<br>
    However, charts migrated from Old Charts will be restricted to 
    the groups that are marked MANDATORY for the corresponding Product.
    There is currently no way to change this restriction, and the 
    groupings will not be updated if the group configuration
    for the Product changes.</li>
</ul>

<h2 id="v36_upgrading">Notes On Upgrading From a Previous Version</h2>

<p>When upgrading to 3.6, <kbd>checksetup.pl</kbd> will create foreign keys
  for many columns in the database. Before doing this, it will check the
  database for consistency. If there are an unresolvable consistency
  problems, it will tell you what table and column in the database contain
  the bad values, and which values are bad. If you don't know what else to do,
  you can always delete the database records which contain the bad values by
  logging in to your database and running the following command:</p>

<p><code>DELETE FROM <var>table</var> WHERE <var>column</var> IN 
  (<var>1, 2, 3, 4</var>)</code></p>

<p>Just replace "table" and "column" with the name of the table 
  and column that <kbd>checksetup.pl</kbd> mentions, and "1, 2, 3, 4"
  with the invalid values that <kbd>checksetup.pl</kbd> prints out.</p>

<p>Remember that you should always back up your database before doing
  an upgrade.</p>

<h2 id="v36_code_changes">Code Changes Which May Affect Customizations</h2>

<ul>
  <li>There is no longer a SendBugMail method in the templates, and bugmail
    is no longer sent by processing a template. Instead, it is sent
    by using <kbd>Bugzilla::BugMail::Send</kbd>.</li>
  <li>Comments are now represented as a
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/Comment.html">Bugzilla::Comment</a>
    object instead of just being hashes.</li>
  <li>In previous versions of Bugzilla, the template for displaying
    a bug required a lot of extra variables that are now global
    template variables instead.</li>
  <li>You can now check if optional modules are installed by using
    <kbd>Bugzilla-&gt;feature</kbd> in Perl code or
    <kbd>feature_enabled</kbd> in template code.</li>
  <li>All of the various template header information required to display
    the bug form is now in one template,
    <kbd>template/en/default/bug/show-header.html.tmpl</kbd>.</li>
  <li>You should now use <kbd>display_value</kbd> instead of
    <kbd>get_status</kbd> or <kbd>get_resolution</kbd> in templates.
    <kbd>display_value</kbd> should be used anywhere that a
    &lt;select&gt;-type field has its values displayed.</li>
</ul>


<h1 id="v36_previous">Bugzilla 3.4 Release Notes</h1>

<ul class="bz_toc">
  <li><a href="#v34_introduction">Introduction</a></li>
  <li><a href="#v34_point">Updates in this 3.4.x Release</a></li>
  <li><a href="#v34_req">Minimum Requirements</a></li>
  <li><a href="#v34_feat">New Features and Improvements</a></li>
  <li><a href="#v34_issues">Outstanding Issues</a></li>
  <li><a href="#v34_upgrading">Notes On Upgrading From a Previous Version</a></li>
  <li><a href="#v34_code_changes">Code Changes Which May Affect 
    Customizations</a></li>
  <li><a href="#v34_previous">Release Notes for Previous Versions</a></li>
</ul>

<h2 id="v34_introduction">Introduction</h2>

<p>This is Bugzilla 3.4! Bugzilla 3.4 brings a lot
  of great enhancements for Bugzilla over previous versions,
  with various improvements to the user interface, lots of interesting new
  features, and many long-standing requests finally being addressed.</p>

<p>If you're upgrading, make sure to read <a href="#v34_upgrading">Notes
  On Upgrading From a Previous Version</a>. If you are upgrading from a release
  before 3.2, make sure to read the release notes for all the 
  <a href="#v34_previous">previous versions</a> in between your version
  and this one, <strong>particularly the Upgrading section of each
  version's release notes</strong>.</p>

<p>We would like to thank <a href="http://www.canonical.com/">Canonical
  Ltd.</a> for funding development of one new feature, and NASA for funding
  development of several new features through the
  <a href="http://www.sjsufoundation.org/">San Jose State University
  Foundation</a>.</p>

<h2 id="v34_point">Updates In This 3.4.x Release</h2>

<h3>3.4.6</h3>

<ul>
  <li>When doing a search that involves "not equals" or "does not contain the
    string" or similar "negative" search types, the search description that
    appears at the top of the resulting bug list will indicate
    that the search was of that type.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=474738">Bug 474738</a>)
  </li>
  <li>In Internet Explorer, users couldn't easily mark a RESOLVED DUPLICATE
    bug as REOPENED, due to a JavaScript error.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=546719">Bug 546719</a>)
  </li>
  <li>If you use a "bookmarkable template" to pre-fill forms on
    the bug-filing page, and you have custom fields
    that are only supposed to appear (or only supposed to have certain
    values) based on the values of other fields, those custom fields will
    now work properly.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=538211">Bug 538211</a>)
  </li>
  <li>If you have a custom field that's only supposed to appear when
    a bug's resolution is FIXED, it will now behave properly
    on the bug-editing form when a user sets the bug's
    status to RESOLVED.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=520993">Bug 520993</a>)
  </li>
  <li>If you are logged-out and using <kbd>request.cgi</kbd>, the Requester
    and Requestee fields no longer respect the <kbd>usermatching</kbd>
    parameter--they always require full usernames.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=533018">Bug 533018</a>)
  </li>
  <li>If you tried to do a search with too many terms (resulting in a URL
    that was longer than about 7000 characters), Apache would return a 
    500 error instead of your search results.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=513989">Bug 513989</a>)
  </li>
  <li>Bugzilla would sometimes lose fields from your sort order
    when you added new fields to your sort order.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=470214">Bug 470214</a>)
  </li>
  <li>The Atom format of search results would sometimes be missing the
    Reporter or Assignee field for some bugs.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=537834">Bug 537834</a>)
  </li>
</ul>

<h3>3.4.5</h3>

<p>This release contains fixes for multiple security issues. See the
  <a href="https://www.bugzilla.org/security/3.0.10/">Security Advisory</a>
  for details.</p>

<p>In addition, the following important fixes/changes have been made in
  this release:</p>

<ul>
  <li>Whining was failing if jobqueue.pl was enabled.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=530270">Bug 530270</a>)
  </li>
  <li>The Assignee field was empty in Whine mails.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=511216">Bug 511216</a>)
  </li>
  <li>Administrators can now successfully create user accounts using 
    editusers.cgi when using the "Env" authentication method.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=483987">Bug 483987</a>)
  </li>
  <li>Bugmail now uses the timezone of the recipient of the email,
    when displaying the time a comment was made, instead of the timezone of the
    person who made the change.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=534587">Bug 534587</a>)
  </li>
  <li>"bug 1234" in comments sometimes would not become a link if
    word-wrapping happened between "bug" and the number.
   (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=514703">Bug 514703</a>)
  </li>
  <li>Running <kbd>checksetup.pl</kbd> on Windows will no longer pop up an error box
    about OCI.dll.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=480968">Bug 480968</a>)
  </li>
</ul>

<h3>3.4.4</h3>

<p>This release contains a fix for a security issue. See the
  <a href="https://www.bugzilla.org/security/3.4.3/">Security Advisory</a>
  for details.</p>

<p>Additionally, this release fixes a few minor bugs.</p>

<h3>3.4.3</h3>

<ul>
  <li>Bugzilla installations running under mod_perl were leaking
    about 512K of RAM per page load.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=517793">Bug 517793</a>)
  </li>
  <li>Attachments with Unicode characters in their names were being downloaded
    with mangled names. 
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=328628">Bug 328628</a>)
  </li>
  <li>Creating custom fields with Unicode in their database column name
    is now no longer allowed, as it would break Bugzilla. If you
    created such a custom field, you should delete it by first marking it 
    obsolete and then clicking "Delete" in the custom field list, using
    <a href="editfields.cgi">editfields.cgi</a>.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=525025">Bug 525025</a>)
  </li>
  <li>Clicking "submit only my comment" on the "mid-air collisions" page
    was leading to a "Suspicious Action" warning.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=514378">Bug 514378</a>)
  </li>
  <li>The XML format of a bug accidentally contained the
    word-wrapped content of comments instead of the unwrapped content.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=509152">Bug 509152</a>)
  </li>
  <li>You can now do <kbd>./install-module.pl --shell</kbd> to get a CPAN
    shell using the configuration of 
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/install-module.html">install-module.pl</a>,
    which allows you to do more advanced Perl module installation tasks.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=445875">Bug 445875</a>)
  </li>
</ul>

<h3>3.4.2</h3>

<p>This release contains fixes for multiple security issues, one of which
  is highly critical. See the 
  <a href="https://www.bugzilla.org/security/3.0.8/">Security Advisory</a>
  for details.</p>

<p>In addition, the following important fixes/changes have been made in
  this release:</p>

<ul>
  <li>Upgrades from older releases were sometimes failing during UTF-8 
    conversion with a foreign key error. 
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=508181">Bug 508181</a>)
  </li>
  <li>Sorting bug lists on certain fields would result in an error.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=510944">Bug 510944</a>)
  </li>
  <li>Bug update emails had two or three blank lines at the top
    and between the various sections of the email. There is now only one
    blank line in each of those places, making these emails more compact.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=73330">Bug 73330</a>)
  </li>
  <li>Bug email notifications for new bugs incorrectly
    had a line saying that the description was "Comment 0".
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=510798">Bug 510798</a>)
  </li>
  <li>Running <kbd>./collectstats.pl --regenerate</kbd> is now much faster,
    on the order of 20x or 100x faster.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=286625">Bug 286625</a>)
  </li>
  <li>For users of RHEL, CentOS, Fedora, etc. jobqueue.pl can now automatically
    be installed as a daemon by running <kbd>./jobqueue.pl install</kbd>
    as root. 
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=475403">Bug 475403</a>)
  </li>
  <li>XML-RPC interface responses had an incorrect Content-Length header
    and would sometimes be truncated, if they contained certain UTF-8
    characters.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=486306">Bug 486306</a>)
  </li>
  <li>Users who didn't have access to the time-tracking fields would get an
    empty bug update email when the time-tracking fields were
    changed.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=509035">Bug 509035</a>)
  </li>
  <li>In the New Charts, non-public series now no longer show up as selectable
    if you cannot access them.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=389396">Bug 389396</a>)
  </li>
</ul>

<h3>3.4.1</h3>

<p>This release contains an important security fix. See the
  <a href="https://www.bugzilla.org/security/3.4/">Security Advisory</a>
  for details.</p>

<h2 id="v34_req">Minimum Requirements</h2>

<p>Any requirements that are new since 3.2.3 will look like
  <span class="req_new">this</span>.</p>

<ul>
  <li><a href="#v34_req_perl">Perl</a></li>
  <li><a href="#v34_req_mysql">For MySQL Users</a></li>
  <li><a href="#v34_req_pg">For PostgreSQL Users</a></li>
  <li><a href="#v34_req_oracle">For Oracle Users</a></li>
  <li><a href="#v34_req_modules">Required Perl Modules</a></li>
  <li><a href="#v34_req_optional_mod">Optional Perl Modules</a></li>
</ul>

<h3 id="v34_req_perl">Perl</h3>

<p>Perl v5.8.1</p>

<h3 id="v34_req_mysql">For MySQL Users</h3> 
 
<ul> 
  <li>MySQL v4.1.2</li> 
  <li><strong>perl module:</strong> DBD::mysql v4.00</li> 
</ul>

<h3 id="v34_req_pg">For PostgreSQL Users</h3> 
 
<ul> 
  <li>PostgreSQL v8.00.0000</li>
  <li><strong>perl module:</strong> DBD::Pg v1.45</li>
</ul>

<h3 id="v34_req_oracle">For Oracle Users</h3>
 
<ul> 
  <li>Oracle v10.02.0</li>
  <li><strong>perl module:</strong> DBD::Oracle v1.19</li>
</ul> 
 
<h3 id="v34_req_modules">Required Perl Modules</h3>

<table class="req_table" border="0" cellspacing="0" cellpadding="0"> 
  <tr> 
    <th>Module</th> <th>Version</th> 
  </tr> 
  <tr> 
    <td>CGI</td> 
    <td>3.21</td> 
  </tr> 
  <tr> 
    <td class="req_new">Digest::SHA</td> 
    <td class="req_new"> (Any)</td> 
  </tr> 
  <tr> 
    <td>Date::Format</td> 
    <td>2.21</td> 
  </tr> 
  <tr> 
    <td class="req_new">DateTime</td> 
    <td class="req_new">0.28</td> 
  </tr> 
  <tr> 
    <td class="req_new">DateTime::TimeZone</td> 
    <td class="req_new">0.71</td> 
  </tr> 
  <tr> 
    <td>DBI</td> 
    <td>1.41</td> 
  </tr> 
  <tr> 
    <td>Template</td> 
    <td class="req_new">2.22</td> 
  </tr>
  <tr>
    <td>Email::Send</td> 
    <td>2.00</td> 
  </tr> 
  <tr> 
    <td>Email::MIME</td> 
    <td>1.861</td> 
  </tr> 
  <tr> 
    <td>Email::MIME::Encodings</td> 
    <td>1.313</td> 
  </tr> 
  <tr> 
    <td>Email::MIME::Modifier</td> 
    <td>1.442</td> 
  </tr> 
  <tr> 
    <td class="req_new">URI</td> 
    <td class="req_new">(Any)</td> 
  </tr> 
</table> 
 
<h3 id="v34_req_optional_mod">Optional Perl Modules</h3> 
 
<p>The following perl modules, if installed, enable various
  features of Bugzilla:</p>

<table class="req_table" border="0" cellspacing="0" cellpadding="0"> 
  <tr> 
    <th>Module</th>
    <th>Version</th> 
    <th>Enables Feature</th> 
  </tr> 
  <tr> 
    <td>LWP::UserAgent</td> 
    <td>(Any)</td> 
    <td>Automatic Update Notifications</td> 
  </tr> 
  <tr> 
    <td>Template::Plugin::GD::Image</td> 
    <td>(Any)</td> 
    <td>Graphical Reports</td> 
  </tr> 
  <tr> 
    <td>GD::Text</td> 
    <td>(Any)</td> 
    <td>Graphical Reports</td> 
  </tr> 
  <tr> 
    <td>GD::Graph</td> 
    <td>(Any)</td> 
    <td>Graphical Reports</td> 
  </tr> 
  <tr> 
    <td>GD</td> 
    <td>1.20</td> 
    <td>Graphical Reports, New Charts, Old Charts</td> 
  </tr> 
  <tr> 
    <td>Email::MIME::Attachment::Stripper</td> 
    <td>(Any)</td> 
    <td>Inbound Email</td> 
  </tr> 
  <tr> 
    <td>Email::Reply</td> 
    <td>(Any)</td> 
    <td>Inbound Email</td> 
  </tr> 
  <tr> 
    <td>Net::LDAP</td> 
    <td>(Any)</td> 
    <td>LDAP Authentication</td> 
  </tr> 
  <tr> 
    <td class="req_new">TheSchwartz</td> 
    <td class="req_new">(Any)</td> 
    <td>Mail Queueing</td> 
  </tr> 
  <tr> 
    <td class="req_new">Daemon::Generic</td> 
    <td class="req_new">(Any)</td> 
    <td>Mail Queueing</td> 
  </tr> 
  <tr> 
    <td>HTML::Parser</td> 
    <td>3.40</td> 
    <td>More HTML in Product/Group Descriptions</td> 
  </tr> 
  <tr> 
    <td>HTML::Scrubber</td> 
    <td>(Any)</td> 
    <td>More HTML in Product/Group Descriptions</td> 
  </tr> 
  <tr> 
    <td>XML::Twig</td> 
    <td>(Any)</td> 
    <td>Move Bugs Between Installations</td> 
  </tr> 
  <tr> 
    <td>MIME::Parser</td> 
    <td>5.406</td> 
    <td>Move Bugs Between Installations</td> 
  </tr> 
  <tr> 
    <td>Chart::Base</td> 
    <td>1.0</td> 
    <td>New Charts, Old Charts</td> 
  </tr> 
  <tr> 
    <td>Image::Magick</td> 
    <td>(Any)</td> 
    <td>Optionally Convert BMP Attachments to PNGs</td> 
  </tr> 
  <tr> 
    <td>PatchReader</td> 
    <td>0.9.4</td> 
    <td>Patch Viewer</td> 
  </tr> 
  <tr> 
    <td>Authen::Radius</td> 
    <td>(Any)</td> 
    <td>RADIUS Authentication</td> 
  </tr> 
  <tr> 
    <td>Authen::SASL</td> 
    <td>(Any)</td> 
    <td>SMTP Authentication</td> 
  </tr> 
  <tr> 
    <td>SOAP::Lite</td> 
    <td>0.710.06</td> 
    <td>XML-RPC Interface</td> 
  </tr> 
  <tr> 
    <td>mod_perl2</td> 
    <td>1.999022</td> 
    <td>mod_perl</td> 
  </tr> 
</table> 

<h2 id="v34_feat">New Features and Improvements</h2>

<ul>
  <li><a href="#v34_feat_enter">Simple Bug Filing</a></li>
  <li><a href="#v34_feat_index">New Home Page</a></li>
  <li><a href="#v34_feat_spam">Email Addresses Hidden From Logged-Out 
    Users</a></li>
  <li><a href="#v34_feat_urls">Shorter Search URLs</a></li>
  <li><a href="#v34_feat_async">Asynchronous Email Sending</a></li>
  <li><a href="#v34_feat_tz">Dates and Times Displayed In User's Time
    Zone</a></li>
  <li><a href="#v34_feat_vis">Custom Fields That Only Appear When
    Another Field Has a Particular Value</a></li>
  <li><a href="#v34_feat_vals">Custom Fields Whose List of Values
    Change Depending on the Value of Another Field</a></li>
  <li><a href="#v34_feat_bugid">New Custom Field Type: 
    Bug ID</a></li>
  <li><a href="#v34_feat_see">"See Also" Field</a></li>
  <li><a href="#v34_feat_cols">Re-order Columns in Search Results</a></li>
  <li><a href="#v34_feat_desc">Search Descriptions</a></li>
  <li><a href="#v34_feat_other">Other Enhancements and Changes</a></li>
</ul>

<h3 id="v34_feat_enter">Simple Bug Filing</h3>

<p>When entering a new bug, the vast majority of fields are
  now hidden by default, which enormously simplifies the bug-filing form. 
  You can click "Show Advanced Fields" to show all the fields, if you want
  them. Bugzilla remembers whether you last used the "Advanced"
  or "Simple" version of the bug-entry form, and will display the
  same version to you again next time you file a bug.</p>

<h3 id="v34_feat_index">New Home Page</h3>

<p>Bugzilla's front page has been redesigned to be better at
  guiding new users into the activities that they most commonly want to
  do. Further enhancements to the home page are coming in future versions
  of Bugzilla.</p>

<h3 id="v34_feat_spam">Email Addresses Hidden From Logged-Out Users</h3>

<p>To help prevent spam to Bugzilla users, all email addresses
  stored in Bugzilla are now displayed only if you are logged in.
  If you are logged out, only the part before the "@" of the email address is
  displayed. This includes bug lists, viewing bugs, the
  XML format of a bug, and any other place in the web interface that
  an email address could appear.</p>

<p>Email addresses are not filtered out of bug comments.
  The WebService still returns full email addresses, even if you are logged
  out.</p>

<h3 id="v34_feat_urls">Shorter Search URLs</h3>

<p>When submitting a search, all the unused fields are now stripped from
  the URL, so search URLs are much more meaningful, and much shorter.</p>

<h3 id="v34_feat_async">Asynchronous Email Sending</h3>

<p>The largest performance problem in former versions of Bugzilla
  was that when updating bugs, email would be sent immediately
  to every user who needed to be notified, and <kbd>process_bug.cgi</kbd>
  would wait for the emails to be sent before continuing.</p>

<p>Now Bugzilla is capable of queueing emails to be sent
  while a bug is being updated, and sending them in the
  background. This requires the administrator to run a daemon
  that comes with Bugzilla, named
  <a href="https://www.bugzilla.org/docs/4.0/en/html/api/jobqueue.html">jobqueue.pl</a>,
  and to enable the <a href="editparams.cgi?section=mta#use_mailer_queue">
  use_mailer_queue</a> parameter.</p>

<p>Using the background email-sending daemon instead of sending mail directly
  should result in a very large speed-up for updating bugs,
  particularly on larger installations.</p>

<h3 id="v34_feat_tz">Dates and Times Displayed In User's Time Zone</h3>

<p>Users can now select what time zone they are in and Bugzilla
  will adjust displayed times to be correct for their time zone. However,
  times the user inputs are unfortunately still in Bugzilla's
  time zone.</p>

<h3 id="v34_feat_vis">Custom Fields That Only Appear When Another Field
    Has a Particular Value</h3>

<p>When creating a new custom field (or updating the definition of
  an existing custom field), you can now say that "this field only
  appears when field X has value Y". (In the future, you will be able
  to select multiple values for "Y", so a field will appear when any
  one of those values is selected.)</p>

<p>This feature only hides fields--it doesn't make their values go away.
  So bugs will still show up in searches for that field's
  value, but the field won't appear in the user interface.</p>

<p>This is a good way of making Product-specific fields.</p>

<h3 id="v34_feat_vals">Custom Fields Whose List of Values Change
    Depending on the Value of Another Field</h3>

<p>When creating a drop-down or multiple-selection custom field, you can
  now specify that another field "controls the values" of this field.
  Then, when adding values to this field, you can say that a particular
  value only appears when the other field is set to a particular
  value.</p>

<p>Here's an example: Let's say that we create a field called "Colors",
  and we make the Product field "control the values" for Colors. Then we
  add Blue, Red, Black, and Yellow as legal values for the "Colors" field.
  Now we can say that "Blue" and "Red" only appear as valid choices in 
  Product A, "Yellow" only appears in Product B, but "Black" <em>always</em>
  appears.</p>

<p>One thing to note is that this feature only controls what values appear in
  the <em>user interface</em>. Bugzilla itself will still accept
  any combination of values as valid, in the backend.</p>

<h3 id="v34_feat_bugid">New Custom Field Type: Bug ID</h3>

<p>You can now create a custom field that holds a reference to a single
  valid bug ID. In the future this will be enhanced to allow
  bugs to refer to each other via this field.</p>

<h3 id="v34_feat_see">"See Also" Field</h3>

<p>We have added a new standard field called "See Also" to 
  Bugzilla. In this field, you can put URLs to multiple 
  bugs in any Bugzilla installation, to indicate
  that those bugs are related to this one. It also supports
  adding URLs to bugs in 
  <a href="http://launchpad.net/">Launchpad</a>.</p>

<p>Right now, the field just validates the URLs and then displays them, but
  in the future, it will grab information from the other installation about
  the bug and display it here, and possibly even update the
  other installation.</p>

<p>If your installation does not need this field, you can hide it by disabling
  the <a href="editparams.cgi?section=bugfields#use_see_also">use_see_also
  parameter</a>.</p>

<h3 id="v34_feat_cols">Re-order Columns in Search Results</h3>

<p>There is a new interface for choosing what columns appear in search
  results, which allows you to change the order in which columns appear
  from left to right when viewing the bug list.</p>

<h3 id="v34_feat_desc">Search Descriptions</h3>

<p>When displaying search results, Bugzilla will now show
  a brief description of what you searched for, at the top of the
  bug list.</p>

<h3 id="v34_feat_other">Other Enhancements and Changes</h3>

<h4>Enhancements for Users</h4>

<ul>
  <li>You can now log in from every page, using the login form that appears
    in the header or footer when you click "Log In".</li>
  <li>When viewing a bug, obsolete attachments are now
    hidden from the attachment list by default. You can show them
    by clicking "Show Obsolete" at the bottom of the attachment list.</li>
  <li>In the Email Preferences, you can now choose to get email when
    a new bug report is filed and you have a particular 
    role on it.</li>
  <li>When resolving a mid-air collision, you can now choose to submit
    only your comment.</li>
  <li>You can now set the Blocks and Depends On field on the "Change
    Several Bugs At Once" page.</li>
  <li>If your installation uses the "insidergroup" feature, you can now add
    private comments on the "Change Several Bugs At Once" 
    page.</li>
  <li>When viewing a search result, you can now hover over any abbreviated
    field to see its full value.</li>
  <li>When logging out, users are now redirected to the main page of
    Bugzilla instead of an empty page.</li>
  <li>When editing a bug, text fields (except the comment box) now
    grow longer when you widen your browser window.</li>
  <li>When viewing a bug, the Depends On and Blocks list will
    display a bug's alias if it has one, instead of its id.
    Also, closed bugs will be sorted to the end of the list.</li>

  <li>If you use the time-tracking features of Bugzilla, and
    you enable the time-tracking related columns in a search result,
    then you will see a summary of the time-tracking data at the
    bottom of the search result.</li>
  <li>For users of time-tracking, the <kbd>summarize_time.cgi</kbd> page
    now contains more data.</li>

  <li>When viewing an attachment's details page while you are logged-out,
    flags are no longer shown as editable.</li>
  <li>Cloning a bug will now retain the "Blocks" and "Depends On"
    fields from the bug being cloned.</li>
  <li>Bugmail for new bugs will now indicate
    what security groups the bug has been restricted to.</li>
  <li>You can now use any custom drop-down field as an axis for a tabular
    or graphical report.</li>
  <li>The <kbd>X-Bugzilla-Type</kbd> header in emails sent by 
    Bugzilla is now "new" for bugmail sent for
    newly-filed bugs, and "changed" for emails having to do
    with updated bugs.</li>
  <li>Mails sent by the "Whining" system now contain the header
    <kbd>X-Bugzilla-Type: whine</kbd>.</li>
  <li>bugmail now contains a X-Bugzilla-URL header to uniquely
    identify which Bugzilla installation the email came from.</li>
  <li>If you input an invalid regular expression anywhere in
    Bugzilla, it will now tell you explicitly instead of failing
    cryptically.</li>
  <li>The <kbd>duplicates.xul</kbd> page (which wasn't used by very many
    people) is now gone.</li>
</ul>

<h4>Enhancements for Administrators and Developers</h4>

<ul>
  <li>Bugzilla now uses the SHA-256 algorithm (a variant of 
    SHA-2) to encrypt passwords in the database, instead of using Unix's
    "crypt" function. This allows passwords longer than eight characters
    to actually be effective. Each user's password will be converted to
    SHA-256 the first time they log in after you upgrade to 
    Bugzilla 3.4 or later.</li>
  <li>If you are using database replication with Bugzilla,
    many more scripts now take advantage of the read-only slave (the 
    "shadowdb"). It may be safe to open up <kbd>show_bug.cgi</kbd>
    to search-engine indexing by editing your <kbd>robots.txt</kbd> file,
    now, if your Bugzilla is on fast-enough hardware.</li>
  <li>The database now uses foreign keys to enforce the validity of
    relationships between tables. Not every single table has all its 
    foreign keys yet, but most do.</li>
  <li>Various parameters have been removed, in an effort to de-clutter
    the parameter interface and simplify Bugzilla's code.
    The parameters that were removed were: timezone, supportwatchers,
    maxpatchsize, commentonclearresolution, commentonreassignbycomponent,
    showallproducts. They have all been replaced with sensible default
    behaviors. (For example, user watching is now always enabled.)</li>
  <li>When adding <code>&amp;debug=1</code> to the end of a 
    <kbd>buglist.cgi</kbd> URL, Bugzilla will now also do an
    EXPLAIN on the query, to help debug performance issues.</li>
  <li>When editing flag types in the administrative interface, you can now
    see how many flags of each type have been set.</li>
</ul>

<h4>WebService Changes</h4>

<ul>
  <li>Various functions have been added to the WebService:
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService/Bug.html#history">Bug.history</a>,
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService/Bug.html#search">Bug.search</a>,
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService/Bug.html#comments">Bug.comments</a>,
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService/Bug.html#update_see_also">Bug.update_see_also</a>,
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService/User.html#get">User.get</a>,
    and <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService/Bugzilla.html#time">Bugzilla.time</a>
    (<kbd>Bugzilla.timezone</kbd> is now deprecated).
  </li>
  <li>For network efficiency, you can now limit which fields are returned 
    from certain WebService functions, like <kbd>User.get</kbd>.</li>
  <li>There is now a "permissive" argument for the <kbd>Bug.get</kbd>
    WebService function, which causes it not to throw an error when you
    ask for bugs you can't see.</li>

  <li>The <kbd>Bug.get</kbd> method now returns many more fields.</li>
  <li>The <kbd>Bug.add_comment</kbd> method now returns the ID of the comment
    that was just added.</li>
  <li>The <kbd>Bug.add_comment</kbd> method will now throw an error if you
    try to add a private comment but do not have the correct permissions.
    (In previous versions, it would just silently ignore the <kbd>private</kbd>
    argument if you didn't have the correct permissions.)</li>
  <li>Many WebService function parameters now take individual values in
    addition to arrays.</li>
  <li>The WebService now validates input types--it makes sure that dates
    are in the right format, that ints are actually ints, etc. It will throw
    an error if you send it invalid data. It also accepts empty ints, doubles,
    and dateTimes, and translates them to <kbd>undef</kbd>.</li>
</ul>

<h2 id="v34_issues">Outstanding Issues</h2>

<ul>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=423439">Bug 423439</a>: Tabs in comments will be converted
    to four spaces, due to a b<!-- -->ug in Perl as of Perl 5.8.8.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=69621">Bug 69621</a>: If you rename or remove a keyword that is
    in use on bugs, you will need to rebuild the "keyword cache"
    by running <a href="sanitycheck.cgi">sanitycheck.cgi</a> and choosing 
    the option to rebuild the cache when it asks. Otherwise keywords may 
    not show up properly in search results.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=89822">Bug 89822</a>: When changing multiple bugs at 
    the same time, there is no "mid-air collision" protection.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=276230">Bug 276230</a>: The support for restricting access to 
    particular Categories of New Charts is not complete. You should treat 
    the 'chartgroup' Param as the only access mechanism available.<br>
    However, charts migrated from Old Charts will be restricted to 
    the groups that are marked MANDATORY for the corresponding Product.
    There is currently no way to change this restriction, and the 
    groupings will not be updated if the group configuration
    for the Product changes.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=370370">Bug 370370</a>: mod_perl support is currently not
    working on Windows machines.</li>
</ul>

<h2 id="v34_upgrading">Notes On Upgrading From a Previous Version</h2>

<p>When upgrading to 3.4, <kbd>checksetup.pl</kbd> will create foreign keys
  for many columns in the database. Before doing this, it will check the
  database for consistency. If there are an unresolvable consistency
  problems, it will tell you what table and column in the database contain
  the bad values, and which values are bad. If you don't know what else to do,
  you can always delete the database records which contain the bad values by
  logging in to your database and running the following command:</p>

<p><code>DELETE FROM <var>table</var> WHERE <var>column</var> IN 
  (<var>1, 2, 3, 4</var>)</code></p>

<p>Just replace "table" and "column" with the name of the table 
  and column that <kbd>checksetup.pl</kbd> mentions, and "1, 2, 3, 4"
  with the invalid values that <kbd>checksetup.pl</kbd> prints out.</p>

<p>Remember that you should always back up your database before doing
  an upgrade.</p>

<h2 id="v34_code_changes">Code Changes Which May Affect Customizations</h2>

<ul>
  <li><kbd>checksetup.pl</kbd> now re-writes the <kbd>localconfig</kbd>
    file every time it runs, keeping the current values set (if there
    are any), but moving any unexpected variables into a file called
    <kbd>localconfig.old</kbd>. If you want to continue having custom
    varibles in <kbd>localconfig</kbd>, you will have to add them to
    the <code>LOCALCONFIG_VARS</code> constant in 
    <kbd>Bugzilla::Install::Localconfig</kbd>.</li>
  <li><kbd>Bugzilla::Object-&gt;update()</kbd> now returns something different
    in list context than it does in scalar context.</li>
  <li><kbd>Bugzilla::Object-&gt;check()</kbd> now can take object
    ids in addition to names. Just pass in <code>{ id =&gt; $some_value
    }</code>.</li>
  <li>Instead of being defined in <kbd>buglist.cgi</kbd>, columns for
    search results are now defined in a subroutine called <code>COLUMNS</code>
    in <kbd>Bugzilla::Search</kbd>. The data now mostly comes from the
    <kbd>fielddefs</kbd> table in the database. Search.pm now takes a list
    of column names from fielddefs for its <kbd>fields</kbd> argument instead 
    of literal SQL columns.</li>
  <li><kbd>Bugzilla::Field-&gt;legal_values</kbd> now returns an array of
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/Field/Choice.html">Bugzilla::Field::Choice</a>
    objects instead of an array of strings. Bugzilla::Field::Choice will be used
    in more places, in the future.</li>
  <li>We now use <kbd>Bugzilla::Bug-&gt;check()</kbd> instead of 
    <kbd>ValidateBugId</kbd>.</li>
  <li>The <kbd>groups</kbd> and <kbd>bless_groups</kbd> methods in 
    <kbd>Bugzilla::User</kbd> now return an arrayref of 
    <kbd>Bugzilla::Group</kbd> objects instead of a hashref with
    group ids and group names.</li>
  <li>Standard Bugzilla drop-down fields now have their type
    set to <kbd>FIELD_TYPE_SINGLE_SELECT</kbd> in the fielddefs table.</li>
  <li><kbd>Bugzilla-&gt;usage_mode</kbd> now defaults to 
    <kbd>USAGE_MODE_CMDLINE</kbd> if we are not running inside a web
    server.</li>
  <li>We no longer delete environment variables like <kbd>$ENV{PATH}</kbd>
    automatically unless we're actually running in taint mode.</li>
  <li>We are now using YUI 2.6.0.</li>
  <li>In <a href="config.cgi?ctype=rdf">the RDF format of config.cgi</a>,
    the "resource" attribute for flags now contains "flag.cgi" instead
    of "flags.cgi".</li>
</ul>







<h1 id="v34_previous">Bugzilla 3.2 Release Notes</h1>

<h2>Table of Contents</h2>

<ul class="bz_toc">
  <li><a href="#v32_introduction">Introduction</a></li>
  <li><a href="#v32_point">Updates In This 3.2.x Release</a></li>
  <li><a href="#v32_security">Security Fixes In This 3.2.x Release</a></li>
  <li><a href="#v32_req">Minimum Requirements</a></li>
  <li><a href="#v32_feat">New Features and Improvements</a></li>
  <li><a href="#v32_issues">Outstanding Issues</a></li>
  <li><a href="#v32_upgrading">How to Upgrade From An Older Version</a></li>
  <li><a href="#v32_code_changes">Code Changes Which May Affect 
    Customizations</a></li>
  <li><a href="#v32_previous">Release Notes for Previous Versions</a></li>
</ul>

<h2 id="v32_introduction">Introduction</h2>

<p>Welcome to Bugzilla 3.2! This is our first major feature
  release since Bugzilla 3.0, and it brings a lot of great
  improvements and polish to the Bugzilla experience.</p>

<p>If you're upgrading, make sure to read <a href="#v32_upgrading">How to
  Upgrade From An Older Version</a>. If you are upgrading from a release
  before 3.0, make sure to read the release notes for all the 
  <a href="#v32_previous">previous versions</a> in between your version
  and this one, <strong>particularly the "Notes For Upgraders" section of each
  version's release notes</strong>.</p>

<h2 id="v32_point">Updates in this 3.2.x Release</h2>

<p>This section describes what's changed in the most recent b<!-- -->ug-fix
  releases of Bugzilla after 3.2. We only list the
  most important fixes in each release. If you want a detailed list of
  <em>everything</em> that's changed in each version, you should use our
  <a href="https://github.com/bugzilla/bugzilla.github.io/compare/4.0">Change Log 
  Page</a>.</p>

<h3>3.2.3</h3>

<ul>
  <li>Bugzilla is now compatible with MySQL 5.1.x versions 5.1.31
    and greater.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=480001">Bug 480001</a>)</li>
  <li>On Windows, Bugzilla sometimes would send mangled emails 
    (that would often fail to send).
  (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=467920">Bug 467920</a>)</li>
  <li><code>recode.pl</code> would sometimes crash when trying to convert
    databases from older versions of Bugzilla.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=431201">Bug 431201</a>)</li>
  <li>Running a saved search with Unicode characters in its name would
    cause Bugzilla to crash.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=477513">Bug 477513</a>)</li>
  <li>Bugzilla clients like Mylyn can now update bugs
    again (the bug XML format now contains a "token" element that
    can be used when updating a bug).
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=476678">Bug 476678</a>)</li>
  <li>For installations using the <code>shadowdb</code> parameter, 
    Bugzilla was accidentally writing to the "tokens" table
    in the shadow database (instead of the master database) when using the
    "Change Several Bugs at Once" page.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=476943">Bug 476943</a>)</li>
</ul>

<p>This release also contains a security fix. See the
  <a href="#v32_security">Security Fixes Section</a> for details.</p>

<h3>3.2.2</h3>

<p>This release fixes one security issue that is critical for installations
  running 3.2.1 under mod_perl. See the 
  <a href="https://www.bugzilla.org/security/3.0.7/">Security Advisory</a>
  for details.</p>

<h3>3.2.1</h3>

<ul>
  <li>Attachments, charts, and graphs would sometimes be garbled on Windows.
  (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=464992">Bug 464992</a>)</li>

  <li>Saving changes to parameters would sometimes fail silently (particularly
    on Windows when the web server didn't have the right permissions to
    update the <code>params</code> file). Bugzilla will now
    throw an error in this case, telling you what is wrong.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=347707">Bug 347707</a>)</li>

  <li>If you were using the <code>usemenuforusers</code> parameter,
    and a bug was assigned to (or had a QA Contact of) a disabled
    user, that field would be reset to the first user in the list when
    updating a bug.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=465589">Bug 465589</a>)</li>

  <li>If you were using the <code>PROJECT</code> environment variable
    to have multiple Bugzilla installations using one codebase,
    project-specific templates were being ignored. 
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=467324">Bug 467324</a>)</li>

  <li>Some versions of the SOAP::Lite Perl module had a bug that caused
    Bugzilla's XML-RPC service to break. 
    <kbd>checksetup.pl</kbd> now checks for these bad versions and 
    will reject them.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=468009">Bug 468009</a>)</li>

  <li>The font sizes in various places were too small, when using the
    Classic skin.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=469136">Bug 469136</a>)</li>
</ul>

<h2 id="v32_security">Security Fixes In This 3.2.x Release</h2>

<h3>3.2.3</h3>

<p>This release fixes one security issue related to attachments. See the
  <a href="https://www.bugzilla.org/security/3.2.2/">Security Advisory</a>
  for details.</p>

<h3>3.2.2</h3>

<p>This release fixes one security issue that is critical for installations
  running 3.2.1 under mod_perl. See the 
  <a href="https://www.bugzilla.org/security/3.0.7/">Security Advisory</a> 
  for details.</p>

<h3>3.2.1</h3>

<p>This release contains several security fixes. One fix may break any
  automated scripts you have that are loading <kbd>process_bug.cgi</kbd>
  directly. We recommend that you read the entire 
  <a href="https://www.bugzilla.org/security/2.22.6/">Security Advisory</a>
  for this release.</p>

<h2 id="v32_req">Minimum Requirements</h2>

<p>Any requirements that are new since 3.0.5 will look like
  <span class="req_new">this</span>.</p>

<ul>
  <li><a href="#v32_req_perl">Perl</a></li>
  <li><a href="#v32_req_mysql">For MySQL Users</a></li>
  <li><a href="#v32_req_pg">For PostgreSQL Users</a></li>
  <li><a href="#v32_req_oracle">For Oracle Users</a></li>
  <li><a href="#v32_req_modules">Required Perl Modules</a></li>
  <li><a href="#v32_req_optional_mod">Optional Perl
    Modules</a></li>
</ul>

<h3 id="v32_req_perl">Perl</h3>

<p>Perl <span class="req_new">v<strong>5.8.1</strong></span></p>

<h3 id="v32_req_mysql">For MySQL Users</h3>

<ul>
  <li>MySQL v4.1.2</li>
    <li><strong>perl module:</strong>
      DBD::mysql <span class="req_new">v4.00</span></li>
</ul>

<h3 id="v32_req_pg">For PostgreSQL Users</h3>

<ul>
  <li>PostgreSQL v8.00.0000</li>
  <li><strong>perl module:</strong> DBD::Pg v1.45</li>
</ul>

<h3 id="v32_req_oracle">Email Addresses Hidden From Logged-Out Users
    For Oracle Users</h3>

<ul>
  <li>Oracle v10.02.0</li>
  <li><strong>perl module:</strong> DBD::Oracle v1.19</li>
</ul>

<h3 id="v32_req_modules">Required Perl Modules</h3>

<table class="req_table" border="0" cellpadding="0" cellspacing="0">
<tr> <th>Module</th>       <th>Version</th> </tr>
<tr> <td>CGI</td>          <td class="req_new">3.21 (on Perl 5.8.x) 
                             or 3.33 (on Perl 5.10.x)</td> </tr>
<tr> <td>Date::Format</td> <td>2.21</td> </tr>
<tr> <td>File::Spec</td>   <td>0.84</td> </tr>
<tr> <td>DBI</td>          <td>1.41</td> </tr>
<tr> <td>Template</td>     <td class="req_new">2.15</td> </tr>
<tr> <td>Email::Send</td>  <td>2.00</td> </tr>
<tr> <td>Email::MIME</td>  <td class="req_new">1.861</td> </tr>
<tr> 
  <td class="req_new">Email::MIME::Encodings</td> 
  <td class="req_new">1.313</td>
</tr>
<tr>
  <td>Email::MIME::Modifier</td> 
  <td class="req_new">1.442</td>
</tr>
</table>

<h3 id="v32_req_optional_mod">Optional Perl Modules</h3>

<p>The following perl modules, if installed, enable various
  features of Bugzilla:</p>

<table class="req_table" border="0" cellpadding="0" cellspacing="0">
<tr> 
  <th>Module</th>
  <th>Version</th>
  <th>Enables Feature</th>
</tr>
<tr>
  <td>LWP::UserAgent</td>
  <td>(Any)</td>
  <td>Automatic Update Notifications</td>
</tr>
<tr>
  <td>Template::Plugin::GD::Image</td> 
  <td>(Any)</td> 
  <td>Graphical Reports</td>
</tr>
<tr>
  <td>GD::Text</td> 
  <td>(Any)</td> 
  <td>Graphical Reports</td>
</tr>
<tr>
  <td>GD::Graph</td> 
  <td>(Any)</td> 
  <td>Graphical Reports</td>
</tr>
<tr>
  <td>GD</td> 
  <td>1.20</td> 
  <td>Graphical Reports, New Charts, Old Charts</td>
</tr>
<tr>
  <td>Email::MIME::Attachment::Stripper</td> 
  <td>(Any)</td> 
  <td>Inbound Email</td>
</tr>
<tr>
  <td>Email::Reply</td> 
  <td>(Any)</td> 
  <td>Inbound Email</td>
</tr>
<tr>
  <td>Net::LDAP</td> 
  <td>(Any)</td> 
  <td>LDAP Authentication</td>
</tr>
<tr>
  <td>HTML::Parser</td> 
  <td>3.40</td> 
  <td>More HTML in Product/Group Descriptions</td>
</tr>
<tr>
  <td>HTML::Scrubber</td> 
  <td>(Any)</td> 
  <td>More HTML in Product/Group Descriptions</td>
</tr>
<tr>
  <td>XML::Twig</td> 
  <td>(Any)</td> 
  <td>Move Bugs Between Installations</td>
</tr>
<tr>
  <td>MIME::Parser</td> 
  <td>5.406</td> 
  <td>Move Bugs Between Installations</td>
</tr>
<tr>
  <td>Chart::Base</td> 
  <td>1.0</td> 
  <td>New Charts, Old Charts</td>
</tr>
<tr>
  <td>Image::Magick</td> 
  <td>(Any)</td> 
  <td>Optionally Convert BMP Attachments to PNGs</td>
</tr>
<tr>
  <td>PatchReader</td> 
  <td>0.9.4</td> 
  <td>Patch Viewer</td>
</tr>
<tr>
  <td class="req_new">Authen::Radius</td> 
  <td class="req_new">(Any)</td> 
  <td>RADIUS Authentication</td>
</tr>
<tr>
  <td class="req_new">Authen::SASL</td> 
  <td class="req_new">(Any)</td> 
  <td>SMTP Authentication</td>
</tr>
<tr>
  <td>SOAP::Lite</td> 
  <td>(Any)</td> 
  <td>XML-RPC Interface</td>
</tr>
<tr>
  <td>mod_perl2</td> 
  <td>1.999022</td> 
  <td>mod_perl</td>
</tr>
</table>

<h2 id="v32_feat">New Features and Improvements</h2>

<ul>
  <li><a href="#v32_feat_ui">Major UI Improvements</a></li>
  <li><a href="#v32_feat_skin">New Default Skin: Dusk</a></li>
  <li><a href="#v32_feat_status">Custom Status Workflow</a></li>
  <li><a href="#v32_feat_fields">New Custom Field Types</a></li>
  <li><a href="#v32_feat_install">Easier Installation</a></li>
  <li><a href="#v32_feat_oracle">Experimental Oracle Support</a></li>
  <li><a href="#v32_feat_utf8">Improved UTF-8 Support</a></li>
  <li><a href="#v32_feat_grcons">Group Icons</a></li>
  <li><a href="#v32_feat_other">Other Enhancements and Changes</a></li>
</ul>

<h3 id="v32_feat_ui">Major UI Improvements</h3>

<p>Bugzilla 3.2 has had some UI assistance from the NASA
  Human-Computer Interaction department and the new 
  <a href="https://wiki.mozilla.org/Bugzilla:UE">Bugzilla
  User Interface Team</a>.</p>

<p>In particular, you will notice a massively redesigned bug
  editing form, in addition to our <a href="#v32_feat_skin">new skin</a>.</p>

<h3 id="v32_feat_skin">New Default Skin: Dusk</h3>

<p>Bugzilla 3.2 now ships with a skin called "Dusk" that is
  a bit more colorful than old default "Classic" skin.</p>

<p>Upgrading installations will still default to the "Classic" 
  skin--administrators can change the default in the Default Preferences
  control panel. Users can also choose to use the old skin in their
  Preferences (or using the View :: Page Style menu in Firefox).</p>

<p>The changes that Bugzilla required for Dusk made
  Bugzilla much easier to skin. See the
  <a href="https://wiki.mozilla.org/Bugzilla:Addons#Skins">Addons page</a>
  for additional skins, or try making your own!</p>

<h3 id="v32_feat_status">Custom Status Workflow</h3>

<p>You can now customize the list of statuses in Bugzilla,
  and transitions between them.</p>

<p>You can also specify that a comment must be made on certain transitions.</p>

<h3 id="v32_feat_fields">New Custom Field Types</h3>

<p>Bugzilla 3.2 has support for three new types of
  custom fields:</p>

<ul>
  <li>Large Text: Adds a multi-line textbox to your bugs.</li>
  <li>Multiple Selection Box: Adds a box that allows you to choose
    multiple items from a list.</li>
  <li>Date/Time: Displays a date and time, along with a JavaScript
    calendar popup to make picking a date easier.</li>
</ul>

<h3 id="v32_feat_install">Easier Installation</h3>

<p>Bugzilla now comes with a script called 
  <kbd>install-module.pl</kbd> that can automatically download
  and install all of the required Perl modules for Bugzilla.
  It stores them in a directory inside your Bugzilla
  installation, so you can use it even if you don't have administrator-level
  access to your machine, and without modifying your main Perl install.</p>

<p><kbd>checksetup.pl</kbd> will print out instructions for using
  <kbd>install-module.pl</kbd>, or you can read its
  <a href="https://www.bugzilla.org/docs/4.0/en/html/api/install-module.html">documentation</a>.</p>

<h3 id="v32_feat_oracle">Experimental Oracle Support</h3>

<p>Bugzilla 3.2 contains experimental support for using 
  Oracle as its database. Some features of Bugzilla are known 
  to be broken on Oracle, but hopefully will be working by our next major
  release.</p>

<p>The Bugzilla Project, as an open-source project, of course
  does not recommend the use of proprietary database solutions. However,
  if your organization requires that you use Oracle, this will allow
  you to use Bugzilla!</p>

<p>The Bugzilla Project thanks Oracle Corp. for their extensive
  development contributions to Bugzilla which allowed this to 
  happen!</p>

<h3 id="v32_feat_utf8">Improved UTF-8 Support</h3>

<p>Bugzilla 3.2 now has advanced UTF-8 support in its code,
  including correct handling for truncating and wrapping multi-byte
  languages. Major issues with multi-byte or unusual languages
  are now resolved, and Bugzilla should now be usable
  by users in every country with little (or at least much less)
  customization.</p>

<h3 id="v32_feat_grcons">Group Icons</h3>

<p>Administrators can now specify that users who are in certain groups
  should have an icon appear next to their name whenever they comment.
  This is particularly useful for distinguishing developers from 
  bug reporters.</p>

<h3 id="v32_feat_other">Other Enhancements and Changes</h3>

<p>These are either minor enhancements, or enhancements that have
  very short descriptions. Some of these are very useful, though!</p>

<h4>Enhancements For Users</h4>

<ul>
  <li><strong>Bugs</strong>: You can now reassign
    a bug at the same time as you are changing its status.</li>
  <li><strong>Bugs</strong>: When entering a bug, 
    you will now see the description of a component when you select it.</li>
  <li><strong>Bugs</strong>: The bug view now 
    contains some <a href="http://microformats.org/about/">Microformats</a>,
    most notably for users' names and email addresses.</li>
  <li><strong>Bugs</strong>: You can now remove a QA Contact
    from a bug simply by clearing the QA Contact field.</li>
  <li><strong>Bugs</strong>: There is now a user preference 
    that will allow you to exclude the quoted text when replying 
    to comments.</li>
  <li><strong>Bugs</strong>: You can now expand or collapse
    individual comments in the bug view.</li>

  <li><strong>Attachments</strong>: There is now "mid-air collision" 
      protection when editing attachments.</li>
  <li><strong>Attachments</strong>: Patches in the Diff Viewer now show 
    line numbers (<a href="https://bugzilla.mozilla.org/attachment.cgi?id=327546">Example</a>).</li>
  <li><strong>Attachments</strong>: After creating or updating an attachment,
    you will be immediately shown the bug that the attachment
    is on.</li>

  <li><strong>Search</strong>: You can now reverse the sort of 
    a bug list by clicking on a column header again.</li>
  <li><strong>Search</strong>: Atom feeds of bug lists now
    contain more fields.</li>
  <li><strong>Search</strong>: QuickSearch now supports searching flags
    and groups. It also now includes the OS field in the list of fields
    it searches by default.</li>
  <li><strong>Search</strong>: "Help" text can now appear on query.cgi 
    for Internet Explorer and other non-Firefox browsers. (It always
    could appear for Firefox.)</li>

  <li>Bugzilla now ships with an icon that will show
    up next to the URL in most browsers. If you want to replace it,
    it's in <kbd>images/favicon.ico</kbd>.</li>

  <li>You can now set the Deadline when using "Change Several 
    Bugs At Once"</li>
  <li><strong>Saved Searches</strong> now save their column list, so if 
    you customize the list of columns and save your search, it will 
    always contain those columns.</li>
  <li><strong>Saved Searches</strong>: When you share a search, you can
    now see how many users have subscribed to it, on 
    <kbd>userprefs.cgi</kbd>.</li>
  <li><strong>Saved Searches</strong>: You can now see what group a 
    shared search was shared to, on the list of available shared searches
    in <kbd>userprefs.cgi</kbd>.</li>
  <li><strong>Flags</strong>: If your installation uses drop-down user 
    lists, the flag requestee box will now contain only users who are 
    actually allowed to take requests.</li>
  <li><strong>Flags</strong>: If somebody makes a request to you, and you
    change the requestee to somebody else, the requester is no longer set
    to you. In other words, you can "redirect" requests and maintain the
    original requester.</li>
  <li><strong>Flags</strong>: Emails about flags now will thread properly
    in email clients to be a part of a bug's thread.</li>
  <li>When using <kbd>email_in.pl</kbd>, you can now add users to the CC
    list by just using <kbd>@cc</kbd> as the field name.</li>
  <li>Many pages (particularly administrative pages) now contain links to
    the relevant section of the Bugzilla Guide, so you can read 
    the documentation for that page.</li>
  <li>Dependency Graphs should render more quickly, as they now (by default)
    only include the same bugs that you'd see in the dependency
    tree.</li>
</ul>

<h4>Enhancements For Administrators</h4>

<ul>
  <li><strong>Admin UI</strong>: Instead of having the Administration 
    Control Panel links in the footer, there is now just one link called 
   "Administration" that takes you to a page that links to all the
    administrative controls for Bugzilla.</li>
  <li><strong>Admin UI</strong>: Administrative pages no longer display
    confirmation pages, instead they redirect you to some useful page 
    and display a message about what changed.</li>
  <li><strong>Admin UI</strong>: The interface for editing group 
     inheritance in <kbd>editgroups.cgi</kbd> is much clearer now.</li>
  <li><strong>Admin UI</strong>: When editing a user, you can now see 
    all the components where that user is the Default Assignee or Default
    QA Contact.</li>

  <li><strong>Email</strong>: For installations that use SMTP to send 
    mail (as opposed to Sendmail), Bugzilla now supports
    SMTP Authentication, so that it can log in to your mail server 
    before sending messages.</li>
  <li><strong>Email</strong>: Using the "Test" mail delivery method now
     creates a valid mbox file to make testing easier.</li>

  <li><strong>Authentication</strong>: Bugzilla now correctly 
    handles LDAP records which contain multiple email addresses. (The first
    email address in the list that is a valid Bugzilla account 
    will be used, or if this is a new user, the first email address in 
    the list will be used.)</li>
  <li><strong>Authentication</strong>: Bugzilla can now take 
    a list of LDAP servers to try in order until it gets a successful
    connection.</li>
  <li><strong>Authentication</strong>: Bugzilla now supports 
    RADIUS authentication.</li>

  <li><strong>Security</strong>: The login cookie is now created as 
    "HTTPOnly" so that it can't be read by possibly malicious scripts. 
    Also, if SSL is enabled on your installation, the login cookie is
    now only sent over SSL connections.</li>
  <li><strong>Security</strong>: The <code>ssl</code> parameter now protects
    every page a logged-in user accesses, when set to "authenticated sessions."
    Also, SSL is now enforced appropriately in the WebServices interface when
    the parameter is set.</li>

  <li><strong>Database</strong>: Bugzilla now uses transactions in 
    the database instead of table locks. This should generally improve
    performance with many concurrent users. It also means if there is
    an unexpected error in the middle of a page, all database changes made
    during that page will be rolled back.</li>
  <li><strong>Database</strong>: You no longer have to set 
    <code>max_packet_size</code> in MySQL to add large attachments. However,
    you may need to set it manually if you restore a mysqldump into your
    database.</li>

  <li>New WebService functions:
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService/Bug.html">B<!-- -->ug.add_comment</a>
    and <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/WebService/Bugzilla.html">Bugzilla.extensions</a>.</li>

  <li>You can now delete custom fields, but only if they have never been
    set on any bug.</li>
  <li>There is now a <kbd>--reset-password</kbd> argument to 
    <kbd>checksetup.pl</kbd> that allows you to reset a user's password
    from the command line.</li>
  <li>There is now a script called <kbd>sanitycheck.pl</kbd> that you can
    run from the command line. It works just like <kbd>sanitycheck.cgi</kbd>.
    By default, it only outputs anything if there's an error, so it's
    ideal for administrators who want to run it nightly in a cron job.</li>
  <li>The <kbd>strict_isolation</kbd> parameter now prevents you from setting
    users who cannot see a bug as a CC, Assignee, or QA
    Contact. Previously it only prevented you from adding users who
    could not <em>edit</em> the bug.</li>
  <li>Extensions can now add their own headers to the HTML &lt;head&gt;
    for things like custom CSS and so on.</li>
  <li><kbd>sanitycheck.cgi</kbd> has been templatized, meaning that the
    entire Bugzilla UI is now contained in templates.</li>
  <li>When setting the <kbd>sslbase</kbd> parameter, you can now specify
    a port number in the URL.</li>
  <li>When importing bugs using <kbd>importxml.pl</kbd>,
    attachments will have their actual creator set as their creator,
    instead of the person who exported the bug from the other
    system.</li>
  <li>The voting system is off by default in new installs. This is to
    prepare for the fact that it will be moved into an extension at
    some point in the future.</li>
  <li>The <code>shutdownhtml</code> parameter now works even when 
    Bugzilla's database server is down.</li>
</ul>

<h3>Enhancements for Localizers (or Localized Installations)</h3>

<ul>
  <li>The documentation can now be localized--in other words, you can have
    documentation installed for multiple languages at once and
    Bugzilla will link to the correct language in its internal
    documentation links.</li>
  <li>Bugzilla no longer uses the <kbd>languages</kbd> parameter.
    Instead it reads the <kbd>template/</kbd> directory to see which
    languages are available.</li>
  <li>Some of the messages printed by <kbd>checksetup.pl</kbd> can now
    be localized. See <kbd>template/en/default/setup/strings.txt.pl</kbd>.
</ul>

<h2 id="v32_issues">Outstanding Issues</h2>

<ul>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=423439">Bug 423439</a>: Tabs in comments will be converted
    to four spaces, due to a b<!-- -->ug in Perl as of Perl 5.8.8.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=69621">Bug 69621</a>: If you rename or remove a keyword that is
    in use on bugs, you will need to rebuild the "keyword cache"
    by running <a href="sanitycheck.cgi">sanitycheck.cgi</a> and choosing 
    the option to rebuild the cache when it asks. Otherwise keywords may 
    not show up properly in search results.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=89822">Bug 89822</a>: When changing multiple bugs at 
    the same time, there is no "mid-air collision" protection.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=276230">Bug 276230</a>: The support for restricting access to 
    particular Categories of New Charts is not complete. You should treat 
    the 'chartgroup' Param as the only access mechanism available.<br>
    However, charts migrated from Old Charts will be restricted to 
    the groups that are marked MANDATORY for the corresponding Product.
    There is currently no way to change this restriction, and the 
    groupings will not be updated if the group configuration
    for the Product changes.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=370370">Bug 370370</a>: mod_perl support is currently not
    working on Windows machines.</li>
</ul>

<h2 id="v32_upgrading">How to Upgrade From An Older Version</h2>

<h3 id="v32_upgrading_notes">Notes For Upgraders</h3>

<ul>
  <li>If you upgrade by CVS, the <kbd>extensions</kbd> and 
    <kbd>skins/contrib</kbd> directories are now in CVS instead of
    being created by <kbd>checksetup.pl</kbd> If you do a <kbd>cvs update</kbd>
    from 3.0, you will be told that your directories are "in the way" and
    you should delete (or move) them and then do <kbd>cvs update</kbd>
    again. Also, the <kbd>docs</kbd> directory has been restructured
    and after you <kbd>cvs update</kbd> you can delete the <kbd>docs/html</kbd>,
    <kbd>docs/pdf</kbd>, <kbd>docs/txt</kbd>, and <kbd>docs/xml</kbd>
    directories.</li>
  <li>If you are using MySQL, you should know that Bugzilla
    now uses InnoDB for all tables. <kbd>checksetup.pl</kbd> will convert
    your tables automatically, but if you have InnoDB disabled,
    the upgrade will not be able to complete (and <kbd>checksetup.pl</kbd>
    will tell you so).</li>

  <li><strong>You should also read the 
    <a href="#v30_upgrading_notes">Bugzilla 3.0 Notes For Upgraders
    section</a> of the 
    <a href="#v32_previous">previous release notes</a> if you are upgrading
    from a version before 3.0.</strong></li>
</ul>

<h3>Steps For Upgrading</h3>

<p>Once you have read the notes above, see the
  <a href="https://www.bugzilla.org/docs/4.0/en/html/upgrade.html">Upgrading 
  documentation</a> for instructions on how to upgrade.</p>

<h2 id="v32_code_changes">Code Changes Which May Affect Customizations</h2>

<ul>
  <li><a href="#v32_code_hooks">More Hooks!</a></li>
  <li><a href="#v32_code_search">Search.pm Rearchitecture</a></li>
  <li><a href="#v32_code_lib">lib Directory</a></li>
  <li><a href="#v32_code_other">Other Changes</a></li>
</ul>

<h3 id="v32_code_hooks">More Hooks!</h3>

<p>There are more code hooks in 3.2 than there were in 3.0. See the
  documentation of <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/Hook.html">Bugzilla::Hook</a>
  for more details.</p>

<h3 id="v32_code_search">Search.pm Rearchitecture</h3>

<p><kbd>Bugzilla/Search.pm</kbd> has been heavily modified, to be much
  easier to read and use. It contains mostly the same code as it did in
  3.0, but it has been moved around and reorganized significantly.</p>

<h3 id="v32_code_lib">lib Directory</h3>

<p>As part of implementing <a href="#v32_feat_install">install-module.pl</a>,
  Bugzilla was given a local <kbd>lib</kbd> directory which
  it searches for modules, in addition to the standard system path.</p>

<p>This means that all Bugzilla scripts now start with
  <code>use lib qw(. lib);</code> as one of the first lines.</p>

<h3 id="v32_code_other">Other Changes</h3>

<ul>
  <li>You should now be using <code>get_status('NEW')</code> instead of
    <code>status_descs.NEW</code> in templates.</li>
  <li>The <code>[&#37;# version = 1.0 &#37;]</code> comment at the top of every
    template file has been removed.</li>
</ul>

<h1 id="v32_previous">Bugzilla 3.0.x Release Notes</h1>

<h2>Table of Contents</h2>

<ul class="bz_toc">
  <li><a href="#v30_introduction">Introduction</a></li>
  <li><a href="#v30_point">Updates In This 3.0.x Release</a></li>
  <li><a href="#v30_req">Minimum Requirements</a></li>
  <li><a href="#v30_feat">New Features and Improvements</a></li>
  <li><a href="#v30_issues">Outstanding Issues</a></li>
  <li><a href="#v30_security">Security Fixes In This Release</a></li>
  <li><a href="#v30_upgrading">How to Upgrade From An Older Version</a></li>
  <li><a href="#v30_code_changes">Code Changes Which May Affect 
    Customizations</a></li>
  <li><a href="#v30_previous">Release Notes for Previous Versions</a></li>
</ul>

<h2 id="v30_introduction">Introduction</h2>

<p>Welcome to Bugzilla 3.0! It's been over eight years since
  we released Bugzilla 2.0, and everything has changed since
  then. Even just since our previous release, Bugzilla 2.22,
  we've added a <em>lot</em> of new features. So enjoy the release, we're
  happy to bring it to you.</p>

<p>If you're upgrading, make sure to read <a href="#v30_upgrading">How to
  Upgrade From An Older Version</a>. If you are upgrading from a release
  before 2.22, make sure to read the release notes for all the 
  <a href="#v30_previous">previous versions</a> in between your version 
  and this one.</p>

<h2 id="v30_point">Updates in this 3.0.x Release</h2>

<p>This section describes what's changed in the most recent b<!-- -->ug-fix
  releases of Bugzilla after 3.0. We only list the
  most important fixes in each release. If you want a detailed list of
  <em>everything</em> that's changed in each version, you should use our
  <a href="https://github.com/bugzilla/bugzilla.github.io/compare/4.0">Change Log Page</a>.</p>

<h3>3.0.6</h3>

<ul>
  <li>Before 3.0.6, unexpected fatal WebService errors would result in
    a <code>faultCode</code> that was a string instead of a number.
   (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=446327">Bug 446327</a>)</li>
  <li>If you created a product or component with the same name as one you
    previously deleted, it would fail with an error about the series table.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=247936">Bug 247936</a>)</li>
</ul>

<p>See also the <a href="#v30_security">Security Advisory</a> section for
  information about a security issue fixed in this release.</p>

<h3>3.0.5</h3>

<ul>
  <li>If you don't have permission to set a flag, it will now appear
    unchangeable in the UI.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=433851">Bug 433851</a>)</li>
  <li>If you were running mod_perl, Bugzilla was not correctly
    closing its connections to the database since 3.0.3, and so sometimes
    the DB would run out of connections.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=441592">Bug 441592</a>)</li>
  <li>The installation script is now clear about exactly which 
    <code>Email::</code> modules are required in Perl, thus avoiding the
    problem where emails show up with a body like 
    <samp>SCALAR(0xBF126795)</samp>.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=441541">Bug 441541</a>)</li>
  <li><a href="https://www.bugzilla.org/docs/4.0/en/html/api/email_in.html">email_in.pl</a>
    is no longer case-sensitive for values of <kbd>@product</kbd>.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=365697">Bug 365697</a>)</li>
</ul>

<p>See also the <a href="#v30_security">Security Advisory</a> section for
  information about security issues fixed in this release.</p>

<h3>3.0.4</h3>

<ul>
  <li>Bugzilla administrators were not being correctly notified
    about new releases.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=414726">Bug 414726</a>)</li>

  <li>There could be extra whitespace in email subject lines.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=411544">Bug 411544</a>)</li>

  <li>The priority, severity, OS, and platform fields were always required by
    the <kbd>B<!-- -->ug.create</kbd> WebService function, even if they had
    defaults specified.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=384009">Bug 384009</a>)</li>

  <li>Better threading of bugmail in some email clients.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=376453">Bug 376453</a>)</li>

  <li>There were many fixes to the Inbound Email Interface 
    (<kbd>email_in.pl</kbd>).
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=92274">Bug 92274</a>,
     <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=377025">Bug 377025</a>,
     <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=412943">Bug 412943</a>,
     <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=413672">Bug 413672</a>, and
     <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=431721">Bug 431721</a>)</li>

  <li><kbd>checksetup.pl</kbd> now handles UTF-8 conversion more reliably during upgrades.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=374951">Bug 374951</a>)</li>

  <li>Comments written in CJK languages are now correctly word-wrapped.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=388723">Bug 388723</a>)</li>

  <li>All emails will now be sent in the correct language, when the user
    has chosen a language for emails.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=405946">Bug 405946</a>)

  <li>On Windows, temporary files created when uploading attachments are now
    correctly deleted when the upload is complete.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=414002">Bug 414002</a>)</li>

  <li><kbd>checksetup.pl</kbd> now prints correct installation instructions
    for Windows users using Perl 5.10.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=414430">Bug 414430</a>)
</ul>

<p>See also the <a href="#v30_security">Security Advisory</a> section for
  information about security issues fixed in this release.</p>

<h3>3.0.3</h3>

<ul>
  <li>mod_perl no longer compiles Bugzilla's code for each Apache
    process individually. It now compiles code only once and shares it among
    each Apache process. This greatly improves performance and highly 
    decreases the memory footprint.
   (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=398241">Bug 398241</a>)</li>

  <li>You can now search for '---' (without quotes) in versions and milestones.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=362436">Bug 362436</a>)</li>

  <li>Bugzilla should no longer break lines unnecessarily in 
    email subjects. This was causing trouble with some email clients.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=374424">Bug 374424</a>)</li>

  <li>If you had selected "I'm added to or removed from this capacity" option
    for the "CC" role in your email preferences, you wouldn't get mail when
    more than one person was added to the CC list at once.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=394796">Bug 394796</a>)</li>

  <li>Deleting a user account no longer deletes whines from another user who
    has the deleted account as addressee. The schedule is simply removed, 
    but the whine itself is left intact.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=395924">Bug 395924</a>)</li>

  <li><kbd>contrib/merge-users.pl</kbd> now correctly merges all required
    fields when merging two user accounts.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=400160">Bug 400160</a>)</li>

  <li>Bugzilla no longer requires Apache::DBI to run under 
    mod_perl. It caused troubles such as lost connections with the DB and
    didn't give any important performance gain.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=408766">Bug 408766</a>)</li>
</ul>

<h3>3.0.2</h3>

<ul>
  <li>Bugzilla should now work on Perl 5.9.5 (and thus the
    upcoming Perl 5.10.0).
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=390442">Bug 390442</a>)</li>
</ul>

<p>See also the <a href="#v30_security">Security Advisory</a> section for
  information about an important security issue fixed in this release.</p>

<h3>3.0.1</h3>

<ul>
  <li>For users of Firefox 2, the <code>show_bug.cgi</code> user interface
    should no longer "collapse" after you modify a bug.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=370739">Bug 370739</a>)</li>
  <li>If you can bless a group, and you share a saved search with that
    group, it will no longer automatically appear in all of that group's
    footers unless you specifically request that it automatically appear
    in their footers.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=365890">Bug 365890</a>)</li>
  <li>There is now a parameter to allow users to perform searches without
    any search terms. (In other words, to search for just a Product
    and Status on the Simple Search page.) The parameter is called
    <code>specific_search_allow_empty_words</code>.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=385910">Bug 385910</a>)</li>
  <li>If you attach a file that has a MIME-type of <code>text/x-patch</code>
    or <code>text/x-diff</code>, it will automatically be treated as a 
    patch by Bugzilla.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=365756">Bug 365756</a>)</li>
  <li>Dependency Graphs now work correctly on all mod_perl installations.
    There should now be no remaining signficant problems with running
    Bugzilla under mod_perl.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=370398">Bug 370398</a>)</li>
  <li>If moving a bug between products would remove groups
    from the bug, you are now warned.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=303183">Bug 303183</a>)</li>
  <li>On IIS, whenever Bugzilla threw a warning, it would
    actually appear on the web page. Now warnings are suppressed,
    unless you have a file in the <code>data</code> directory called
    <code>errorlog</code>, in which case warnings will be printed there.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=390148">Bug 390148</a>)</li>
  <li>If you used <kbd>email_in.pl</kbd> to edit a bug that was
    protected by groups, all of the groups would be cleared.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=385453">Bug 385453</a>)</li>
  <li>PostgreSQL users: New Charts were failing to collect data over time.
    They will now start collecting data correctly.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=257351">Bug 257351</a>)</li>
  <li>Some flag mails didn't specify who the requestee was. 
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=379787">Bug 379787</a>)</li>
  <li>Instead of throwing real errors, <kbd>collectstats.pl</kbd> would
    just say that it couldn't find <code>ThrowUserError</code>.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=380709">Bug 380709</a>)</li>
  <li>Logging into Bugzilla from the home page works again
    with IIS5. 
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=364008">Bug 364008</a>)</li>
  <li>If you were using SMTP for sending email, sometimes emails would
    be missing the <code>Date</code> header.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=304999">Bug 304999</a>).</li>
  <li>In the XML-RPC WebService, <code>B<!-- -->ug.legal_values</code> now
    correctly returns values for custom fields if you request values 
    for custom fields.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=381737">Bug 381737</a>)</li>
  <li>The "Bug-Writing Guidelines" page has been shortened
    and re-written.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=378590">Bug 378590</a>)</li>
  <li>If your <code>urlbase</code> parameter included a port number,
    like <code>www.domain.com:8080</code>, SMTP might have failed.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=384501">Bug 384501</a>)</li>
  <li>For SMTP users, there is a new parameter, <code>smtp_debug</code>.
    Turning on this parameter will log the full information about
    every SMTP session to your web server's error log, to help with
    debugging issues with SMTP.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=384497">Bug 384497</a>)</li>
  <li>If you are a "global watcher" (you get all mails from every 
    bug), you can now see that in your Email Preferences.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=365302">Bug 365302</a>)</li>
  <li>The Status and Resolution of bugs are now correctly
    localized in CSV search results.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=389517">Bug 389517</a>)</li>
  <li>The "Subject" line of an email was being mangled if it contained
    non-Latin characters.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=387860">Bug 387860</a>)</li>
  <li>Editing the "languages" parameter using <kbd>editparams.cgi</kbd> would
    sometimes fail, causing Bugzilla to throw an error.
    (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=335354">Bug 335354</a>)</li>
</ul>

<h2 id="v30_req">Minimum Requirements</h2>

<p>Any requirements that are new since 2.22 will look like
  <span class="req_new">this</span>.</p>

<ul>
  <li><a href="#v30_req_perl">Perl</a></li>
  <li><a href="#v30_req_mysql">For MySQL Users</a></li>
  <li><a href="#v30_req_pg">For PostgreSQL Users</a></li>
  <li><a href="#v30_req_modules">Required Perl Modules</a></li>
  <li><a href="#v30_req_optional_mod">Optional Perl
    Modules</a></li>
</ul>


<h3 id="v30_req_perl">Perl</h3>

<ul>
  <li>Perl <span class="req_new">v<strong>5.8.0</strong></span> (non-Windows 
    platforms)</li>
  <li>Perl v<strong>5.8.1</strong> (Windows platforms)</li>
</ul>

<h3 id="v30_req_mysql">For MySQL Users</h3>

<ul>
  <li>MySQL <span class="req_new">v4.1.2</span></li>
  <li><strong>perl module:</strong> DBD::mysql v2.9003</li>
</ul>

<h3 id="v30_req_pg">For PostgreSQL Users</h3>

<ul>
  <li>PostgreSQL v8.00.0000</li>
  <li><strong>perl module:</strong> DBD::Pg v1.45</li>
</ul>

<h3 id="v30_req_modules">Required Perl Modules</h3>

<table class="req_table" border="0" cellspacing="0" cellpadding="0">
  <tr>
    <th>Module</th> <th>Version</th>
  </tr>
    <tr><td>CGI</td> <td>2.93</td>
  </tr>
  <tr>
    <td>Date::Format</td> <td>2.21</td>
  </tr>
  <tr>
    <td>DBI</td> 
    <td class="req_new">1.41</td>
  </tr>
  <tr>
    <td>File::Spec</td> <td>0.84</td>
  </tr>
  <tr>
    <td>Template</td> <td>2.12</td>
  </tr>
  <tr>
    <td class="req_new">Email::Send</td> 
    <td class="req_new">2.00</td>
  </tr>
  <tr>
    <td>Email::MIME</td> 
    <td>1.861</td>
  </tr>
  <tr>
    <td class="req_new">Email::MIME::Modifier</td> 
    <td class="req_new">1.442</td>
  </tr>
</table>

<h3 id="v30_req_optional_mod">Optional Perl Modules</h3>

<p>The following perl modules, if installed, enable various
  features of Bugzilla:</p>

<table class="req_table" border="0" cellspacing="0" cellpadding="0">
  <tr>
    <th>Module</th> <th>Version</th>
    <th>Enables Feature</th>
  </tr>
   <tr>
     <td class="req_new">LWP::UserAgent</td> 
     <td class="req_new">(Any)</td> 
     <td>Automatic Update Notifications</td>
  </tr>
  <tr>
    <td>Template::Plugin::GD::Image</td> 
    <td>(Any)</td> 
    <td>Graphical Reports</td>
  </tr>
  <tr>
    <td>GD::Graph</td> 
    <td>(Any)</td> 
    <td>Graphical Reports</td>
  </tr>
  <tr>
    <td>GD::Text</td> 
    <td>(Any)</td> 
    <td>Graphical Reports</td>
  </tr>
  <tr>
    <td>GD</td> 
    <td>1.20</td> 
    <td>Graphical Reports, New Charts, Old Charts</td>
  </tr>
  <tr>
    <td class="req_new">Email::MIME::Attachment::Stripper</td> 
    <td class="req_new">(Any)</td> 
    <td>Inbound Email</td>
  </tr>
  <tr>
    <td class="req_new">Email::Reply</td> 
    <td class="req_new">(Any)</td> 
    <td>Inbound Email</td>
  </tr>
  <tr>
    <td>Net::LDAP</td> 
    <td>(Any)</td> 
    <td>LDAP Authentication</td>
  </tr>
  <tr>
    <td>HTML::Parser</td> 
    <td>3.40</td> 
    <td>More HTML in Product/Group Descriptions</td>
  </tr>
  <tr>
    <td>HTML::Scrubber</td> 
    <td>(Any)</td> 
    <td>More HTML in Product/Group Descriptions</td>
  </tr>
  <tr>
    <td>XML::Twig</td> 
    <td>(Any)</td> 
    <td>Move Bugs Between Installations</td>
  </tr>
  <tr>
    <td>MIME::Parser</td> 
    <td>5.406</td> 
    <td>Move Bugs Between Installations</td>
  </tr>
  <tr>
    <td>Chart::Base</td> 
    <td>1.0</td> 
    <td>New Charts, Old Charts</td>
  </tr>
  <tr>
    <td>Image::Magick</td> 
    <td>(Any)</td> 
    <td>Optionally Convert BMP Attachments to PNGs</td>
  </tr>
  <tr>
    <td>PatchReader</td> 
    <td>0.9.4</td> 
    <td>Patch Viewer</td>
  </tr>
  <tr>
    <td class="req_new">SOAP::Lite</td> 
    <td class="req_new">(Any)</td> 
    <td>XML-RPC Interface</td>
  </tr>
  <tr>
    <td class="req_new">mod_perl2</td> 
    <td class="req_new">1.999022</td> 
    <td>mod_perl</td>
  </tr>
  <tr>
    <td> CGI</td> 
    <td>3.11</td> 
    <td>mod_perl</td>
  </tr>
</table>

<h2 id="v30_feat">New Features and Improvements</h2>

<ul>
  <li><a href="#v30_feat_cf">Custom Fields</a></li>
  <li><a href="#v30_feat_mp">mod_perl Support</a></li>
  <li><a href="#v30_feat_sq">Shared Saved Searches</a></li>
  <li>
    <a href="#v30_feat_afn">Attachments and Flags on New Bugs</a>
  </li>
  <li><a href="#v30_feat_cr">Custom Resolutions</a></li>
  <li><a href="#v30_feat_ppp">Per-Product Permissions</a></li>
  <li><a href="#v30_feat_ui">User Interface Improvements</a></li>
  <li><a href="#v30_feat_xml">XML-RPC Interface</a></li>
  <li><a href="#v30_feat_skin">Skins</a></li>
  <li><a href="#v30_feat_sbu">Unchangeable Fields Appear 
    Unchangeable</a></li>
  <li><a href="#v30_feat_et">All Emails in Templates</a></li>
  <li><a href="#v30_feat_df">No More Double-Filed Bugs</a></li>
  <li><a href="#v30_feat_cc">Default CC List for Components</a></li>
  <li><a href="#v30_feat_emi">File/Modify Bugs By Email</a></li>
  <li><a href="#v30_feat_gw">Users Who Get All Bug 
    Notifications</a></li>
  <li><a href="#v30_feat_utf8">Improved UTF-8 Support</a></li>
  <li><a href="#v30_feat_upda">Automatic Update Notification</a></li>
  <li><a href="#v30_feat_welc">Welcome Page for New Installs</a></li>
  <li><a href="#v30_feat_other">Other Enhancements and Changes</a></li>
</ul>

<h3 id="v30_feat_cf">Custom Fields</h3>

<p>Bugzilla now includes very basic support for custom fields.</p>

<p>Users in the <kbd>admin</kbd> group can add plain-text or drop-down
  custom fields. You can edit the values available for drop-down fields
  using the &quot;Field Values&quot; control panel.</p>

<p>Don't add too many custom fields! It can make Bugzilla
  very difficult to use. Try your best to get along with the default
  fields, and then if you find that you can't live without custom fields
  after a few weeks of using Bugzilla, only then should you
  start your custom fields.</p>

<h3 id="v30_feat_mp">mod_perl Support</h3>

<p>Bugzilla 3.0 supports mod_perl, which allows for extremely
  enhanced page-load performance. mod_perl trades memory usage for performance,
  allowing near-instantaneous page loads, but using much more memory.</p>

<p>If you want to enable mod_perl for your Bugzilla, we recommend
  a minimum of 1.5GB of RAM, and for a site with heavy traffic, 4GB to 8GB.</p>

<p>If performance isn't that critical on your installation, you don't
  have the memory, or you are running some other web server than
  Apache, Bugzilla still runs perfectly as a normal CGI
  application, as well.</p>

<h3 id="v30_feat_sq">Shared Saved Searches</h3>

<p>Users can now choose to &quot;share&quot; their saved searches
  with a certain group. That group will then be able to 
  &quot;subscribe&quot; to those searches, and have them appear
  in their footer.</p>

<p>If the sharer can &quot;bless&quot; the group he's sharing to,
  (that is, if he can add users to that group), it's considered
  that he's a manager of that group, and his queries show up
  automatically in that group's footer (although they can
  unsubscribe from any particular search, if they want.)</p>

<p>In order to allow a user to share their queries, they also
  have to be a member of the group specified in the 
  <code>querysharegroup</code> parameter.</p>

<p>Users can control their shared and subscribed queries from
  the &quot;Preferences&quot; screen.</p>

<h3 id="v30_feat_afn">Attachments and Flags on New Bugs</h3>

<p>You can now add an attachment while you are filing a new 
  bug.</p>

<p>You can also set flags on the bug and on attachments, while
  filing a new bug.</p>

<h3 id="v30_feat_cr">Custom Resolutions</h3>

<p>You can now customize the list of resolutions available
  in Bugzilla, including renaming the default resolutions.</p>

<p>The resolutions <code>FIXED</code>, <code>DUPLICATE</code>
  and <code>MOVED</code> have a special meaning to Bugzilla,
  though, and cannot be renamed or deleted.</p>

<h3 id="v30_feat_ppp">Per-Product Permissions</h3>

<p>You can now grant users <kbd>editbugs</kbd> and <kbd>canconfirm</kbd>
  for only certain products. You can also grant users <kbd>editcomponents</kbd>
  on a product, which means they will be able to edit that product
  including adding/removing components and other product-specific
  controls.</p>

<h3 id="v30_feat_ui">User Interface Improvements</h3>

<p>There has been some work on the user interface for Bugzilla 3.0,
  including:</p>

<ul>
  <li>There is now navigation and a search box a the <em>top</em> of
    each page, in addition to the bar at the bottom of the page.</li>
  <li>A re-designed &quot;Format for Printing&quot; page for 
    bugs.</li>
  <li>The layout of <kbd>show_bug.cgi</kbd> (the bug editing 
    page) has been changed, and the attachment table has been redesigned.</li>
</ul>

<h3 id="v30_feat_xml">XML-RPC Interface</h3>

<p>Bugzilla now has a Web Services interface using the XML-RPC
  protocol. It can be accessed by external applications by going
  to the <kbd>xmlrpc.cgi</kbd> on your installation.</p>

<p>Documentation can be found in the 
  <a href="https://www.bugzilla.org/docs/4.0/en/html/api/">Bugzilla 
  API Docs</a>, in the various <kbd>Bugzilla::WebService</kbd> modules.</p>

<h3 id="v30_feat_skin">Skins</h3>

<p>Bugzilla can have multiple &quot;skins&quot; installed,
  and users can pick between them. To write a skin, you just have to
  write several CSS files. See the <a href="https://www.bugzilla.org/docs/4.0/en/html/cust-skins.html">Custom
  Skins Documentation</a> for more details.</p>

<p>We currently don't have any alternate skins shipping with
  Bugzilla. If you write an alternate skin, please
  let us know!</p>

<h3 id="v30_feat_sbu">Unchangeable Fields Appear Unchangeable</h3>

<p>As long as you are logged in, when viewing a bug, if you 
  cannot change a field, it will not look like you can change it. That 
  is, the value will just appear as plain text.</p>

<h3 id="v30_feat_et">All Emails in Templates</h3>

<p>All outbound emails are now controlled by the templating system.
  What used to be the <code>passwordmail</code>, <code>whinemail</code>,
  <code>newchangedmail</code> and <code>voteremovedmail</code>
  parameters are now all templates in the <kbd>template/</kbd> directory.</p>

<p>This means that it's now much easier to customize your outbound
  emails, and it's also possible for localizers to have more
  localized emails as part of their language packs, if they want.</p>

<p>We also added a <code>mailfrom</code> parameter to let you set
  who shows up in the <code>From</code> field on all emails that
  Bugzilla sends.</p>

<h3 id="v30_feat_df">No More Double-Filed Bugs</h3>

<p>Users of Bugzilla will sometimes accidentally submit 
  a bug twice, either by going back in their web browser, 
  or just by refreshing a page. In the past, this could file the same 
  bug twice (or even three times) in a row, irritating 
  developers and confusing users.</p>

<p>Now, if you try to submit a bug twice from the same screen 
  (by going back or by refreshing the page), Bugzilla will warn 
  you about what you're doing, before it actually submits the duplicate
  bug.</p>

<h3 id="v30_feat_cc">Default CC List for Components</h3>

<p>You can specify a list of users who will <em>always</em> be added to
  the CC list of new bugs in a component.</p>

<h3 id="v30_feat_emi">File/Modify Bugs By Email</h3>

<p>You can now file or modify bugs via email. Previous versions
  of Bugzilla included this feature only as an
  unsupported add-on, but it is now an official interface to
  Bugzilla.</p>

<p>For more details see the <a href="https://www.bugzilla.org/docs/4.0/en/html/api/email_in.html">documentation
  for email_in.pl</a>.</p>

<h3 id="v30_feat_gw">Users Who Get All Bug Notifications</h3>

<p>There is now a parameter called <kbd>globalwatchers</kbd>. This
  is a comma-separated list of Bugzilla users who will
  get all bug notifications generated by Bugzilla.</p>

<p>Group controls still apply, though, so users who can't see a bug
  still won't get notifications about that bug.</p>

<h3 id="v30_feat_utf8">Improved UTF-8 Support</h3>

<p>Bugzilla users running MySQL should now have excellent
  UTF-8 support if they turn on the <kbd>utf8</kbd> parameter. (New
  installs have this parameter on by default.) Bugzilla
  now correctly supports searching and sorting in non-English languages,
  including multi-bytes languages such as Chinese.</p>

<h3 id="v30_feat_upda">Automatic Update Notification</h3>

<p>If you belong to the <kbd>admin</kbd> group, you will be notified
  when you log in if there is a new release of Bugzilla
  available to download.</p>

<p>You can control these notifications by changing the 
  <kbd>upgrade_notification</kbd> parameter.</p>

<p>If your Bugzilla installation is on a machine that needs to go
  through a proxy to access the web, you may also have to set the
  <kbd>proxy_url</kbd> parameter.</p>

<h3 id="v30_feat_welc">Welcome Page for New Installs</h3>

<p>When you log in for the first time on a brand-new Bugzilla
  installation, you will be presented with a page that describes
  where you should go from here, and what parameters you should set.</p>

<h3 id="v30_feat_qs">QuickSearch Plugin for IE7 and Firefox 2</h3>

<p>Firefox 2 users and Internet Explorer 7 users will be presented
  with the option to add Bugzilla to their search bar.
  This uses the 
  <a href="https://landfill.bugzilla.org/bugzilla-4.0-branch/page.cgi?id=quicksearch.html">QuickSearch syntax</a>.</p>

<h3 id="v30_feat_other">Other Enhancements and Changes</h3>

<p>These are either minor enhancements, or enhancements that have
  very short descriptions. Some of these are very useful, though!</p>

<h4>Enhancements That Affect Bugzilla Users</h4>

<ul>
  <li>In comments, quoted text (lines that start with <kbd>&gt;</kbd>)
    will be a different color from normal text.</li>
  <li>There is now a user preference that will add you to the CC list
    of any bug you modify. Note that it's <strong>on</strong> 
    by default.</li>
  <li>Bugs can now be filed with an initial state of 
    <kbd>ASSIGNED</kbd>, if you are in the <kbd>editbugs</kbd> group.</li>
  <li>By default, comment fields will zoom large when you are typing in them,
    and become small when you move out of them. You can disable this
    in your user preferences.</li>
  <li>You can hide obsolete attachments on a bug by clicking
    &quot;Hide Obsolete&quot; at the bottom of the attachment table.</li>
  <li>If a bug has flags set, and you move it to a different 
    product that has flags with the same name, the flags will be 
    preserved.</li>
  <li>You now can't request a flag to be set by somebody who can't set it
    (Bugzilla will throw an error if you try).</li>
  <li>Many new headers have been added to outbound Bugzilla
    bug emails: <code>X-Bugzilla-Status</code>,
    <code>X-Bugzilla-Priority</code>, <code>X-Bugzilla-Assigned-To</code>,
    <code>X-Bugzilla-Target-Milestone</code>, and 
    <code>X-Bugzilla-Changed-Fields</code>, <code>X-Bugzilla-Who</code>.
    You can look at an email to get an idea of what they contain.</li>
  <li>In addition to the old <code>X-Bugzilla-Reason</code> email header
    which tells you why you got an email, if you got an email because
    you were watching somebody, there is now an 
    <code>X-Bugzilla-Watch-Reason</code> header that tells you who you
    were watching and what role they had.</li>
  <li>If you hover your mouse over a full URL (like 
    <code>http://bugs.mycompany.com/show_bug.cgi?id=1212</code>) that 
    links to a bug, you will see the title of the 
    bug. Of course, this only works for bugs in your
    Bugzilla installation.</li>
  <li>If your installation has user watching enabled, you will now see
    the users that you can remove from your watch-list as a multi-select
    box, much like the current CC list. (Previously it was just a text
    box.)</li>
  <li>When a user creates their own account in Bugzilla, the 
    account is now not actually created until they verify their email
    address by clicking on a link that is emailed to them.</li>
  <li>You can change a bug's resolution without reopening it.</li>
  <li>When you view the dependency tree on a bug, resolved 
    bugs will be hidden by default. (In previous versions,
    resolved bugs were shown by default.)</li>
  <li>When viewing bug activity, fields that hold bug 
    numbers (such as &quot;Blocks&quot;) will have the bug numbers
    displayed as links to those bugs.</li>
  <li>When viewing the &quot;Keywords&quot; field in a bug list,
    it will be sorted alphabetically, so you can sanely sort a list on
    that field.</li>
  <li>In most places, the Version field is now sorted using a version-sort
    (so 1.10 is greater than 1.2) instead of an alphabetical sort.</li>
  <li>Options for flags will only appear if you can set them. So, for
    example, if you can't grant <kbd>+</kbd> on a flag, that option
    won't appear for you.</li>
  <li>You can limit the product-related output of <kbd>config.cgi</kbd>
    by specifying a <kbd>product=</kbd> URL argument, containing the name
    of a product. You can specify the argument more than once for multiple
    products.</li>
  <li>You can now search the boolean charts on whether or not a comment
    is private.</li>
</ul>

<h4>Enhancements For Administrators</h4>

<ul>
  <li>Administrators can now delete attachments, making them disappear
    entirely from Bugzilla.</li>
  <li><kbd>sanitycheck.cgi</kbd> can now only be accessed by users
    in the <kbd>editcomponents</kbd> group.</li>
  <li>The &quot;Field Values&quot; control panel can now only be accessed
    by users in the <kbd>admin</kbd> group. (Previously it was accessible
    to anybody in the <kbd>editcomponents</kbd> group.)</li>
  <li>There is a new parameter <kbd>announcehtml</kbd>, that will allow
    you to enter some HTML that will be displayed at the top of every
    page, as an announcement.</li>
  <li>The <kbd>loginnetmask</kbd> parameter now defaults to 0 for new
    installations, meaning that as long as somebody has the right
    login cookie, they can log in from any IP address. This makes
    life a lot easier for dial-up users or other users whose IP
    changes a lot. This could be done because the login cookie is now
    very random, and thus secure.</li>
  <li>Classifications now have sortkeys, so they can be sorted in an
    order that isn't alphabetical.</li>
  <li>Authentication now supports LDAP over SSL (LDAPS) or TLS (using
    the STARTLS command) in addition to plain LDAP.</li>
  <li>LDAP users can have their LDAP username be their email address,
    instead of having the LDAP <kbd>mail</kbd> attribute be their
    email address. You may wish to set the <kbd>emailsuffix</kbd>
    parameter if you do this.</li>
  <li>Administrators can now see what has changed in a user account,
    when using the &quot;Users&quot; control panel.</li>
  <li><code>REMIND</code> and <code>LATER</code> are no longer part
    of the default list of resolutions. Upgrading installations will
    not be affected--they will still have these resolutions.</li>
  <li><kbd>editbugs</kbd> is now the default for the <kbd>timetrackinggroup</kbd>
    parameter, meaning that time-tracking will be on by default in a new
    installation.</li>
</ul>

<h2 id="v30_issues">Outstanding Issues</h2>

<ul>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=69621">Bug 69621</a>: If you rename or remove a keyword that is
    in use on bugs, you will need to rebuild the "keyword cache"
    by running <a href="sanitycheck.cgi">sanitycheck.cgi</a> and choosing 
    the option to rebuild the cache when it asks. Otherwise keywords may 
    not show up properly in search results.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=99215">Bug 99215</a>: Flags are not protected by "mid-air 
    collision" detection. Nor are any attachment changes.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=89822">Bug 89822</a>: When changing multiple bugs at 
    the same time, there is no "mid-air collision" protection.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=276230">Bug 276230</a>: The support for restricting access to 
    particular Categories of New Charts is not complete. You should treat 
    the 'chartgroup' Param as the only access mechanism available.<br>
    However, charts migrated from Old Charts will be restricted to 
    the groups that are marked MANDATORY for the corresponding Product.
    There is currently no way to change this restriction, and the 
    groupings will not be updated if the group configuration
    for the Product changes.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=370370">Bug 370370</a>: mod_perl support is currently not
    working on Windows machines.</li>
  <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=361149">Bug 361149</a>: If you are using Perl 5.8.0, you may
    get a lot of warnings in your Apache error_log about "deprecated
    pseudo-hashes." These are harmless--they are a bug in 
    Perl 5.8.0. Perl 5.8.1 and later do not have this problem.</li>
  <li>Bugzilla 3.0rc1 allowed custom field column names in 
    the database to be mixed-case. Bugzilla 3.0 only allows
    lowercase column names. It will fix any column names that you have
    made mixed-case, but if you have custom fields that previously were
    mixed-case in any Saved Search, you will have to re-create that Saved
    Search yourself.</li>
</ul>

<h2 id="v30_security">Security Updates in This Release</h2>

<h3>3.0.6</h3>

<p>Bugzilla contains a minor security fix. For details, see the
  <a href="https://www.bugzilla.org/security/2.20.6/">Security Advisory</a>.</p>

<h3>3.0.5</h3>

<p>Bugzilla contains one security fix for 
  <a href="https://www.bugzilla.org/docs/4.0/en/html/api/importxml.html">importxml.pl</a>.
  For details, see the 
  <a href="https://www.bugzilla.org/security/2.22.4/">Security Advisory</a>.</p>

<h3>3.0.4</h3>

<p>Bugzilla 3.0.4 contains three security fixes.
  For details, see the
  <a href="https://www.bugzilla.org/security/2.20.5/">Security Advisory</a>.</p>

<h3>3.0.3</h3>

<p>No security fixes in this release.</p>

<h3>3.0.2</h3>

<p>Bugzilla 3.0.1 had an important security fix that is
  critical for public installations with "requirelogin" turned on.
  For details, see the
  <a href="https://www.bugzilla.org/security/3.0.1/">Security Advisory</a></p>

<h3>3.0.1</h3>

<p>Bugzilla 3.0 had three security issues that have been
  fixed in this release: one minor information leak, one hole only
  exploitable by an admin or using <code>email_in.pl</code>, and one in an
  uncommonly-used template. For details, see the 
  <a href="https://www.bugzilla.org/security/2.20.4/">Security Advisory</a>.</p>

<h2 id="v30_upgrading">How to Upgrade From An Older Version</h2>

<h3 id="v30_upgrading_notes">Notes For Upgraders</h3>

<ul>
  <li>If you upgrade by CVS, there are several .cvsignore files
    that are now in CVS instead of being locally created by 
    <kbd>checksetup.pl</kbd>. This means that you will have to
    delete those files when CVS tells you there's a conflict, and
    then run <kbd>cvs update</kbd> again.</li>
  <li>In this version of Bugzilla, the Summary field
    is now limited to 255 characters. When you upgrade, any Summary
    longer than that will be truncated, and the old summary will be
    preserved in a comment.</li>
  <li>If you have the <kbd>utf8</kbd> parameter turned on, at some
    point you will have to convert your database. <kbd>checksetup.pl</kbd>
    will tell you when this is, and it will give you certain instructions
    at that time, that you have to follow before you can complete
    the upgrade. Don't do the conversion yourself manually--follow
    the instructions of <kbd>checksetup.pl</kbd>.</li>
  <li>If you ever ran 2.23.3, 2.23.4, or 3.0rc1, you will have to run
    <kbd>./collectstats.pl --regenerate</kbd> at the command line, because
    the data for your Old Charts is corrupted. This can take several days,
    so you may only want to run it if you use Old Charts.</li>
  <li>You should also read the Outstanding Issues sections of
    <a href="#v30_previous">older release notes</a> if you are upgrading
    from a version lower than 2.22.</li>
</ul>

<h3>Steps For Upgrading</h3>

<p>Once you have read the notes above, see the 
  <a href="https://www.bugzilla.org/docs/4.0/en/html/upgrade.html">Upgrading 
  documentation</a> for instructions on how to upgrade.</p>

<h2 id="v30_code_changes">Code Changes Which May Affect Customizations</h2>

<ul>
  <li><a href="#v30_code_loc"><strong>Packagers:</strong> Location
    Variables Have Moved</a></li>
  <li><a href="#v30_code_hooks">Hooks!</a></li>
  <li><a href="#v30_code_api">API Documentation</a></li>
  <li><a href="#v30_code_globals">Elimination of globals.pl</a></li>
  <li><a href="#v30_code_scope">Cleaned Up Variable Scoping Issues</a></li>
  <li><a href="#v30_code_sql">No More SendSQL</a></li>
  <li><a href="#v30_code_auth">Auth Re-write</a></li>
  <li><a href="#v30_code_obj">Bugzilla::Object</a></li>
  <li><a href="#v30_code_req">Bugzilla-&gt;request_cache</a></li>
  <li><a href="#v30_code_other">Other Changes</a></li>
</ul>

<h3 id="v30_code_loc"><strong>Packagers:</strong> Location Variables
    Have Moved</h3>

<p>In previous versions of Bugzilla, <kbd>Bugzilla::Config</kbd>
  held all the paths for different things, such as the path to localconfig
  and the path to the <kbd>data/</kbd> directory.</p>

<p>Now, all of this data is stored in a subroutine,
  <kbd>Bugzilla::Constants::bz_locations</kbd>.</p>

<p>Also, note that for mod_perl, <kbd>bz_locations</kbd> must return
  <em>absolute</em> (not relative) paths. There is already code in that
  subroutine to help you with this.</p>

<h3 id="v30_code_hooks">Hooks!</h3>

<p>Bugzilla now supports a code hook mechanism. See the 
  documentation for 
  <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/Hook.html">Bugzilla::Hook</a>
  for more details.</p>

<p>This gives Bugzilla very advanced plugin support. You can
  hook templates, hook code, add new parameters, and use the XML-RPC
  interface. So we'd like to see some Bugzilla plugins
  written! Let us know on the <a href="https://lists.bugzilla.org/listinfo/developers">developers&#64;bugzilla.org</a>
  mailing list if you write a plugin.</p>

<p>If you need more hooks, please 
  <a href="https://www.bugzilla.org/contributing/reporting_bugs">File a b<!-- -->ug</a>!</p>

<h3 id="v30_code_api">API Documentation</h3>

<p>Bugzilla now ships with all of its perldoc built
  as HTML. Go ahead and read the
  <a href="https://www.bugzilla.org/docs/4.0/en/html/api/">API Documentation</a>
  for all of the Bugzilla modules now! Even scripts like
  <kbd>checksetup.pl</kbd> have HTML documentation.</p>

<h3 id="v30_code_globals">Elimination of globals.pl</h3>

<p>The old file <kbd>globals.pl</kbd> has been eliminated.
  Its code is now in various modules. Each function went to the module
  that was appropriate for it.</p>

<p>Usually we filed a bug in 
  <a href="https://bugzilla.mozilla.org">bugzilla.mozilla.org</a> for
  each function we moved. You can search there for the old name of
  the function, and that should get you the information about what
  it's called now and where it lives.</p>

<h3 id="v30_code_scope">Cleaned Up Variable Scoping Issues</h3>

<p>In normal perl, you can have code like this:</p>
<pre>my $var = 0;
sub y { $var++ }</pre>

<p>However, under mod_perl that doesn't work. So variables are no
  longer &quot;shared&quot; with subroutines--instead all variables
  that a subroutine needs must be declared inside the subroutine itself.</p>

<h3 id="v30_code_sql">No More SendSQL</h3>

<p>The old <kbd>SendSQL</kbd> function and all of its companions are
  <strong>gone</strong>. Instead, we now use DBI for all database
  interaction.</p>

<p>For more information about how to use 
  <a href="http://search.cpan.org/perldoc?DBI">DBI</a> with 
  Bugzilla, see the 
  <a href="https://www.bugzilla.org/contributing/developer#sql-sendreceive">Developer's
  Guide Section About DBI</a></p>

<h3 id="v30_code_auth">Auth Re-write</h3>

<p>The <kbd>Bugzilla::Auth</kbd> family of modules have been completely
  re-written. For details on how the new structure of authentication,
  read the 
  <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/Auth.html">Bugzilla::Auth
  API docs</a>.</p>

<p>It should be very easy to write new authentication plugins, now.</p>

<h3 id="v30_code_obj">Bugzilla::Object</h3>

<p>There is a new base class for most of our objects, 
  <a href="https://www.bugzilla.org/docs/4.0/en/html/api/Bugzilla/Object.html">Bugzilla::Object</a>.
  It makes it really easy to create new objects based on things that are 
  in the database.</p>

<h3 id="v30_code_req">Bugzilla-&gt;request-cache</h3>

<p><kbd>Bugzilla.pm</kbd> used to cache things like the database
  connection in package-global variables (like <kbd>$_dbh</kbd>).
  That doesn't work in mod_perl, so instead now there's a hash
  that can be accessed through <code>Bugzilla-&gt;request_cache</code>
  to store things for the rest of the current page request.</p>

<p>You shouldn't access <code>Bugzilla-&gt;request_cache</code> directly,
  but you should use it inside of <kbd>Bugzilla.pm</kbd> if you modify
  that. The only time you should be accessing it directly is if you need
  to reset one of the caches. Hash keys are always named after the function
  that they cache, so to reset the template object, you'd do:
  <code>delete Bugzilla-&gt;request_cache-&gt;{template};</code>.</p>

<h3 id="v30_code_other">Other Changes</h3>

<ul>
  <li><kbd>checksetup.pl</kbd> has been completely re-written, and most
    of its code moved into modules in the <kbd>Bugzilla::Install</kbd>
    namespace. See the
    <a href="https://www.bugzilla.org/docs/4.0/en/html/api/checksetup.html">checksetup
    documentation</a> and <a href="https://bugzilla.mozilla.org/showdependencytree.cgi?id=277502&amp;hide_resolved=0">Bugzilla
   bug 277502</a> for details.</li>
  <li>Instead of <kbd>UserInGroup()</kbd>, all of Bugzilla now 
    uses <kbd>Bugzilla-&gt;user-&gt;in_group</kbd></li>
  <li>mod_perl doesn't like dependency loops in modules, so we now have
    a test for that detects dependency loops in modules when you run
   <kbd>runtests.pl</kbd>.</li>
  <li><kbd>globals.pl</kbd> used to modify the environment variables,
    like <kbd>PATH</kbd>. That now happens in <kbd>Bugzilla.pm</kbd>.</li>
  <li>Templates can now link to the documentation more easily.
    See the <kbd>global/code-error.html.tmpl</kbd> and
    <kbd>global/user-error.html.tmpl</kbd> templates for examples.
    (Search for &quot;docslinks.&quot;)</li>
  <li>Parameters are accessed through <kbd>Bugzilla-&gt;params</kbd>
    instead of using the <kbd>Param()</kbd> function, now.</li>
  <li>The variables from the <kbd>localconfig</kbd> file are accessed
    through the <code>Bugzilla-&gt;localconfig</code> hash instead of through
    <kbd>Bugzilla::Config</kbd>.</li>
  <li><kbd>Bugzilla::BugMail::MessageToMTA()</kbd> has moved into its
    own module, along with other mail-handling code, called
    <kbd>Bugzilla::Mailer</kbd></li>
  <li>The <kbd>CheckCanChangeField()</kbd> subroutine in 
    <kbd>process_bug.cgi</kbd> has been moved to <kbd>Bugzilla::Bug</kbd>,
    and is now a method of a bug object.</li>
  <li>The code that used to be in the <kbd>global/banner.html.tmpl</kbd>
    template is now in <kbd>global/header.html.tmpl</kbd>. The banner
    still exists, but the file is empty.</li>
</ul>

<h2 id="v30_previous">Release Notes For Previous Versions</h2>

<p>Release notes for versions of Bugzilla for versions
  prior to 3.0 are only available in text format: 
  <a href="https://www.bugzilla.org/docs/4.0/en/rel_notes.txt">Release Notes for Bugzilla 2.22
  and Earlier</a>.</p>