Zope changes

  This file contains change information for the current Zope release. 
  Change information for previous versions of Zope can be found in the
  file HISTORY.txt.

    Zope 2.3.1

      Bugs Fixed

        - Fixed catalog length error bug.

        - Fixed textindex search queries with parenthesis (which haven't
          worked since at least 2.2.4).

        - Added logic to use the value of 'textindex_operator' as
          passed in the request to determine which query operator to
          use (and, near, andnot, or).  Valid values to pass in to
          textindex_operator are 'and', 'or', 'near', and 'andnot'
          (capitalization is ignored).  This is a near-term workaround
          for the inability to specify a default text index query
          operator on a per-index basis.  It provides the ability to
          override the currently module-defined default 'Or' operator
          for textindexes on a per-search basis.

          An example of the utility of textindex_operator used with a
          ZCatalog instance:

          zcatalog.searchResults(atextindex='foo', textindex_operator='and')

        - The import machinery did not correctly find import files located
          in SOFTWARE_HOME/import if SOFTWARE_HOME / INSTANCE_HOME setups 
          were in use.

	- The default view for "broken" objects was broken :)

        - The FTP server now provides for more informative error handling
          through a setMessage() method on the ftp response object (thanks
          to Richard Jones).

        - The title of HTML help files is now parsed out and used by the 
          help engine (thanks to Richard Jones).

        - Objects wrapped with Explicit acquisition wrappers were not 
          correctly handling the __nonzero__ protocol (as well as other
          numeric protocols).

	- A bug in the sendmail tag that could cause "len of unsized object" 
          errors has been fixed.

	- Some bits of DateTime parsing were not raising the same errors
          claimed in the documentation.

        - Handling of HTTP "Destination" headers for WebDAV MOVE and COPY 
          was not tolerant of complete URLs (including scheme, server, etc.)

        - Keyword indexes generated spurious error logs when objects
          without keywords were added.

	- Fixed a memory error in the new BTree buckets that surfaced 
          during testing on ia64.

        - Fixed a multi-arg append() call in the ClassicDocumentClass
          in StructuredText.

    Zope 2.3.1 beta 3

      Bugs Fixed

        - ImageFile objects were not using os.path.join to build 
          the local path to an image file, which caused oddities
          on win32.

        - Some missing casts in Splitter.c prevented the splitter 
          from properly working with some international characters.

        - Fixed documentation of dtml-var tag. Improved discussion of
          entity syntax and fmt and url attributes.

        - Fixed manage_convertBTrees method of ZCatalogs (this method was
          failing due to a missed copying of the length value, preventing
          Catalogs from showing their "old" items once converted).

        - Changed the presentation of last-modified dates in ZMI listings 
          to an ISO format that is a bit shorter and a better common format.

        - Added a patch to load_site.py to handle entity references.

        - Added a patch to load_site.py to use the new dtml syntax when 
          adding header and footer lines.

        - Handling of the __nonzero__ protocol by Acquisition wrappers 
          was fixed.

    Zope 2.3.1 beta 2

      Bugs Fixed

        - Fixed formatting bugs in the DTML reference. Also added a
          note to the dtml-tree tag reference page explaining the
          leaves attribute better.

        - Fixed broken Image and File downloads when using an Apache server
          set up to cache such data. In certain circumstances a
          content-length of 0 would be sent, which made Internet Explorer
          not read any more than that, resulting in broken images and
          downloads.

        - Fixed a doc string display bug in API help topics. Also
          slightly improved the display of help topics which include
          more than one class.

        - Fixed inaccuracies in 'dtml-in' DTML reference help
          topic. (Collector #1972)

        - Merged a bug fix that was missed in the logging call when 
          an object that is not in a Text Index tries to unindex itself.

        - Removed a duplicate list item from the copyright screen.

        - Fixed a bug in the docstring of DemoStorage.py

        - Added ZPL to ZPublisher/BeforeTraverse.py

        - The tabs behaved oddly in the "database management" part of 
          the control panel.

        - The icon for Python script objects has been updated. Thanks
          to Chris Withers for sending it in.

        - Added an entry to doc/FAQ.txt about the "checksum error" that 
          some vendor-supplied tar implementations (Solaris) produce due 
          to long pathnames in an archive produced by GNU tar.

        - Using the 'scale' argument to the 'tag' method of an Image object
          could produce invalid height and width values in the resulting 
          HTML tag (floating point values).

        - The tab corner .gifs for inactive tabs were not transparent in 
          places where they should have been.

        - Corrected mistakes in the logic that retries the request when
          a ConflictError occurs.  The behavior was a little erratic.

        - The problems ('attribute error: commit_sub') that some people 
          were having with certain kinds of objects (like database 
          connections) not playing correctly with subtransactions have 
          been fixed.

        - Applied changes from Hotfix_2001-02-23.  Some ZClass methods
          weren't protected properly and the ObjectManager,
          PropertyManager, and PropertySheets classes were returning
          mutable objects that could be exploited by restricted code.

        - A malformed html option tag made the add list broken for 
          Mozilla.

        - The permission declaration for 'manage_main' on ZSQLMethod
          objects was missing, making editing effectively only available 
          to the Manager role (the Change Database Methods permission had
          no effect).

        - A missing '/' at the end of the contents form action url caused 
          some clients to behave strangely.

        - A long-standing problem with traversal of object names with spaces 
          in them from WebDAV tools has been resolved. Part of the DAV 
          machinery was in some cases double-url-quoting DAV:href values.

        - A long-languishing patch from Dieter Maurer to fix batching info
          in dtml-in has been applied.

        - z2.py failed to correctly pass an address:port specification for 
          the ZSYSLOG_SERVER environment variable to the medusa syslog logger.

        - The value passed for the ZSYSLOG environment variable was not being
          used in the same way by logging machinery in ZServer and the Zope 
          core. The file in doc/LOGGING.txt has been updated to reflect that 
          the value passed for ZSYSLOG should be the path to the UNIX domain
          socket to log to (usually '/dev/log').

        - Using the strftime method of DateTime objects (often via the 
          fmt attribute of a dtml tag) produced incorrect results for 
          DateTime objects outside of the range of the native C strftime
          implementation. A change has been made so that an exception is
          raised in those situations rather than silently return the 
          wrong answer.

        - Corrected the aq_inContextOf() method so it always follows
          containment wrappers.

        - The headers attribute of FileUpload objects did not have any
          security assertions, which meant that it could not be accessed
          from DTML as advertised.

        - A number of Collector patches to fix DateTime issues (mostly 
          regarding timezone handling) were applied.

        - Key errors were returned from catalog searches due to bugs
          in unindexing objects.

        - Objects that should have been included in search results
          were excluded do to bugs in indexing objects.

        - The database grew too fast when objects were routinely
          indexed one at a time by the catalog. This was due to
          inefficiencies in the underlying BTree implementation that
          caused too many objects to be changed when indexing
          incrementally. In addition, the set implementation, used for
          keeping track of documents in field indexes, when the number
          of documents per key was large, caused large database updates
          when a document was added or removed, because the entire set
          was stored in a single database record.

          A new BTree and set implementation has been
          provided to address these problems.

        - The catalog is the most common source of conflict errors due
          to a number of "hot spots" in the implementation and due to
          the large number of objects that are typically updated when
          indexing.  The hot spots have now been removed and the
          number of objects modified when indexing has been
          dramatically reduced. In addition, conflicts detected during
          transaction commit can now usually be resolved using new
          conflict-resolution protocols and conflict-resolution
          support added to the catalog. These changes will not avoid
          all conflicts, but will reduce conflicts significantly in
          many cases.

          Specific information on how to update existing Catalogs to take 
          advantage of the data structures available can be found at:

          http://www.zope.org/Members/mcdonc/HowTos/UpgradeToNewCatalog


    Zope 2.3.1 beta 1

      Bugs Fixed

        - PUT on NullResource is now a public method that checks
          whether the user can create the type of object returned by
          a PUT_Factory.

        - dtml-in sorting using unhashable types (like lists) has been
          fixed.

        - A new environment variable "FORCE_PRODUCT_LOAD" when set on
          ZEO clients (clients which also define the "ZEO_CLIENT" env
          var) causes product loading to be "forced" by that ZEO
          client.  Formerly, if all ZEO clients had the "ZEO_CLIENT"
          environment variable set, it was impossible to force
          a product load without undefining the "ZEO_CLIENT" env var
          on one of the ZEO clients.  Now, if one of the ZEO clients has
          both the ZEO_CLIENT env var and the FORCE_PRODUCT_LOAD env
          var defined, that client will push products into the ZODB.  It
          is advisable to only set FORCE_PRODUCT_LOAD on one ZEO client
          if it's set at all.

        - A typo in CopySupport caused the wrong http error to be 
          raised in manage_renameObjects (500 Server Error instead 
          of Bad Request).

        - A bit of PermissionMapping logic was calling manage_access
          with too many arguments, causing an error when trying to 
          make changes on the Security tab of ZClasses.

        - The Catalog no longers throws an AttributeError if you
          pass it a 'sort_on' parameter that isn't useful. Instead,
          it throws a ValueError with an instructional string.

        - An error in the edit form for Permission objects made it 
          impossible to edit Permission objects in Products through
          the Web.

        - The script source in Python scripts was not being html
          quoted on the Web edit form.

        - Fixed a bug in Mount.py that made it difficult to see the
          reason connections failed.

        - Fixed a bug which made it impossible to cut and paste ZCatalog
          instances.

        - Processes spawned from a Zope process could have a bad effect 
          if one tried to kill the Zope process while a spawned process 
          was still active. Because the spawned process had inherited 
          the listening sockets of the servers across the fork(), it 
          was not possible to restart the Zope instance until the spawned 
          process had died and release the server sockets :(

        - Added a "tempfile.py" module to lib/python.  This tempfile module
          is r1.27 from the Python CVS MAIN branch.  It fixes two race
          condition bugs that could appear under heavy load.  This module
          will be used by Zope instead of the tempfile.py that ships with
          the Python source or with a Zope binary distribution.  It is
          probably unnecessary under Python 2.0+, but won't hurt.

        - Removed lib/python/App/manage.dtml, which wasn't removed when
          dtml files were moved to a separate directory.

        - Fixed two mistakes in the RAM cache cleanup code.

        - Added code to handle a failed BeforeTraverse hook gracefully.

        - Added help system docs for Script (Python) instance management
          screens.

        - Checked in Stephen Purcell's PyUnit 1.3, replacing PyUnit 1.2.

        - Hardened ZMI contents view against subobjects w/ flaky
          'get_size' (Collector #1900).

        - Corrected a bug that could leave a cacheable object associated
          with the wrong cache manager after switching cache managers.

        - Changed the html title tag in the manage frameset to use BASE0
          instead of SERVER_NAME, providing more useful info for virtual
          hosted sites (patch from Chris Withers).

        - The highlighted active tab wasn't correct for some security 
          views.

        - Changed undo error message wording in FileStorage, DemoStorage,
          and POSException.  Confusing error reports that claim a
          transaction could not be undone because the transaction was
          "undoable" now claim that the transaction was "non-undoable".

        - Some conflict errors failed to properly quote object ids, 
          making the ids unreadable and introducting binary text into
          output.

        - Changed Product init/list code to accept all of "VERSION.TXT",
          "VERSION.txt", and "version.txt" as the version.txt file for
          the Product.  Additionally accept any of "README.txt",
          "README.TXT", or "readme.txt" as the readme filename.

        - When the root index_html was missing, an inappropriate error
          was displayed to a visitor when viewing an object that didn't
          have its own index_html.  (Collector 1954, thanks to Chris
          Withers for the bugreport).        

        - A bug prevented unchecking the "cache anonymous connections
          only" checkbox for Accelerated HTTP Cache Managers.

        - Some code that tried to workaround a DAV client bug dealing 
          with ports in Host headers caused problems for virtual hosting
          setups. That code has been disabled until we decide that we 
          care enough about the buggy client to work around it in a 
          better way.

        - The isCurrent(Month|Day|Hour|Minute) methods of DateTime objects
          returned incorrect answers. Thanks to Casey Duncan for the patch.

        - The "help" links did not work if javascript was disabled in the 
          client.

        - ZCatalog getobject now uses unrestrictedTraverse during
          getobject instead of restrictedTraverse.  This emulates Zope
          2.2 behavior.

        - A bug in the HelpTopic implementation for STX help topics caused 
          them to be inaccessible unless Anonymous Users had the View 
          permission.

        - Structured Text did not correctly recognize CRLFs generated by 
          windows editors as paragraph dividers.

        - A bit of code that ran after an import where ZClass objects 
          were added was removed. It was designed to fixup the ZClass
          registry after import to resolve ZClass dependencies that 
          could get broken if a system were moved in separate imports. 
          It turned out to be expensive under ZEO, and the benefit is 
          not that compelling (if a failed dependency does get 
          introduced, it will be spotted at the next startup).

        - The month name recorded in Z2.log was affected by the current 
          locale setting, which caused problems for various logfile 
          analysis tools.

        - Product object in the control panel had a useless View tab 
          by an accident of inheritance.

        - Manual restarts and shutdowns weren't logged.
   
        - Unix: If processes were restarted too frequently, the daemon
          process incorrectly inferer a startup problem and shut
          itself down.

        - Unix: On restart, the watcher daemon restarted as well, causing
          the watchers process id to change.

        - The method for enabling modules for use with Python scripts was 
          not documented and a bit harder than it needed to be. A helper
          function has been added in a Utility.py in the PythonScripts
          product to make this easier and the process is documented in 
          the README.txt in the PythonScripts package.

        - Fixed OFS.CopySupport's _verifyObjectPaste to utilize the
          permission stored in the metatype registry, if available
          (Collector #1975).

        - In certain situations using restrictedTraverse failed with the
          wrong error if called on the application object with the name
          of a nonexistent object.

        - Subtransactions couldn't be used if some data managers
          didn't support subtransactions. This was especially painful
          when using RDBMS user authentication in combination with
          large image or file uploads or catalog rebuilding, which use
          subtransactions.

          Now allow subtransaction commit (but not abort) even when some
          participating data managers don't understand subtransactions.

      New Features

        - The API for cataloging objects changed slightly:

          o If the object being cataloged has a 'getPhysicalPath'
            method, as Zope objects typically (always) do, then it is
            no longer necessary to pass a unique ID to the catalog
            when catalling the 'catalog_object' method. It is
            recommended to not pass a unique id and let the catalog
            figure out the unique id on it's own.

          o If a unique id is passed to the catalog 'catalog_object'
            method, it **must** be a string. 

    Zope 2.3.0

      Bugs Fixed

        - The authentication machinery now correctly returns a 400
          (Bad Request) if an invalid authentication token (bad 
          base64 encoding) is sent by a client.

        - ZClasses with very minimal base classes could end up without 
          a '_setId' method, which createInObjectManager expects.

        - Fixed a bug that caused the ExtensionClass __call_method__
          hook to fail when used with unbound C methods.

        - Fixed a bug in the management interface which caused
          the "Paste" button to not show up after a copy or cut
          operation on the first showing of manage_main.

        - Final lexicon optimizations that provide additional
          performance over previous releases.  In addition, the number
          of objects that have to be updated is frequently reduced.

        - Merge code for Catalog Text indexes has been integrated.
          This will now merge the changes in, rather than replacing
          them.  This should reduce the number of objects that has
          to be updated.  In addition, when nothing has changed, the
          object's indexes won't be touched, saving enormous amounts
          of space for some applications.

        - Flow of the Catalog management screens cleaned up so that
          pages are refreshed correctly.  Buttons on the Advanced
          tab refresh to the Advanced tab now.

        - Further management interface cleanup of the Lexicon to
          bring in line with the normal ZMI.

    Zope 2.3.0 beta 3

      Bugs Fixed

        - The import / export button did not show up if a folder was
          empty.

        - A problem in acquisition wrapping of users obtained though
          the SecurityManager caused certain ownership operations to
          fail (this manifested itself as a report about broken DAV
          MOVE operations).

        - The Zope management screens no longer try to set a default
          charset with the content-type.

        - Certain security related operations were failing due to 
          argument mismatch errors (too many arguments).

        - Passing unicode data to html_quote could cause problems 
          since html_quote was trying to screen out two characters
          that many browsers are willing to accept as html special
          characters (to prevent "cross-site scripting" attacks). 
          This has been moved out of html_quote and into the RESPONSE
          object, where the chars will be quoted only if no charset 
          is defined for the content-type or the charset is an alias
          for Latin-1.

        - Rename via FTP was not supported.

        - Changed index_html, standard_html_header, standard_html_footer,
          and standard_error_message in Data.fs.in to use "new" DTML syntax
          (as opposed to SSI-style syntax).

        - meta_type of all DTML Methods in Data.fs.in object manager
          "_objects" lists is now "DTML Method".  It had been "Document",
          which caused inaccurate superValues results if 'spec'
          was used.

        - Make ZClasses navigable to FTP/WebDAV; implement 'PUT_factory'
          hook to create PythonScripts (for MIMEtype 'text/x-python')
          and DTMLMethods (for other 'text' MIMEtypes) (Collector #998).

        - Calling manage_addProperty with a list value and a type of 'lines' 
          caused a string representation of the list to be stored.

        - Submitting the proxy roles form without selecting any roles to
          be used as proxy roles caused objects with proxy role support to 
          silently become unexecutable (have effectively empty proxy roles)
          rather than raising an error. The proxy role api now requires that
          at least one role be passed in or an error will be raised.

        - Mechanisms in the underbelly of the Catalog and Globbing
          Lexicon (which is the default for all new Catalogs) has been
          overhauled given substantial performance increases.  On
          simple queries, performance should double (or more) in many
          situations, whereas with globbed queries it may increase by
          substantially more.

        - A method in SQLMethod objects had been removed but the reference
          to it in __ac_permissions__ had not, which caused failure on 
          attempting to set permissions on SQLMethods.

        - A bit of exception handing in the dtml-in tag implementation was 
          too general and could hide subsequent rendering exceptions (thanks 
          to Richard Jones for the patch).

        - Cacheability was not fully enabled for DTML Documents.

    Zope 2.3.0 beta 2

      Bugs Fixed

        - Changed management style sheet to explicitly set the http 
          content-type to avoid a rendering problem on resize in 
          NS browsers.

        - Data.fs.in index_html now shows zope_quick_start instead
          of old, inaccurate content.

        - Changed index_html, standard_html_header, standard_html_footer,
          and standard_error_message in Data.fs.in to use "new" DTML syntax
          (as opposed to SSI-style syntax).

        - The way that the default management tree view imposed sorting 
          in its tree tag dtml made it hard for custom objects to provide
          a sorting that would be more appropriate for the custom object. 
          The management tree view now preserves whatever ordering is 
          returned from tpValues. The default tpValues implementation in
          the ObjectManager class sorts by id by default.

        - Disallowed object IDs that start with "aq_".

        - Changed the default support for "domain authentication mode" 
          in UserFolder to be disabled by default. Domain auth mode 
          was implemented for a very specific case long ago and causes 
          a lot of overhead for anonymous accesses that are needless 
          for the 99% case. People who actually want domain auth mode 
          turned on may call a new 'setDomainAuthenticationMode' method
          to enable it if they wish.

        - Changed the implementation of emergency_user to be backward 
          compatible with the expectations of third-party user folders. 
          Third party user folders should now work with Zope 2.3 without
          modification.

        - A bug in the search interface generation for ZCatalogs was 
          fixed.

        - An integrity check for the global product registry has been 
          added at startup to mitigate registry consistency problems 
          caused by things like missing base classes that cannot be 
          detected by Zope (like removing a Product that another 
          Product depends upon).  If a problem is detected, the global
          registry is automatically rebuilt and the action is logged.

        - A bug in the rendering of 'record' type form variables when
          rendering a request object was fixed.

        - A bug that cause setting of proxy roles for Python Scripts 
          to fail was fixed.

    Zope 2.3.0 beta 1

      Features Added

        - Added a hook that allows user folders to provide a logout
          action.

        - Added a browser preferences screen to allow people to 
          tweak the management UI to their liking. For the folks who 
          complained that they didn't like the new top frame, they 
          can (among other things) turn it off from the browser 
          preferences screen.

        - Added Michel's new QuickStart material. I haven't quite 
          decided whether the old QuickStart should go away or 
          stay around as a source of examples.

        - The logout function has been implemented in a fairly minimal 
          way. We may try to make this nicer by final if we get time.

        - The ZCatalog interface is now cleaned up and matches the new 
          interface look and feel better. In addition some logical
          reorganization was made to move things onto an Advanced tab.

        - Result sets from the Catalog are now much Lazier, and will
          do concatenation with eachother in a lazy fashion.  This was
          suggested by Casey Duncan in Collector #1712.

      Bugs Fixed

        - Added a deprecated alias to UnrestrictedUser, Super, for use
          by user folder products that depend on the old class name.

        - Fixed path for management interface files used for
          CatalogPathAwareness and Aqueduct.

        - Fixed a NameError in HTTPRequest.

        - Made manage_page_style.css correctly available to all.

        - ZCatalog objects now show up in the Add List in the same
          naming convention that was used for all other Z* objects.
          This does *not* affect the meta_type that is actually used
          for the object itself.

        - (Collector #1835, 1820, 1826) Eliminated errors in both
          Field and Keyword indexes where old keys might show up in
          'uniqueValuesFor()' because of the way the data structures
          were kept around.

        - (Collector #1823)Eliminated situation where if the Catalog
          did not have a metadata record for 'meta_type' the Cataloged
          Objects view would be incorrect and list everything as a
          'ZCatalog'. Now it simply lists it as 'Unknown'.

        - (Collector #1844) On the brains returned from ZCatalog
          queries, 'getObject()' now tries to resolve URLs as well as
          paths.  This should catch more cases.

        - Tags generated for ImageFile objects attempted to use 
          title_or_id(), which is not defined for those objects.

        - Mounting now fails gracefully in when getId() is not
          available in the mounted object.

    Zope 2.3.0 alpha 2

      Features Added

        - The install machinery for source release has been modified 
          to allow Zope to build out of the box for Python 2.0. Note 
          however, that Python 2.0 is still not officially supported. 
          You may see quite a few warnings from the extension builder 
          when compiling for Python 2.

        - A new module, AccessControl.Permissions has been added to 
          make it easier to use the new security assertion spelling. 
          The new module provides consistent symbolic constants for 
          the standard Zope permissions.

        - Cache manager support added.  This allows site administrators
          to ease the burden on their site in a very configurable
          way.  It also provides an API for developers to follow when
          experimenting with caching strategies.

        - The ZPublisher 'method' form variable type has been 
          deprecated in favor of 'action'. The behavior is the 
          same, only the official (and documented in the Zope
          book) name has changed. The 'method' name is still 
          supported for backward compatibility.

        - The 'objectIds' and 'objectValues' methods of ObjectManager
          derived objects are no longer directly Web-accessible. This 
          is a topic that has come up over and over on the lists. Some 
          (xml-rpc, mostly) users may depend on this behavior - applications
          that need access to this information remotely should be modified 
          so that a Python Script or DTML Method can explicitly pass 
          the data. 
          
        - The Image.tag() and ZopeAttributionButton methods now return an
          image tag that is XHTML compatible; a space and a slash have been
          added.

        - SQLMethods can now be edited via FTP and WebDAV tools. Thanks to 
          Anthony Baxter for his FTP support patches.

        - The Catalog has been slightly overhauled to manage object
          paths instead of URLs in its tables.  This should not cause
          any backward compatability concern, but everyone upgrading
          should read the web pages on the zope.org site at:
          http://dev.zope.org/Wikis/DevSite/Projects/ZCatalogVirtualHostFix/UpgradeFAQ
          this will provide information about how to upgrade and new
          features on the result sets, like getObject and
          getPath. These are very important.
     
        - SiteAccess 2.0 has been added, to enable virtual hosting.

        - The StandardCacheManagers product has been added as a primary
          product, making it easier to get started with caching.

        - The class DTMLFile has been added alongside of HTMLFile.
          It supports name bindings, ignores positional parameters,
          and puts the container on top of the namespace by default.
          Most HTMLFiles should work the same (or more securely) if
          converted to a DTMLFile.  Most management interface methods
          should be converted by the final release of 2.3.

        - Added a variable called PUBLISHED to REQUEST.  From now on,
          this variable should be used instead of PARENTS for user
          validation.

        - The inituser file is now read even when one user has been
          created.  This provides a way to reset the password after
          a new user installs Zope but ignores the generated password.

        - ZCatalogs have a reduced number of management interface tabs.

        - ZCatalog keyword and field indexes have been modified to use
          a merge strategy when existing indexes are updated.  When an
          existing object is indexed, the contents of field and
          keyword indexes are merged with the changes detected between
          the existing contents of the index and the new content.

        - CatalogPathAware class added.  This will eventually replace
          CatalogAware.

        - The ManagementInterfaceQuickFix project was merged in. The 
          Zope management interface has been tweaked in various ways 
          to improve productivity and consistency and is now at least 
          slightly less ugly :)

      Bugs Fixed

        - A misspelled function name which prevented the addition of
          properties was corrected.

        - Caused PropertySheets to restrict IDs the same way
          ObjectManager does.

        - (Collector #1586) Fixed situation where the Catalog would
          attempt to loop over a bucket as if it were a list, which
          won't work.  This was reported by Steve Alexander with a
          patch. 

        - Corrected local role computation (Hotfix 2000-12-15)

        - The basic user folder implementation in User.py was changed
          to use the Zope security policy machinery.  see
          http://dev.zope.org/Wikis/DevSite/Proposals/
          ChangeUserFoldersToUseSecurityPolicyAPI for details.

        - Trying to cut or copy with no items selected now returns a 
          nicer error message.

        - A roles keyword argument was added to ZopeSecurityPolicy.validate
          to enable callers to pass in roles as opposed to allowing the
          machinery to figure it out for itself.

        - Some product context initialization related to setting roles
          was updated.

    Zope 2.3.0 alpha 1
    
      Features Added

        - Python Scripts are now part of the Zope core. Big whopping 
          kudos to Evan Simpson for all of the work he has put into 
          this! Having Python Scripts in the core will allow people 
          to much more easily separate logic and presentation (and 
          get that logic out of DTML!) More information and prototype 
          documentation for Python Scripts can be found in the 
          dev.zope.org project:

          http://dev.zope.org/Wikis/DevSite/Projects/PythonMethods

        - Added the __replaceable__ property support to ObjectManager.
            This is currently documented only in the Wiki.

        - Added unit tests for the DateTime module.

        - Added new BASEPATHn and URLPATHn variables in the REQUEST
          object, and changed Zope core DTML files to use BASEPATH1
          instead of SCRIPT_NAME.

        - Added new getId() method to SimpleItem.Item. This should 
          now be used instead of referencing 'object.id' directly, 
          as it is guaranteed to always be a method and to always 
          return the right thing regardless of how the id of the 
          object is stored internally.

        - Improved Ownership controls. Now you simply choose whether
          or not to take ownership of sub-objects when taking
          ownership. There is no need to control implicit/explicit
          ownership.

        - Changed the Zope installation procedure so it is only
          necessary to create one user account and that user is
          stored in the ZODB. The user created at startup now is 
          simply a normal intial "Manager", not the "superuser". 
          It is no longer necessary to login, create an initial 
          manager, logout and log back in! Woohoo!

        - Implemented the "emergency user" concept, which is the new
          name for what was called the superuser. The emergency user 
          doesnt even exist now until you explicitly create it.
        
        - Added new "WebDAV source view" HTTP handler, enabled by new
          '-W' (note uppercase) switch to z2.py.  This handler is *not*
          enabled by default.

        - Implemented "hookable PUT creation" (allows containers to
          override webdav.NullResource's guess at the type of object
          to create when PUT is done to an unknown ID).

        - Added testrunner.py to the utilities directory. The testrunner 
          is a basic utility for running PyUnit based unit tests. It can 
          be used to run all tests found in the Zope tree, all test suites
          in a given directory or in specific files. The testrunner will 
          be used to ensure that all checked in tests pass before releases 
          are made. For more information, see the docstring of the actual
          testrunner.py module.

        - The Interface scarecrow package has been checked in - more work
          will likely be done on it before it goes into wide use. See 
          Michel's "Zope Interfaces" project on dev.zope.org for details:

          http://www.zope.org/Wikis/Interfaces/FrontPage

        - PyUnit has been checked into the core. Along with the testrunner,
          this provides enough infrastructure for us to incrementally begin 
          accumulating (and running!) test suites for various parts of the 
          Zope core.

        - The new security assertion support has been checked in. For 
          more information and an updated version of the "Zope security 
          for developers" guide see the project on dev.zope.org:

          http://dev.zope.org/Wikis/DevSite/Projects/DeclarativeSecurity


      Bugs Fixed

        - Removed some cruft in OFS/content_types.py (an old data
          structure was being constructed but was going unused in
          favor of a newer structure used in conjunction with the
          mimetypes module).

        - (Collector #1650)Where the underlying object does not define
          its own '__cmp__()', comparisons of acquisition-wrapped
          objects fall back to comparing the identities *of the
          wrappers* .  Fixed to unwrap the object (both, if needed)
          before comparing identities.

        - (Collector #1687 Products which register base classes
          for ZClasses typically defer creating them until product
          registration;  the derived ZClass needs them to be available
          immediately after import.  Deprecated
          'ProductContext.registerZClass' and
          'ProductContext.registerBaseClass' in favor of a new function,
          'ZClasses.createZClassForBase' (because none of the machinery
          needed a ProductContext instance anyway).

        - (Collector #1355) Fixed overlapping HTTP POST requests in
          ZServer which could have been corrupted. Thanks to Jeff
          Ragsdale. 

        - Undid a bug fix that caused the DateTime unit tests to fail.

        - Removed the requirement that an "access" file exist.
          "access" is now only needed to create an emergency user
          account.

        - Disabled the monitor port by default because, initially,
          there is no emergency user, and thus no password that
          can be used to protect the port.

        - Secured the hole that was patched by Hotfix_2000-12-08.

        - Disallowed object IDs that end with two underscores.

        - Caused PropertyManager to restrict id's the same way
          ObjectManager does.

